CISCO 1 FINAL
Which three statements characterize UDP? (Choose three.) UDP provides basic connectionless transport layer functions. UDP provides connection-oriented, fast transport of data at Layer 3. UDP relies on application layer protocols for error detection. UDP is a low overhead protocol that does not provide sequencing or flow control mechanisms. UDP relies on IP for error detection and recovery. UDP provides sophisticated flow control mechanisms.
UDP provides basic connectionless transport layer functions. UDP relies on application layer protocols for error detection. UDP is a low overhead protocol that does not provide sequencing or flow control mechanisms.
A company is expanding its business to other countries. All branch offices must remain connected to corporate headquarters at all times. Which network technology is required to support this requirement? LAN MAN WAN WLAN
WAN
privileged EXEC mode
accessed by entering enable command identified by a prompt ending with #
Which connection provides a secure CLI session with encryption to a Cisco network device? a console connection an AUX connection a Telnet connection an SSH connection
an SSH connection
A network engineer is analyzing reports from a recently performed network baseline. Which situation would depict a possible latency issue? a change in the bandwidth according to the show interfaces output a next-hop timeout from a traceroute an increase in host-to-host ping response times a change in the amount of RAM according to the show version output
an increase in host-to-host ping response times
A large corporation has modified its network to allow users to access network resources from their personal laptops and smart phones. Which networking trend does this describe? bring your own device video conferencing online collaboration cloud computing
bring your own device
How does quality of service help a network support a wide range of applications and services? by limiting the impact of a network failure by allowing quick recovery from network failures by providing mechanisms to manage congested network traffic by providing the ability for the network to grow to accommodate new users
by providing mechanisms to manage congested network traffic
What is a characteristic of UTP cabling? cancellation cladding immunity to electrical hazards woven copper braid or metallic foil
cancellation
Global Configuration Mode
changes made affect the operation of the device as a whole accessed by entering the configure terminal command
Which two roles can a computer assume in a peer-to-peer network where a file is being shared between two computers? (Choose two.) client master server slave transient
client server
Which networking model is being used when an author uploads one chapter document to a file server of a book publisher? peer-to-peer master-slave client/server point-to-point
client/server
Which two tasks are functions of the presentation layer? (Choose two.) compression addressing encryption session control authentication
compression encryption
Where are Cisco IOS debug output messages sent by default? Syslog server console line memory buffers vty lines
console line
What are the three primary functions provided by Layer 2 data encapsulation? (Choose three.) error correction through a collision detection method session control using port numbers data link layer addressing placement and removal of frames from the media detection of errors through CRC calculations delimiting groups of bits into frames conversion of bits into data signals
data link layer addressing detection of errors through CRC calculations delimiting groups of bits into frames
What addresses are mapped by ARP? destination MAC address to a destination IPv4 address destination IPv4 address to the source MAC address destination IPv4 address to the destination host name destination MAC address to the source IPv4 address
destination MAC address to a destination IPv4 address
What important information is added to the TCP/IP transport layer header to ensure communication and connectivity with a remote network device? timing and synchronization destination and source port numbers destination and source physical addresses destination and source logical network addresses
destination and source port numbers
If a device receives an Ethernet frame of 60 bytes, what will it do? drop the frame process the frame as it is send an error message to the sending device add random data bytes to make it 64 bytes long and then forward it
drop the frame
Which term refers to a network that provides secure access to the corporate offices by suppliers, customers and collaborators? Internet intranet extranet extendednet
extranet
Which switching method has the lowest level of latency? cut-through store-and-forward fragment-free fast-forward
fast-forward
What are two examples of the cut-through switching method? (Choose two.) store-and-forward switching fast-forward switching CRC switching fragment-free switching QOS switching
fast-forward switching fragment-free switching
What layer is responsible for routing messages through an internetwork in the TCP/IP model? internet transport network access session
internet
A medium-sized business is researching available options for connecting to the Internet. The company is looking for a high speed option with dedicated, symmetric access. Which connection type should the company choose? DSL dialup satellite leased line cable modem
leased line
user EXEC Mode
limit number of basic monitoring command the first entrance into CLI of an IOS device
At a minimum, which address is required on IPv6-enabled interfaces? link-local unique local site local global unicast
link-local
What type of IPv6 address is FE80::1? loopback link-local multicast global unicast
link-local
Physical topology diagram
location of a desktop PC in a classroom path of cables that connect rooms to wiring closets
When applied to a router, which command would help mitigate brute-force password attacks against the router? exec-timeout 30 service password-encryption banner motd $Max failed logins = 5$ login block-for 60 attempts 5 within 60
login block-for 60 attempts 5 within 60
Which example of malicious code would be classified as a Trojan horse? malware that was written to look like a video game malware that requires manual user intervention to spread between systems malware that attaches itself to a legitimate program and spreads to other programs when launched malware that can automatically spread from one system to another by exploiting a vulnerability in the target
malware that was written to look like a video game
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
When planning for network growth, where in the network should packet captures take place to assess network traffic? on as many different network segments as possible only at the edge of the network between hosts and the default gateway only on the busiest network segment
on as many different network segments as possible
Which two functions are primary functions of a router? (Choose two.) packet forwarding microsegmentation domain name resolution path selection flow control
packet forwarding path selection
A network team is comparing physical WAN topologies for connecting remote sites to a headquarters building. Which topology provides high availability and connects some, but not all, remote sites? mesh partial mesh hub and spoke point-to-point
partial mesh
A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized? presentation layer network layer physical layer data link layer
physical layer
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
enable secret
privileged EXEC mode
What is a key characteristic of the peer-to-peer networking model? wireless networking social networking without the Internet network printing using a print server resource sharing without a dedicated server
resource sharing without a dedicated server
Which two commands can be used on a Windows host to display the routing table? (Choose two.) netstat -s route print show ip route netstat -r tracert
route print netstat -r
What are two services provided by the OSI network layer? (Choose two.) performing error detection routing packets toward the destination encapsulating PDUs from the transport layer placement of frames on the media collision detection
routing packets toward the destination encapsulating PDUs from the transport layer
What characteristic of a network enables it to quickly grow to support new users and applications without impacting the performance of the service being delivered to existing users? reliability scalability quality of service accessibility
scalability
Which name is assigned to the transport layer PDU? bits data frame packet segment
segment
What is the process of dividing a data stream into smaller pieces before transmission? segmentation encapsulation encoding flow control
segmentation
A network technician suspects that a particular network connection between two Cisco switches is having a duplex mismatch. Which command would the technician use to see the Layer 1 and Layer 2 details of a switch port? show mac-address-table show ip interface brief show interfaces show running-config
show interfaces
What is the TCP mechanism used in congestion avoidance? three-way handshake socket pair two-way handshake sliding window
sliding window
What information is added during encapsulation at OSI Layer 3? source and destination MAC source and destination application protocol source and destination port number source and destination IP address
source and destination IP address
Which firewall feature is used to ensure that packets coming into a network are legitimate responses to requests initiated from internal hosts? stateful packet inspection URL filtering application filtering packet filtering
stateful packet inspection
Which frame forwarding method receives the entire frame and performs a CRC check to detect errors before forwarding the frame? cut-through switching store-and-forward switching fragment-free switching fast-forward switching
store-and-forward switching
Which type of UTP cable is used to connect a PC to a switch port? console rollover crossover straight-through
straight-through
When IPv4 addressing is manually configured on a web server, which property of the IPv4 configuration identifies the network and host portion for an IPv4 address? DNS server address subnet mask default gateway DHCP server address
subnet mask
Which command can an administrator issue on a Cisco router to send debug messages to the vty lines? terminal monitor logging console logging buffered logging synchronous
terminal monitor
What source IP address does a router use by default when the traceroute command is issued? the highest configured IP address on the router the lowest configured IP address on the router a loopback IP address the IP address of the outbound interface
the IP address of the outbound interface
A network administrator is measuring the transfer of bits across the company backbone for a mission critical financial application. The administrator notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.) the amount of traffic that is currently crossing the network the sophistication of the encapsulation method applied to the data the type of traffic that is crossing the network the latency that is created by the number of network devices that the data is crossing the bandwidth of the WAN connection to the Internet the reliability of the gigabit Ethernet infrastructure of the backbone
the amount of traffic that is currently crossing the networ the type of traffic that is crossing the network. the latency that is created by the number of network devices that the data is crossing
A user opens three browsers on the same PC to access www.cisco.com to search for certification course information. The Cisco web server sends a datagram as a reply to the request from one of the web browsers. Which information is used by the TCP/IP protocol stack in the PC to identify which of the three web browsers should receive the reply? the destination IP address the destination port number the source IP address the source port number
the destination port number
In computer communication, what is the purpose of message encoding? to convert information to the appropriate form for transmission to interpret information to break large messages into smaller frames to negotiate correct timing for successful communication
to convert information to the appropriate form for transmission
Why are port numbers included in the TCP header of a segment? to indicate the correct router interface that should be used to forward a segment to identify which switch ports should receive or forward the segment to determine which Layer 3 protocol should be used to encapsulate the data to enable a receiving host to forward the data to the appropriate application to allow the receiving host to assemble the packet in the proper order
to enable a receiving host to forward the data to the appropriate application
What are two ways that TCP uses the sequence numbers in a segment? (Choose two.) to identify missing segments at the destination to reassemble the segments at the remote location to specify the order in which the segments travel from source to destination to limit the number of segments that can be sent out of an interface at one time to determine if the packet changed during transit
to identify missing segments at the destination to reassemble the segments at the remote location
Why does a Layer 3 device perform the ANDing process on a destination IP address and subnet mask? to identify the broadcast address of the destination network to identify the host address of the destination host to identify faulty frames to identify the network address of the destination network
to identify the network address of the destination network
What is the purpose of having a converged network? to provide high speed connectivity to all end devices to make sure that all types of data packets will be treated equally to achieve fault tolerance and high availability of data network infrastructure devices to reduce the cost of deploying and maintaining the communication infrastructure
to reduce the cost of deploying and maintaining the communication infrastructure
What is the function of the HTTP GET message? to request an HTML page from a web server to send error information from a web server to a web client to upload content to a web server from a web client to retrieve client email from an email server using TCP port 110
to request an HTML page from a web server
What are two functions of NVRAM? (Choose two.) to store the routing table to retain contents when power is removed to store the startup configuration file to contain the running configuration file to store the ARP table
to retain contents when power is removed to store the startup configuration file
A dedicated server is not needed when implementing a peer-to-peer network. true false
true
Which procedure is used to reduce the effect of crosstalk in copper cables? requiring proper grounding connections twisting opposing circuit wire pairs together wrapping the bundle of wires with metallic shielding designing a cable infrastructure to avoid crosstalk interference avoiding sharp bends during installation
twisting opposing circuit wire pairs together
What are two actions performed by a Cisco switch? (Choose two.) building a routing table that is based on the first IP address in the frame header using the source MAC addresses of frames to build and maintain a MAC address table forwarding frames with unknown destination IP addresses to the default gateway utilizing the MAC address table to forward frames via the destination MAC address examining the destination MAC address to add new entries to the MAC address table
using the source MAC addresses of frames to build and maintain a MAC address table utilizing the MAC address table to forward frames via the destination MAC address
In what two situations would UDP be the preferred transport protocol over TCP? (Choose two.) when applications need to guarantee that a packet arrives intact, in sequence, and unduplicated when a faster delivery mechanism is needed when delivery overhead is not an issue when applications do not need to guarantee delivery of the data when destination port numbers are dynamic
when a faster delivery mechanism is needed when applications do not need to guarantee delivery of the data
Which domain name would be an example of a top-level domain? www.cisco.com cisco.com .com root.cisco.com
.com
What are the three ranges of IP addresses that are reserved for internal private use? (Choose three.) 10.0.0.0/8 64.100.0.0/14 127.16.0.0/12 172.16.0.0/12 192.31.7.0/24 192.168.0.0/16
10.0.0.0/8 172.16.0.0/12 192.168.0.0/16
What is the binary representation of 0xCA? 10111010 11010101 11001010 11011010
11001010
hich three addresses are valid public addresses? (Choose three.) 198.133.219.17 192.168.1.245 10.15.250.5 128.107.12.117 192.15.301.240 64.104.78.227
198.133.219.17 128.107.12.117 64.104.78.227
What is the most compressed representation of the IPv6 address 2001:0000:0000:abcd:0000:0000:0000:0001? 2001:0:abcd::1 2001:0:0:abcd::1 2001::abcd::1 2001:0000:abcd::1 2001::abcd:0:1
2001:0:0:abcd::1
How many usable IP addresses are available on the 192.168.1.0/27 network? 256 254 62 30 16 32
30
What are three characteristics of multicast transmission? (Choose three.) The source address of a multicast transmission is in the range of 224.0.0.0 to 224.0.0.255. A single packet can be sent to a group of hosts. Multicast transmission can be used by routers to exchange routing information. Routers will not forward multicast addresses in the range of 224.0.0.0 to 224.0.0.255. Computers use multicast transmission to request IPv4 addresses. Multicast messages map lower layer addresses to upper layer addresses.
A single packet can be sent to a group of hosts. Multicast transmission can be used by routers to exchange routing information. Routers will not forward multicast addresses in the range of 224.0.0.0 to 224.0.0.255.
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 method is used to manage contention-based access on a wireless network? CSMA/CD priority ordering CSMA/CA token passing
CSMA/CA
A wireless host needs to request an IP address. What protocol would be used to process the request? FTP HTTP DHCP ICMP SNMP
DHCP
A user is unable to reach the web site when typing http://www.cisco.com in a web browser, but can reach the same site by typing http://72.163.4.161. What is the issue? default gateway DHCP TCP/IP protocol stack DNS
DNS
What network service resolves the URL entered on a PC to the IP address of the destination server? DNS DHCP FTP SNMP
DNS
Which two protocols operate at the highest layer of the TCP/IP protocol stack? (Choose two.) DNS Ethernet IP POP TCP UDP
DNS POP
A home user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP connection type should be used? DSL dial-up satellite cell modem cable modem
DSL
What is one difference between the client-server and peer-to-peer network models? Only in the client-server model can file transfers occur. Every device in a peer-to-peer network can function as a client or a server. A peer-to-peer network transfers data faster than a transfer using a client-server network. A data transfer that uses a device serving in a client role requires that a dedicated server be present.
Every device in a peer-to-peer network can function as a client or a server.
Which range of link-local addresses can be assigned to an IPv6-enabled interface? FEC0::/10 FDEE::/7 FE80::/10 FF00::/8
FE80::/10
logical topology diagram
IP address of a server
What function does pressing the Tab key have when entering a command in IOS? It aborts the current command and returns to configuration mode. It exits configuration mode and returns to user EXEC mode. It moves the cursor to the beginning of the next line. It completes the remainder of a partially typed word in a command.
It completes the remainder of a partially typed word in a command.
What purpose does NAT64 serve in IPv6? It converts IPv6 packets into IPv4 packets. It translates private IPv6 addresses into public IPv6 addresses. It enables companies to use IPv6 unique local addresses in the network. It converts regular IPv6 addresses into 64-bit addresses that can be used on the Internet. It converts the 48-bit MAC address into a 64-bit host address that can be used for automatic host addressing.
It converts IPv6 packets into IPv4 packets.
What are two characteristics of fiber-optic cable? (Choose two.) It is not affected by EMI or RFI. Each pair of cables is wrapped in metallic foil. It combines the technique of cancellation, shielding, and twisting to protect data. It typically contains 4 pairs of fiber-optic wires. It is more expensive than UTP cabling is.
It is not affected by EMI or RFI. It is more expensive than UTP cabling is.
What are three characteristics of an SVI? (Choose three.) It is designed as a security protocol to protect switch ports. It is not associated with any physical interface on a switch. It is a special interface that allows connectivity by different types of media. It is required to allow connectivity by any device at any location. It provides a means to remotely manage a switch. It is associated with VLAN1 by default.
It is not associated with any physical interface on a switch. It provides a means to remotely manage a switch. It is associated with VLAN1 by default.
What is a characteristic of the LLC sublayer? It provides the logical addressing required that identifies the device. It provides delimitation of data according to the physical signaling requirements of the medium. It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media. It defines software processes that provide services to the physical layer.
It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.
What is the purpose of the command ping ::1? It tests the internal configuration of an IPv6 host. It tests the broadcast capability of all hosts on the subnet. It tests the multicast connectivity to all hosts on the subnet. It tests the reachability of the default gateway for the network.
It tests the internal configuration of an IPv6 host.
What will a host on an Ethernet network do if it receives a frame with a destination MAC address that does not match its own MAC address? It will discard the frame. It will forward the frame to the next host. It will remove the frame from the media. It will strip off the data-link frame to check the destination IP address.
It will discard the frame.
What unique address is embedded in an Ethernet NIC and used for communication on an Ethernet network? host address IP address MAC address network address k layer
MAC address
After several configuration changes are made to a router, the copy running-configuration startup-configuration command is issued. Where will the changes be stored? flash ROM NVRAM RAM the configuration register a TFTP server
NVRAM
Which service provides dynamic global IPv6 addressing to end devices without using a server that keeps a record of available IPv6 addresses? stateful DHCPv6 SLAAC static IPv6 addressing stateless DHCPv6
SLAAC
A technician configures a switch with these commands:SwitchA(config)# interface vlan 1 SwitchA(config-if)# ip address 192.168.1.1 255.255.255.0 SwitchA(config-if)# no shutdownWhat is the technician configuring? Telnet access SVI password encryption physical switchport access
SVI
Which statement accurately describes a TCP/IP encapsulation process when a PC is sending data to the network? Data is sent from the internet layer to the network access layer. Packets are sent from the network access layer to the transport layer. Segments are sent from the transport layer to the internet layer. Frames are sent from the network access layer to the internet layer.
Segments are sent from the transport layer to the internet layer.
A PC obtains its IP address from a DHCP server. If the PC is taken off the network for repair, what happens to the IP address configuration? The configuration is permanent and nothing changes. The address lease is automatically renewed until the PC is returned. The address is returned to the pool for reuse when the lease expires. The configuration is held by the server to be reissued when the PC is returned.
The address is returned to the pool for reuse when the lease expires.
What is one indication that a Windows computer did not receive an IPv4 address from a DHCP server? The computer cannot ping 127.0.0.1. Windows displays a DHCP timeout message. The computer receives an IP address that starts with 169.254 The computer cannot ping other devices on the same network with IP addresses in the 169.254.0.0/16 range.
The computer receives an IP address that starts with 169.254
Under which two circumstances will a switch flood a frame out of every port except the port that the frame was received on? (Choose two.) The frame has the broadcast address as the destination address. The destination address is unknown to the switch. The source address in the frame header is the broadcast address. The source address in the frame is a multicast address. The destination address in the frame is a known unicast address.
The frame has the broadcast address as the destination address. The destination address is unknown to the switch.
After making configuration changes on a Cisco switch, a network administrator issues a copy running-config startup-config command. What is the result of issuing this command? The new configuration will be stored in flash memory. The new configuration will be loaded if the switch is restarted. The current IOS file will be replaced with the newly configured file. The configuration changes will be removed and the original configuration will be restored.
The new configuration will be loaded if the switch is restarted.
During the encapsulation process, what occurs at the data link layer for a PC connected to an Ethernet network? An IP address is added. The logical address is added. The physical address is added. The process port number is added.
The physical address is added.
Which statement is true about variable-length subnet masking? Each subnet is the same size. The size of each subnet may be different, depending on requirements. Subnets may only be subnetted one additional time. Bits are returned, rather than borrowed, to create additional subnets.
The size of each subnet may be different, depending on requirements.
What are two characteristics of Ethernet MAC addresses? (Choose two.) They are globally unique. They are routable on the Internet. They are expressed as 12 hexadecimal digits. MAC addresses use a flexible hierarchical structure. MAC addresses must be unique for both Ethernet and serial interfaces on a device.
They are globally unique. They are expressed as 12 hexadecimal digits
What is a characteristic of multicast messages? They are sent to a select group of hosts. They must be acknowledged. They are sent to a single destination. They are sent to all hosts on a network.
They are sent to a select group of hosts.