IMG_20171024_131720.jpg - END TERM EXAMINATION Exam Roll No votes Paper Code MCA 207 THIRD SEMESTER[MCA DECEMBER 2015 Time 3 Hours Subject Data

IMG_20171024_131720.jpg - END TERM EXAMINATION Exam Roll No...

This preview shows page 1 out of 1 page.

Image of page 1

You've reached the end of your free preview.

Want to read the whole page?

Unformatted text preview: END TERM EXAMINATION Exam Roll No, votes Paper Code: MCA 207 THIRD SEMESTER [MCA] DECEMBER 2015 Time : 3 Hours Subject, Data Communication & Networking Maximum Marks 160 Note: Attempt any five questions including O. No. 1 which is compulsory. Select one question from each unit. QI Answer the following briefly: Differentiate between a low pass filter and a band pass filter. (2x10 20) Explain different modes of transmission in an optical fiber. Define QAM and draw the constellation diagram for 320AM. Why do we need flow control? Differentiate between ALOHA and Slotted ALOHA, What is the channel allocation problem? What is classful addressing? What is the utility of NAT? Describe a 3- way handshake. What is public key encryption? Unit-I Q2. a) Explain multiplexing and its types with focus on its application in the Mobile telephone system. (7) b) Differentiate between OSI and TCP/IP reference models in terms of architecture, (3) Q3. a) Describe different types of communication satellites. (6) b) Encode the following bits into a digital signal using bipolar AMI and HDB3 encoding schemes: 1100100001 101. (4) Unit-II Q4. a) What is a two dimensional parity check? Calculate the redundancy bits for the following data using the Hamming code: 1100101011. (7) b) Differentiate between Selective repeat and Go back N sliding window protocol. (3) Q5. a) How are collisions avoided in a wireless network? (6) b) Describe a collision free protocol. (2) c) Draw the structure of an Ethernet frame. (2) Unit-III (6. a) Explain the IPV4 with the help of a datagram format. (4) bj Explain different types of ICMP messages. (6 ) P.T.O. MCA - 207...
View Full Document

  • Spring '15

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask You can ask ( soon) You can ask (will expire )
Answers in as fast as 15 minutes