Your computer's hard drive has crashed and all data has been lost. To safeguard against data loss, you should have

a.kept a tape backup, b. used a password on all confidential files
c. stored your data frequently while working, d. an uninterrupted power supply

Answers a and c would certainly have helped.

Answers b and d wouldn't prevent the computer's hard drive from crashing!

What do you think is better? a or c?

All the answers I have are correct and I will also give page numbers for your references.

1. C (Pg.17)
2. A
3. D
4. D (Pg.13)
5. A
6. A (Pg.47)
7. A (Pg.22)
8. C (Pg.22)
9. D (Pg.39)
10. B (Pg.54)
11. A (Pg.27)
12. A (Pg.24)
13. C (Pg.15)
14. D (Pg.47)
15. D
16. A (Pg.25)
17. D (Pg.56)
18. C (Pg.22)
19. A
20. A (Pg.42)

To safeguard against data loss, you should have taken multiple measures to protect your data. Let's go through each option and understand how it would have helped:

a. Kept a tape backup: This means regularly creating a backup of your data on tape storage. Tape backups serve as an offline copy of your data, reducing the risk of loss in case of hardware failure or data corruption. To implement this, you would typically have needed tape drives and backup software that supports tape storage.

b. Used a password on all confidential files: Applying passwords to your confidential files adds an extra layer of security and helps prevent unauthorized access. While it doesn't directly protect against data loss, it safeguards your data from being compromised if someone gains unauthorized access to your computer or storage devices. You can protect your files with passwords using various file encryption tools or built-in operating system features.

c. Stored your data frequently while working: Regularly saving and backing up your data while working is crucial. By doing so, you minimize the risk of losing significant progress or important files when unexpected events occur. It is recommended to utilize both local and off-site backups, such as external hard drives, network-attached storage (NAS), or cloud storage solutions. Also, using version control systems for software development projects can help track changes and restore previous versions.

d. An uninterrupted power supply (UPS): Power outages or sudden power surges pose a significant risk to electronic devices and the data stored on them. Investing in a UPS can protect against data loss by providing temporary power during an outage, allowing you to save your work and safely shut down your computer. A UPS typically provides a few minutes of power, which is usually sufficient to avoid data loss due to sudden shutdowns.

In summary, having a combination of measures such as regular backups (including offline or tape backups), password protection, frequent data storage, and an uninterrupted power supply can provide a comprehensive strategy for safeguarding against data loss.