exam4/ CCNA

What is the prefix length notation for the subnet mask 255.255.255.224?

/25 /26 /27 /28

What three blocks of addresses are defined by FC 1918 for private network use? (Choose three.)

10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 100.64.0.0/14 169.254.0.0/16 239.0.0.0/8

A network administrator has received the IPV6 prefix 2001:DB8::/48 for subnetting. Assuming the administrator does not subnet into the interface ID portion of the address space, how many subnets can the administrator create from the /48 prefix?

16 256 4096 65536

Refer to the exhibit. An administrator must send a message to everyone on the router A network. What is the broadcast address for network 172.16.16.0/22?

172.16.16.255 172.16.20.255 172.16.19.255 172.16.23.255 172.16.255.255

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

Which three addresses are valid public addresses? (Choose three.)

198.133.219.17 192.168.1.245 10.15.250.5 128.107.12.117 172.31.1.25 64.104.78.227

What is the prefix for the host address 2001:DB8:BC15:A:12AB::1/64?

2001:DB8:BC15 2001:DB8:BC15:A 2001:DB8:BC15:A:1 2001:DB8:BC15:A:12

Which is the compressed format of the IPV6 address 2001:0db8:0000:0000:0000:a0b0:0008:0001?

2001:db8::a0b0:8:1 2001:db8::ab8:1:0:1000 2001:db80:0:1::80:1 2001:db80:::1::80:1

A site administrator has been told that a particular network at the site must accommodate 126 hosts. Which subnet mask would be used that contains the required number of host bits?

255.255.255.0 255.255.255.128 255.255.255.224 255.255.255.240

What is the usable number of host IP addresses on a network that has a /26 mask?

62

How many host addresses are available on the 192.168.10.128/26 network?

64 addresses,

Which protocol is used by the traceroute command to send and receive echo-requests and echo-replies?

ICMP (Internet Control Message Protocol)

A high school in New York (school A) is using videoconferencing technology to establish student interactions with another high school (school B) in Russia. The videoconferencing is conducted between two end devices through the Internet. The network administrator of school A I configures the end device with the IP address 209.165.201.10. The administrator sends a request for the IP address for the end device in school B and the response is 192.168.25.10. Neither school is using a VPN. The administrator knows immediately that this IP will not work. Why?

This is a loopback address. This is a link-local address. This is a private IP address. There is an IP address conflict.

A host is transmitting a multicast. Which host or hosts will receive it?

a specially defined group of hosts one specific host all hosts with the same IP address the closest neighbor on the same network

Which type of IPV6 address refers to any unicast address that is assigned to multiple hosts?

anycast address

A user issues a ping 2001:db8:FACE:39::10 command and receives a response that includes a code of 2. What does this code represent?

beyond scope of the source address communication with the destination administratively prohibited address unreachable no route to destination

A user issues a ping 198.133.219.8 command and receives a response that includes a code of 0. What does this code represent?

network unreachable protocol unreachable port unreachable host unreachable

A host is transmitting a unicast. Which host or hosts will receive it?

one specific host a specially defined group of hosts all hosts on the Internet the closest neighbor on the same network

An administrator wants to create four subnetworks from the network address 192.168.1.0/24. What is the network address and subnet mask of the second useable subnet?

subnetwork 192.168.1.64subnet mask 255.255.255.192 subnetwork 192.168.1.32subnet mask 255.255.255.240 subnetwork 192.168.1.64subnet mask 255.255.255.240 subnetwork 192.168.1.128subnet mask 255.255.255.192 subnetwork 192.168.1.8subnet mask 255.255.255.224

What source IP address does a router use by default when the traceroute command is issued?

the highest configured IP address on the router a loopback IP address the IP address of the outbound interface the lowest configured IP address on the router

What is the purpose of ICMP messages?

to inform routers about network topology changes to ensure the delivery of an IP packet to provide feedback of IP packet transmissions to monitor the process of a domain name to IP address resolution

A technician uses the ping 127.0.0.1 command. What is the technician testing?

verifying the TCP/IP protocol stack on that particular device

Refer to the exhibit. A company is deploying an IPV6 addressing scheme for its network. The company design document indicates that the subnet portion of the IPV6 addresses is used for the new hierarchical network design, with the s ite subsection to represent multiple geographical sites of the company. the s ub-site section to represent multiple campuses at each site, and the s ubnet section to indicate each network segment separated by routers. With such a scheme, what is the maximum number of subnets achieved per sub-site?

0 4 16 256

A user issues a ping 192.135.250.103 command and receives a response that includes a code of 1. What does this code represent?

host unreachable protocol unreachable port unreachable network unreachable