Railway Science (Computer – Central Processing Units (CPU)

Total Questions: 10

1. Which of the following is the time taken by the CPU to access a location in memory ? [RRB NTPC CBT - II (13/06/2022) Shift I]

Correct Answer: (c) Memory access time
Solution:

Memory access time is how long it takes for a character in RAM (Random Access Memory) to be transferred to or from the CPU.
Instruction cycle - It is the cycle that the CPU follows from boot-up until the computer has shut down in order to process instructions.
Clock speed, also known as clock rate or clock frequency, is a measure of how fast a computer’s central processing unit (CPU) can execute instructions. It is typically measured in gigahertz (GHz).

2. Intel core i9 is a type of _____. [RRB NTPC CBT - I ( 29/12/2020) Evening]

Correct Answer: (b) processor
Solution:

Intel Core i9 is a line of Intel CPUs introduced in May 2017. Its frequencies range from 2.9 to 3.6 GHz and up to 5.0 GHz when using Intel Turbo Boost. Types of Processor: Microprocessor, Microcontroller, Embedded Processor, Digital Signal Processor.

3. Which of the following is NOT a computer component ? [RRB NTPC CBT - I (07/01/2021) Morning]

Correct Answer: (b) Paper
Solution:

Computer components- Motherboard, CPU /processor, RAM (Random Access Memory), Hard drive, Power supply unit, Video card, Network card, Bluetooth card (or adapter).

4. Which is called the brain of any computer system ? [RRB NTPC CBT - I (09/01/2021) Morning]

Correct Answer: (c) CPU
Solution:

CPU (Central Processing Unit) is the "brain" of the computer because it is responsible for executing instructions and performing calculations.
The primary use of a monitor is to display images, text, video, and graphics information generated by the computer via a computer's video card. Arithmetic Logic Unit serves as a combinational digital circuit that performs arithmetic and bitwise operations on binary numbers.
An uninterruptible power supply (UPS) is a device that allows a computer to keep running for at least a short time when incoming power is interrupted.

5. Which of the following is a single chip based device that is a complete processor in itself and is capable of performing arithmetic and logical operations. [RRB NTPC CBT - I (11/01/2021) Morning]

Correct Answer: (c) Microprocessor
Solution:

Microprocessor - It is a single chip-based device that is a complete processor in itself and is capable of performing arithmetic and logical operations. A modem, which stands for "modulator-demodulator," is a device connecting your home to your internet service provider (ISP) through a physical connection.

6. Where is the cache memory located ? [RRB NTPC CBT - I (17/01/2021) Evening]

Correct Answer: (a) CPU
Solution:

Cache memory is an extremely fast memory type that acts as a buffer between RAM and the CPU.

7. What are the three constituents of a CPU in a computer ? [RRB NTPC CBT - I (21/01/2021) Evening]

Correct Answer: (b) Control unit, ALU, memory
Solution:

Communication between the ALU, control unit, and registers, as well as between RAM and input and output devices takes place by the use of a bus.

8. Which part of a CPU coordinates all the functions of a computer ? [RRB NTPC CBT - I (27/01/2021) Morning]

Correct Answer: (c) Control unit
Solution:

Its main function is to manage and coordinate the operations of the CPU.

9. The speed of a CPU can be measured in ____. [RRB NTPC CBT - I (15/03/2021) Evening]

Correct Answer: (c) Megahertz (MHz)
Solution:

The clock speed measures the number of cycles the CPU executes per second, measured in GHz (gigahertz) or Megahertz.

10. ____ is a hardware device generally located on the motherboard of a computer and acts as an internal memory of the CPU. [RRB NTPC CBT - I (24/07/2021) Morning]

Correct Answer: (d) RAM
Solution:

Floppy disk - It is a small magnetic disk for storing computer data and programs.