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VU Assignment No. 01 Semester: Spring 2013 Computer Networks- CS610, Solution by VU Tutors

VU Assignment No. 01 Semester: Spring 2013 Computer Networks- CS610, Solution By VU Tutors

Assignment No. 01
Semester: Spring 2013
Computer Networks- CS610
Total Marks: 20
Due Date: 29/04/2013
Uploading instructions:
Please view the Assignment Submission Process document provided to you by the Virtual University for
uploading assignments.
• Your assignment must be in .doc or .docx format. (Any other formats like scan images, PDF, Zip, rar,
bmp etc will not be accepted)
• No assignment will be accepted through email.
Rules for Marking:
It should be clear that your assignment will not get any credit if:
• The assignment is submitted after due date.
• The submitted assignment does not open or file is corrupted.
• Your assignment is copied from internet, handouts or from any other student
(Strict disciplinary action will be taken in this case).
Assignment
Question No. 1 [10 Marks]
Given are the 5 data units of 7 bits each, you have to find the value of parity bit (Both odd and even) for
each data unit:
Data Unit Even Parity bit Odd Parity bit
1001011
1010111
1100100
1011100
1111011
Solution:-
Data Unit Even Parity bit Odd Parity bit
1001011 0 1
1010111 1 0
1100100 1 0
1011100 0 1
1111011 0 1
Question No. 2 [10 Marks]
Let us consider a point to point network having 9 computers. Answer the following questions with
complete calculations.
a) How many connections/links will be needed in order to connect these computers with each other in
this point to point network?
b) How many new connections/links will be needed in order to add a new machine in this network?
Solution:-
a) We will use the following formula for ‘n’ computers, connections = (n^2 – n)/2.
(92-9)/2=36, so 36 connections will be needed.
b) n-1 new connections will be needed to add a new machine in this network.
After adding 1 new machine in this network, n becomes 10.
10-1=9, so 9 new connections will be required in this case.

VU Assignment No. 01 Semester: Spring 2013 Computer Networks- CS610, Solution By VU Tutors

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