C++ | MCQs

Explanation

Virtual memory is a technique that uses a computer's hard drive to extend the amount of available RAM.

It's also known as virtual storage or a page file. 

Explanation

RAM (Random Access Memory) refers to the memory in your computer.

It's used for temporarily storing data that your computer is actively using or processing.

Explanation

The motherboard is the main circuit board of a computer that connects all the essential components, such as the:

• CPU
• RAM
• hard drives
• peripherals
  

Explanation

Old computers those from the 1940s and 1950s, were based on vacuum tubes

Vacuum tubes were used in early computers to amplify electrical signals and act as switches.

They could control the flow of electricity in a circuit,

Making it possible to perform calculations and process information

Explanation

• The BIOS (Basic Input/Output System) is a firmware that is embedded on the motherboard of a computer.
• To run BIOS, a motherboard is the only necessary component.
• The BIOS is responsible for initializing and testing the hardware components, including the CPU, RAM, and hard disk, but it does not require these components to be present to run.

Explanation

The printer that typically has a drum is a laser printer.

Laser printers use a cylindrical drum as part of their printing process.

Explanation

Webcams can be built-in computer hardware or peripheral devices and are commonly connected to a device using USB or wireless protocols.

Explanation

For using a variable in C++, we have to first define it to tell the compiler about its existence so that compiler can allocate the required memory to it.

AGM 24-12-2022

Explanation

A communications device is any type of hardware capable of transmitting data, instructions, and information between a sending device and a receiving device.

Explanation

An entry point is the point at which execution of program starts.

In C++, it is the main () function.

AGM 17-12-2022