Phone:+91-88823 09876

ignou solved assignmeng MCS-042 Data Communication and Computer Network 2015-16


Solved assignment is ready kindly make payments and get this assignments

Hand written – Rs 1200/-

Soft copy by email 700/-

Any quries kindly call me 888-2309876 or email

(a) Calculate channel capacity by applying Shannon’s theorem for the following parameters. Bandwidth (w) = 3100 Hz Signal to noise ratio (s/w) = 30 db
(5 Marks)
(b) Suppose a computer A sends a message to a computer D via LAN 1, Router 1 and LAN 2. Explain the processes involved and contents of the packets and frames at network layer and data link layer for each hop interface. Assume the logical and physical address on your own.
(5 Marks)
(a) Given a 10 bit sequence 1001001111 and a divisor of 1011, find the CRC.
(5 Marks)
(b) How does the sampling rate affect the transmitted digital signal?
(3 Marks)
(c) What is the difference between bit rate and baud rate?
(2 Marks)
(a) Explain the concept of bit stuffing. How it is different from character stuffing. If the bit string 0111101111111110111111101110 is bit staffed, what is the output string?
(4 Marks)
(b) Assume a data stream is made of 101011100. Encode this stream using the following encoding scheme:
(i) Manchester (ii) Differential Manchester Encoding (iii) R Z
(3 Marks)
(c) Construct the Hamming code for the bit sequence 10011010.
(3 Marks)
(a) What are the advantages of fragmentation of frames in IEEE802.11. Discuss.
(4 Marks)
(b) Explain stop and wait ARQ. What can be the problem with this protocol?
(3 Marks)
(c) Why is sliding window protocol useful in satellite links?
(3 Marks)
Consider the following network, with the indicated link cost. Use Dijkstra’s algorithm to find the shortest paths from source node A to all other nodes.
(10 Marks)
(a) How does BGP work? How does it solve the count to infinity problem?
(5 Marks)
(b) Explain the leaky bucket algorithm.
(5 Marks)
(a) Explain how does Nagle’s algorithm reduce the wastage of bandwidth.
(5 Marks)
(b) Explain TCP’s congestion control mechanism through an illustration.
(5 Marks)
(a) What is the utility of digital certificate? How are these digital signatures created?
(5 Marks)
(b) Explain Diffie Hellman algorithm with the help of an example.

. Assignments

Dear Student,

As per your last email you requested a solved assignment which is always available with us. We ensure you that the answer quality would be the best and you will get up to 90% to 100% marks in the assignments purchased from us. We have an expert on every subject working with us. The subject matter experts are highly qualified and deliver their best for you over and over again.

Please have a look at the price list mentioned below and send us a reply on this e-mail to let us know which assignment you want from us.


Type A- Rs._ per subject – This assignment is ready to use assignment for every student. (The content of this assignment is the same for every student. You may risk getting your marks deducted by the university due to plagiarism.)

Type B- Rs._ per subject - This assignment is personalized and customized just for you. The answers of this assignment would not be shared with any other student. The content of this assignment would be unique and we will delete it from our database after sending it to you exclusively. (This assignment would have 0% plagiarism)

Type C - Rs._ per Subject-Handwritten Assignment

If you want that your assignment should be written manually rather than being sent to you in a MS Word file or uploaded on the internet then we can do that for you. We will do your assignment manually and every answer would be created just for you. You only have to pay Rs._ per subject for handwritten assignments and we will make sure it gets to you on time every time. We can courier the assignment at your preferred address and you just have to receive it. This assignment will be delivered within a week’s time due to the fact that it needs more time to write down an answer than to type it. This assignment would also help you get around 90% to 100% marks because it would be done by our subject matter experts.


Please note that you have to pay us in advance. All payment should be made in INR. As soon as we receive your payment, we will send your Type A assignment within 10 minutes only. If you have opted for Type B, we will send the assignment within 5 hours of receiving your payment. If you have opted for Type C, we will send your assignment within 24 hours of receiving the payment. Type B and Type C assignment submission takes more time because we customize each and every word of the assignment just for you. So we request you to be patient.

Pay Online

Now you can also make the payment online by the below mentioned link. We accept payments through Credit Card, Debit Card and Net Banking too.

Click Here To Make Payment

Pay Offline

You can also pay us via NEFT / RTGS by visiting the nearest branch of your bank.

You can also deposit Cash by visiting the nearest branch of ICICI Bank.

Our process

After you have made the payment please email us your payment details with Assignment Name and Type Preference at We will revert asap.

Note: For better response time, kindly use e-mail communication and avoid calling us. Our office timings are 9 AM to 6 PM.


Year:  2015