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
Practice Exam Test Questions
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
Answer: Option B
Solution:
2. IGMP is _______ protocol.
A) an error reporting
B) a group management
C) a transmission
D) none of the above
Answer: Option B
Solution:
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
Answer: Option A
Solution:
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
Answer: Option A
Solution:
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
Answer: Option B
Solution:
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
Answer: Option B
Solution:
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
Answer: Option B
Solution:
8. An IGMP packet is carried in an __________ packet.
A) UDP
B) IP
C) Ethernet frame
D) none of the above
Answer: Option B
Solution:
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
Answer: Option C
Solution:
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
Answer: Option A
Solution:
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
Answer: Option B
Solution:
12. An ARP request is normally _______.
A) broadcast
B) multicast
C) unicast
D) none of the above
Answer: Option A
Solution:
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
Answer: Option B
Solution:
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
Answer: Option C
Solution:
15. A technique called ______ is used to create a subnetting effect.
A) ARP
B) RARP
C) proxy ARP
D) none of the above
Answer: Option C
Solution:
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
Answer: Option A
Solution:
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
Answer: Option B
Solution:
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
Answer: Option A
Solution:
19. IGMP operates __________.
A) locally
B) globally
C) both a and b
D) none of the above
Answer: Option A
Solution:
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
Answer: Option C
Solution:
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
Answer: Option A
Solution:
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
Answer: Option A
Solution:
23. IGMP is a companion to the ______ protocol.
A) UDP
B) TCP
C) ICM
D) none of the above
Answer: Option D
Solution:
24. ICMP is a _________ layer protocol.
A) data link
B) transport
C) network
D) none of the above
Answer: Option C
Solution:
25. An ARP reply is normally _______.
A) broadcast
B) multicast
C) unicast
D) none of the above
Answer: Option C
Solution:
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
Answer: Option A
Solution:
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
Answer: Option A
Solution:
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
Answer: Option A
Solution:
29. The logical addresses in the Internet are called _______ addresses.
A) port
B) IP
C) Email
D) none of the above
Answer: Option B
Solution:
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
Answer: Option D
Solution:
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
Answer: Option C
Solution:
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
Answer: Option C
Solution:
33. A _______ address is an internetwork address with universal jurisdiction.
A) physical
B) logical
C) a and b
D) none of the above
Answer: Option B
Solution:
34. In IGMP, a membership report is sent _______.
A) once
B) twice
C) three times
D) none of the above
Answer: Option B
Solution:
Complete List of Chapter Quiz in Data Communications and Networking
Check your work.
Download File in PDF (Premium Users)
MCQ in Network Layer - Address Mapping, Error Reporting, and Multicasting (pdf)
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