TRANSPORT LAYER
INTRODUCTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
premature time out resulting in unnecessary packet retransmissions
|
|
|
premature time out means packet loss does not need to be addressed
|
|
|
premature time out means the timeout value needs to be reduced for the network
|
|
|
premature time out means sending host sits idle
|
Detailed explanation-1: -Too short: If the timeout period is too short, then the retransmissions will be wasted. Too long: If the timeout period is too long, then there will be an excessive delay when the packet is lost.
Detailed explanation-2: -If the interval is set too short, timeouts will occur unnecessarily; if too long there will be additional delay every time a packet is lost. In fact the timeout value for the retransmission timer is adjusted dynamically.
Detailed explanation-3: -If the timeout is too long the transmitter will have finished transmitting before the receipt arrives, causing pauses. If the timeout is too short then some packets will be retransmitted.
Detailed explanation-4: -By default, after the retransmission timer hits 240 seconds, it uses that value for retransmission of any segment that has to be retransmitted. This can cause long delays for a client to time-out on a slow link.