Florida Gulf Coast University

GEB 3250

Chapter 10 Quiz

1) IGMP is a companion to the                           protocol.

1. UDP
2. TCP
3. ICM
4. none of the above

2. ) IGMP is                         protocol.

1. an error reporting
2. a group management
3. a transmission
4. none of the above

3. ) IGMP helps a                             router create and update a list of loyal members related to each router

interface.

1. broadcast
2. unicast
3. multicast
4. none of the above

4. ) IGMP operates                                .

1. locally
2. globally
3. both a and b
4. none of the above

5. ) An IGMP query is sent from a                               to a                     .

1. host; host
2. host; router
3. router; host or router
4. none of the above

6. ) The                       is used by a router in response to a received leave report.

1. general query message
2. special query message
3. membership report
4. none of the above

7. ) The least significant 23 bits in a 48-bit Ethernet address identify a                                          .

1. multicast router
2. host
3. multicast group
4. none of the above

8. ) The                       field of the IGMP message is all zeros in a query message.

1. version
2. type
3. group address
4. none of the above

9. ) The                       field of the IGMP message is 17 for a query message.

1. maximum response time
2. type
3. checksum
4. none of the above

10. ) A multicast message is sent from                             to                    .

1. one source; one destination
2. one source; multiple destinations
3. multiple sources; one destination
4. none of the above

11. ) In networks that do not support physical multicast addressing, multicasting can be accomplished

through                      .

1. mapping
2. queries
3. tunneling
4. none of the above

12. ) If four hosts on a network belong to the same group, a total of                                   sent in response to a general

query message.

1. one membership report is
2. two membership reports are
3. three membership reports are
4. none of the above

13. ) A process called                          sends a multicast packet through WANs that do not support physical

multicast addressing.

1. tunneling
2. delayed response
3. jamming
4. none of the above

14. ) A group table entry is in the                              state if there is no corresponding timer running.

1. FREE
2. DELAYING
3. IDLE
4. none of the above

15. ) A group table entry in the                             state sends a request when its timer expires.

1. FREE
2. DELAYING
3. IDLE
4. none of the above

16. ) The                       module receives an IGMP report or query.

1. input
2. output
3. group-joining
4. none of the above

17. ) The                       module sends out an IGMP report.

1. input
2. output
3. group-joining
4. none of the above

18. ) The                       module can create a new entry in the group table and start a timer.

1. input
2. output
3. group-joining
4. none of the above

19. ) The                       module can decrement the reference count in the group table.

1. input
2. output
3. group-leaving
4. none of the above

20. ) In IGMP, a membership report is sent                               .

1. once
2. twice
3. three times
4. none of the above

21. ) In IGMP, the general query message                                                                group.

1. does not define a particular
2. explicitly defines a
3. can define more than one
4. none of the above

22. ) To prevent unnecessary traffic, IGMP uses                                                    strategy.

1. a quick response
2. an all-host response
3. a delayed response
4. none of the above

23. )To prevent unnecessary traffic, IGMP designates one router as the                                            for each network.

1. query router
2. designated router
3. multicast router
4. none of the above

24. ) An IGMP packet is carried in an                                          packet.