NET - 125 MODULES 11-13

/27*

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

10.0.0.0/8* 172.16.0.0/12* 192.168.0.0/16*

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

255.255.255.128*

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?

62

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

224.0.0.0 - 239.255.255.255*

16. Which address prefix range is reserved for IPv4 multicast?

This is a private IP address.*

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?

198.133.219.17* 128.107.12.117* 64.104.78.227

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

62*

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

directed broadcast*

20. A message is sent to all hosts on a remote network. Which type of message is it?

192.168.1.96/28* 192.168.1.64/27*

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.)

FE80::1:4545:6578:ABC1*

22. Which address is a valid IPv6 link-local unicast address?

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

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

65536

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?

2001:db8:0:f000::/52*

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?

/60

26. Consider the following range of addresses: 2001:0DB8:BC15:00A0:0000::2001:0DB8:BC15:00A1:0000::2001:0DB8:BC15:00A2:0000::...2001:0DB8:BC15:00AF:0000:: THE PREFIX IS?

link-local*

27. What type of IPv6 address is FE80::1?

the MAC address of the IPv6 enabled interface*

29. What is used in the EUI-64 process to create an IPv6 interface ID on an IPv6 enabled interface?

255.255.255.224​*

3. Which subnet mask would be used if 5 host bits are available?

2001:DB8:BC15:A*

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

all IPv6 enabled devices on the local link​ or network*

31. An IPv6 enabled device sends a data packet with the destination address of FF02::1. What is the target of this packet?​

FE80::/10*

33. Which IPv6 prefix is reserved for communication between devices on the same link?

anycast

34. Which type of IPv6 address refers to any unicast address that is assigned to multiple hosts?

loopback* link-local*

35. What are two types of IPv6 unicast addresses? (Choose two.)

SLAAC

36. Which service provides dynamic global IPv6 addressing to end devices without using a server that keeps a record of available IPv6 addresses?

ICMPv6*

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

the TCP/IP stack on a network host*

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

4*

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

ICMP

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

time exceded*

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?

when the value of the Hop Limit field reaches zero*

43. A user executes a traceroute over IPv6. At what point would a router in the path to the destination device drop the packet?

to provide feedback of IP packet transmissions*

44. What is the purpose of ICMP messages?

the IP address of the outbound interface*

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

host unreachable*

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?

192.168.1.64/26*

48. Which subnet would include the address 192.168.1.96 as a usable host address?

all hosts in the same subnet*

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

one specific host*

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

address unreachable*

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?

a specially defined group of hosts*

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

subnetwork 192.168.1.64 subnet mask 255.255.255.192**

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?

2001:db8::a0b0:8:1*

60. Which is the compressed format of the IPv6 address 2001:0db8:0000:0000:0000:a0b0:0008:0001?

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

61. Which is the compressed format of the IPv6 address fe80:09ea:0000:2200:0000:0000:0fe0:0290?

2002:42:10:c400::909*

62. Which is the compressed format of the IPv6 address 2002:0042:0010:c400:0000:0000:0000:0909?

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

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

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

64. Which is the compressed format of the IPv6 address 2002:0420:00c4:1008:0025:0190:0000:0990?

fe80::220:b3f:f0e0:29*

66. Which is the compressed format of the IPv6 address fe80:0000:0000:0000:0220:0b3f:f0e0:0029?

three

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

beyond scope of the source address*

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?

network unreachable*

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?

port unreachable*

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?

62

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

1022

9. How many host addresses are available on the network 172.16.128.0 with a subnet mask of 255.255.252.0?

16*

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 site subsection to represent multiple geographical sites of the company, the sub-site section to represent multiple campuses at each site, and the subnet section to indicate each network segment separated by routers. With such a scheme, what is the maximum number of subnets achieved per sub-site?

R1

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?

172.16.19.255

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?

10.16.10.64/27*

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?

TUNNELING

The ipv6 packet is transported inside a ipv4 packet

translation

ipv6 packet are converted into ipv4 packets and vice versa

dual stack

the piv4 packets and ipv6 packets coexits in the same network