1. Compact Disc Recordable (CDR) is a write-once-read-many (WORM) disc.

2. CD-R stands for Compact Disc Recordable and is a digital optical disc storage format.

3. A CD-R disc is a compact disc that can be written once and read multiple times freely.

1. The full form of USB is Universal Serial Bus.

2. USB is a wired device with the help of which you can connect any other device like mobile with laptop, mobile with computer etc.

3. Apart from this, you can also insert a memory card inside the laptop with its help because it is a port in which we can insert things like Pendrive, Card Reader, Data Cable etc.

1. Junk email is called spam. Spam is an email that you did not request, and which usually promotes advertising or other unwanted content.

2. Spoofing is a special type of cyber-attack in which someone attempts to deceive other computer networks by using a computer, device, or network to identify themselves as a legitimate entity.

1. Social media is a technology through which we can share our ideas and information with people.

2. Social media is internet based and it provides instant electronic communication facility to the users. Users connect to social media through a web browser or application from a computer, laptop, tablet or smartphone.

3. Examples of social media –

1. Facebook

2. YouTube

3. Instagram

4. LinkedIn

5. Twitter

6. Whatsapp

7. Pinterest

8. Snapchat

9. Telegram

1. The primary purpose of a computer is to process data and convert it into information. Data is defined as unprocessed information, which is then processed or structured to provide meaningful results. Information is defined as data that can be used for a specific purpose.

2. Computers process data in the following ways-

- Input: Computers receive data through input devices, such as a keyboard, mouse, or camera.

- Processing: Computers process data through processors. The processor operates on data according to a set of instructions.

- Output: Computers display data through output devices, such as monitors, printers, or speakers.

1. Microsoft PowerPoint: This is the most popular slide show presentation software. It is easy to use and has many features that allow you to create engaging and informative slideshows.

2. Google Slides: It is a free online slideshow presentation software. It offers similar features to PowerPoint and can be used in any web browser.

3. LibreOffice Presentation: It is a free and open-source slideshow presentation software. It offers features similar to PowerPoint and Slides.

4. Adobe Presentation: It is a professional slide show presentation software. It has more advanced features than PowerPoint and Slides.

1. The full name of FTP is File Transfer Protocol.

2. It is a network protocol used to transfer files between two computers.

3. FTP is a two-way protocol, which means both computers can send and receive files from each other.

4. FTP runs in two main modes-

- Unprotected Mode: This mode transfers files without any protection.

- Secure Mode: This mode uses encryption to transfer files using SSL or TLS.

1. The motherboard acts as a platform to connect all of the computer's components together.

2. It connects the CPU, memory, hard drive, optical drive, video card, sound card, and other ports and expansion cards directly or through cables.

3. It can be considered as the backbone of the computer.

4. The CPU is the brain of the computer, and it is responsible for executing program instructions and processing data. Memory provides short-term storage for computers,

5. It stores program instructions and data that is used by the CPU.