All Free Computer Science and IT MCQs with Answers

1201. What type of computers are client computers (most of the time) in a client-server system?

• A. Mainframe
• B. Mini-computer
• C. Microcomputer
• D. PDA

Explanation: Client computers in a client-server network are usually microcomputers such as desktops or workstations. The server provides shared services, while the client requests and uses them.

1202. which statement describe "Hackers"?

• A. all have the same motive
• B. break into other people's computers
• C. may legally break into computers as long as they do not do any damage
• D. are people who are allergic to computers

Explanation: In the usual security context, hackers are people who gain unauthorized access to other people's computers or systems. Hackers do not all share one motive, and legal testing without damage specifically describes authorized security professionals rather than hackers generally.

1203. Junk e-mail is also called_________?

• A. spam
• B. spoof
• C. sniffer script
• D. spool

Explanation: Spam is the term for unsolicited bulk email, commonly sent for advertising, scams, or malicious purposes. Spoofing means disguising an identity or source, while a sniffer captures network traffic.

1204. What type of resource is most likely to be a shared common resource in a computer Network?

• A. Printers
• B. Speakers
• C. Floppy disk drives
• D. None of these

Explanation: Printers are commonly shared over a network so multiple users can send documents to one device. Speakers and floppy drives are normally attached locally and are much less typical shared network resources.

1205. __________is a combination of hardware and software that facilitates the sharing of information between computing devices.

• A. Network
• B. Peripheral
• C. Expansion board
• D. Digital device

Explanation: A network combines communication hardware and software so connected computers can exchange information and share resources. A peripheral or expansion board is only a component, not the complete sharing arrangement.

1206. A computer program that translates one program instructions at a time into machine language is called a/an___________?

• A. Interpreter
• B. CPU
• C. Compiler
• D. Simulator

Explanation: An interpreter translates and executes a program one statement or instruction at a time. A compiler translates the complete source program before execution, so it is not the intended choice.

1207. In assembly languages symbols are used instead of binary code, these symbols are called?

• A. Mnemonics
• B. ALGOL
• C. Procedures
• D. None of these

Explanation: Assembly language uses mnemonics such as ADD, MOV, and SUB as readable substitutes for machine instructions represented in binary. ALGOL is a programming language, not the name for these symbols.

1208. In which language is source program written?

• A. English
• B. Symbolic
• C. High Level
• D. None of these

Explanation: A source program is generally written by a programmer in a high-level programming language before being translated into machine code. Symbolic language is a lower-level representation, such as assembly language.

1209. BASIC stands for ________?

• A. Basic All Purpose Symbolic Instruction Codes
• B. Beginners All Purpose Symbolic Instruction Codes
• C. Beginners All Purpose Symbolic Intelligent Codes
• D. Beginners Anti Purpose Symbolic Instruction Codes

Explanation: BASIC expands to Beginners' All-purpose Symbolic Instruction Code. It was designed as an accessible high-level programming language for beginners.

1210. The symbols used in an assembly language are _________?

• A. Code
• B. Assembler
• C. Mnemonics
• D. All of the above

Explanation: Assembly language uses mnemonics such as MOV, ADD, and SUB as symbolic forms of machine instructions. An assembler translates these mnemonics into machine code, so it is not the name of the symbols themselves.