Computer Knowledge MCQ-40

The primary key is selected from the:

(A) composite keys
(B) determinants
(C) candidate keys
(D) foreign keys
(E) All of these

___ is the most general phase-structured grammar,

(A) Regular
(B) Context-sensitive
(C) Context-free
(D) All of these
(E) None of these

The term used to define all input and output devices in a computer system is

(A) Monitor
(B) Software
(C) Shared resources
(D) Hardware
(E) None of these

The best reason that a computer needs to have a hard disk is because

(A) it can then use the same programs as other computers
(B) it would not work without one
(C) it can store information when it is switched off
(D) it can store information while it is working
(E) None of these

A document that explains how to use a software program is called __ manual

(A) User
(B) System
(C) Software
(D) Program
(E) Technical

Multiplexing involves __ path and __ channel.

(A) one, one
(B) one, multiple
(C) multiple, one
(D) multiple, multiple
(E) None of these

In addition to keying data directly into a database, data entry can be done from a (an)

(A) input form
(B) table
(C) field
(D) data dictionary
(E) None of these

Application software

(A) is used to control the operating System
(B) is designed to help programmers
(C) performs specific task for computer users
(D) is used for making design only
(E) All of the above

__ is the ability of a device to “jump” direct. to the requested data.

(A) Sequential access
(B) Random access
(C) Quick access
(D) All of the above
(E) None of these

__ a printed information exists in real sense and is more permanent from of output than the output existing on display device.

(A) Soft copy
(B) Carbon copy
(C) Hard copy
(D) Desk copy
(E) None of these

The Internet allows you to __

(A) send electronic mail
(B) view Web pages
(C) connect to servers all around the world
(D) All of the above
(E) None of these

Codes consisting of bars or lines of varying widths or lengths that are computer readable are known as __

(A) an ASCII code
(B) a magnetic tape
(C) an OCR scanner
(D) a bar code
(E) None of these

With a CD you can __

(A) Read
(B) Write
(C) Read and Write
(D) Either Read or Write
(E) None of these

A ___ contains buttons and menus that provide quick access to commonly used commands.

(A) tool bar
(B) menu bar
(C) window
(D) find
(E) None of these

Computer systems are comprised of __

(A) Hardware, programs, processors, procedures and people
(B) Hardware, programs, Information, people, and procedures
(C) Hardware, programs. Information, people and networks
(D) Hardware, software, procedures, data and people
(E) None of these

The blinking symbol on the computer screen is called the

(A) mouse
(B) logo
(C) hand
(D) palm
(E) cursor