91. CD-ROM is a
(1) Semiconductor memory
(2) None of these
(3) Magnetic memory
(4) All of the above
(5) Memory register
92. Actual execution of instructions in a computer takes place in ,
(1) Control Unit
(2) ALU
(3) Storage unit
(4) All of the above
(5) None of these
93. Which of the following is used as a primary storage device
(1) Magnetic tape
(2) PROM
(3) Floppy disk
(4) None of these
(5) All of the above
94. Information retrieval is faster from
(1) Floppy disk
(2) Hard disk
(3) Magnetic tape
(4) All of the above
(5) None of these
95. Operating system is
(1) A collection of software routines
(2) A collection of input-output devices
(3) A collection of hardware components
(4) All of the above
(5) None of these
96. Operating system
(1) Provides a layered, user-friendly interface .
(2) Link a program with the subroutines it references
(3) Enables a programmer to draw a flowchart
(4) All of the above
(5) None of these
97. Execution of two or more programs by a single CPU is known as:
(1) Multiprocessing
(2) Time sharing
(3) Multiprogramming
(4) None of these
(5) All of these
98. Modem stands for
(1) A type of secondary memory
(2) Mainframe operating device memory
(3) Modulator demodulator
(4) All of the above
(5) None of these
99. Typical data transfer rate in LAN are of the order of
(1) Kilo bits per sec
(2) Bits per sec
(3) Mega bits per sec
(4) All of the above
(5) None of these
100. Ethernet uses
(1) Ring topology
(2) Bus topology
(3) Mesh topology
(4) All of the above
(5) None of these
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