2020 - BCA [5th Semester] - Computer Network - Purnea University

PU5-BCA-01
B.C.A. (Vth Semester)
End Semester Examination, December-2020
PAPER-I
(Computer Network)
Time: 3 hrs                         Pass Marks: 31.5                 Maximum marks: 70

Note: Instructions: Answer any 5 questions in which Question 1 is compulsory. Each question carries 14 marks.
  1. OBJECTIVE. (Each contains 1 mark)                                                       
    1: Which topology has multipoint connection?
       a. Ring
       b. Bus
       c. Star
       d. Mesh
    2: Mesh topology have devices which are connected via
       a. Single and multiple links
       b. Multipoint link
       c. Point to point link
       d. None
    3: The topology that requires a central controller or hub is
       a Mesh
       b. Star
       c. Bus
       d. Ring
    4: Which is the smallest unit amongst the following with reference to the ATM
       a. Transmission path
       b. Virtual path
       c. Virtual circuit
       d. All are of same size
    5: A device that is used to connect several LANs is
       a. Router
       b. Repeater
       c. Bridge
       d. All of these
    6: An FDDI LAN can be as a medium
       a. Any metallic cable
       b. Copper cable
       c. Fiber optic cable
       d. Both option b and c
    7. Token ring and FDDI both use as an access method.
       a. CMSA
       b. CSMA/CD
       c. Token Passing
       d. HDLC
    8. An FDDI synchronous data frame means that
       a. The information is real time
       b. The information is not real time
       c. The information comes from the SDLC protocol
       d. The information is time-division multiplexed
    9: _____terminals are often connected to complex inventory and sales computer systems
       a. Sale
       b. Query
       c. Point-of-sale
       d. Data conversion
    10: When a TCP segment arrives at a host, the socket to which the segment is directed depends on
       a. The destination port number
       b. The source port number
       C. The source IP address of the datagram that encapsulated the segment
       d. All the above
    11: The slowest transmission speeds are these of
       Twisted/pair wire a.
       Coaxial cable
       C. Fiber/optics cable
       d. Microwaves
    12: Which of the following is an example of analog communication?
       a. DDS
       b. DDL
       c. DDP
       d. All the above
    13: _______is a device that allows interconnection of nodes?
       a. NIC
       b. HUB
       c. WAN
       d. Ring
    14: A collection of related files is called
       a. Data
       b. File
       c. Database
       d. None of these

  2. a. What is the difference between Star topology and Ring topology?
    b. Explain the various network topologies with diagram.

  3. a. What are the various software protocols? Explain in brief
    b. Write the steps for the selection and designing of a network for an organization.

  4. a. What is Bit synchronization? What is digital signaling? What is Analog Signaling?
    b. Explain the properties and specialties of network media types?

  5. a. What is the difference between base band and broadband transmission?
    b. Explain the above transmissions in brief.

  6. a. Explain the various layers of the OSI model.
    b. Write briefly about the working of TCP and IP. Draw a diagram to show how a message is transmitted via the TCP/IP protocol.

  7. a. What is an Ethernet? What are its principles
    b. Explain token ring working principle.

  8. a. Write briefly about data transmission protocol.
    b. What are the four protocols used in data transfer, explain?

  9. a. What are multiplexers? Explain in brief.
    b. What is ATM (Asynchronous Transfer Mode)? Why do we use ATM networks? Draw a diagram to show the ATM cell format. Explain the working of Asynchronous Transfer Mode.

  10. Write the steps for simple installation and configuration of Windows NT or any Debian based Linux Operating System.
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Related Topics: 2020 5th Semester BCA computer network Purnea University
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