COMPUTER (I.T.) QUIZ

1.    Which of the following networks have a single communications channel shared by all the machines on the network?

      I. Broadcast networks.
II. Point-to-Point networks.
III. Telecommunication networks.
[A]Only (I) above
[B]Only (II) above
[C]Only (III) above
[D]Both (I) and (II) above

2.    Which of the following will not come under the category of telecommunication media?
[A]Twisted-pair wire
[B]Coaxial cable
[C]Fiber optics
[D]Multiplexers

3.    In a Database Management System, the physical level is
[A]The highest level of abstraction that describes how the data is actually stored
[B]Used to describe the customer data as a block of consecutive storage locations
[C]Used to describe each record by a type definition and the interrelationship among the records
[D]Users can see a set of application programs that hide details of the data types

4.    In UNIX, bootstrap is
[A]The software essential for starting the system
[B]The command used for starting the system
[C]The command used for allocating memory to different tasks
[D]A system file used to store the current users

5.    Which of the following networks is also called ‘peer network’?
[A]Ring network
[B]Bus network
[C]Star network
[D]Local area network

6.    Which of the following commands in Novell Netware Operating System permanently removes files thathave been marked for deletion?
[A]PURGE
[B]REMOVE
[C]SALVAGE
[D]REVOKE

7.    ATM breaks voice, video and data into fixed cells of 53 bytes. What is the size of data, control information in each cell?
[A]48 bytes, 5 bytes
[B]49 bytes, 4 bytes
[C]50 bytes, 3 bytes
[D]47 bytes, 6 bytes

8.    Which of the following is false about network architecture?
I. Data is directly transferred from layer n on one computer to layer n on another computer.
II. At source machine each layer passes data and control information to the layer below it.
III. At destination machine each layer passes data and control information to the layer above it.
[A]Only (I) above
[B]Only (II) above
[C]Both (II) and (III) above
[D]Both (I) and (III) above

9.    In computer networks, if the data travels in either of the direction but not simultaneously, then such type of communication is called
[A]Simplex communication
[B]Half-duplex communication
[C]Full-duplex communication
[D]Half-simplex communication

10.  In OSI Reference Model, which layer is responsible for setting up a logical path between the source and the destination computers of the network?
[A]The data link layer
[B]The network layer
[C]The transport layer
[D]The session layer

Answers:

1	A	6	A
2	D	7	A
3	B	8	A
4	A	9	B
5	A	10	B