This is the MCQs in Network Layer: Address Mapping, Error Reporting, and Multicasting from book the Data Communications and Networking 4th Edition by Behrouz A. Forouzan. If you are looking for a reviewer in Electronics Systems and Technologies (Communications Engineering) this will definitely help you before taking the Board Exam.
Topic Outline
- ADDRESS MAPPING
- Mapping Logical to Physical Address: ARP
- Mapping Physical to Logical Address: RARp, BOOTP, and DHCP
- ICMP
- Types of Messages
- Message Format
- Error Reporting
- Query
- Debugging Tools
- IGMP
- Group Management
- IGMP Messages
- Message Format
- IGMP Operation
- Encapsulation
- Netstat Utility
- ICMPv6
- Error Reporting
- Query
Begin and Good luck!
Choose the letter of the best answer in each questions.
1. The IP packet that carries an IGMP packet has a value of _______ in its protocol field.
- A) 3
- B) 2
- C) 1
- D) none of the above
2. IGMP is _______ protocol.
- A) an error reporting
- B) a group management
- C) a transmission
- D) none of the above
3. If the sender is a host and wants to send a packet to another host on the same network, the logical address that must be mapped to a physical address is ______.
- A) the destination IP address in the datagram header
- B) the IP address of the router found in the routing table
- C) either a or b
- D) none of the above
4. The target hardware address on an Ethernet is _______ in an ARP request.
- A) 0x000000000000
- B) 0.0.0.0
- C) variable
- D) class dependent
5. If four hosts on a network belong to the same group, a total of _______ sent in response to a general query message.
- A) one membership report is
- B) two membership reports are
- C) three membership reports are
- D) none of the above
6. The _______ is used by a router in response to a received leave report.
- A) general query message
- B) special query message
- C) membership report
- D) none of the above
7. Which of the following is true about ICMP messages?
- A) An ICMP error message may be generated for an ICMP error message.
- B) An ICMP error message may be generated only for the first fragment.
- C) An ICMP error message may be generated for a multicast datagram.
- D) none is true
8. An IGMP packet is carried in an __________ packet.
- A) UDP
- B) IP
- C) Ethernet frame
- D) none of the above
9. An IGMP query is sent from a _______ to a _______.
- A) host; host
- B) host; router
- C) router; host or router
- D) none of the above
10. In _______, a table associating a logical address with a physical address is updated manually.
- A) static mapping
- B) dynamic mapping
- C) physical mapping
- D) none of the above
11. A multicast message is sent from _______ to _______.
- A) one source; one destination
- B) one source; multiple destinations
- C) multiple sources; one destination
- D) none of the above
12. An ARP request is normally _______.
- A) broadcast
- B) multicast
- C) unicast
- D) none of the above
13. If the sender is a host and wants to send a packet to another host on another network, the logical address that must be mapped to a physical address is ______.
- A) the destination IP address in the datagram header
- B) the IP address of the router found in the routing table
- C) either a or b
- D) none of the above
14. The _______ field of the IGMP message is all zeros in a query message.
- A) version
- B) type
- C) group address
- D) none of the above
15. A technique called ______ is used to create a subnetting effect.
- A) ARP
- B) RARP
- C) proxy ARP
- D) none of the above
16. A ________ is a local address. Its jurisdiction is over a local network.
- A) physical
- B) logical
- C) a and b
- D) none of the above
17. The sender is a router that has received a datagram destined for a host on another network. The logical address that must be mapped to a physical address is ______.
- A) the destination IP address in the datagram header
- B) the IP address of the router found in the routing table
- C) either a or b
- D) none of the above
18. The sender is a router that has received a datagram destined for a host on the same network. The logical address that must be mapped to a physical address is ______.
- A) the destination IP address in the datagram header
- B) the IP address of the router found in the routing table
- C) either a or b
- D) none of the above
19. IGMP operates __________.
- A) locally
- B) globally
- C) both a and b
- D) none of the above
- 20. IGMP helps a ________ router create and update a list of loyal members related to each router interface.
- A) broadcast
- B) unicast
- C) multicast
- D) none of the above
21. In IGMP, the general query message ___________________ group.
- A) does not define a particular
- B) explicitly defines a
- C) can define more than one
- D) none of the above
22. A _______ is an ARP that acts on behalf of a set of hosts.
- A) ARP
- B) RARP
- C) proxy ARP
- D) none of the above
23. IGMP is a companion to the ______ protocol.
- A) UDP
- B) TCP
- C) ICM
- D) none of the above
24. ICMP is a _________ layer protocol.
- A) data link
- B) transport
- C) network
- D) none of the above
25. An ARP reply is normally _______.
- A) broadcast
- B) multicast
- C) unicast
- D) none of the above
26. _______ is a dynamic mapping protocol in which a physical address is found for a given logical address.
- A) ARP
- B) RARP
- C) both a and b
- D) none of the above
27. ICMP messages are divided into two broad categories: _____________.
- A) query and error reporting messages
- B) request and response messages
- C) request and reply messages
- D) none of the above
28. An ICMP message has _____ header and a variable-size data section.
- A) a 16-byte
- B) a 32-byte
- C) an 8-byte
- D) none of the above
29. The logical addresses in the Internet are called _______ addresses.
- A) port
- B) IP
- C) Email
- D) none of the above
30. Which of the following is true about ICMP messages?
- A) An ICMP error message may be generated for an ICMP error message.
- B) An ICMP error message may be generated for each fragment.
- C) An ICMP error message may be generated for a multicast datagram.
- D) none is true
31. In networks that do not support physical multicast addressing, multicasting can be accomplished through _______.
- A) mapping
- B) queries
- C) tunneling
- D) none of the above
32. The least significant 23 bits in a 48-bit Ethernet address identify a ________.
- A) multicast router
- B) host
- C) multicast group
- D) none of the above
33. A _______ address is an internetwork address with universal jurisdiction.
- A) physical
- B) logical
- C) a and b
- D) none of the above
34. In IGMP, a membership report is sent _______.
- A) once
- B) twice
- C) three times
- D) none of the above
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