Explanation

 A computer system consists of a:

computer case,

a power supply unit,

a motherboard,

a central processing unit ,

main memory,

and a hard disk drive.

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while:

Input devices include :

a keyboard,

mouse,

microphone,

video camera,

and image scanner.

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Output devices include:

a monitor,

speakers,

and a printer.

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RY 16-01-2023

ND11-4-2023

Explanation

Hard Disk is where data is permanently stored.

Unlike RAM and cache memory, which are volatile.

Hard disks retain data even when the computer is turned off.

Explanation

Following are the functions of a operating system.

1. Allocates resources
2. Monitor Activities
3. Manages disks and files

Explanation

Firewalls provide protection against outside cyber attackers by shielding your computer or network from malicious or unnecessary network traffic.

Firewalls can also prevent malicious software from accessing a computer or network via the internet.

Explanation

ROM (Read-Only Memory)

• Stores non-modifiable data and instructions permanently.
• Non-volatile memory used for essential computer instructions.

RAM (Random Access Memory)

• Volatile memory used for temporary data storage.
• Supports active processes and operations on a computer.

Explanation

4404 is divisible by both 3 and 4, making it divisible by 12.

Explanation

Explanation

In PowerPoint, the "Color scheme" option allows you to change the colors of different objects, such as shapes, graphs, and charts, without affecting the content.

This option is found in the "Design" tab, and it enables you to select a new color scheme that will be applied to all elements in the presentation, while keeping the content unchanged.

Explanation

In MS Word, the "Home" keyboard key is used to move the cursor to the beginning of the current line.

This shortcut is often used to quickly navigate to the start of a line, especially when editing or formatting text.

Explanation

The basic operations performed by a computer are arithmetic operations, logical operations and storage and relative functions.

Basically computer does 5 basic operations that are input, output, process,storing and controlling.