Top 1000+ Solved Important Computer MCQs For Competitive Exams part-1 MCQ Questions Answer
Q. The microprocessor of a computer cannot operate on any information if that information is not in its
a. secondary storage
b. main storage
c. ALU
d. Logic unit
e. None of these
Q. Where have the program and data to be located before the ALU and control unit of a computer can operate on it?
a. Internal memory
b. Secondary memory
c. Microprocessor
d. Magnetic tapes
e. None of these
Q. The only things moving around inside a computer are
a. Is and Os
b. electrons
c. bytes
d. proton
e. None of these
Q. The data between the computer and peripherals always passes via in input/output
a. port
b. A/D converter
c. D/A converter
d. buffer memory
e. None of these
Q. Preparing a magnetic disk for data storage is called
a. booting
b. formatting
c. debugging
d. commissioning
e. None of these
Q. How many full adders are needed to add two 4-bit numbers with a parallel adder?
a. 8
b. 4
c. 2
d. 16
e. None of these
Q. If you see a diskette with a piece of foil covering its notch, it is said to be
a. write-protected
b. copy-protected
c. write-enabled
d. foil-covered
e. None of these
Q. What is the name of the screen symbol that shows the placement of the next character?
a. Mouse
b. Cursor
c. Track ball
d. Graphic tablet
e. None of these
Q. Point out the odd item amongst the following
a. computer mouse
b. touchpad
c. light pen
d. printer
e. None of these
Q. The very small and cheap computer built into many home devices is called computer.memory, tape or disk memory is
a. slower and more expensive
b. slower and less expensive
c. faster and more expensive
d. faster and less expensive
e. None of these
Q. What is the main advantage of magnetic core memory over semiconductor RAM memory?
a. More compact and smaller
b. More economical
c. A it does not have to write after reading
d. Non-volatile
e. None of these
Q. Which of the following memories contains a thin film of magnetic material sandwitched between two permanent bias magnets?
a. ROM
b. Magnetic disk
c. Core memory
d. Bubble memory
e. None of these
Q. The minimum time delay required between the initiation of two successive memory operations is known as
a. memory cycle time
b. memory access time
c. transmission time
d. waiting time
e. None of these
Q. When the time to establish link is large and the size of data is small, the preferred mode of data transfer is
a. circuit switching
b. packet switching
c. time division multiplexing
d. All of these
e. None of these
Q. In circuit switching
a. data is stored at intermediate nodes
b. transmission path is set before data transfer
c. dedicated communication link is not required
d. All of these
e. None of these