1. To permanently delete any file or folder in Windows, Shift + Delete + Enter is used.

1. Extensions are called top-level domains.

2. File extensions are used so that the computer's operating system or OS can recognize the file type.

3. A file extension primarily refers to a suffix added to the end of a computer file (an object containing information, data or commands) to define the file type.

1. Supercomputer is a powerful computer in terms of data storage capacity, performance and data processing.

2. A supercomputer is a powerful computer that can process large amounts of data and computations very quickly.

3. Supercomputers perform copious amounts of mathematical calculations.

4. Supercomputers are used for a wide variety of applications, including meteorology, medical research, and nuclear weapons research.

1. Using Ctrl + F opens the option of ‘Find and Replace’.

2. In Word, the shortcut key Ctrl + F is used to open the Find box.

3. Ctrl + F is used to find a document.

1. A computer is an electronic machine, which presents the required information or result (Output) by doing a specialized process according to a series of instructions (Program) given on the prescribed data (Input).

2. The following are the main characteristics of a computer.

(1) Speed

(2) Accuracy

(3) Economy

(4) Reliability

(5) Storage & Retrieval

1. MS to monitor all changes in the document. Track Changes features are used in Word 2010.

2. Track Changes is a way for Microsoft Word to keep track of changes you make to your text.

All statements are true.

- CRT The monitor is the thinnest monitor.

- Dot matrix is the fastest computer.

- CAG memory is slower than the main memory.

1. Optical Mark Reading (OMR) is a method of entering data into a computer system.

2. Optical mark readers read pencil or pen marks made in pre-determined positions on paper forms as answers to questions or tick list signs.