1. The Control key, also called the Ctrl key, is a modifier key found on most computer keyboards. It's usually located in the lower left part of the keyboard, next to the Caps Lock and Tab keys.

2. The Control key is used in combination with other keys to perform various keyboard shortcuts. For example, pressing Ctrl+C copies the selected text to the Clipboard, pressing Ctrl+V pastes text from the Clipboard, and pressing Ctrl+S saves the current document.

3. Various uses of control keys-

Ctrl+C: Copy

Ctrl+V: Paste

Ctrl+X: Cut

Ctrl+Z: Undo

Ctrl+Y: Redo

Ctrl+A: Select all

Ctrl+B: Bold

Ctrl+I: Italic

Ctrl+U: Underline

Ctrl+S: Save

Ctrl+O: Open

Ctrl+N: New

Ctrl+P: Print

Ctrl+F: Find

Ctrl+H: Replace

Pressing Ctrl+Shift+Esc opens the Task Manager.

Pressing Ctrl+Alt+Delete opens the Windows Security screen.

1. When the computer is booting, the BIOS is loaded from the ROM memory.

2. ROM is the abbreviation of Read Only Memory. It is a chip that contains data inserted by the manufacturer that is rarely removed or modified.

3. It houses the BIOS.

4. ROM is a read-only memory.

5. ROM is non-volatile memory.

Designed and launched by the National Payments Corporation of India (NPCI).

1. UPI (Unified Payments Interface): UPI is a mobile-based payment system that allows users to transfer money from their bank accounts to any other bank account instantly and securely.

2. RuPay: RuPay is India's own payment card. It has been developed by the National Payments Corporation of India.

3. Bharat QR: Bharat QR is a standard QR code that can be used to make payments in India. It has been developed by the National Payments Corporation of India.

4. Bharat Bill Payment System (BBPS): BBPS is a bill payment system that allows users to pay electricity, water, gas and other bills from their mobile. It has been developed by the National Payments Corporation of India.

Application for Government Services and Fee Payment: Using the e-Mitra portal, citizens can apply for various government services and pay fees. These services include-

- Bill payment Home

- Application for certificates

- Filing of grievances

- Birth certificate

- Death certificate

- Caste certificate

- Basic address proof

- Ration card

- Passport

- driving license

1. Among the options, terabyte represents the largest amount of data.

2. Computer memory is usually measured in bytes.

3. The storage capacity of a hard disk is measured in megabytes, gigabytes and terabytes.

1. To create a strong password, it can be made up of at least 8 words and a combination of letters, numbers and characters.