Computer Network Mcqs

Page No. 35

______ provides authentication at the IP level.


a AH


bESP


cPGP


dSSL


View Answer AH

Which two types of encryption protocols can be used to secure the authentication of computers using IPsec?


aKerberos V5


bSha


cMD5


dBoth SHA and MD5


View Answer Both SHA and MD5

Which mode of IPsec should you use to assure the security and confidentiality of data within the same LAN?


a AH transport mode


bESP transport mode


cESP tunnel mode


d AH tunnel mode


View Answer ESP transport mode

In the congestion avoidance algorithm, the size of the congestion window increases ____________ until congestion is detected.


aexponentially


badditively


cmultiplicatively


dsuddenly


View Answer additively

In the slow-start algorithm, the size of the congestion window increases __________ until it reaches a threshold.


aexponentially


badditively


cmultiplicatively


dsuddenly


View Answer exponentially

The packet sent by a node to the source to inform it of congestion is called _______


aExplicit


bDiscard


cChoke


dBackpressure


View Answer Choke

Backpressure technique can be applied only to _______


aCongestion networks


bClosed circuit networks


cOpen circuit networks


dVirtual circuit networks



The technique in which a congested node stops receiving data from the immediate upstream node or nodes is called as _______


aAdmission policy


bBackpressure


cForward signaling


dBackward signaling


View Answer Backpressure

Closed-Loop control mechanisms try to _________


aRemove after congestion occurs


b Remove after sometime


c Prevent before congestion occurs


d Prevent before sending packets



Discarding policy is mainly done by _______


aSender


bReceiver


cRouter


dSwitch


View Answer Router

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