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Assignment No. 04

Semester: Fall 2015
Data Communication-CS601


Total Marks: 15


Due Date: 4 /02/2016



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

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.



VRC parity bit
























(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

Views: 7388


Replies to This Discussion

1st m error found krna h kya????

Complete solution ...........

do mention if anyone finds an error

how to find we CRC,Quotient Ans specilly extra bits anyone explain here?

y apnyy guard bands = 3 ksy leay hn?????

orrr y formula kn say lectr m h?????

ooorrr 1st qstion m CRC , quotient ksy find kia h????

1 minimum guard bands required are 1 less than the total channels
2 formula lectures mein nahi hy mila mujhy b,online help li hy
3 long division se

long division

thanks brother you have done nice job

i check whole assignment and there is no error in this assignment

thanks again


can any one tell me???

Mohsin Bhai ye ap ne CRC kasa kia h .plz is ki jo division ap ne ki h wo dikha dn

Answer of question 1 B:

Quotient = 101101101111
CRC = 00000
No. of bits added = 9

bhai jan are u share the link 

FRIENDS humary qustion k mutabiq four (4) bandwidth k liy 3 guard aay gay according to the example. SEE this example and solve the qustion.

and gave ur coments thanks.


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