1. Also known as junk mail or unsolicited bulk email, is a subset of electronic spam involving nearly identical messages sent to multiple recipients by e-mail.

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.

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

The best way to protect your hard drive data is a multi-tiered approach that includes the following:-

1. Data Backup: This is the most important security measure. If your hard drive fails, is stolen, or the data becomes corrupted, you must have a way to restore the data. Data backups should be maintained regularly and in a safe location.

2. Password Protection: Password protects your hard drive. This will help prevent unauthorized access. Use strong passwords that are easy to remember, but difficult to guess.

3. Encryption: Encrypt your hard drive. This will make the data unreadable to people who do not know the password. Encryption provides an additional security layer that keeps data safe in the event of theft or loss.

4. Virus and malware protection: Install a reliable antivirus and antimalware program on your computer. This will help protect your data from harmful software.

5. Secure file sharing: If you plan to share your data with others, make sure you do so in a secure manner. Use a secure file-sharing service that offers encryption and password protection.

To delete a sentence from a document, you would use highlight and delete.

1. In MS Excel 2010, the address of the topmost cell is Al.

2. Microsoft Excel is a commercial spreadsheet application written and distributed by Microsoft for Microsoft Windows and Mac OS X.

3. Microsoft Excel is a spreadsheet tool capable of performing calculations, analyzing data, and integrating information from different programs.