CSC 100 | Study Mode

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Question 1
A
Memory Unit
B
Arithmetic & Logic Unit
C
Input Unit
D
Output Unit
Explanation
The Input Unit converts the data, which the user enters into a language which the computer understands, i.e. it converts the data into binary format. The Output Unit is responsible for giving the results in userunderstandable format. The Storage Unit is responsible for storing the data after immediate results of processing whereas; the ALU is responsible for various arithmetic and bitwise operations.

Correct option: C
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Question 2
A
Assembly Language
B
Binary Language
C
BASIC
D
C Language
Explanation
The Computer understands only binary language which is written in the form of 0s & 1s. A computer can understand assembly language but an assembler is required which converts the assembly language to binary language. Similarly, for understanding high level languages, compilers/interpreters are required.

Correct option: B
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Question 3
A
Byte
B
Nibble
C
Bit
D
KB
Explanation
A bit is defined as the smallest unit of data in a computer system. It is used as a short form of Binary Digit. A bit can have only two values 0 or 1. A nibble comprises of 4 bits, a byte is a collection of 8 bits whereas KB (Kilobyte) is equal to 1024 bytes.

Correct option: C
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Question 4
A
2
B
4
C
8
D
1
Explanation
A nibble is defined as a unit of data which comprises of 4 binary digits or half of 8-bit byte. Therefore, 1 nibble = 4 bits. A bit is the smallest unit of data in a computer system. A byte = 8 bits, therefore, half of a byte=4 bits=a nibble.

Correct option: B
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Question 5
A
IN 82
B
INPUT 82
C
INP 82
D
82 INP
Explanation
The input/output instructions are used to transfer information between external peripherals and the CPU. The correct format of an input instruction is: IN 8-bit port address. Here, IN 82 is the correct option, where 82 is the designated port address. All the other options are invalid.

Correct option: A
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Question 6
A
Mouse
B
Joystick
C
Keyboard
D
Bar Code Reader
Explanation
A keyboard is an input device which originated in the 1880s and is used to give instructions to the computer in the form of letters and numbers. Mouse is used for the selection of various objects on the screen, joystick is mainly used for gaming purpose and bar code readers are used for reading the barcodes.

Correct option: C
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Question 7
A
1024 TB
B
1024 EB
C
1024 ZB
D
1024 PB
Explanation
1 yottabyte is equal to 1024 ZB, which stands for zettabyte. Further, 1 ZB=1024 EB (exabyte) and and 1 EB=1024PB (petabyte).

Correct option: C
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Question 8
A
It reads instructions and data from the outside world.
B
It converts the data into computer acceptable format.
C
It makes the data into user understandable format.
D
It supplies the data and instructions to the computer for further processing.
Explanation
The input unit converts the data into computer understandable format i.e. binary format and not the user understandable format. It is the duty of the output unit to make the data into user understandable format.

Correct option: C
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Question 9
A
1.ALU 2. MU
B
1.Output unit 2.Input Unit
C
1.MU 2. ALU
D
1.Input Unit 2.Output Unit
Explanation
The above diagram is a simple explanation which describes how the instruction is given to the CPU, how it is processed, and then how the result is obtained. So here, the input unit is used to give instructions to the central processing unit and the output unit is responsible for giving the result to the user

Correct option: D
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Question 10
A
Controlling
B
Outputting
C
Inputting
D
Processing
Explanation
The Output Unit is responsible for giving the results to the user in the form of a printed report or visual display. The process is referred to as outputting. Controlling is nothing but the manner and sequence in which the instructions are being operated. Inputting means giving instructions to the system whereas, processing means performing certain operations and calculations.

Correct option: B

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