HNBGU BCA Third Semester Previous Year 2017-18 Question Papers

HNBGU BCA Third Semester Previous Year 2017-18 Question Papers

Computer Networks


NOTE: Attempt any five question. Each question carries 5 marks
  1. What is topology? Differentiate between any two on the basis of various parameters.

  2. Differentiate between OSI model and TCP/IP model.

  3. Explain IP4 diagram.

  4. A noiseless 4KHz channel is sampled every 1m/sec. What is maximum data rate?

  5. Data link protocols almost always put the CRC in trailer rather in header. Why?

  6. Sketch the Manchester encoding for the bit stream 0001110101

  7. If the TCP round trip time, RTT, is currently 30m/sec and the following acknowledgement come in after 26, 32 and 24m/sec, respectively. What is new RTT estimate? Use =0.9
NOTE: Attempt any three question. Each question carries 15 marks
  1. (a) Write short notes on the following
    (i) Twisted pair cable
    (ii) Coaxial cable

    (b) What do you understand by transmission impairment? Explain three major problems.

  2. (a) Write short notes on the following:
    (i) PCM
    (ii) QAM

    (b) Differentiate between circuit switching, packet switching and message switching.

  3. (a) What do you understand by bit stuffing? Explain its algorithm. If the bit string 0111101111101111110 is bit stuffed, what is the output string?

    (b) Explain layers of X.25

  4. (a) Consider the following sequences of frame transmission from sender to receiver:
    (i) Frame 0, frame 1 is sent; both acknowledged
    (ii) Frame 2, frame 3, frame 4 sent, frame 2 acknowledged NAK 3 sent to sender.
    (iii) Frame 5, frame6, frame 7 are sent.
    Designed this transmission using Go Back nARQ.
    Will Frame 5,6 and 7 be accepted by receiver

    (b) write short notes on the following:
    (i) FDDI
    (ii)Fast Ethernet

  5. (a) Define Routing. Which later is responsible for this task? Explain the Hierarchical Routing

    (b) What do you understand by congestion? Explain various congestion control policies.

  6. (a) Explain TCP connection management.

    (b) Write short notes on the following.
    (i) FTP
    (II) SMTP

System analysis and design


NOTE: Attempt any five question. Each question carries 5 marks
  1. What is the role of documentation in a system?

  2. Explain any two methods of face gathering.

  3. What do you mean by system? Explain open systems and closed systems.

  4. What are the basis principle of a successful system?

  5. Describe the different steps in system design

  6. Define the importance of system requirement analysis.

  7. Explain the objectives in designing an Information System.
NOTE: Attempt any three question. Each question carries 15 marks
  1. Explain the different phases of a System Development Life Cycle With a neat diagram.

  2. Clarify the objectives of MIS. Discuss its significance its management.

  3. Prepare a Data Flow Diagram for a college Information System. Explain in detail about it.

  4. Discuss the process of input output and form design of a system.

  5. What are system requirements? How would an analysis determine the user’s need for a system? Explain

  6. Write short notes on any four of the following:
    • DSS
    • System planning
    • Technical feasibility
    • Structured English
    • Decision trees

HTML programming


NOTE: Attempt any five question. Each question carries 5 marks
  1. What is World Wide Web?

  2. What is a browser? Explain the use of JVM in a browser.

  3. Explain the ordered and unordered lists in HTML

  4. Explain the use of HTTP protocol to process web pages.

  5. What are cookies? Explain their usage.

  6. What is Uniform Resource locator (URL)?

  7. Explain the client –server model of networking.
NOTE: Attempt any three question. Each question carries 15 marks
  1. Write a brief note on any five HTML tags.

  2. Explain HTML tables illustrating the rowspan and colspan elements.

  3. What are HTML frames? Write a code to make a commonly required frame layout

  4. Explain the HTML forms implementation with example to get the student details

  5. What is Cascade Style Sheet? Define a sample CSS code for a group of web pages.

  6. What are the different ways to apply CSS to HTML? Give some example.

  7. Explain the tags used for marque image insertion in a web page.

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