CS & IT Interview Questions For Entry-Degree Jobs (2026 Up to date)

1

What’s a pc?

An digital gadget that processes knowledge into data

2

What’s {hardware}?

Bodily elements of a pc

3

What’s software program?

Applications and directions for a pc

4

What’s an working system?

Software program that manages {hardware} and software program

5

Instance of OS

Home windows, Linux, macOS

6

What’s a CPU?

Central Processing Unit

7

Components of the CPU

ALU, Management Unit, Registers

8

What’s RAM?

Unstable reminiscence is used for short-term knowledge

9

What’s ROM?

Non-volatile reminiscence shops everlasting knowledge

10

Distinction between RAM & ROM

RAM is short-term, ROM is everlasting

11

What’s an enter gadget?

System used to enter knowledge

12

Instance of an enter gadget

Keyboard, Mouse

13

What’s an output gadget?

A tool that reveals outcomes

14

Instance of an output gadget

Monitor, Printer

15

What’s a storage gadget?

System to retailer knowledge

16

Main reminiscence

RAM and ROM

17

Secondary reminiscence

HDD, SSD, Pen drive

18

What’s a motherboard?

The primary circuit board of a pc

19

What’s ALU?

Performs arithmetic and logic operations

20

What’s knowledge?

Uncooked information

21

What’s data?

Processed knowledge

22

What’s binary system?

Quantity system with base 2

23

Binary digits

0 and 1

24

What’s bit?

Smallest unit of knowledge

25

What’s byte?

8 bits

26

What’s KB?

1024 bytes

27

What’s MB?

1024 KB

28

What’s GB?

1024 MB

29

What’s TB?

1024 GB

30

What’s software program license?

Authorized permission to make use of software program

31

System software program

Software program that runs system

32

Utility software program

Software program for consumer duties

33

Instance of utility software program

MS Phrase

34

What’s utility software program?

Software program for system upkeep

35

What’s a compiler?

Converts high-level code to machine code

36

What’s an interpreter?

Converts code line by line

37

What’s an assembler?

Converts meeting language

38

What’s a programming language?

Language to jot down packages

39

Instance of a programming language

C, Java, Python

40

What’s an algorithm?

Step-by-step resolution

41

What’s a flowchart?

Diagram of program logic

42

What’s debugging?

Eradicating errors

43

What’s a bug?

Error in this system

44

What’s the Web?

International community of computer systems

45

What’s WWW?

Assortment of internet pages

46

What’s a browser?

Software program to entry web sites

47

Instance of a browser

Chrome, Firefox

48

What’s a URL?

Handle of a web site

49

What’s electronic mail?

Email correspondence

50

What’s an IP deal with?

Distinctive deal with of the gadget

51

IPv4 measurement

32-bit

52

IPv6 measurement

128-bit

53

What’s LAN?

Native Space Community

54

What’s WAN?

Large Space Community

55

What’s MAN?

Metropolitan Space Community

56

What’s a modem?

Converts digital to analog

57

What’s a router?

Connects networks

58

What’s a firewall?

Community safety system

59

What’s a virus?

Dangerous laptop program

60

What’s an antivirus?

Software program to take away viruses

61

What’s malware?

Malicious software program

62

What’s phishing?

On-line fraud

63

What’s cloud computing?

Web-based computing

64

Instance of cloud

Google Drive

65

What’s a database?

Organized knowledge assortment

66

What’s DBMS?

Database Administration System

67

Instance of DBMS

MySQL

68

What’s SQL?

Language to handle databases

69

What’s a desk?

Rows and columns

70

What’s a main key?

Distinctive identifier

71

What’s backup?

Copy of knowledge

72

What’s restore?

Recuperate backed-up knowledge

73

What’s a GUI?

Graphical Consumer Interface

74

What’s CLI?

Command Line Interface

75

What’s open-source software program?

Free supply code software program

76

Instance of open-source

Linux

77

What’s proprietary software program?

Paid software program

78

Instance of proprietary

MS Home windows

79

What’s multitasking?

Working a number of duties

80

What’s multiprocessing?

A number of CPUs

81

What’s booting?

Beginning laptop

82

Chilly boot

Energy on begin

83

Heat boot

Restart

84

What’s cache reminiscence?

Excessive-speed reminiscence

85

What’s digital reminiscence?

Makes use of HDD as RAM

86

What’s a PDF?

Transportable Doc Format

87

What’s a spreadsheet?

Knowledge in rows & columns

88

Instance of a spreadsheet

MS Excel

89

What’s presentation software program?

Slide creation

90

Instance of presentation software program

PowerPoint

91

What’s IoT?

Web of Issues

92

What’s AI?

Synthetic Intelligence

93

What’s machine studying?

Studying from knowledge

94

What’s encryption?

Knowledge safety methodology

95

What’s decryption?

Convert encrypted knowledge

96

What’s CAPTCHA?

Human verification

97

What’s Bluetooth?

Quick-range wi-fi tech

98

What’s Wi-Fi?

Wi-fi networking

99

What’s HTML?

Internet web page markup language

100

What’s CSS?

Internet web page styling

101

What’s JavaScript?

Internet scripting language

102

What’s e-commerce?

On-line shopping for & promoting

103

What’s a digital cost?

On-line transaction

104

What’s OTP?

One-Time Password

105

What’s BIOS?

Fundamental Enter Output System

1

What’s a pc?

A machine that takes enter, processes it, and produces output

2

What’s the function of an working system?

It manages {hardware} and offers a platform for functions

3

What’s the distinction between {hardware} and software program?

{Hardware} is bodily; software program is logical

4

What’s RAM?

Momentary reminiscence used throughout program execution

5

Why is RAM risky?

Knowledge is misplaced when the facility is off

6

What’s ROM?

Everlasting reminiscence storing startup directions

7

What occurs while you energy on a pc?

The booting course of begins, and the OS masses

8

What’s booting?

Technique of beginning a pc

9

Chilly boot vs heat boot?

Chilly boot = energy on, Heat boot = restart

10

What’s CPU?

Mind of the pc

11

Components of the CPU?

ALU, Management Unit, Registers

12

What’s ALU?

Performs arithmetic and logical operations

13

What’s cache reminiscence?

Excessive-speed reminiscence between CPU and RAM

14

What’s knowledge?

Uncooked information

15

What’s data?

Processed, significant knowledge

16

What’s software program?

A set of directions

17

Varieties of software program?

System software program and Utility software program

18

Instance of system software program?

Home windows, Linux

19

Instance of utility software program?

MS Phrase, Excel

20

What’s a programming language?

Language used to jot down packages

21

Distinction between a compiler and an interpreter?

The compiler converts the entire code, interpreter line by line

22

What’s an algorithm?

Step-by-step resolution to an issue

23

What’s a flowchart?

Diagrammatic illustration of logic

24

What’s debugging?

Discovering and fixing errors

25

What’s a bug?

Error in a program

26

What’s a database?

An organized assortment of knowledge

27

What’s DBMS?

Software program to handle databases

28

Instance of DBMS?

MySQL

29

What’s SQL?

Language to handle databases

30

What’s a main key?

Uniquely identifies a report

31

What’s a community?

Linked computer systems sharing sources

32

What’s LAN?

Community inside a small space

33

What’s WAN?

Community masking a big space

34

What’s IP deal with?

Distinctive deal with of a tool

35

IPv4 vs IPv6?

IPv4 is 32-bit, IPv6 is 128-bit

36

What’s the Web?

International community of computer systems

37

What’s WWW?

Assortment of internet pages

38

What’s a browser?

Software program to entry web sites

39

Instance of a browser?

Chrome

40

What’s a URL?

Internet deal with

41

What’s electronic mail?

Email correspondence

42

What’s cloud computing?

Utilizing companies over the web

43

Instance of a cloud service?

Google Drive

44

What’s malware?

Malicious software program

45

What’s a virus?

A program that damages techniques

46

What’s an antivirus?

Software program to detect and take away viruses

47

What’s a firewall?

Community safety system

48

What’s phishing?

On-line fraud to steal data

49

What’s backup?

Copy of knowledge for security

50

What’s restore?

Recovering backed-up knowledge

51

What’s a GUI?

Graphical interface with icons

52

What’s CLI?

Command-based interface

53

What’s open-source software program?

Free software program with supply code

54

Instance of open-source?

Linux

55

What’s proprietary software program?

Paid software program

56

What’s multitasking?

Working a number of packages

57

What’s digital reminiscence?

Utilizing a disk as RAM

58

What’s IoT?

Web-connected good gadgets

59

What’s AI?

Machines simulating human intelligence

60

What’s machine studying?

Techniques studying from knowledge