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# CS601 Data Communication Assignment # 04 Due Date: 4 Feb-2016

Assignment No. 04

Semester: Fall 2015
Data Communication-CS601

Total Marks: 15

Due Date: 4 /02/2016

Instructions:

Please read the following instructions carefully before submitting the assignment:

• You will submit your assignment before or on due date on VU-LMS.
• Assignment sent via Email will not be replied and accepted/graded in any case.
• If the submitted assignment does not open or file is corrupt, it will not be graded.
• Assignment should be completed by your own efforts it should not be copied from internet, handouts or books.
• You will submit solution only in the Microsoft Word File.
• Assignment is covered from lectures 29 to 34.

For any query about the assignment, contact at cs601@vu.edu.pk

Assignment Questions

Questions:                                                                                                                                Marks 15

Question. 1                                                                                                                             (5 Marks)

(A) Consider a sender wants to send a message “FRAME”, you are required to fill the empty column by using VRC even parity technique against given ASCII codes in following table.

 Character ASCII CODES VRC parity bit F 01000110 R 01010010 A 01000001 M 01001101 E 01000101

(B)  Calculate CRC,Quotient and No of Extra bits which will be added by using Module-2 Division Where  Divisor=110011 , Message= 11100011                                    (5 Marks)

Question. 2                                                                                                                          (5 Marks)

Four channels, each with a 50-kHz bandwidth, are to be multiplexed together. What is the

minimum bandwidth of the link if there is a need for a guard band of 20 kHz between the

channels to prevent interference?

Best of Luck

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### Replies to This Discussion

ti mohsin ali n thk solve kia h dear.....

yup lag tu rha ha ji :) :p

AP B THORA SA mind lga liya karo samiya javaid

m bna chukiii hu huhhhh

demagh lga k eeee

TU apni asssinmt dikho gi? kis trha bnai ha ap nay. :p :p

Our main purpose here discussion not just Solution

We are here with you hands in hands to facilitate your learning and do not appreciate the idea of copying or replicating solutions.

CRC=11010

Quotient=10110110

No. of extra bits=5

Qno2 Ans

Total Channels=4 Total Frequency of one channel =50 KHz Total Guard Bands=3 Guard Band Frequecny =20 KHZ

Banwidth= Freq. of one channel *total channel + Guard band freq *Total guard bands Bandwith=50*4+20*3 Bandwidth=260KHZ

Question no 1(B)

check it out either it is OK or not..

u right dur e snawar

guize check lecture 33 for solve question no 1

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