Question

Network architecture:

Which of the following applications require best-effort , guaranteed , or predictable service, Give reasons for your choices.

a. High-quality (phone company-grade) voice calls

b. Voice over IP (VoIP)

c. File transfers via FTP

d. Audio file downloads

e. A commercial video-on-demand service

f. User access to servers in a corporation

Answer 1

HIGH QUALITY (PHONE COMPANY GRADE) VOICE CALLS:

It is a guaranteed service. It is required due to reduce the call drop rate in order to retain the identity and the legibility of the calling party.

VoIP(VOICE OVER IP):

It is predictable service- Given the client desires and the idea of open IP arranges, the VoIP association should be unsurprising, yet does not require the end to end certification of a normal telephone call.

FILE TRANSFERS VIA FTP:

It is best effort. It is sufficient to give the association among client and source with TCP.

AUDIO FILE DOWNLOAD:

It is best effort. It is like FTP. It is a non constant application that can make utilization of TCP to guarantee conveyance over a variable time.

COMMERCIAL VIDEO ON DEMAND SERVICE

Guaranteed service. The video information system keeps up a settled misfortune and jitter resilience over a heterogeneous system to maintain a strategic distance from loss of video flag or inadmissible picture quality.

USER ACCESS TO SERVERS

Best effort .This application can be sophisticated concluded a best exertion benefit that best suits the variable transfer speed and client request for the information interface.