The Gateway to Computer Science Excellence
First time here? Checkout the FAQ!
x
0 votes
64 views
Which of the following statements about datagrams sent by a node in a network using $IPv4$ protocol is (are) TRUE?

I. Datagrams at the source must be the size of the smallest maximum transmission unit (MTU) of all the links on a path to the destination.
II. Datagrams may be fragmented during routing.
III. Datagrams are reassembled only at the destination.

  1. II only
  2. III only
  3. I and III
  4. II and III
asked in Computer Networks by Boss (17.2k points) | 64 views

1 Answer

+1 vote
I. Datagrams at the source must be the size of the smallest maximum transmission unit (MTU) of all the links on a path to the destination. $\rightarrow$ False.

This process is called Path MTU Detection Algorithm(PMTUD Algorithm) which is not available in IPv4. But PMTUD algorithm is run by every source host in IPv6 before sending data, to avoid the overhead of fragmentation at the intermediate routers.

II. Datagrams may be fragmented during routing. $\rightarrow$ True.

III. Datagrams are reassembled only at the destination. $\rightarrow$ True.
answered by Boss (19.2k points)
Answer:

Related questions

Quick search syntax
tags tag:apple
author user:martin
title title:apple
content content:apple
exclude -tag:apple
force match +apple
views views:100
score score:10
answers answers:2
is accepted isaccepted:true
is closed isclosed:true
50,069 questions
53,206 answers
184,550 comments
70,420 users