Test Bank | Ch9 TCP/IP Transport Protocols – 4th Ed

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Chapter 6: Neighbor Discovery in IPv6

Student: ___________________________________________________________________________

1. Neighbor Discovery has five functional processes. 
True    False

2. Upon start-up, Neighbor Discovery collects information about how nodes configure their IPv6 addresses to communicate on the network. 
True    False

3. Neighbor Discovery makes abundant use of messages. 
True    False

4. ND takes over the functions that ARP and Reverse ARP handled in IPv4. 
True    False

5. Home Agents may include the Home Agent Information option in their Router Advertisement messages, but it should not be included if the Home Agent (H) bit is not set. 
True    False

6. The IPv6 Neighbor Discovery (ND) protocol is specified in RFC 4861 and RFC ____. 
A. 4191
B. 4917
C. 5942
D. 6275

7. ____ uses ICMPv6 type 133 messages. 
A. Router Solicitation
B. Router Advertisement
C. Neighbor Advertisement
D. Neighbor Solicitation

8. ____ uses ICMPv6 type 134 messages. 
A. Router Solicitation
B. Router Advertisement
C. Neighbor Advertisement
D. Neighbor Solicitation

9. ____ uses ICMPv6 type 135 messages. 
A. Router Solicitation
B. Router Advertisement
C. Neighbor Advertisement
D. Neighbor Solicitation

10. ____ uses ICMPv6 type 136 messages. 
A. Router Solicitation
B. Router Advertisement
C. Neighbor Advertisement
D. Neighbor Solicitation

11. ____ use ICMPv6 type 137 messages. 
A. Router Solicitation
B. Router Advertisement
C. Neighbor Advertisement
D. Redirect

12. ND makes use of multicast addresses, such as the “____” address with link-local scope (FF02::2). 
A. all nodes
B. all routers
C. all proxies
D. all domains

13. ND makes use of multicast addresses, such as the “____” address with link-local scope (FF02::1). 
A. all nodes
B. all routers
C. all proxies
D. all domains

14. Neighbor Discovery performs many of the functions that ICMP Router Discovery and ICMP ____ handled in IPv4. 
A. Neighbor Solicitation
B. Host Discovery
C. Node Discovery
D. Redirect

15. IPv6 Neighbor Solicitation protocol can be compared with IPv4 ____. 
A. ARP Request
B. Router Solicitation
C. Router Advertisement
D. Redirect

16. IPv6 Router Advertisement protocol can be compared with IPv4 ____. 
A. ARP Request
B. Router Solicitation
C. Router Advertisement
D. Redirect

17. IPv6 Duplicate Address Detection protocol can be compared with IPv4 ____. 
A. ARP Request
B. Gratuitous ARP
C. Router Advertisement
D. Redirect

18. In the ICMPv6 Router Solicitation message, the ____ field is an unused field that is set to 0 by the source node and ignored by the destination node. 
A. Reserved
B. Options
C. Checksum
D. Type

19. By default, IPv6 nodes will send a ____ multicast request for configuration parameters immediately upon start-up. 
A. Router Advertisement
B. Router Solicitation
C. Neighbor Advertisement
D. Neighbor Solicitation

20. Routers periodically send ____ messages to inform hosts of link prefixes (if address autoconfiguration is enabled), link MTU, valid and preferred lifetimes, and other possible options. 
A. Router Solicitation
B. Neighbor Advertisement
C. Router Advertisement
D. Neighbor Solicitation

21. ____ help keep local routing optimized in the face of changing conditions and also reflect status as various destinations come on- and off-link. 
A. Route Advertisement
B. Neighbor Advertisement
C. Route Solicitation
D. Redirects

22. The Target Link-Layer Address option is used in Neighbor Advertisement and ____ messages. 
A. Neighbor Advertisement
B. Router Advertisement
C. Router Solicitation
D. Neighbor Solicitation

23. The ____ option is sent in Router Advertisement messages to provide a common MTU value for nodes on the same network segment. 
A. Prefix Information
B. Target Link-Layer Address
C. Redirected Header
D. MTU

24. The ____ option, if included, is used in Mobile IPv6 by mobile nodes receiving Router Advertisement messages for their movement detection algorithm. 
A. Target Link Layer Address
B. Redirected Header
C. Advertisement Interval
D. Home Agent Information

25. A node invokes the ____ process when it wants to send a packet to an on-link neighbor but the sender does not know the link-layer address for the target node. 
A. Address Resolution
B. Duplicate Address Detection
C. Router Discovery
D. Redirect Function

26. ____ is used by nodes to discover neighbor routers on the local link, learn prefixes, configure their default gateway, and other possible configuration parameters relating to autoconfiguration (stateless or stateful) useful to the node. 
A. Address Resolution
B. Duplicate Address Detection
C. Router Discovery
D. Redirect Function

27. A router might use ____________________ messages to balance traffic loads across multiple interfaces. 
________________________________________

28. The ____________________ address is a multicast address with link-local scope that helps reduce the number of multicast groups to which nodes must subscribe to make themselves available for solicitation by other nodes on their local links. 
________________________________________

29. Routers reply to Router Solicitation messages received by a node using ____________________ messages. 
________________________________________

30. A node can send a(n) ____________________ message to find (or verify) the link-layer address of a local node, to see if a node is still available, or to check that its own address is not already in use by another node. 
________________________________________

31. Routers send ____________________ messages to inform a host of a better first-hop router for a destination. 
________________________________________

32. Match each item with a statement below. 

33. Briefly describe the following ICMPv6 message types: Router Solicitation, Router Advertisement, and Redirect. 

34. Briefly describe the following ICMPv6 message types: Neighbor Solicitation and Neighbor Advertisement. 

35. What information does an IPv6 Router Solicitation message contain for Ethernet interfaces? 

36. What information does an IPv6 Router Advertisement message contain for Ethernet interfaces? 

37. What information does an IPv6 Neighbor Solicitation message contain for Ethernet interfaces? 

38. What is a conceptual host model? 

39. What neighbor data should be stored on a host? 

40. Briefly describe the conceptual sending algorithm. 

41. What are the processes involved with Neighbor Discovery? 

42. What are the five stages for a neighbor cache entry defined in RFC 4861? 

Chapter 6: Neighbor Discovery in IPv6