70 Important MCQs Computer Science for Job Test

1-
The brain of any computer system is?
Answer-CPU
2-
Which of the following computer language is used for artificial intelligence?
Answer- PROLOG
3-
Who is known father of artificial intelligence?
Answer-McCarthy
4- Which operating system first apple company introduced?
Answer- Mac Os
5-
Spreadsheets are called in which part of Ms Office?
Answer-Excel
6-
Move the focus to select each of the following areas of the window?
Answer- F6
7-
New Slide is in which menu?
Answer-Insert

8-
How can we delete characters from right of the cursor?
Answer- Del Key
9-
What is the real name of mouse pointer?
Answer-Cursor
10-
How many columns and rows are in Excel?
Answer-256 Columns and 65536 Rows

11-
Quikly create a Microsoft excel formula to get the sum of all cells by highlighting the cells you
want to
know the value of and pressing?
Answer- Alt and = together
12-
Footnotes located under?
Insert Menu

13-
The tracks on a disk which can be accessed without repositioning the R/W heads are?
Answer-Cylinder
14-
Which part interprets program instructions and initiate control operations?
Answer- Control unit
15-
The binary system uses powers of?
Answer-Base 2 ( 0 & 1 )
16-
A computer program that converts assembly language to machine language is?
Answer-Assembler
17-
The time required for the fetching and execution of one simple machine instruction is?
Answer- CPU cycle
18-

Binary numbers need more places for counting because?
Answer- Binary base is small
19-
Which access method is used for obtaining a record from a cassette tape?
Answer-Sequential
20-
The section of the CPU that selects interprets and sees to the execution of program instructions?
Answer-CU
21-
The term referring to evacuating the content of some part of the machine is known as?
Answer-Dump
22-
A single packet on a data link is known as?
Answer- Frame
23-
The process of communicating with a file from a terminal is?
Answer- Interrogation
24-
A common boundary between two systems is called?
Answer-Interface
25-
Which computer has been designed to be as compact as possible?
Answer-Micro computer
26-
Which method is used to connect a remote computer?
Answer-Dialup
27-
The symbols used in an assembly language are?
Mnemonics
28-
A general purpose single-user microcomputer designed to be operated by one person at a time is?
Answer-PC
29-
ASCII stands for?

Answer- American standard code for information interchange
30-
Which device of computer operation dispenses with the use of the keyboard?
Answer- Mouse
31-
The list of coded instructions is called?
Answer-Computer program
32-
An optical input device that interprets pencil marks on paper media is?
Answer-O.M.R
33-
Most important advantage of an IC is its?
Answer-Extremely high reliability
34-
A program that converts computer data into some code system other than the normal one is
known as?
Answer-Encoder
35-
A device designed to read information encoded into a small plastic card is?
Answer-Badge reader
36-
A hybrid computer uses a _____ to convert digital signals from a computer into analog signals?
Answer-Modem
37-
A group of magnetic tapes, videos or terminals usually under the control of one master is?
Answer-Cluster
38-
Any device that performs signal conversion is?
Answer- Modulator
39-
A code consisting of light and dark marks which may be optically read is known as?
Answer- Bar code
40-
The first generation of computers available was based on the bit micro processors?

Answer- 8
41-
The complete picture of data stored in database is known as?
Answer- Schema
42-
A language which is close to that used within the computer is?
Answer- Low-level language
43-
The device that can both feed data into and accept data from a computer is?
Answer- Input-Output device
44-
A modern digital computer has? Extremely high speed B. Large memory C. Almost unlimited
array
Answer- All of the above
45-
Which of the following can store information in the form of microscopic pits on metal disks?
Answer- Laser disks
46-
A storage system for small amounts of data is?
Answer- Magnetic card
47-
Compilers and interpreters are themselves?
Answer- Programs
48-
A compiler means?
Answer- A program which translates source program into object program
49-
A pen shaped device which can sense light, and is used to point at spots on a video screen?
Answer- Light pen
50-
Computer memory consists of?
Answer- RAM B. ROM C. PROM D. All of the above
51-

A path by which communication is achieved between a central processor and other devices is
called?
Answer- Bus
52-
A memory that does not change its contents without external causes is known as?
Answer- Static memory
53-
RAM is used as a short memory because it is?
Answer- Volatile
54-
Which is a device that changes information into digital form?
Answer- Digitizer
56-
Which network is a packet switching network?
Answer- EuroNET
57-
Symbolic languages were developed in?
Answer- 1950
58-
What is the name given to the molecular-scale computer?
Answer- Nanocomputer
59-
The first microprocessors produced by Intel Corps. And Texas Instruments were used primarily
to control
small?
Answer- Calculators
60-
Which printer uses a combination of laser-beam & electro photographic techniques?
Answer- Laser printers
61-
A billionth of a second is defined as a?
Answer- Nanosecond
62-
Where have the program and data to be located before the ALU and control unit of a computer
can operate

on it?
Answer- Internal memory
63-
When was Apple Macintosh II microcomputer introduced in the market?
Answer- 1983
64-
Human beings are referred to as Homosapiens. Which device is called Silicon sapiens?
Answer- Computer
65-
The most important advantage of a video disk is?
Answer- Potential capacity
66-
Time during which a job is processed by the computer is?
Answer- Execution time
67-
Backing storage is so named because it?
Answer- backs up the computer's main memory
68-
The ASCII code for the character J is?
Answer- 1010 0001
69-
Which is the user programmed semiconductor memory?
Answer- EPROM
70-
The two kinds of main Memory are?
Answer- ROM and RAM
71-
A monitor's _____ is the distance between the holes in the mask behind the screen. This helps
determine
how sharp the dots appear?
Answer- dot pitch