The Global Open University 2012-1st Year M.C.A Global open University of IT Tools and Applications - Question Paper

the output is 0 if and only if at lowest
one input is one ?
a. NOT
b. AND
c. NOR
d. NAND
48 ) The NAND can functio as a NOT
gate of two-input NAND gates used to
perform the function of two- input OR
gate ?
a. One
b. Two
c. Three
d. Four
49 ) The NAND can function as a NOT
gate if
a. inputs are connected together
b. inputs are open
c. 1 input is set to 0
d. 1 input is set to 1
50 ) Which of the subsequent gates are
assed to the inputs of the OR gate to
convert it to the NAND gate ?
a. NOT
b. AND
c. OR
d. XOR
51) Which of the subsequent statements
is correct?
a. The output of a NOR gate is high if
all of its inputs are high
b. The output of a NOR gate is low if all
of its inputs are low
c. The output of a NOR gate is high if
all of its inputs are low
d. The output of a NOR gate is high if
only 1 of its inputs is low
52 ) How many Boolean functions of 3
variables are there?
a. 64
b. 256
c. 512
d. 1024
53) Main purpose of operating system is
a. computer system is convenient to use
b. use the computer hardware in an
efficient manner
c. both (a) and (b) above
d. none of the above
54) An operating system is
a. intermediary ranging from a user of
computer and the computer hardware
b. an operating system is similar to a
provided government
c. both (a) and (b) above
d. none of the above
55 ) Opera(ng system is resident in
memory of which part?
a. upper
b. lower
c. middle
d. all of the above
56) Time sharing systems must also
provide
a. online system
b. off line system
c. both (a) and (b) above
d. none of the above
57) Restrictive kind of real (me
system is called
a. soA real _me system
b. hard real _me system
c. both (a) and (b) above
d. none of the above
58) Which is/are example of sot real
time system?
a. Multimedia
b. virtual reality
c. under sea exploration
d. all of these
59) Operating system
a. links a program with subroutine it
references
b. provides a layer, user friendly interface
c. enables the programmer to draw a
flow chart
d. all of the above
60) Multi programming was made
possible by
a. input/output units that operate
independently of the CPU
b. operating systems
c. both (a) and (b) above
d. neither (a) nor (b) above
61 ) Which of the subsequent software is
used to simplify using of system
software
a. spreadsheet
b. Operating environment
c. time sharing
d. multitasking
62 ) Remote computing services involve
the use of time sharing and
a. multi _processing
b. interactive processing
c. batch processing
d. real time processing
63) Block cache and buffer cache are
used
a. to improve disk performance
b. to handle interrupts
c. to increase the capacity of the main
memory
d. to speed up main memory learn
operation
64) A computer cannot "boot" if it does
not have
a. compiler
b. loader
c. operating system
d. assembler
65) Real time systems are
a. primarily used on main frame
computers
b. used for monitoring events as they
occur
c. used for program analysis
d. used for real time interactive users
66) The practice of "budling" refer to
a. selling computers alone
b. selling peripheral devices with
computers
c. selling soAware to run on computers
d. giving away software with a computer
purchase
67) Scheduling is
a. allowing job to use the processor
b. unrelated to performance considerations
c. quite simple to implement, even on
large mainframes
d. the identical regardless of the purpose of
the system.
68) The operating system manages
a. memory
b. processor
c. disk and I/O devices
d. all of the above
69) Trap is a -----interrupt
a. synchronous
b. asynchronous
c. hardware
d. operating system's
70) System mask shows whether the
CPU wishes to
a. accept interrupts from a specific
channel
b. reject all interrupts
c. reject a few of interrupts
d. reject all interrupts from opted
channels

Earning:   Approval pending.