400 Computer Awareness MCQ Set-3
Q51. If the CPU executes multiple programs simultaneously, it will be known as:
A. Multithreading
B. Multiprocessing
C. Multitasking
D. Multi-programming
Answer – C. Multitasking
Explanation-
Q52. Which device among the following is used for sending digital data over a phone line?
A. Router
B. Modem
C. Switch
D. Firewall
Answer – B. Modem
Explanation-
Q53. What is used to make computer chips?
A. Copper
B. Aluminum
C. Silicon
D. Gold
Answer – C. Silicon
Explanation-
Q54. In which of the following forms is data stored in a computer?
A. Decimal form
B. Binary form
C. Hexadecimal form
D. Octal form
Answer – B. Binary form
Explanation-
Q55. Where is RAM located?
A. Graphics Card
B. Hard Disk
C. Motherboard
D. Processor
Answer – C. Motherboard
Explanation-
Q56. A wireless technology built into electronic gadgets used for exchanging data over short distances is:
A. Wi-Fi
B. Bluetooth
C. NFC (Near Field Communication)
D. RFID (Radio Frequency Identification)
Answer – B. Bluetooth
Explanation-
Q57. By pressing which key can we move to the beginning of a page?
A. Home
B. End
C. Page Up
D. Page Down
Answer – A. Home
Explanation-
Q58. Who invented Java?
A. Bill Gates
B. Steve Jobs
C. Linus Torvalds
D. James Gosling
Answer – D. James Gosling
Explanation-
Q59. What is used in RAM?
A. Vacuum tubes
B. Magnetic disks
C. Optical fibers
D. Semiconductor memory
Answer – D. Semiconductor memory
Explanation-
Q60. An Assembler is used to translate a program written in:
A. Machine Language
B. High-Level Language
C. Assembly Language
D. Compiler Language
Answer – C. Assembly Language
Explanation-
Q61. What is the meaning of OMR?
A. Optical Mouse Recognition
B. Optical Memory Recognition
C. Optical Mark Reader
D. Online Message Retrieval
Answer – C. Optical Mark Reader
Explanation-
Q62. The technology used to provide internet by transmitting data over the wires of the telephone network is:
A. DSL
B. Wi-Fi
C. Ethernet
D. Bluetooth
Answer – A. DSL
Explanation-
Q63. Verification is the process of:
A. Encryption
B. Decryption
C. Authentication
D. Authorization
Answer – C. Authentication
Explanation-
Q64. Which language was used as the first-generation language?
A. Assembly Language
B. Machine Language
C. FORTRAN
D. COBOL
Answer – B. Machine Language
Explanation-
Q65. Which level language is Assembly Language?
A. High-level programming language
B. Low-level programming language
C. Machine language
D. Procedural language
Answer – B. Low-level programming language
Explanation-
Q66. What is the name of the first supercomputer in India?
A. PARAM 10000
B. PARAM 8000
C. FLOPS-1
D. CRAY-1
Answer – B. PARAM 8000
Explanation-
Q67. What is LINUX?
A. Application software
B. System software
C. Operating system
D. Programming language
Answer – C. Operating system
Explanation-
Q68. A 32-bit word computer can access how many bytes at a time?
A. 1 byte
B. 2 bytes
C. 4 bytes
D. 8 bytes
Answer – C. 4 bytes
Explanation-
Q69. The first microprocessor built by the Intel Corporation was called:
A. 8086
B. 4004
C. 6502
D. Pentium
Answer – B. 4004
Explanation-
Q70. A computer that processes both analog and digital data is called:
A. Mainframe computer
B. Supercomputer
C. Hybrid computer
D. Quantum computer
Answer – C. Hybrid computer
Explanation-
Q71. In 1999, the Melissa virus was widely publicized:
A. Trojan horse
B. Worm
C. E-mail virus
D. Spyware
Answer – C. E-mail virus
Explanation-
Q72. Which of the following commands is given to reboot the computer?
A. Ctrl+Alt+Del
B. Ctrl+Shift+Esc
C. Alt+F4
D. Ctrl+S
Answer – A. Ctrl+Alt+Del
Explanation-
Q73. What is correcting errors in a program called?
A. Debugging
B. Compiling
C. Linking
D. Testing
Answer – A. Debugging
Explanation-
Q74. BCD stands for:
A. Binary-Coded Division
B. Binary Coded Decimal
C. Binary Compressed Data
D. Binary-Coded Double
Answer – B. Binary Coded Decimal
Explanation-
Q75. What type of virus uses computer hosts to reproduce itself?
A. Trojan horse
B. Worm
C. Adware
D. Spyware
Answer – B. Worm
Explanation-
