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Assignment no. 02 of Computer Networks (CS610) has been uploaded on LMS Due date to upload the solution is 11-July-2016.


Computer Networks (CS610)


Total marks = 20

                                                                                       Deadline Date =11 July 2016


Please carefully read the following instructions before attempting the assignment.

Assignment Guidelines:

It should be clear that your assignment would not get any credit if:

  • The assignment is submitted after due date.
  • The submitted assignment does not open or file is corrupt.
  • The assignment is copied. Note that strict action would be taken if the submitted assignment is copied from any other student. Both students will be punished severely.


1)      You should consult recommended books to clarify your concepts as handouts are not sufficient.

2)      You are supposed to submit your assignment in .doc or docx format. Any other formats like scan images, PDF, Zip, rar, bmp etc will not be accepted.

3)      You are advised to upload your assignment at least two days before due date.

Important Note:

Assignment comprises of 20 Marks. Note that no assignment will be accepted after due date via email in any case (whether it is the case of load shedding or emergency electric failure or internet malfunctioning etc.). Hence, refrain from uploading assignment in the last hour of the deadline, and try to upload Solutions at least 02 days before the deadline to avoid inconvenience later on.

For any query please contact:


The objective of this assignment is:

  • To understand Addressing scheme in the context of WAN







 Suppose we proposed a new protocol called EP (Emerging Protocol), just like an IP.  The protocol has the following attributes.

  1. As contrast to IP address which has 4 classes it has only one class (the total number of hosts that this address can support is 65536)
  2. It will have source and destination address
  3. This protocol will support quality of service. It will support 16 types of classes. The field is called ToS.
  4. It will have an option for future. 8 bits will be reserved for future use. The name of the field is FU.
  5. It also has a version field of 4 bits.

Keeping in view the header of the IP address, you have to design the header for EP protocol that having the above given requirements.

Version (i.e. 4 bits)



Source Address

Destination address


You have to mention the size of each of the field in the above header. For example the size of version field in mentioned in the header.


Note: Calculate the size of Address (Source, Destination) and ToS in bits.





Good Luck


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Replies to This Discussion

Please Discuss here about this assignment.Thanks

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.

Dear Students,

Please discuss this assignment. 

Version (i.e. 4 bits)

FU=( 8bit)

ToS=(4 bit)

Source Address=(16bit)

Destination address=(16 bit)

Total Header size is= 48 bit

You all are requested to think about it how is this scheme works? If got no answer let me know I will explain it to you in detail.

ToS 4 bit kasay aya hay can u explain 

  • Type of Service (ToS)—The 8-bit ToS uses 3 bits for IP Precedence, 4 bits for ToS with the last bit not being used. The 4-bit ToS field, although defined, has never been used.

according to statement
3. This protocol will support quality of service. It will support 16 types of classes. The field is called ToS.

We need 4 bits to represent 16 different entities so we can differentiate b/w classes .

there are two statements 

As contrast to IP address which has 4 classes it has only one class


This protocol will support quality of service. It will support 16 types of classes 

u r saying we need 4 bits to represent 16 different entities??????????

I'm confuse about this 

Dear Agr yeh solution thik hay bata do warna koi sahi wala solution post karde ap dua Thanks :( :(

Dear Students Don’t wait for solution post your problems here and discuss ... after discussion a perfect solution will come in a result. So, Start it now, replies here give your comments according to your knowledge and understandings....

Dear Students,

Please discuss this assignmen

Version (i.e. 4 bits) Given 

FU=( 8bit) mentioned clearly that 8 bits reserved for future use. 

ToS=(4 bit)

Because minimum 4 bit required to represent 16 different numbers from 0 to 15. class 0 = 0000 and class 10=1010 and class 14= 1110 . In this way we need 4 bits to represent 16 different classes. 

Source Address=(16bit) As mentioned total number of hosts will be the 65536 so we need 16 bits to represent 65536 different source addresses. 

Destination address=(16 bit) The destination address will also be equal to source address so it will also consist of 16 bit to represent 65536 different users of network. 

There is not clear statements do we need to discuss in greater detail if any thing missed by me mistakenly. 

bRo am waiting ur


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