Module 11-13 Exam Answers

1. What is the prefix length notation for the subnet mask 255.255.255.224? /25 /26 /27 /28

/27

11. What three blocks of addresses are defined by RFC 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

10.0.0.0/8 172.16.0.0/12 192.168.0.0/16

14. Refer to the exhibit. Considering the addresses already used and having to remain within the 10.16.10.0/24 network range, which subnet address could be assigned to the network containing 25 hosts? 10.16.10.160/26 10.16.10.128/28 10.16.10.64/27 10.16.10.224/26 10.16.10.240/27 10.16.10.240/28

10.16.10.64/27

9. How many host addresses are available on the network 172.16.128.0 with a subnet mask of 255.255.252.0? 510 512 1022 1024 2046 2048

1022

19. 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

128.107.12.117 198.133.219.17 64.104.78.227

Refer to the exhibit. A company is deploying an IPv6 addressing scheme for its network. The company design document indicates that the subnetportion 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

16

12. 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

172.16.19.255

48. 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

21. A company has a network address of 192.168.1.64 with a subnet mask of 255.255.255.192. The company wants to create two subnetworks that would contain 10 hosts and 18 hosts respectively. Which two networks would achieve that? (Choose two.) 192.168.1.16/28 192.168.1.64/27 192.168.1.128/27 192.168.1.96/28 192.168.1.192/28

192.168.1.64/27 192.168.1.96/28

49. Open the PT Activity. Perform the tasks in the activity instructions and then answer the question. What are the three IPv6 addresses displayed when the route from PC1 to PC2 is traced? (Choose three.) 2001:DB8:1:1::1 2001:DB8:1:1::A 2001:DB8:1:2::2 2001:DB8:1:2::1 2001:DB8:1:3::1 2001:DB8:1:3::2 2001:DB8:1:4::1

2001:DB8:1:1::1 2001:DB8:1:2::1 2001:DB8:1:3::2

30. 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

2001:DB8:BC15:A

25. Given IPv6 address prefix 2001:db8::/48, what will be the last subnet that is created if the subnet prefix is changed to /52? 2001:db8:0:f00::/52 2001:db8:0:8000::/52 2001:db8:0:f::/52 2001:db8:0:f000::/52

2001:db8:0:f000::/52

60. 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

2001:db8::a0b0:8:1

65. Which is the compressed format of the IPv6 address 2001:0db8:0000:0000:0000:a0b0:0008:0001? 2001:db8::a0b0:8:1 2001:db8:1::ab8:0:1 2001:db8::ab8:1:0:1000 2001:db8:0:1::8:1

2001:db8::a0b0:8:1

67. 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:db8:0:1::8:1

2001:db8::a0b0:8:1

63. Which is the compressed format of the IPv6 address 2001:0db8:0000:0000:0ab8:0001:0000:1000? 2001:db8::ab8:1:0:1000 2001:db8::a0b0:8:1 2001:db8:1::ab8:0:1 2001:db8:0:1::8:1

2001:db8::ab8:1:0:1000

64. Which is the compressed format of the IPv6 address 2002:0420:00c4:1008:0025:0190:0000:0990? 2002:420:c4:1008:25:190::990 2002:42:10:c400::909 2002:4200::25:1090:0:99 2002:42::25:1090:0:99

2002:420:c4:1008:25:190::990

62. Which is the compressed format of the IPv6 address 2002:0042:0010:c400:0000:0000:0000:0909? 2002:42:10:c400::909 200:420:110:c4b::910:0:90 2002:4200::25:1090:0:99 2002:42::25:1090:0:99

2002:42:10:c400::909

68. Which is the compressed format of the IPv6 address 2002:0042:0010:c400:0000:0000:0000:0909? 2002:42:10:c400::909 2002:4200::25:1090:0:99 2002:420:c4:1008:25:190::990 2002:42::25:1090:0:99

2002:42:10:c400::909

16. Which address prefix range is reserved for IPv4 multicast? 240.0.0.0 - 254.255.255.255 224.0.0.0 - 239.255.255.255 169.254.0.0 - 169.254.255.255 127.0.0.0 - 127.255.255.255

224.0.0.0 - 239.255.255.255

13. 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

255.255.255.128

3. Which subnet mask would be used if 5 host bits are available? 255.255.255.0 255.255.255.128 255.255.255.224​ 255.255.255.240

255.255.255.224​

23. Which of these addresses is the shortest abbreviation for the IP address: 3FFE:1044:0000:0000:00AB:0000:0000:0057? 3FFE:1044::AB::57 3FFE:1044::00AB::0057 3FFE:1044:0:0:AB::57 3FFE:1044:0:0:00AB::0057 3FFE:1044:0000:0000:00AB::57 3FFE:1044:0000:0000:00AB::0057

3FFE:1044:0:0:AB::57

4. A network administrator subnets the 192.168.10.0/24 network into subnets with /26 masks. How many equal-sized subnets are created? 1 2 4 8 16 64

4

15. What is the usable number of host IP addresses on a network that has a /26 mask? 256 254 64 62 32 16

62

2. How many valid host addresses are available on an IPv4 subnet that is configured with a /26 mask? 254 190 192 62 64

62

8. How many host addresses are available on the 192.168.10.128/26 network? 30 32 60 62 64

62

24. 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

65536

33. Which IPv6 prefix is reserved for communication between devices on the same link? FC00::/7 2001::/32 FE80::/10 FDFF::/7

FE80::/10

22. Which address is a valid IPv6 link-local unicast address? FEC8:1::FFFF FD80::1:1234 FE80::1:4545:6578:ABC1 FE0A::100:7788:998F FC90:5678:4251:FFFF

FE80::1:4545:6578:ABC1

41. Which protocol is used by the traceroute command to send and receive echo-requests and echo-replies? SNMP ICMP Telnet TCP

ICMP

37. Which protocol supports Stateless Address Autoconfiguration (SLAAC) for dynamic assignment of IPv6 addresses to a host? ARPv6 DHCPv6 ICMPv6 UDP

ICMPv6

40. Refer to the exhibit. An administrator is trying to troubleshoot connectivity between PC1 and PC2 and uses the tracert command from PC1 to do it. Based on the displayed output, where should the administrator begin troubleshooting? PC2 R1 SW2 R2 SW1

R1

36. 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

18. 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 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.

This is a private IP address.

53. 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

a specially defined group of hosts

52. A user issues a ping 2001:db8:FACE:39::10 command and receives a response that includes a code of 3. What does this code represent? address unreachable network unreachable host unreachable protocol unreachable

address unreachable

72. A user issues a ping fe80:65ab:dcc1::100 command and receives a response that includes a code of 3. What does this code represent? address unreachable communication with the destination administratively prohibited beyond scope of the source address no route to destination

address unreachable

50. A host is transmitting a broadcast. Which host or hosts will receive it? all hosts in the same subnet a specially defined group of hosts the closest neighbor on the same network all hosts on the Internet

all hosts in the same subnet

58. A host is transmitting a broadcast. Which host or hosts will receive it? all hosts in the same subnet one specific host the closest neighbor on the same network directly connected network devices

all hosts in the same subnet

34. Which type of IPv6 address refers to any unicast address that is assigned to multiple hosts? unique local global unicast link-local anycast

anycast

70. 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

beyond scope of the source address

77. 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 host unreachable protocol unreachable network unreachable

beyond scope of the source address

20. A message is sent to all hosts on a remote network. Which type of message is it? limited broadcast multicast directed broadcast unicast

directed broadcast

61. Which is the compressed format of the IPv6 address fe80:09ea:0000:2200:0000:0000:0fe0:0290? fe80:9ea:0:2200::fe0:290 fe80:9:20::b000:290 fe80:9ea0::2020:0:bf:e0:9290 fe80:9ea0::2020::bf:e0:9290

fe80:9ea:0:2200::fe0:290

69. Which is the compressed format of the IPv6 address fe80:09ea:0000:2200:0000:0000:0fe0:0290? fe80:9ea:0:2200::fe0:290 fe80:9ea0::2020:0:bf:e0:9290 fe80::220:b3f:f0e0:29 fe80::0220:0b3f:f0e0:0029

fe80:9ea:0:2200::fe0:290

66. Which is the compressed format of the IPv6 address fe80:0000:0000:0000:0220:0b3f:f0e0:0029? fe80::220:b3f:f0e0:29 fe80:9ea:0:2200::fe0:290 = fe80:9ea0::2020:0:bf:e0:9290 fe80:9ea0::2020::bf:e0:9290

fe80::220:b3f:f0e0:29

47. 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

host unreachable

71. 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 beyond scope of the source address address unreachable communication with the destination administratively prohibited

host unreachable

7. What type of IPv6 address is FE80::1? loopback link-local multicast global unicast

link-local

35. What are two types of IPv6 unicast addresses? (Choose two.) multicast loopback link-local anycast broadcast

loopback link-local

73. A user issues a ping 10.10.14.67 command and receives a response that includes a code of 0. What does this code represent? network unreachable protocol unreachable port unreachable host unreachable

network unreachable

75. 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

network unreachable

51. 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

one specific host

74. A user issues a ping fe80:65ab:dcc1::100 command and receives a response that includes a code of 4. What does this code represent? port unreachable host unreachable protocol unreachable network unreachable

port unreachable

76. A user issues a ping 2001:db8:3040:114::88 command and receives a response that includes a code of 4 . What does this code represent? port unreachable host unreachable protocol unreachable network unreachable

port unreachable

6. 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

subnetwork 192.168.1.64subnet mask 255.255.255.192

45. 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

the IP address of the outbound interface

29. What is used in the EUI-64 process to create an IPv6 interface ID on an IPv6 enabled interface? the MAC address of the IPv6 enabled interface a randomly generated 64-bit hexadecimal address an IPv6 address that is provided by a DHCPv6 server an IPv4 address that is configured on the interface

the MAC address of the IPv6 enabled interface

39. A technician uses the ping 127.0.0.1 command. What is the technician testing? the TCP/IP stack on a network host connectivity between two adjacent Cisco devices connectivity between a PC and the default gateway connectivity between two PCs on the same network physical connectivity of a particular PC and the network

the TCP/IP stack on a network host

7. How many bits must be borrowed from the host portion of an address to accommodate a router with five connected networks? two three four five

three

42. Which ICMPv6 message is sent when the IPv6 hop limit field of a packet is decremented to zero and the packet cannot be forwarded? network unreachable time exceeded protocol unreachable port unreachable

time exceeded

44. 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

to provide feedback of IP packet transmissions

43. A user executes a traceroute over IPv6. At what point would a router in the path to the destination device drop the packet? when the value of the Hop Limit field reaches 255 when the value of the Hop Limit field reaches zero when the router receives an ICMP time exceeded message when the target host responds with an ICMP echo reply message

when the value of the Hop Limit field reaches zero