Computer Science questions and answers

Computer Science Questions and Answers

Challenge your competence level in computers, computing, algorithms, hardware and software with these Computer science questions and answers.

26.

The two types of operating system are

A.

command line and graphical user interface

B.

translators and assemblers

C.

system software and application software

D.

UNIX and LINUX

Correct answer is A

Operating systems can be categorized into two types based on their user interface: Command Line Interface (CLI) and Graphical User Interface (GUI). CLI requires users to type commands to interact with the system, while GUI uses visual elements like icons, windows, and buttons for interaction

27.

What is the difference between internal and external modem

A.

external modems are PCI or ISA expansion cards while internal modems are traditionally plug into a serial port on the computer

B.

internal modems are PCI or ISA expansion cards while external modems are traditionally plug into a serial port on the computer

C.

external modems are PCI or ISA expansion cards while internal modems are USB modems

D.

they are PCI or ISA expansion cards

Correct answer is B

Internal modems are PCI or ISA expansion cards, they tend to be simple to install while external modems are traditionally plug into a serial port on the computer

28.

Who invented the Napier Bones

A.

John Napier

B.

Samuel Napier

C.

Joseph Jacquard

D.

Charles Babbage

Correct answer is A

Napier's bones is a manually-operated calculating device created by John Napier of Merchiston for calculation of products and quotients of numbers. The method was based on the ancient mathematical principle known as the Arabic lattice, or gelosia multiplication

29.

When the computer reboots itself without triggering the hardware based reset, it is called ?

A.

cold booting

B.

hard reboot

C.

cold reboot

D.

soft reboot

Correct answer is D

soft or warm reboot involves restarting a computer under software control without triggering the hardware based reset

30.

EDVAC was produced using which of these concepts ?

A.

packet routing

B.

stored program

C.

circuit switching

D.

packet switching

Correct answer is B

EDVAC (Electronic Discrete Variable Automatic Computer) was produced using the 'stored program' concept. This concept is a design architecture for computers where the instructions to be executed by the computer are stored in the same memory that holds the data. 'Circuit switching', 'packet routing', and 'packet switching' are concepts related to network communication, not computer design