Computer Networks MCQs with Answers
Practice important Computer Networks MCQs with answers and explanations.
Multiple Choice Questions
Q931: What information does the Fragment Offset field provide?
- A: Fragment size
- B: Original location of fragment
- C: Next hop address
- D: Datagram length
View Answer
B
Q932: Who performs the reassembly of IP datagram fragments?
- A: Source host
- B: Intermediate routers
- C: Ultimate destination
- D: All routers
View Answer
C
Q933: If fragments arrive out of order, how are they correctly reassembled?
- A: Using fragment size
- B: Using fragment offset
- C: Using checksum
- D: Using TTL
View Answer
B
Q934: The IDENT field in IP fragments is used to ________.
- A: Identify protocol
- B: Match fragments to original datagram
- C: Count fragments
- D: Calculate checksum
View Answer
B
Q935: What happens if a fragment is lost during transmission?
- A: The entire datagram is dropped
- B: A new datagram is created
- C: The lost fragment is ignored
- D: Only the lost fragment is retransmitted
View Answer
A
Q936: How does the destination detect a lost fragment?
- A: By sending an error message
- B: By using a timer
- C: By counting fragments
- D: By requesting retransmission
View Answer
B
Q937: If a fragment needs to be further fragmented, this process is called ________.
- A: Fragmenting a fragment
- B: Reassembly
- C: Multiplexing
- D: Sub-fragmenting
View Answer
A
Q938: Sub-fragments must include ________ to allow correct reassembly.
- A: Size only
- B: Original fragment size
- C: Position in original datagram
- D: Checksum
View Answer
C
Q939: TTL value in an IP datagram is decremented by ________.
- A: Source host
- B: Each router
- C: Each switch
- D: Destination host
View Answer
B
Q940: IP datagram fragmentation occurs when datagram size is ________ than network MTU.
- A: Less
- B: Equal
- C: Greater
- D: Zero
View Answer
C