Computer Networks MCQs with Answers
Practice important Computer Networks MCQs with answers and explanations.
Chapter: 30
Q941:
The IP protocol provides ________ delivery service.
A. Guaranteed and ordered
B. Best-effort
C. Reliable
D. Connection-oriented
Correct Answer:
B
Chapter: 30
Q942:
Which IP datagram field is NOT transmitted to the next hop but used internally by routers?
A. Source address
B. Next-hop address
C. Destination address
D. Fragment offset
Correct Answer:
B
Chapter: 30
Q943:
The HEADER CHECKSUM field is calculated using which method?
A. 2’s complement
B. 1’s complement
C. MD5 hashing
D. XOR operation
Correct Answer:
B
Chapter: 30
Q944:
What is the typical size of the IP header without options?
A. 20 octets
B. 32 octets
C. 64 octets
D. 8 octets
Correct Answer:
A
Chapter: 30
Q945:
The fragmentation FLAG bit set to 1 indicates ________.
A. More fragments follow
B. This is the last fragment
C. Fragment is lost
D. Fragment is corrupted
Correct Answer:
A
Chapter: 30
Q946:
IP datagram with no options has H.LEN field value ________.
A. 3
B. 4
C. 5
D. 6
Correct Answer:
C
Chapter: 30
Q947:
The fragment offset field in IP header indicates ________.
A. Position of fragment in original datagram
B. Size of fragment
C. Number of fragments
D. TTL
Correct Answer:
A
Chapter: 30
Q948:
Fragments arriving out of order are reassembled by ________.
A. Using IDENT and fragment offset
B. Using TTL and checksum
C. Using FLAGS only
D. Using total length
Correct Answer:
A
Chapter: 30
Q949:
If TTL in datagram reaches zero, what happens?
A. Datagram is discarded
B. Datagram is forwarded
C. Datagram is fragmented
D. Datagram is reassembled
Correct Answer:
A
Chapter: 30
Q950:
Fragments can be lost and cause the original datagram to be ________.
A. Dropped
B. Reassembled
C. Forwarded
D. Modified
Correct Answer:
A
Chapter: 30
Q951:
The IP fragmentation timer at destination detects ________.
A. Lost fragments
B. Delayed fragments
C. Corrupted fragments
D. None of the above
Correct Answer:
A
Chapter: 30
Q952:
Fragmentation is done by ________.
A. Source host
B. Router
C. Destination
D. All hosts
Correct Answer:
B
Chapter: 30
Q953:
Fragmentation allows datagram to be sent through networks with ________.
A. Smaller MTU
B. Larger MTU
C. Equal MTU
D. No MTU
Correct Answer:
A
Chapter: 30
Q954:
Fragments of different datagrams can be sorted out using ________.
A. FLAGS and IDENT
B. IDENT and fragment offset
C. TTL and checksum
D. Header length and flags
Correct Answer:
B
Chapter: 30
Q955:
Fragmenting a fragment is called ________.
A. Sub-fragmentation
B. Reassembly
C. Multiplexing
D. Encapsulation
Correct Answer:
A
Chapter: 31
Q956:
What is the version number of the new IP protocol introduced after IPv4?
A. 4
B. 5
C. 6
D. 7
Correct Answer:
C
Chapter: 31
Q957:
How many bits are used in an IPv6 address?
A. 32 bits
B. 64 bits
C. 128 bits
D. 256 bits
Correct Answer:
C
Chapter: 31
Q958:
Which organization proposed the new IP version called IPv6?
A. IEEE
B. IETF
C. ITU
D. ISO
Correct Answer:
B
Chapter: 31
Q959:
The IPv4 address space allows for over how many networks?
A. One million
B. Over a million
C. Two million
D. Fifty thousand
Correct Answer:
B
Chapter: 31
Q960:
What was the preliminary name used for IPv6 before the final version number was assigned?
A. IP Next
B. IPng
C. IPX
D. IP Next Generation
Correct Answer:
B