Computer Awareness is a crucial section for various competitive exams, including the OSSC (Odisha Staff Selection Commission) Excise Sub-Inspector (SI) examination. To assist aspirants in their preparation, here are the top 30 Multiple Choice Questions (MCQs) covering a range of topics related to computer fundamentals and applications.
Top 30 Basic Computer Literacy MCQs For OSSC Excise SI
- Which of the following is not a positional number system?
a) Roman Number System
b) Octal Number System
c) Binary Number System
d) Hexadecimal Number System
Answer: a - The value of radix in binary number system is _____________
a) 2
b) 8
c) 10
d) 1
Answer: a - The binary equivalent of the decimal number 10 is __________
a) 0010
b) 10
c) 1010
d) 010
Answer: c - A computer language that is written in binary codes only is _____
a) machine language
b) C
c) C#
d) Pascal
Answer: a - The octal equivalent of 1100101.001010 is ______
a) 624.12
b) 145.12
c) 154.12
d) 145.21
Answer: b - 6. The input hexadecimal representation of 1110 is _______________
a) 0111
b) E
c) 15
d) 14
Answer: b - A bit in computer terminology means either 0 or 1.
a) True
b) False
Answer: a - Convert the binary number 10101 to its decimal equivalent.
a) 21
b) 12
c) 22
d) 31
Answer: a - Which of the following is not a binary number?
a) 1111
b) 101
c) 11E
d) 000
Answer: c - Which of the following is the correct representation of a binary number?
a) (124)_2
b) 1110
c) (110)_2
d) (000)_2
Answer: d - What could be the maximum value of a single digit in an octal number system?
a) 8
b) 7
c) 6
d) 5
Answer: b - In a number system, each position of a digit represents a specific power of the base.
a) True
b) False
Answer: a - The maximum number of bits sufficient to represent an octal number in binary is _______.
a) 4
b) 3
c) 7
d) 8
Answer: b - The binary number 111 in octal format is ________________.
a) 6
b) 7
c) 8
d) 5
Answer: b -
Convert (22)8 into its corresponding decimal number.
a) 28
b) 18
c) 81
d) 82
Answer: b - The octal equivalent of the binary number (0010010100)2 is ______________
a) 422
b) 242
c) 224
d) 226
Answer: c - Octal subtraction of (232)8 from (417)8 will give ______________
a) 165
b) 185
c) 815
d) 516
Answer: a - The 1’s complement of 0.101 is _________________.
a) 1.010
b) 0.010
c) 0.101
d) 1.101
Answer: a - Convert (5401)8 to hexadecimal.
a) A01
b) A02
c) B01
d) C01
Answer: c - Express the decimal format of the signed binary number (10010)2
a) 2
b) 12
c) -12
d) -2 Answer: d - Brain of the computer is ____________.
a) Control unit
b) Arithmetic and Logic unit
c) Central Processing Unit
d) Memory
Answer: c - Control Unit acts as the central nervous system of the computer.
a) True
b) False
Answer: a - What does MBR stand for?
a) Main Buffer Register
b) Memory Buffer Routine
c) Main Buffer Routine
d) Memory Buffer Register
Answer: d - In the instruction ADD A, B, the answer gets stored in ___________.
a) B
b) A
c) Buffer
d) C
Answer: b - What does PC stand for?
a) Program Changer
b) Program Counter
c) Performance Counter
d) Performance Changer
Answer: b - Which of the following holds the last instruction fetched?
a) PC
b) MAR
c) MBR
d) IR
Answer: d - The portion of the processor which contains the hardware required to fetch the operations is _______.
a) Datapath
b) Processor
c) Control
d) Output unit
Answer: a - Causing the CPU to step through a series of micro operations is called _________.
a) Execution
b) Runtime
c) Sequencing
d) Pipelining
Answer: c - The functions of execution and sequencing are performed by using ______________.
a) Input Signals
b) Output Signals
c) Control Signals
d) CPU
Answer: c - What does D in the D-flip flop stand for?
a) Digital
b) Direct
c) Delay
d) Durable
Answer: c
