CCNA 1v7
Refer to the exhibit. A company uses the address block of 128.107.0.0/16 for its network. What subnet mask would provide the maximum number of equal size subnets while providing enough host addresses for each subnet in the exhibit? 255.255.255.192 255.255.255.0 255.255.255.128 255.255.255.240 255.255.255.224
255.255.255.128
Refer to the exhibit. Which protocol was responsible for building the table that is shown? DHCP ARP DNS ICMP
ARP
What service is provided by SMTP? Allows clients to send email to a mail server and the servers to send email to other servers. Allows remote access to network devices and servers. Uses encryption to provide secure remote access to network devices and servers. An application that allows real-time chatting among remote users.
Allows clients to send email to a mail server and the servers to send email to other servers.
Which type of server relies on record types such as A, NS, AAAA, and MX in order to provide services? DNS email file web
DNS
A network administrator is adding a new LAN to a branch office. The new LAN must support 90 connected devices. What is the smallest network mask that the network administrator can use for the new network? 255.255.255.128 255.255.255.240 255.255.255.248 255.255.255.224
255.255.255.128
A user is attempting to access http://www.cisco.com/ without success. Which two configuration values must be set on the host to allow this access? (Choose two.) DNS server source port number HTTP server source MAC address default gateway
DNS server default gateway
What attribute of a NIC would place it at the data link layer of the OSI model? attached Ethernet cable IP address MAC address RJ-45 port TCP/IP protocol stack
MAC address
Refer to the exhibit. The IP address of which device interface should be used as the default gateway setting of host H1? R1: S0/0/0 R2: S0/0/1 R1: G0/0 R2: S0/0/0
R1: G0/0
A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a switch to manage it. Which access method should be chosen? Telnet AUX SSH Console
SSH (is chosen)
What is the consequence of configuring a router with the ipv6 unicast-routing global configuration command? Each router interface will generate an IPv6 link-local address. It statically creates a global unicast address on this router. All router interfaces will be automatically activated. The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages.
The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages.
What technique is used with UTP cable to help protect against signal interference from crosstalk? wrapping a foil shield around the wire pairs twisting the wires together into pairs terminating the cable with special grounded connectors encasing the cables within a flexible plastic sheath
twisting the wires together into pairs
Which two traffic types use the Real-Time Transport Protocol (RTP)? (Choose two.) video web file transfer voice peer to peer
video voice
What two security solutions are most likely to be used only in a corporate environment? (Choose two.) antispyware virtual private networks intrusion prevention systems strong passwords antivirus software
virtual private networks intrusion prevention systems
A user is executing a tracert to a remote device. At what point would a router, which is in the path to the destination device, stop forwarding the packet? when the router receives an ICMP Time Exceeded message when the RTT value reaches zero when the host responds with an ICMP Echo Reply message when the value in the TTL field reaches zero when the values of both the Echo Request and Echo Reply messages reach zero
when the value in the TTL field reaches zero
A company has a file server that shares a folder named Public. The network security policy specifies that the Public folder is assigned Read-Only rights to anyone who can log into the server while the Edit rights are assigned only to the network admin group. Which component is addressed in the AAA network service framework? automation accounting authentication authorization
authorization
What command can be used on a Windows PC to see the IP configuration of that computer? show ip interface brief ping show interfaces ipconfig
ipconfig
Match each description with an appropriate IP address. a link-local address public address experimental address loopback address 240.2.6.255 198.133.219.2 169.254.1.5 127.0.0.1 172.18.45.9
link-local address -- 169.254.1.5 public address -- 198.133.219.2 experimental address -- 240.2.6.255 loopback address -- 127.0.0.1 none -- 172
What does the term "attenuation" mean in data communication? strengthening of a signal by a networking device leakage of signals from one cable pair to another time for a signal to reach its destination loss of signal strength as distance increases
loss of signal strength as distance increases
Match the type of threat with the cause. (Not all options are used.) hardware threats electrical threats environmental threats maintenance threats poor handling of key electrical components... unauthorized access resulting in... temperature extremes... physical damage... voltage spikes...
maintenance threats - poor handling of key electrical components... no - unauthorized access resulting in... environmental threats - temperature extremes... hardware threats - physical damage... electrical threats - voltage spikes...
What characteristic describes a Trojan horse? malicious software or code running on an end device an attack that slows or crashes a device or network service the use of stolen credentials to access private data a network device that filters access and traffic coming into a network
malicious software or code running on an end device
What characteristic describes a virus? a network device that filters access and traffic coming into a network the use of stolen credentials to access private data an attack that slows or crashes a device or network service malicious software or code running on an end device
malicious software or code running on an end device
What three requirements are defined by the protocols used in network communcations to allow message transmission across a network? (Choose three.) message size media selection delivery options end-device installation message encoding connector specifications
message size message encoding delivery options
Refer to the exhibit. The switches have a default configuration. Host A needs to communicate with host D, but host A does not have the MAC address for the default gateway. Which network devices will receive the ARP request sent by host A? only host D only hosts A, B, C, and D only hosts B and C only hosts B, C, and router R1 only hosts A, B, and C only router R1
only hosts B, C, and router R1
Which switching method drops frames that fail the FCS check? store-and-forward switching borderless switching ingress port buffering cut-through switching
store-and-forward switching
What are the three parts of an IPv6 global unicast address? (Choose three.) subnet ID subnet mask broadcast address global routing prefix interface ID
subnet ID global routing prefix interface ID
A client packet is received by a server. The packet has a destination port number of 22. What service is the client requesting? SSH SMB/CIFS HTTPS SLP
(22 inverted SS ) SSH
Refer to the exhibit. The network administrator has assigned the LAN of LBMISS an address range of 192.168.10.0. This address range has been subnetted using a /29 prefix. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network (subnet zero is the first subnet). By company policies, the router interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which configuration should be entered into the properties of the workgroup server to allow connectivity to the Internet? IP address: 192.168.10.65 subnet mask: 255.255.255.240, default gateway: 192.168.10.76 IP address: 192.168.10.38 subnet mask: 255.255.255.240, default gateway: 192.168.10.33 IP address: 192.168.10.38 subnet mask: 255.255.255.248, default gateway: 192.168.10.33 IP address: 192.168.10.41 subnet mask: 255.255.255.248, default gateway: 192.168.10.46 IP address: 192.168.10.254 subnet mask: 255.255.255.0, default gateway: 192.168.10.1
(38 x 248) IP address: 192.168.10.38 subnet mask: 255.255.255.248, default gateway: 192.168.10.33
What service is provided by DHCP? An application that allows real-time chatting among remote users. Allows remote access to network devices and servers. Dynamically assigns IP addresses to end and intermediary devices. Uses encryption to provide secure remote access to network devices and servers
(DHCP - dynamic host configuration protocol) Dynamically assigns IP addresses to end and intermediary devices
What is a function of the data link layer? provides the formatting of data provides end-to-end delivery of data between hosts provides delivery of data between two applications provides for the exchange of frames over a common local media
(DL has 'frames') provides for the exchange of frames over a common local media
What characteristic describes an IPS? a tunneling protocol that provides remote users with secure access into the network of an organization a network device that filters access and traffic coming into a network software that identifies fast-spreading threats software on a router that filters traffic based on IP addresses or applications
(IPS - Intrusion prevention system) software that identifies fast-spreading threats
What are two problems that can be caused by a large number of ARP request and reply messages? (Choose two.) Switches become overloaded because they concentrate all the traffic from the attached subnets. The ARP request is sent as a broadcast, and will flood the entire subnet. The network may become overloaded because ARP reply messages have a very large payload due to the 48-bit MAC address and 32-bit IP address that they contain. A large number of ARP request and reply messages may slow down the switching process, leading the switch to make many changes in its MAC table. All ARP request messages must be processed by all nodes on the local network.
(The ARP - All ARP, subnet network) The ARP request is sent as a broadcast, and will flood the entire subnet. All ARP request messages must be processed by all nodes on the local network
Refer to the exhibit. What three facts can be determined from the viewable output of the show ip interface brief command? (Choose three.) Two physical interfaces have been configured. The switch can be remotely managed. One device is attached to a physical interface. Passwords have been configured on the switch. Two devices are attached to the switch. The default SVI has been configured.
(The The One) The switch can be remotely managed. One device is attached to a physical interface The default SVI has been configured.
If Host1 were to transfer a file to the server, what layers of the TCP/IP model would be used? only application and Internet layers only Internet and network access layers only application, Internet, and network access layers application, transport, Internet, and network access layers only application, transport, network, data link, and physical layers application, session, transport, network, data link, and physical layers
(all four TCP/IP layers) application, transport, Internet, and network access layers
What is the purpose of the TCP sliding window? to ensure that segments arrive in order at the destination to end communication when data transmission is complete to inform a source to retransmit data from a specific point forward to request that a source decrease the rate at which it transmits data
(calm down) to request that a source decrease the rate at which it transmits data
A network administrator is adding a new LAN to a branch office. The new LAN must support 4 connected devices. What is the smallest network mask that the network administrator can use for the new network? 255.255.255.248 255.255.255.0 255.255.255.128 255.255.255.192
(chuvak na minimalkah) 255.255.255.248
What is a benefit of using cloud computing in networking? Technology is integrated into every-day appliances allowing them to interconnect with other devices, making them more 'smart' or automated. End users have the freedom to use personal tools to access information and communicate across a business network. Home networking uses existing electrical wiring to connect devices to the network wherever there is an electrical outlet, saving the cost of installing data cables. Network capabilities are extended without requiring investment in new infrastructure, personnel, or software.
(cloud computing = saves money) Network capabilities are extended without requiring investment in new infrastructure, personnel, or software
Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.) integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper enables IPv4 and IPv6 to utilize the same physical medium handles communication between upper layer networking software and Ethernet NIC hardware adds Ethernet control information to network protocol data implements CSMA/CD over legacy shared half-duplex media
(copper media) integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper implements CSMA/CD over legacy shared half-duplex media
hich two statements accurately describe an advantage or a disadvantage when deploying NAT for IPv4 in a network? (Choose two.) NAT adds authentication capability to IPv4. NAT introduces problems for some applications that require end-to-end connectivity. NAT will impact negatively on switch performance. NAT provides a solution to slow down the IPv4 address depletion. NAT improves packet handling. NAT causes routing tables to include more information.
(end-to-end) (depletion) NAT introduces problems for some applications that require end-to-end connectivity. NAT provides a solution to slow down the IPv4 address depletion.
Refer to the exhibit. The switches are in their default configuration. Host A needs to communicate with host D, but host A does not have the MAC address for its default gateway. Which network hosts will receive the ARP request sent by host A? only host D only router R1 only hosts A, B, and C only hosts A, B, C, and D only hosts B and C only hosts B, C, and router R1
(longest thing) only hosts B, C, and router R1
Match a statement to the related network model. (Not all options are used.) a background service is required requires a specific user interface no dedicated server is required devices can only function in one role at a time client and server roles are set on a per request basis Peer-to-peer network Peer-to-peer application
(multifuncional) Peer-to-peer network no dedicated server is required client and server roles are set on a per request basis Peer-to-peer application (always wants sth) requires a specific user interface a background service is required
disgruntled employee is using some free wireless networking tools to determine information about the enterprise wireless networks. This person is planning on using this information to hack the wireless network. What type of attack is this? DoS access reconnaissance Trojan horse
(one word in test) reconnaissance
Refer to the exhibit. Match the network with the correct IP address and prefix that will satisfy the usable host addressing requirements for each network. Network A Network B Network C Network D 192.168.0.0 /24 192.168.0.192 /27 192.168.0.228 /32 192.168.0.0 /25 192.168.0.224 /30 192.168.0.128 /26
(orient on prefix length) 192.168.0.0 /24 - NO 192.168.0.192 /27 - Network C 192.168.0.228 /32 - NO 192.168.0.0 /25 - Network A 192.168.0.224 /30 - Network D 192.168.0.128 /26 - Network B
A network administrator is adding a new LAN to a branch office. The new LAN must support 200 connected devices. What is the smallest network mask that the network administrator can use for the new network? 255.255.255.240 255.255.255.0 255.255.255.248 255.255.255.224
(stay conscious) 255.255.255.0
A technician with a PC is using multiple applications while connected to the Internet. How is the PC able to keep track of the data flow between multiple application sessions and have each application receive the correct packet flows? The data flow is being tracked based on the destination MAC address of the technician PC. The data flow is being tracked based on the source port number that is used by each application. The data flow is being tracked based on the source IP address that is used by the PC of the technician. The data flow is being tracked based on the destination IP address that is used by the PC of the technician.
(they told about application, we chose application) The data flow is being tracked based on the source port number that is used by each application.
Refer to the exhibit. Which two network addresses can be assigned to the network containing 10 hosts? Your answers should waste the fewest addresses, not reuse addresses that are already assigned, and stay within the 10.18.10.0/24 range of addresses. (Choose two.) 10.18.10.200/28 10.18.10.208/28 10.18.10.240/27 10.18.10.224/28 10.18.10.200/27 10.18.10.224/27
10.18.10.208/28 10.18.10.224/28
Refer to the exhibit. Match the network with the correct IP address and prefix that will satisfy the usable host addressing requirements for each network. Network A Network B Network C Network D 192.168.0.96 /27 192.168.0.128 /25 192.168.0.80 /30 192.168.0.0 /26
192.168.0.96 /27 - Network C 192.168.0.128 /25 - Network A 192.168.0.80 /30 - Network D 192.168.0.0 /26 - Network B
Which subnet would include the address 192.168.1.96 as a usable host address? 192.168.1.64/26 192.168.1.32/27 192.168.1.32/28 192.168.1.64/29
192.168.1.64/26
What would be the interface ID of an IPv6 enabled interface with a MAC address of 1C-6F-65-C2-BD-F8 when the interface ID is generated by using the EUI-64 process? (countcountcount))=) 0C6F:65FF:FEC2:BDF8 1E6F:65FF:FEC2:BDF8 C16F:65FF:FEC2:BDF8 106F:65FF:FEC2:BDF8
1E6F:65FF:FEC2:BDF8
Refer to the exhibit. A network engineer has been given the network address of 192.168.99.0 and a subnet mask of 255.255.255.192 to subnet across the four networks shown. How many total host addresses are unused across all four subnets? 88 200 72 224 158
200
What is the subnet ID associated with the IPv6 address 2001:DA48:FC5:A4:3D1B::1/64? 2001:DA48::/64 2001:DA48:FC5::A4:/64 2001:DA48:FC5:A4::/64 2001::/64
2001:DA48:FC5:A4::/64
A network administrator is adding a new LAN to a branch office. The new LAN must support 61 connected devices. What is the smallest network mask that the network administrator can use for the new network? 255.255.255.240 255.255.255.224 255.255.255.192 255.255.255.128
255.255.255.192
What subnet mask is needed if an IPv4 network has 40 devices that need IP addresses and address space is not to be wasted? 255.255.255.0 255.255.255.240 255.255.255.128 255.255.255.192 255.255.255.224
255.255.255.192
A network administrator is adding a new LAN to a branch office. The new LAN must support 25 connected devices. What is the smallest network mask that the network administrator can use for the new network? 255.255.255.128 255.255.255.192 255.255.255.224 255.255.255.240
255.255.255.224
A network administrator wants to have the same network mask for all networks at a particular small site. The site has the following networks and number of devices:IP phones - 22 addressesPCs - 20 addresses neededPrinters - 2 addresses neededScanners - 2 addresses needed The network administrator has deemed that 192.168.10.0/24 is to be the network used at this site. Which single subnet mask would make the most efficient use of the available addresses to use for the four subnetworks? 255.255.255.192 255.255.255.252 255.255.255.240 255.255.255.248 255.255.255.0 255.255.255.224
255.255.255.224 (32 suits. 128 + 64 + 32 = 224)
A network administrator is adding a new LAN to a branch office. The new LAN must support 10 connected devices. What is the smallest network mask that the network administrator can use for the new network? 255.255.255.192 255.255.255.248 255.255.255.224 255.255.255.240
255.255.255.240
A network administrator wants to have the same subnet mask for three subnetworks at a small site. The site has the following networks and numbers of devices: Subnetwork A: IP phones - 10 addresses Subnetwork B: PCs - 8 addresses Subnetwork C: Printers - 2 addresses What single subnet mask would be appropriate to use for the three subnetworks? 255.255.255.0 255.255.255.240 255.255.255.248 255.255.255.252
255.255.255.240
An organization is assigned an IPv6 address block of 2001:db8:0:ca00::/56. How many subnets can be created without using bits in the interface ID space?
256
What service is provided by HTTP? Uses encryption to secure the exchange of text, graphic images, sound, and video on the web. Allows for data transfers between a client and a file server. An application that allows real-time chatting among remote users. A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.
A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.
What are three characteristics of the CSMA/CD process? (Choose three.) The device with the electronic token is the only one that can transmit after a collision. A device listens and waits until the media is not busy before transmitting. After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired. All of the devices on a segment see data that passes on the network medium. A jam signal indicates that the collision has cleared and the media is not busy. Devices can be configured with a higher transmission priority
A device listens and waits until the media is not busy before transmitting. After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired. All of the devices on a segment see data that passes on the network medium.
Which scenario describes a function provided by the transport layer? A student is using a classroom VoIP phone to call home. The unique identifier burned into the phone is a transport layer address used to contact another network device on the same network. A student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header. A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window. A corporate worker is accessing a web server located on a corporate network. The transport layer formats the screen so the web page appears properly no matter what device is being used to view the web site.
A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.
What service is provided by FTP? A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web. An application that allows real-time chatting among remote users. Allows for data transfers between a client and a file server. Uses encryption to secure the exchange of text, graphic images, sound, and video on the web.
Allows for data transfers between a client and a file server.
What service is provided by Internet Messenger? An application that allows real-time chatting among remote users. Allows remote access to network devices and servers. Resolves domain names, such as cisco.com, into IP addresses. Uses encryption to provide secure remote access to network devices and servers.
An application that allows real-time chatting among remote users.
Refer to the exhibit. If host A sends an IP packet to host B, what will the destination address be in the frame when it leaves host A? DD:DD:DD:DD:DD:DD 172.168.10.99 CC:CC:CC:CC:CC:CC 172.168.10.65 BB:BB:BB:BB:BB:BB AA:AA:AA:AA:AA:AA
BB:BB:BB:BB:BB:BB
What method is used to manage contention-based access on a wireless network? token passing CSMA/CA priority ordering CSMA/CD
C-onnection A-ccess CSMA/CA
Which two statements describe how to assess traffic flow patterns and network traffic types using a protocol analyzer? (Choose two.) Capture traffic on the weekends when most employees are off work. Capture traffic during peak utilization times to get a good representation of the different traffic types. Only capture traffic in the areas of the network that receive most of the traffic such as the data center. Perform the capture on different network segments. Only capture WAN traffic because traffic to the web is responsible for the largest amount of traffic on a network.
Capture traffic during peak utilization times to get a good representation of the different traffic types. Perform the capture on different network segments.
What happens when the transport input ssh command is entered on the switch vty lines? The SSH client on the switch is enabled. The switch requires a username/password combination for remote access. Communication between the switch and remote users is encrypted. The switch requires remote connections via a proprietary client software.
Communication between the switch and remote users is encrypted.
An administrator defined a local user account with a secret password on router R1 for use with SSH. Which three additional steps are required to configure R1 to accept only encrypted SSH connections? (Choose three.) Configure DNS on the router. Generate two-way pre-shared keys. Configure the IP domain name on the router. Generate the SSH keys. Enable inbound vty SSH sessions. Enable inbound vty Telnet sessions.
Configure the IP domain name on the router. Generate the SSH keys. Enable inbound vty SSH sessions.
Refer to the exhibit. Host B on subnet Teachers transmits a packet to host D on subnet Students. Which Layer 2 and Layer 3 addresses are contained in the PDUs that are transmitted from host B to the router 4 answers with 4 addresses
Correct one: Layer 2 destination address = 00-00-0c-94-36-ab Layer 2 source address = 00-00-0c-94-36-bb Layer 3 destination address = 172.16.20.200 Layer 3 source address = 172.16.10.200
A client packet is received by a server. The packet has a destination port number of 67. What service is the client requesting? FTP DHCP Telnet SSH
DHCP
A client packet is received by a server. The packet has a destination port number of 53. What service is the client requesting? DNS NetBIOS (NetBT) POP3 IMAP
DNS
Which two statements are correct about MAC and IP addresses during data transmission if NAT is not involved? (Choose two.) Destination IP addresses in a packet header remain constant along the entire path to a target host. Destination MAC addresses will never change in a frame that goes across seven routers. Every time a frame is encapsulated with a new destination MAC address, a new destination IP address is needed. Destination and source MAC addresses have local significance and change every time a frame goes from one LAN to another. A packet that has crossed four routers has changed the destination IP address four times.
Destination IP addresses in a packet header remain constant along the entire path to a target host. Destination and source MAC addresses have local significance and change every time a frame goes from one LAN to another
Which two statements describe features of an IPv4 routing table on a router? (Choose two.) If there are two or more possible routes to the same destination, the route associated with the higher metric value is included in the routing table. Directly connected interfaces will have two route source codes in the routing table: C and S. The netstat -r command can be used to display the routing table of a router. If a default static route is configured in the router, an entry will be included in the routing table with source code S. The routing table lists the MAC addresses of each active interface. It stores information about routes derived from the active router interfaces.
Directly connected interfaces will have two route source codes in the routing table: C and S. If a default static route is configured in the router, an entry will be included in the routing table with source code S.
A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured? Enter CTRL-Z at the privileged mode prompt. Exit global configuration mode. Power cycle the device. Reboot the device. Exit privileged EXEC mode and press Enter .
Exit privileged EXEC mode and press Enter
Which range of link-local addresses can be assigned to an IPv6-enabled interface? FEC0::/10 FDEE::/7 FE80::/10 FF00::/8
FE80::/10
A client packet is received by a server. The packet has a destination port number of 21. What service is the client requesting? FTP LDAP SLP SNMP
FTP
A network technician is researching the use of fiber optic cabling in a new technology center. Which two issues should be considered before implementing fiber optic media? (Choose two.) Fiber optic cabling requires different termination and splicing expertise from what copper cabling requires. Fiber optic cable is able to withstand rough handling. Fiber optic cabling requires specific grounding to be immune to EMI. Fiber optic provides higher data capacity but is more expensive than copper cabling. Fiber optic cabling is susceptible to loss of signal due to RFI.
Fiber optic cabling requires different termination and splicing expertise from what copper cabling requires. Fiber optic provides higher data capacity but is more expensive than copper cabling.
A client packet is received by a server. The packet has a destination port number of 80. What service is the client requesting? DHCP SMTP DNS HTTP
HTTP
A client packet is received by a server. The packet has a destination port number of 143. What service is the client requesting? IMAP FTP SSH Telnet
IMAP
Match the characteristic to the category. (Not all options are used.) contained in the Layer 3 header contained in the Layer 2 header separated into OUI and a unique identifier separated into a network portion and a unique identifier 32 or 128 bits 48 bits 64 bits IP address MAC address
IP address: contained in the Layer 3 header separated into a network portion and a unique identifier 32 or 128 bits MAC address: contained in the Layer 2 header separated into OUI and a unique identifier 48 bits NO: 64 bits
What two pieces of information are displayed in the output of the show ip interface brief command? (Choose two.) MAC addresses Layer 1 statuses next-hop addresses IP addresses interface descriptions speed and duplex settings
IP addresses Layer 1 statuses
What are two features of ARP? (Choose two.) When a host is encapsulating a packet into a frame, it refers to the MAC address table to determine the mapping of IP addresses to MAC addresses. If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply. An ARP request is sent to all devices on the Ethernet LAN and contains the IP address of the destination host and its multicast MAC address. If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast. If no device responds to the ARP request, then the originating node will broadcast the data packet to all devices on the network segment.
If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast. If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.
What mechanism is used by a router to prevent a received IPv4 packet from traveling endlessly on a network? It checks the value of the TTL field and if it is 0, it discards the packet and sends a Destination Unreachable message to the source host. It checks the value of the TTL field and if it is 100, it discards the packet and sends a Destination Unreachable message to the source host. It decrements the value of the TTL field by 1 and if the result is 0, it discards the packet and sends a Time Exceeded message to the source host. It increments the value of the TTL field by 1 and if the result is 100, it discards the packet and sends a Parameter Problem message to the source host.
It decrements the value of the TTL field by 1 and if the result is 0, it discards the packet and sends a Time Exceeded message to the source host.
What is an advantage to using a protocol that is defined by an open standard? A company can monopolize the market. The protocol can only be run on equipment from a specific vendor. An open standard protocol is not controlled or regulated by standards organizations. It encourages competition and promotes choices.
It encourages competition and promotes choices.
. How does the service password-encryption command enhance password security on Cisco routers and switches? It requires encrypted passwords to be used when connecting remotely to a router or switch with Telnet. It encrypts passwords that are stored in router or switch configuration files. It requires that a user type encrypted passwords to gain console access to a router or switch. It encrypts passwords as they are sent across the network.
It encrypts passwords that are stored in router or switch configuration files.
A client is using SLAAC to obtain an IPv6 address for its interface. After an address has been generated and applied to the interface, what must the client do before it can begin to use this IPv6 address? It must send a DHCPv6 INFORMATION-REQUEST message to request the address of the DNS server. It must send a DHCPv6 REQUEST message to the DHCPv6 server to request permission to use this address. It must send an ICMPv6 Router Solicitation message to determine what default gateway it should use. It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network.
It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network.
What is one main characteristic of the data link layer? It generates the electrical or optical signals that represent the 1 and 0 on the media. It converts a stream of data bits into a predefined code. It shields the upper layer protocol from being aware of the physical medium to be used in the communication. It accepts Layer 3 packets and decides the path by which to forward the packet to a remote network.
It shields the upper layer protocol from being aware of the physical medium to be used in the communication.
A host is trying to send a packet to a device on a remote LAN segment, but there are currently no mappings in the ARP cache. How will the device obtain a destination MAC address? It will send the frame and use its own MAC address as the destination. It will send an ARP request for the MAC address of the destination device. It will send the frame with a broadcast MAC address. It will send a request to the DNS server for the destination MAC address. It will send an ARP request for the MAC address of the default gateway.
It will send an ARP request for the MAC address of the default gateway.
Match the header field with the appropriate layer of the OSI model. (Not all options are used.) Source IP address Destination Port Number Destination options FCS (Frame check sequence) 802.2 header TTL Acknowledgement number Destination Mac Layer 4 Layer 3 Layer 2
Layer 4 (2) Destination Port Number Acknowledgement number Layer 3 (2) Source IP address TTL Layer 2 (3) 802.2 header Destination Mac FCS (Frame check sequence) Destination options - NO!
What service is provided by BOOTP? Uses encryption to secure the exchange of text, graphic images, sound, and video on the web. Allows for data transfers between a client and a file server. Legacy application that enables a diskless workstation to discover its own IP address and find a BOOTP server on the network. A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.
Legacy application that enables a diskless workstation to discover its own IP address and find a BOOTP server on the network.
Match each description to its corresponding term. (Not all options are used.) Message encoding Message sizing Message encapsulation the process of determining when to begin sending messages on a network the process of placing one message format inside another message format the process of unpacking one message format from another message format the process of converting information from one format into another acceptable for transmission the process of breaking up a long message into individual pieces before being sent over the network
Message encoding - the process of converting information from one format into another acceptable for transmission Message sizing - the process of breaking up a long message into individual pieces before being sent over the network message encapsulation - the process of placing one message format inside another message format
What is an advantage for small organizations of adopting IMAP instead of POP? POP only allows the client to store messages in a centralized way, while IMAP allows distributed storage. Messages are kept in the mail servers until they are manually deleted from the email client. When the user connects to a POP server, copies of the messages are kept in the mail server for a short time, but IMAP keeps them for a long time. IMAP sends and retrieves email, but POP only retrieves email.
Messages are kept in the mail servers until they are manually deleted from the email client.
What are two ICMPv6 messages that are not present in ICMP for IPv4? (Choose two.) Neighbor Solicitation Destination Unreachable Host Confirmation Time Exceeded Router Advertisement Route Redirection
Neighbor Solicitation Router Advertisement
Refer to the exhibit. PC1 issues an ARP request because it needs to send a packet to PC2. In this scenario, what will happen next? (choose two) PC2 will send an ARP reply with its MAC address. SW1 will send an ARP reply with the SW1 Fa0/1 MAC address. SW1 will send an ARP reply with the PC2 MAC address. PC2 will send an ARP reply with the PC2 MAC address. RT1 will send an ARP reply with the RT1 Fa0/0 MAC address. RT1 will send an ARP reply with the PC2 MAC address.
PC2 will send an ARP reply with its MAC address. PC2 will send an ARP reply with the PC2 MAC address
A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose three.) netsh interface ipv6 show neighbor arp -a tracert ping ipconfig nslookup telnet
PIN ping ipconfig nslookup
Which two protocols operate at the top layer of the TCP/IP protocol suite? (Choose two.) TCP DNS IP UDP POP Ethernet
POP DNS
A client packet is received by a server. The packet has a destination port number of 110. What service is the client requesting? DNS DHCP SMTP POP3
POP3
A network administrator notices that some newly installed Ethernet cabling is carrying corrupt and distorted data signals. The new cabling was installed in the ceiling close to fluorescent lights and electrical equipment. Which two factors may interfere with the copper cabling and result in signal distortion and data corruption? (Choose two.) crosstalk extended length of cabling RFI EMI signal attenuation
RFI EMI
Which connector is used with twisted-pair cabling in an Ethernet LAN? LC conector RJ 45 SC conector BNC RJ 11
RJ 45
What service is provided by DNS? Resolves domain names, such as cisco.com, into IP addresses. A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web. Allows for data transfers between a client and a file server. Uses encryption to secure the exchange of text, graphic images, sound, and video on the web.
Resolves domain names, such as cisco.com, into IP addresses.
What service is provided by POP3? Retrieves email from the server by downloading the email to the local mail application of the client. An application that allows real-time chatting among remote users. Allows remote access to network devices and servers. Uses encryption to provide secure remote access to network devices and servers.
Retrieves email from the server by downloading the email to the local mail application of the client.
Two pings were issued from a host on a local network. The first ping was issued to the IP address of the default gateway of the host and it failed. The second ping was issued to the IP address of a host outside the local network and it was successful. What is a possible cause for the failed ping? The default gateway is not operational. The default gateway device is configured with the wrong IP address. Security rules are applied to the default gateway device, preventing it from processing ping requests. The TCP/IP stack on the default gateway is not working properly.
Security rules are applied to the default gateway device, preventing it from processing ping requests.
Match the application protocols to the correct transport protocols FTP SMTP DHCP HTTP TFTP TCP UDP
TCP FTP HTTP SMTP UDP DHCP TFTP
A client packet is received by a server. The packet has a destination port number of 69. What service is the client requesting? DNS DHCP SMTP TFTP
TFTP
Which two statements are correct in a comparison of IPv4 and IPv6 packet headers? (Choose two.) The Source Address field name from IPv4 is kept in IPv6. The Version field from IPv4 is not kept in IPv6. The Destination Address field is new in IPv6. The Header Checksum field name from IPv4 is kept in IPv6. The Time-to-Live field from IPv4 has been replaced by the Hop Limit field in IPv6.
The Source Address field name from IPv4 is kept in IPv6. The Time-to-Live field from IPv4 has been replaced by the Hop Limit field in IPv6.
Refer to the exhibit. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem? Switch1> config t ^ % Invalid input detected at '^' market. The entire command, configure terminal, must be used. The administrator is already in global configuration mode. The administrator must first enter privileged EXEC mode before issuing the command. The administrator must connect via the console port to access global configuration mode.
The administrator must first enter privileged EXEC mode before issuing the command
What will happen if the default gateway address is incorrectly configured on a host? The host cannot communicate with other hosts in the local network. The host cannot communicate with hosts in other networks. A ping from the host to 127.0.0.1 would not be successful. The host will have to use ARP to determine the correct address of the default gateway. The switch will not forward packets initiated by the host.
The host cannot communicate with hosts in other networks
Data is being sent from a source PC to a destination server. Which three statements correctly describe the function of TCP or UDP in this situation? (Choose three.) The source port field identifies the running application or service that will handle data returning to the PC. The TCP process running on the PC randomly selects the destination port when establishing a session with the server. UDP segments are encapsulated within IP packets for transport across the network. The UDP destination port number identifies the application or service on the server which will handle the data. TCP is the preferred protocol when a function requires lower network overhead. The TCP source port number identifies the sending host on the network.
The source port field identifies the running application or service that will handle data returning to the PC. UDP segments are encapsulated within IP packets for transport across the network. The UDP destination port number identifies the application or service on the server which will handle the data.
The global configuration command ip default-gateway 172.16.100.1 is applied to a switch. What is the effect of this command? The switch can communicate with other hosts on the 172.16.100.0 network. The switch can be remotely managed from a host on another network. The switch is limited to sending and receiving frames to and from the gateway 172.16.100.1. The switch will have a management interface with the address 172.16.100.1.
The switch can be remotely managed from a host on another network.
Refer to the exhibit. What is wrong with the displayed termination The woven copper braid should not have been removed. The wrong type of connector is being used. The untwisted length of each wire is too long. The wires are too thick for the connector that is used.
The untwisted length of each wire is too long.
Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct? (Choose two.) This host does not have a default gateway configured. There are 4 hops between this device and the device at 192.168.100.1. There is connectivity between this device and the device at 192.168.100.1. The connectivity between these two hosts allows for videoconferencing calls. The average transmission time between the two hosts is 2 milliseconds.
There are 4 hops between this device and the device at 192.168.100.1. There is connectivity between this device and the device at 192.168.100.1.
Which value, that is contained in an IPv4 header field, is decremented by each router that receives a packet? Header Length Differentiated Services Time-to-Live Fragment Offset
Time-to-Live
Which type of security threat would be responsible if a spreadsheet add-on disables the local software firewall? brute-force attack Trojan horse DoS buffer overflow
Trojan horse
Match each item to the type of topology diagram on which it is typically identified. USB port on a desktop PC in a classroom location of a desktop PC in a classroom path of cables that connect rooms to wiring closets IP address of a server ---> Physical topology y diagram ---> logical topology diagram
USB port on a desktop PC in a classroom --> no path of cables that connect rooms to wiring closets --> Physical topology y diagram location of a desktop PC in a classroom --> Physical topology y diagram IP address of a server --> logical topology diagram
What are the two most effective ways to defend against malware? (Choose two.) Implement a VPN. Implement network firewalls. Implement RAID. Implement strong passwords. Update the operating system and other application software. Install and update antivirus software.
Update the operating system and other application software. Install and update antivirus software.
What service is provided by HTTPS? Uses encryption to provide secure remote access to network devices and servers. Resolves domain names, such as cisco.com, into IP addresses. Uses encryption to secure the exchange of text, graphic images, sound, and video on the web. Allows remote access to network devices and servers.
Uses encryption to secure the exchange of text, graphic images, sound, and video on the web.
Which wireless technology has low-power and data rate requirements making it popular in home automation applications? ZigBee LoRaWAN 5G Wi-Fi
ZigBee
Which wireless technology has low-power and low-data rate requirements making it popular in IoT environments? Bluetooth Zigbee WiMAX Wi-Fi
Zigbee
What characteristic describes a VPN? software on a router that filters traffic based on IP addresses or applications software that identifies fast-spreading threats a tunneling protocol that provides remote users with secure access into the network of an organization a network device that filters access and traffic coming into a network
a tunneling protocol that provides remote users with secure access into the network of an organization
What are two primary responsibilities of the Ethernet MAC sublayer? (Choose two.) error detection frame delimiting accessing the media data encapsulation logical addressing
accessing the media data encapsulation
Match each type of frame field to its function. (Not all options are used.) addressing error detection type frame start ...beginning... ...checks damage... ... identify Layer 3 protocol... ...direct the frame... ...special flow control services...
addressing - ...direct the frame... error detection - ...checks damage... type - ... identify Layer 3 protocol... frame start - ...beginning... no - ...special flow control services...
An IPv6 enabled device sends a data packet with the destination address of FF02::2. What is the target of this packet? all IPv6 enabled devices on the local link all IPv6 DHCP servers all IPv6 enabled devices across the network all IPv6 configured routers on the local link
all IPv6 configured routers on the local link
Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.) **Tricky question (LLC - *, Mac - **) V1) places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame adds Ethernet control information to network protocol data responsible for internal structure of Ethernet frame enables IPv4 and IPv6 to utilize the same physical medium implements trailer with frame check sequence for error detection V2) integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper handles communication between upper layer networking software and Ethernet NIC hardware implements CSMA/CD over legacy shared half-duplex media applies source and destination MAC addresses to Ethernet frame applies delimiting of Ethernet frame fields to synchronize communication between nodes
all true: places, implements, APPLIES SOURCE integrates,
Which two functions are performed at the LLC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.) *Tricky question (LLC - *, Mac - **) First case: implements CSMA/CD over legacy shared half-duplex media enables IPv4 and IPv6 to utilize the same physical medium integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper implements a process to delimit fields within an Ethernet 2 frame places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame
always: heap handles enables adds places
What characteristic describes a DoS attack? the use of stolen credentials to access private data a network device that filters access and traffic coming into a network software that is installed on a user device and collects information about the user an attack that slows or crashes a device or network service
an attack that slows or crashes a device or network service
Which three layers of the OSI model map to the application layer of the TCP/IP model? (Choose three.) application network data link session presentation transport
application session presentation
What characteristic describes antispyware? applications that protect end devices from becoming infected with malicious software a network device that filters access and traffic coming into a network software on a router that filters traffic based on IP addresses or applications a tunneling protocol that provides remote users with secure access into the network of an organization
applications that protect end devices from becoming infected with malicious software
What characteristic describes antivirus software? applications that protect end devices from becoming infected with malicious software a network device that filters access and traffic coming into a network a tunneling protocol that provides remote users with secure access into the network of an organization software on a router that filters traffic based on IP addresses or applications
applications that protect end devices from becoming infected with malicious software
Three bank employees are using the corporate network. The first employee uses a web browser to view a company web page in order to read some announcements. The second employee accesses the corporate database to perform some financial transactions. The third employee participates in an important live audio conference with other corporate managers in branch offices. If QoS is implemented on this network, what will be the priorities from highest to lowest of the different data types? financial transactions, web page, audio conference audio conference, financial transactions, web page financial transactions, audio conference, web page audio conference, web page, financial transactions
audio conference, financial transactions, web page
What are three commonly followed standards for constructing and installing cabling? (Choose three.) cost per meter (foot) cable lengths connector color pinouts connector types tensile strength of plastic insulator
cable lengths pinouts connector types
Match the characteristic to the forwarding method. always stores the entire frame checks the CRC before forwarding checks the frame length before forwarding does not forward broadcasts has low latency may forward runt frames begins forwarding when the destination address is received cut-through store-and-forward
cut-through has low latency may forward runt frames begins forwarding when the destination address is received store-and-forward always stores the entire frame checks the CRC before forwarding checks the frame length before forwarding no does not forward broadcasts
What are two functions that are provided by the network layer? (Choose two.) placing data on the network medium carrying data between processes that are running on source and destination hosts directing data packets to destination hosts on other networks providing dedicated end-to-end connections providing end devices with a unique network identifier
directing data packets to destination hosts on other networks providing end devices with a unique network identifier
What are two characteristics of IP? (Choose two.) does not require a dedicated end-to-end connection operates independently of the network media retransmits packets if errors occur re-assembles out of order packets into the correct order at the receiver end guarantees delivery of packets
does not require a dedicated end-to-end connection operates independently of the network media
Match a statement to the related network model. duplicated question
duplicated question
Which frame field is created by a source node and used by a destination node to ensure that a transmitted data signal has not been altered by interference, distortion, or signal loss? User Datagram Protocol field transport layer error check field flow control field frame check sequence field error correction process field
frame check sequence field
idiots skipped 152
idiots skipped 152
What are two common causes of signal degradation when using UTP cabling? (Choose two.) improper termination low-quality shielding in cable installing cables in conduit low-quality cable or connectors loss of light over long distances
improper termination low-quality cable or connectors
A network administrator is designing the layout of a new wireless network. Which three areas of concern should be accounted for when building a wireless network? (Choose three.) extensive cabling mobility options packet collision interference security coverage area
interference security coverage area
Which layer of the TCP/IP model provides a route to forward messages through an internetwork? application network access internet transport
internet
What two ICMPv6 message types must be permitted through IPv6 access control lists to allow resolution of Layer 3 addresses to Layer 2 MAC addresses? (Choose two.) neighbor solicitations echo requests neighbor advertisements echo replies router solicitations router advertisements
neighbor solicitations neighbor advertisements
technician can ping the IP address of the web server of a remote company but cannot successfully ping the URL address of the same web server. Which software utility can the technician use to diagnose the problem? tracert ipconfig netstat nslookup
nslookup
Match each description with the corresponding TCP mechanism. (Not all options are used.) used to identify missing segments of data number of bytes a destination device can accept and process at one time received by a sender before transmitting more segments in a session method of managing segments of data loss acknowledgement retransmission fcs window size sequence numbers
number of bytes a destination device can accept and process at one time - window size used to identify missing segments of data - sequence numbers method of managing segments of data loss - retransmission received by a sender before transmitting more segments in a session - acknowledgement FCS - no
A wired laser printer is attached to a home computer. That printer has been shared so that other computers on the home network can also use the printer. What networking model is in use? client-based master-slave point-to-point peer-to-peer (P2P)
peer-to-peer (P2P)
What are two characteristics shared by TCP and UDP? (Choose two.) default window size connectionless communication port numbering 3-way handshake ability to to carry digitized voice use of checksum
port numbering use of checksum
Match the firewall function to the type of threat protection it provides to the network. (Not all options are used.) prevents access by port number prevents access based on IP or MAC prevents unsolicited incomming sessions prevents access to websites packet filreting URL filtering network address translator stateful packet inspection application filtering
prevents access by port number -- application filtering prevents access based on IP or MAC -- packet filtering prevents unsolicited incomming sessions -- stateful packet inspection prevents access to websites -- URL filtering no ---- network address translator
What are proprietary protocols? protocols developed by private organizations to operate on any vendor hardware protocols that can be freely used by any organization or vendor protocols developed by organizations who have control over their definition and operation a collection of protocols known as the TCP/IP protocol suite
protocols developed by organizations who have control over their definition and operation
Refer to the exhibit. If PC1 is sending a packet to PC2 and routing has been configured between the two routers, what will R1 do with the Ethernet frame header attached by PC1? nothing, because the router has a route to the destination network remove the Ethernet header and configure a new Layer 2 header before sending it out S0/0/0 open the header and use it to determine whether the data is to be sent out S0/0/0 open the header and replace the destination MAC address with a new one
remove the Ethernet header and configure a new Layer 2 header before sending it out S0/0/0
Which two commands can be used on a Windows host to display the routing table? (Choose two.) netstat -r tracert route print netstat -s show ip route
route print netstat -r
An employee of a large corporation remotely logs into the company using the appropriate username and password. The employee is attending an important video conference with a customer concerning a large sale. It is important for the video quality to be excellent during the meeting. The employee is unaware that after a successful login, the connection to the company ISP failed. The secondary connection, however, activated within seconds. The disruption was not noticed by the employee or other employees.What three network characteristics are described in this scenario? (Choose three.) security powerline networking integrity fault tolerance quality of service scalability
security quality of service fault tolerance
What characteristic describes adware? a network device that filters access and traffic coming into a network software that is installed on a user device and collects information about the user the use of stolen credentials to access private data an attack that slows or crashes a device or network service
software that is installed on a user device and collects information about the user
What characteristic describes spyware? a network device that filters access and traffic coming into a network software that is installed on a user device and collects information about the user an attack that slows or crashes a device or network service the use of stolen credentials to access private data
software that is installed on a user device and collects information about the user
When a switch configuration includes a user-defined error threshold on a per-port basis, to which switching method will the switch revert when the error threshold is reached? cut-through store-and-forward fast-forward fragment-free
store-and-forward
Match the description to the IPv6 addressing component. (Not all options are used.) This part of the address is used by organisation to identify subnets This network portion of the address is assigned by the provider This part of the address is equivalent to the host portion of an IPv4 address global routing prefix subnet mask subnet ID interface ID
subnet ID -- This part of the address is used by organisation to identify subnets global routing prefix -- This network portion of the address is assigned by the provider interface ID -- This part of the address is equivalent to the host portion of an IPv4 address subnet mask ---- NO
During the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry? analyze the destination IP address switch the packet to the directly connected interface look up the next-hop address for the packet discard the traffic after consulting the route table
switch the packet to the directly connected interface
A user sends an HTTP request to a web server on a remote network. During encapsulation for this request, what information is added to the address field of a frame to indicate the destination? the network domain of the destination host the IP address of the default gateway the MAC address of the destination host the MAC address of the default gateway
the MAC address of the default gateway
Which information does the show startup-config command display? the IOS image copied into RAM the bootstrap program in the ROM the contents of the current running configuration file in the RAM the contents of the saved configuration file in the NVRAM
the contents of the saved configuration file in the NVRAM
Users are reporting longer delays in authentication and in accessing network resources during certain time periods of the week. What kind of information should network engineers check to find out if this situation is part of a normal network behavior? syslog records and messages the network performance baseline debug output and packet captures network configuration files
the network performance baseline
What characteristic describes identity theft? the use of stolen credentials to access private data software on a router that filters traffic based on IP addresses or applications software that identifies fast-spreading threats a tunneling protocol that provides remote users with secure access into the network of an organization
the use of stolen credentials to access private data
Why would a Layer 2 switch need an IP address? to enable the switch to send broadcast frames to attached PCs to enable the switch to function as a default gateway to enable the switch to be managed remotely to enable the switch to receive frames from attached PCs
to enable the switch to be managed remotely
A user is complaining that an external web page is taking longer than normal to load.The web page does eventually load on the user machine. Which tool should the technician use with administrator privileges in order to locate where the issue is in the network? ping nslookup tracert ipconfig /displaydns
tracert
Users report that the network access is slow. After questioning the employees, the network administrator learned that one employee downloaded a third-party scanning program for the printer. What type of malware might be introduced that causes slow performance of the network? virus worm phishing spam
worm
