This is the MCQs in Network Layer: Internet Protocol 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
- Internetworking
- Need for Network Layer
- Internet as a Datagram Network
- Internet as a Connectionless Network
- IPv4
- Datagram
- Fragmentation
- Checksum
- IPv6
- Advantages
- Packet Format
- Extension Headers
- TRANSITION FROM IPv4 TO IPv6
- Dual Stack
- Tunneling
- Header Translation
Begin and Good luck!
Choose the letter of the best answer in each questions.
1. In IPv6, the _______ field in the base header restricts the lifetime of a datagram.
- A) version
- B) next-header
- C) hop limit
- D) neighbor-advertisement
2. In IPv4 header, an HLEN value of decimal 10 means _______.
- A) there are 10 bytes of options
- B) there are 40 bytes of options
- C) there are 10 bytes in the header
- D) there are 40 bytes in the header
3. In IPv4, an HLEN value of decimal 10 means _______.
- A) there are 10 bytes of options
- B) there are 40 bytes of options
- C) there are 40 bytes in the header
- D) none of the above
4. In IPv6, the _______ field in the base header and the sender IP address combine to indicate a unique path identifier for a specific flow of data.
- A) flow label
- B) next header
- C) hop limit
- D) destination IP address
5. In IPv4, what is the value of the total length field in bytes if the header is 28 bytes and the data field is 400 bytes?
- A) 428
- B) 407
- C) 107
- D) 427
6. The term ________ means that IP provides no error checking or tracking. IP assumes the unreliability of the underlying layers and does its best to get a transmission through to its destination, but with no guarantees.
- A) reliable delivery
- B) connection-oriented delivery
- C) best-effort delivery
- D) none of the above
7. The ________ protocol is the transmission mechanism used by the TCP/IP suite.
- A) ARP
- B) IP
- C) RARP
- D) none of the above
8. In IPv4, what is the length of the data field given an HLEN value of 12 and total length value of 40,000?
- A) 39,988
- B) 40,012
- C) 40,048
- D) 39,952
9. In IPv4, what is needed to determine the number of the last byte of a fragment?
- A) Identification number
- B) Offset number
- C) Total length
- D) (b) and (c)
10. The IPv4 header size _______.
- A) is 20 to 60 bytes long
- B) is 20 bytes long
- C) is 60 bytes long
- D) none of the above
11. In IPv6, when a datagram needs to be discarded in a congested network, the decision is based on the _______ field in the base header.
- A) hop limit
- B) priority
- C) next header
- D) none of the above
12. In IPv4, which field or bit value unambiguously identifies the datagram as a fragment?
- A) Do not fragment bit ? 0
- B) More Fragment bit ? 0
- C) Fragment offset = 1000
- D) none of the above
13. Which of the following is a necessary part of the IPv6 datagram?
- A) Base header
- B) Extension header
- C) Data packet from the upper layer
- D) (a) and (c)
14. In IPv4, when a datagram is encapsulated in a frame, the total size of the datagram must be less than the _______.
- A) MUT
- B) MAT
- C) MTU
- D) none of the above
15. In IPv6, options are inserted between the _________ and the ___________ data.
- A) base header; extension header
- B) base header; upper-layer data
- C) base header; frame header
- D) none of the above
16. An IPv4 datagram is fragmented into three smaller datagrams. Which of the following is true?
- A) The do not fragment bit is set to 1 for all three datagrams.
- B) The more fragment bit is set to 0 for all three datagrams.
- C) The identification field is the same for all three datagrams.
- D) The offset field is the same for all three datagrams.
17. In IPv4, if the fragment offset has a value of 100, it means that _______.
- A) the datagram has not been fragmented
- B) the datagram is 100 bytes in size
- C) the first byte of the datagram is byte 100
- D) the first byte of the datagram is byte 800
18. IP is _________ datagram protocol.
- A) an unreliable
- B) a connectionless
- C) both a and b
- D) none of the above
19. IPv6 allows _________ security provisions than IPv4.
- A) more
- B) less
- C) the same level
- D) none of the above
20. The IPv4 header field formerly known as the service type field is now called the _______ field.
- A) IETF
- B) checksum
- C) differentiated services
- D) none of the above
21. A best-effort delivery service such as IPv4 includes _______.
- A) error checking
- B) error correction
- C) datagram acknowledgment
- D) none of the above
22. The IPv4 header size _______.
- A) is 20 to 60 bytes long
- B) is 20 bytes long
- C) is 60 bytes long
- D) none of the above
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