Cisco CCNA ITN Final Course Exam ( Version 7.00)

Match the description to the IPv6 addressing component. (Not all options are used.) This part of the address is used by an organization to identify subnets. This network portion of the address is assigned by the provider. This part of the address is the equivalent to the host portion of an IPV4 address.

Answer goes in order: Global routing prefix subnet ID interface ID

What method is used to manage contention-based access on a wireless network? token passing CSMA/CA priority ordering CSMA/CD

CSMA/CA

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 Explanation: For the subnet of 192.168.1.64/26, there are 6 bits for host addresses, yielding 64 possible addresses. However, the first and last subnets are the network and broadcast addresses for this subnet. Therefore, the range of host addresses for this subnet is 192.168.1.65 to 192.168.1.126. The other subnets do not contain the address 192.168.1.96 as a valid host address.

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? 0C6F:65FF:FEC2:BDF8 1E6F:65FF:FEC2:BDF8 C16F:65FF:FEC2:BDF8 106F:65FF:FEC2:BDF8

1E6F:65FF:FEC2:BDF8 Explanation: To derive the EUI-64 interface ID by using the MAC address 1C-6F-65-C2-BD-F8, three steps are taken. Change the seventh bit of the MAC address from a binary 0 to a binary 1 which changes the hex C, into a hex E. Insert hex digits FFFE into the middle of the address. Rewrite the address in IPv6 format. The three steps, when complete, give the interface ID of 1E6F:65FF:FEC2:BDF8.

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 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 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

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 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

255.255.255.248

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.

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. Explain: The source and destination port numbers are used to identify the correct application and window within that application.

Refer to the exhibit. Which protocol was responsible for building the table that is shown? DHCP ARP DNS ICMP

ARP Explanation: The table that is shown corresponds to the output of the arp -a command, a command that is used on a Windows PC to display the ARP table.

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.

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.

Match the application protocols to the correct transport protocols

Answer displayed on image

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. (Not all options are used.)

Answer displayed on image Explanation: Network A needs to use 192.168.0.0 /25 which yields 128 host addresses. Network B needs to use 192.168.0.128 /26 which yields 64 host addresses. Network C needs to use 192.168.0.192 /27 which yields 32 host addresses. Network D needs to use 192.168.0.224 /30 which yields 4 host addresses.

Match the characteristic to the forwarding method. (Not all options are used.)

Answer displayed on image Explanation: A store-and-forward switch always stores the entire frame before forwarding, and checks its CRC and frame length. A cut-through switch can forward frames before receiving the destination address field, thus presenting less latency than a store-and-forward switch. Because the frame can begin to be forwarded before it is completely received, the switch may transmit a corrupt or runt frame. All forwarding methods require a Layer 2 switch to forward broadcast frames.

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.

Answer displayed on image Explanation: Network A needs to use 192.168.0.128 /25, which yields 128 host addresses.Network B needs to use 192.168.0.0 /26, which yields 64 host addresses.Network C needs to use 192.168.0.96 /27, which yields 32 host addresses.Network D needs to use 192.168.0.80/30, which yields 4 host addresses.

Match the type of threat with the cause. (Not all options are used.)

Answers are displayed on image

Match each type of frame field to its function. (Not all options are used.)

Answers are displayed on the image

Which two protocols operate at the top layer of the TCP/IP protocol suite? (Choose two.) TCP IP UDP POP DNS Ethernet

POP and DNS

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. Explanation: Traffic flow patterns should be gathered during peak utilization times to get a good representation of the different traffic types. The capture should also be performed on different network segments because some traffic will be local to a particular segment.

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. Explanation: The transport input ssh command when entered on the switch vty (virtual terminal lines) will encrypt all inbound controlled telnet connections.

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.

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 type of server relies on record types such as A, NS, AAAA, and MX in order to provide services? DNS email file web

DNS Explain: A DNS server stores records that are used to resolve IP addresses to host names. Some DNS record types include the following: A - an end device IPv4 address NS - an authoritative name server AAAA - an end device IPv6 address MX - a mail exchange record

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 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 Explain: The Internet Protocol (IP) is a connectionless, best effort protocol. This means that IP requires no end-to-end connection nor does it guarantee delivery of packets. IP is also media independent, which means it operates independently of the network media carrying the packets.

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 Explain: Link-local addresses are in the range of FE80::/10 to FEBF::/10. The original IPv6 specification defined site-local addresses and used the prefix range FEC0::/10, but these addresses were deprecated by the IETF in favor of unique local addresses. FDEE::/7 is a unique local address because it is in the range of FC00::/7 to FDFF::/7. IPv6 multicast addresses have the prefix FF00::/8.

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

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

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. Explanation: IMAP and POP are protocols that are used to retrieve email messages. The advantage of using IMAP instead of POP is that when the user connects to an IMAP-capable server, copies of the messages are downloaded to the client application. IMAP then stores the email messages on the server until the user manually deletes those messages.

Which 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.

NAT introduces problems for some applications that require end-to-end connectivity. NAT provides a solution to slow down the IPv4 address depletion. Explanation: Network Address Translation (NAT) is a technology that is implemented within IPv4 networks. One application of NAT is to use private IP addresses inside a network and use NAT to share a few public IP addresses for many internal hosts. In this way it provides a solution to slow down the IPv4 address depletion. However, since NAT hides the actual IP addresses that are used by end devices, it may cause problems for some applications that require end-to-end connectivity.

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? 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 the PC2 MAC address. Explain: When a network device wants to communicate with another device on the same network, it sends a broadcast ARP request. In this case, the request will contain the IP address of PC2. The destination device (PC2) sends an ARP reply with its MAC address.

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

Match a statement to the related network model. (Not all options are used.)

Place the options in the following order: peer-to-peer network: no dedicated server is required client and server roles are set on a per request basis peer-to-peer application: requires a specific user interface a background service is required Explain: Peer-to-peer networks do not require the use of a dedicated server, and devices can assume both client and server roles simultaneously on a per request basis. Because they do not require formalized accounts or permissions, they are best used in limited situations. Peer-to-peer applications require a user interface and background service to be running, and can be used in more diverse situations.

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 Explain: Proprietary protocols have their definition and operation controlled by one company or vendor. Some of them can be used by different organizations with permission from the owner. The TCP/IP protocol suite is an open standard, not a proprietary protocol.

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 Explanation: The default gateway for host H1 is the router interface that is attached to the LAN that H1 is a member of. In this case, that is the G0/0 interface of R1. H1 should be configured with the IP address of that interface in its addressing settings. R1 will provide routing services to packets from H1 that need to be forwarded to remote networks.

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 and EMI

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.

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

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

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 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. Explanation: ARP requests are sent as broadcasts: (1) All nodes will receive them, and they will be processed by software, interrupting the CPU. (2) The switch forwards (floods) Layer 2 broadcasts to all ports. A switch does not change its MAC table based on ARP request or reply messages. The switch populates the MAC table using the source MAC address of all frames. The ARP payload is very small and does not overload the switch.

What is the consequence of configuring a router with the ipv6 unicast-routing global configuration command?​ All router interfaces will be automatically activated. The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages. Each router interface will generate an IPv6 link-local address.​ It statically creates a global unicast address on this router.​

The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages.

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? 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.

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.

The data flow is being tracked based on the source port number that is used by each application. Explanation: The source port number of an application is randomly generated and used to individually keep track of each session connecting out to the Internet. Each application will use a unique source port number to provide simultaneous communication from multiple applications through the Internet.

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.

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. Explanation: A default gateway address is typically configured on all devices to allow them to communicate beyond just their local network.In a switch this is achieved using the command ip default-gateway <ip address>.

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 switch can be remotely managed. One device is attached to a physical interface. The default SVI has been configured. Explain: Vlan1 is the default SVI. Because an SVI has been configured, the switch can be configured and managed remotely. FastEthernet0/0 is showing up and up, so a device is connected.

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. Explain: The output displays a successful Layer 3 connection between a host computer and a host at 19.168.100.1. It can be determined that 4 hops exist between them and the average transmission time is 1 milliseconds. Layer 3 connectivity does not necessarily mean that an application can run between the hosts.

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, and presentation layers Explanation: The TCP/IP model consists of four layers: application, transport, internet, and network access. The OSI model consists of seven layers: application, presentation, session, transport, network, data link, and physical. The top three layers of the OSI model: application, presentation, and session map to the application layer of the TCP/IP model.

Refer to the exhibit. 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

application, transport, Internet, and network access layers Explanation: The TCP/IP model contains the application, transport, internet, and network access layers. A file transfer uses the FTP application layer protocol. The data would move from the application layer through all of the layers of the model and across the network to the file server.

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 Explanation: QoS mechanisms enable the establishment of queue management strategies that enforce priorities for different categories of application data. Thus, this queuing enables voice data to have priority over transaction data, which has priority over web data.

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 After a user is successfully authenticated (logged into the server), the authorization is the process of determining what network resources the user can access and what operations (such as read or edit) the user can perform.

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

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 and low-quality cable or connectors Explanation: When terminated improperly, each cable is a potential source of physical layer performance degradation.

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 Explanation: The three areas of concern for wireless networks focus on the size of the coverage area, any nearby interference, and providing network security. Extensive cabling is not a concern for wireless networks, as a wireless network will require minimal cabling for providing wireless access to hosts. Mobility options are not a component of the areas of concern for wireless networks.

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

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 Explanation: Data is transmitted on copper cables as electrical pulses. A detector in the network interface of a destination device must receive a signal that can be successfully decoded to match the signal sent. However, the farther the signal travels, the more it deteriorates. This is referred to as signal attenuation.

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 communications to allow message transmission across a network? (Choose three.) message size message encoding connector specifications media selection delivery options end-device installation

message size, message encoding, and delivery options

A 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 Explain: Traceroute (tracert) is a utility that generates a list of hops that were successfully reached along the path from source to destination. This list can provide important verification and troubleshooting information. The ipconfig utility is used to display the IP configuration settings on a Windows PC. The Netstat utility is used to identify which active TCP connections are open and running on a networked host. Nslookup is a utility that allows the user to manually query the name servers to resolve a given host name. This utility can also be used to troubleshoot name resolution issues and to verify the current status of the name servers.

Match the firewall function to the type of threat protection it provides to the network. (Not all options are used.)

packet filtering - prevents access based on IP or MAC address URL filtering - prevents access to websites network address translator - (none) stateful packet inspection - prevents unsolicited incoming sessions application filtering - prevents access by port number Explain: Firewall products come packaged in various forms. These products use different techniques for determining what will be permitted or denied access to a network. They include the following: + Packet filtering - Prevents or allows access based on IP or MAC addresses+ Application filtering - Prevents or allows access by specific application types based on port numbers+ URL filtering - Prevents or allows access to websites based on specific URLs or keywords+ Stateful packet inspection (SPI) - Incoming packets must be legitimate responses to requests from internal hosts. Unsolicited packets are blocked unless permitted specifically. SPI can also include the capability to recognize and filter out specific types of attacks, such as denial of service (DoS)

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) Explanation: Peer-to-peer (P2P) networks have two or more network devices that can share resources such as printers or files without having a dedicated server.

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

ping ipconfig nslookup

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

provides for the exchange of frames over a common local media

A 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

reconnaissance Explanation: A reconnaissance attack is the unauthorized discovery and documentation of various computing networks, network systems, resources, applications, services, or vulnerabilities.

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 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

remove the Ethernet header and configure a new Layer 2 header before sending it out S0/0/0 Explanation: When PC1 forms the various headers attached to the data one of those headers is the Layer 2 header. Because PC1 connects to an Ethernet network, an Ethernet header is used. The source MAC address will be the MAC address of PC1 and the destination MAC address will be that of G0/0 on R1. When R1 gets that information, the router removes the Layer 2 header and creates a new one for the type of network the data will be placed onto (the serial link).

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 quality of service scalability powerline networking integrity fault tolerance

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

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 Explanation: The general format for IPv6 global unicast addresses includes a global routing prefix, a subnet ID, and an interface ID. The global routing prefix is the network portion of the address. A typical global routing prefix is /48 assigned by the Internet provider. The subnet ID portion can be used by an organization to create multiple subnetwork numbers. The interface ID is similar to the host portion of an IPv4 address.

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 Explanation: A router receives a packet on an interface and looks at the destination IP address. It consults its routing table and matches the destination IP address to a routing table entry. The router then discovers that it has to send the packet to the next-hop address or out to a directly connected interface. When the destination address is on a directly connected interface, the packet is switched over to that interface.

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

to request that a source decrease the rate at which it transmits data. Explanation: The TCP sliding window allows a destination device to inform a source to slow down the rate of transmission. To do this, the destination device reduces the value contained in the window field of the segment. It is acknowledgment numbers that are used to specify retransmission from a specific point forward. It is sequence numbers that are used to ensure segments arrive in order. Finally, it is a FIN control bit that is used to end a communication session.

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

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. 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 device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.

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.

Which layer of the TCP/IP model provides a route to forward messages through an internetwork? application network access internet transport

Internet Explain: The OSI model network layer corresponds directly to the internet layer of the TCP/IP model and is used to describe protocols that address and route messages through an internetwork.

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.

A host is trying to send a packet to a device on a remote LAN segment, but there are currently no mappings in its 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.

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? 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 Layer 2 destination address = 00-00-0c-94-36-dd 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 Layer 2 destination address = 00-00-0c-94-36-cd Layer 2 source address = 00-00-0c-94-36-bb Layer 3 destination address = 172.16.20.99 Layer 3 source address = 172.16.10.200 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 = 172.16.100.200

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

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.

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 LLC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.) 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

These are the possible correct answers, answers may vary depending on the type of test: enables IPv4 and IPv6 to utilize the same physical medium 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 handles communication between upper layer networking software and Ethernet NIC hardware Explanation: The data link layer is actually divided into two sublayers: + Logical Link Control (LLC): This upper sublayer defines the software processes that provide services to the network layer protocols. It places information in the frame that identifies which network layer protocol is being used for the frame. This information allows multiple Layer 3 protocols, such as IPv4 and IPv6, to utilize the same network interface and media. + Media Access Control (MAC): This lower sublayer defines the media access processes performed by the hardware. It provides data link layer addressing and delimiting of data according to the physical signaling requirements of the medium and the type of data link layer protocol in use.

Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.) handles communication between upper layer networking software and Ethernet NIC hardware implements trailer with frame check sequence for error detection places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame implements a process to delimit fields within an Ethernet 2 frame adds Ethernet control information to network protocol data

These are the possible correct answers, answers may vary depending on the type of test: implements trailer with frame check sequence for error detection implements a process to delimit fields within an Ethernet 2 frame responsible for internal structure of Ethernet frame 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 applies delimiting of Ethernet frame fields to synchronize communication between nodes

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 Explanation: A Trojan horse is software that does something harmful, but is hidden in legitimate software code. A denial of service (DoS) attack results in interruption of network services to users, network devices, or applications. A brute-force attack commonly involves trying to access a network device. A buffer overflow occurs when a program attempts to store more data in a memory location than it can hold.

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, and install and update antivirus software. Explanation: A cybersecurity specialist must be aware of the technologies and measures that are used as countermeasures to protect the organization from threats and vulnerabilities.

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 two traffic types use the Real-Time Transport Protocol (RTP)? (Choose two.) video web file transfer voice peer to peer

Video Voice

Which wireless technology has low-power and data rate requirements making it popular in home automation applications? ZigBee LoRaWAN 5G Wi-Fi

ZigBee Explanation: ZigBee is an IEEE 802.15.4 wireless standard designed for creating personal-area networks. Low energy, power, and data rate requirements make Zigbee a popular protocol for connecting home automation devices.