Railway Science (Computer – Number System)

Total Questions: 5

1. In which form is data stored in a computer ? [RRB NTPC CBT - I (04/01/2021) Morning]

Correct Answer: (a) Binary
Solution:

The processor converts the commands and information given by the user into binary data for the computer to execute them. Binary data is numerically represented by 0s and 1s.

2. Which of the following languages does a computer use to process data? [RRB NTPC CBT - I (13/01/2021) Evening]

Correct Answer: (d) Binary
Solution:

A computer uses Binary language to process data. A binary code represents text, computer processor instructions, or any other data using a two-symbol system.

3. How many distinct symbols are used in the hexadecimal number system? [RRB NTPC CBT - I (28/01/2021) Morning]

Correct Answer: (c) 16
Solution:

Hexadecimal Number: Symbols "0"–"9" to represent values 0 to 9, and "A"–"F" (or alternatively "a"–"f") to represent values from 10 to 15.

4. Which of the following is NOT used for storage in computer systems? [RRB NTPC CBT - I (12/03/2021) Morning]

Correct Answer: (c) Adder
Solution:

An adder is a kind of calculator that is used to add two binary numbers. Computer Registers are a type of computer memory used to quickly accept, store, and transfer data and instructions that the CPU needs immediately.
A flip flop in digital electronics is a circuit with two stable states that can be used to store binary data. A latch is an electronic device that changes its output immediately on the basis of the applied input.

5. Which of the following is an example of the binary number system? [RRB NTPC CBT - I (06/04/2021) Evening]

Correct Answer: (a) 100101
Solution:

A number system where a number is represented by using only two digits (0 and 1) with a base 2 is called a binary number system.