Computer Sciences Practice MCQ Page 2

by **Admin** Wed Jan 06, 2016 12:12 am

Question: 15 processors of all computers, whether micro, mini or mainframe must have

ALU
primary storage
control unit
all of these
none of the above

Question: 16 Pick up the correct statement about computers

computers process data with human interven-tion after the program has been fed
all comparisons are made in the control section
the arithmetic-logic section of the CPU selects, interprets and executes the program steps.
the secondary storage devices are usually connected on line to the CPU but for accepting data from them or returning data to them, human intervention is required
computers have the built in ability to obey different types of instructions.

Question: 17 Real time computing is possible because of the following characteristic of computer

storage capability
high speed
accuracy
versatility
automatic in execution

Question: 18 Pick out the wrong statement about modern computer systems

these are simple and easy to take care of
even beginners, untrained persons can safely handle them
they require a highly disciplined approach
it is important to understand the proper handling of each element proper overall procedures must be followed
the negligent use of a computer system will almost always introduce time bobs into the system.

Question: 19 A collection of eight bits is called

byte
word
record
file
none of these

Question: 20 choose the incorrect statement about micro computers, mini-computers, etc

a microcomputer can be placed on a single silicon chip
a minicomputer can have more processing capability than a mainframe model
a microcomputer chip performs the arithmetic-logic and control functions of a microcomputer
ROM chips may be used in micros to permanently store program instruction
most micros use rigid disk storage devices rather than floppy disk drives.

Question: 21 Control Unit of a digital computer is often called the

clock
nerve center
ICs
all of the above
none of the above

Question: 22 Pick up the correct statement

most mainframes are 48-bits machines
thousands of super computers are currently being built
super-computers are usually designed to process accounting applications
mainframes may have multi-processor components that permit several tasks to be processed at the same instant in time
minicomputers can not use high-speed buffer storage components and are thus always slower than mainframe models.

Question: 23 the following acronym recognizes the fact that "computer errors" can usually ve traced to incorrect input data or unreliable programs

GIGO
FIFO
LIFO
DASD
ROM

Question: 24 Group of instructions that directs a computer is called

storage
memory
logic
program
none of the above

Question: 25 Which of the following does not describe one or more characteristic of a computer?

electronic
external storage
stored program
program modification at execution
all of the above are characteristics.

Question: 26 Which of the following statement is true?

the smart approach to using computers is to write programs
knowledge of the system development life cycle is not important to operators who use computers without programming
hands-on exposure to the computer is not helpful to those who write programs
personal computers have been an important contributing factor in the movement toward using computers without programming
none of the above