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SIT202 Computer Networks

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Deakin University

   

Computer Networks (SIT202)

   

Added on  2020-02-24

SIT202 Computer Networks

   

Deakin University

   

Computer Networks (SIT202)

   Added on 2020-02-24

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Running head: COMPUTER NETWORKS - PROBLEM-SOLVING REPORT 2Computer Networks - Problem-Solving Report 2Name of the StudentName of the UniversityAuthor Note
SIT202 Computer Networks_1
1 COMPUTER NETWORKS - PROBLEM-SOLVING REPORT 2Table of ContentsQuestion 2..................................................................................................................................2Part A.........................................................................................................................................2Part B..........................................................................................................................................5Question 3..................................................................................................................................5Part A.........................................................................................................................................5Part B..........................................................................................................................................6References..................................................................................................................................7
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2 COMPUTER NETWORKS - PROBLEM-SOLVING REPORT 2Question 2Part AI.Two mechanisms which can be used are:Open-loop congestion control – in the process odd open loop congestion control there area set of congestion control policies, which are used to remove congestion as soon as ithappens. The different policies which are used in the process of removal of congestionare:oRetransmission policy – it the receiver of a packet stream thinks that one of thereceived packet corrupt then the receiver may ask the sender to resend the samepacket again. This can cause congestion in the packet stream (Silva et al. 2015).To avoid congestion a good transmission policy has to be applied to the networkline, which will be responsible for the removal of congestion in the transmissionline. oAcknowledgement policy – sending of an acknowledgement back to the sendercan cause congestion due to the traffic used by the acknowledgement send. Itwould be better to share only selective acknowledgement packets or to send aftera timer has expired (Forouzan and Hill 2006). Closed-loop congestion control – for closed loop congestion control the routers can useany of the following protocols to reduce the congestion in the transmission line:oBackpressure of data stream can be used only in a virtual network. The receiverstops accepting the packets and the packets are stuck in the stream (Zeeshan, Khanand Jan 2016). This causes the sender to stop sending nay more packets and thecongestion breaks down after some time.
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