Computer Hardware and Software Questions and Answers
Computer Hardware and Software aptitude questions and answers with explanations help students understand the basics of how computers function internally and interact through software. These questions are commonly asked in competitive exams and placement tests by companies like TCS, Wipro, and Infosys. This topic covers essential hardware components such as CPU, memory, storage devices, and input-output units, as well as software categories like system software, application software, and utilities. Mastering these concepts helps candidates build a strong technical foundation and perform well in logical reasoning and technical aptitude sections. Practice more aptitude questions with solutions PDF and attempt online tests to boost accuracy and speed in hardware–software-related problems.
Computer Hardware and Software
1. What is the difference between mnemonic codes and machine codes?
- There is no difference.
- Machine codes are in binary, mnemonic codes are in shorthand English.
- Machine codes are in shorthand English, mnemonic codes are in binary.
- Machine codes are in shorthand English, mnemonic codes are a high-level language.
3. The software used to drive microprocessor-based systems is called:
- assembly language programs
- firmware
- BASIC interpreter instructions
- flowchart instructions
4. A microprocessor unit, a memory unit, and an input/output unit form a:
- CPU
- compiler
- microcomputer
- ALU
6. Which of the following is not a computer bus?
- data bus
- timer bus
- control bus
- address bus
7. The technique of assigning a memory address to each I/O device in the SAM system is called:
- wired I/O
- I/O mapping
- dedicated I/O
- memory-mapped I/O
9. A port can be:
- strictly for input
- strictly for output
- bidirectional
- all the above
10. Which of the following is not a basic element within the microprocessor?
- microcontroller
- arithmetic-logic unit (ALU)
- temporary register
- accumulator