Hardware Basic Multiple Choice Question MCQ
Categories: MCQS
1. Which of the following statement is not correct about DMA? (a) DMA is much faster and more efficient than a CPU processor to perform I/O in the computer system. (b) DMA sends data from memory to an I/O device directly, without using CPU in the computer. (c) DMA takes a lot of time to transfer data from memory to I/O. (d) Without DMA, CPU reads the block of data from memory and writes it to an I/O device in the computer. Answer: (c) 2. CPU is fabricated on a single integrated circuit board that is known as (a) Motherboard (b) Microprocessor (c) CU (d) ALU Answer: (b) 3. The main task of the central processing unit is to (a) carry out program instruction (b) store data or information for further use (c) process data and information (d) Both a and c Answer: (d) 4. Which of the following unit helps to establish the communication between memory and ALU in the computer? (a) CMU (b) CCU (c) CPU (d) None Answer: (c) 5. Internal memory of central processing unit is nothing but (a) a set of registers (b) a set of ALU and CU (c) buses (d) None Answer: (a) 6. Which of the following invented the first microprocessor? (a) Vint Cerf (b) Terence Percival (c) John Mauchly (d) Ted Hoff Answer: (d) 7. The microprocessor consists of millions of (a) registers (b) microchips (c) transistors (d) semiconductors Answer: (c) 8. The microprocessor of a computer system (a) understand machine language and low-level language (b) understand machine language and high-level language (c) understand only machine language (d) understand only assembly language Answer: (c) 9. Which memory unit communicates directly with the CPU? (a) Main memory (b) Register (c) Secondary memory (d) Auxiliary memory Answer: (a) 10. Which memory is used for storing data and program instructions currently being executed by CPU? (a) Mass memory (b) Auxiliary memory (c) Internal memory (d) Non-volatile memory Answer: (c) 11. Which of the following components remains on the motherboard? (a) CMOS battery (b) PCI slot (c) Case fan (d) Expansion slot (e) All of these Answer: (e) 12. The read and write operations in the computer is carried out through (a) data bus (b) address bus (c) control bus (d) All of these Answer: (c) 13. Which of the following key should be pressed to move to the beginning of a line of text? (a) Page up (b) Shift (c) Home (d) Enter Answer: (c) 14. Which key is used to launch the Start button? (a) Esc (b) Shift (c) Windows (d) Shortcut Answer: (c) 15. What kind of device is a computer mouse? (a) Input (b) Output (c) Pointing device (d) Both a and c Answer: (d) 16. Which button is known as a middle button used as the third mouse button? (a) Right button (b) Left button (c) Scroll wheel (d) None of these Answer: (c) 17. A joystick is primarily used for which purpose? (a) controlling sound on the screen (b) computer gaming (c) enter text (d) draw pictures Answer: (b) 18. Which input device moves in all directions, controls the movement of the cursor, and continues moving in the previously pointing direction? (a) Mouse (b) Trackball (c) Joystick (d) Both a and c Answer: (c) 19. Which of the following input device is a handheld electro-optical pointing device that is used for making drawings, graphics, and for menu selection? (a) Light pen (b) Touch screen (c) Trackball (d) Joystick Answer: (a) 20. Which input device is mainly used to detect marks on paper? (a) Barcode reader (b) OMR (c) OCR (d) MICR Answer: (b)