Q.What is cyber security? State any four measures to ensure cyber security.

Cyber security protects systems and data; listing practical measures shows you can apply it.

Cyber security is the practice of protecting computers, networks, programs, and data from unauthorised access, attack, or damage. Its core goals are the CIA triad — Confidentiality, Integrity, and Availability of information.

Four measures to ensure cyber security (any four acceptable):

1. Strong passwords — long, mixed-character passwords, changed regularly and never reused across accounts.
2. Two-factor authentication (2FA) — adding a second check, such as an OTP, beyond the password.
3. Antivirus / anti-malware software — kept updated, to detect and remove harmful programs.
4. Firewall — to filter network traffic and block unauthorised access.
5. Encryption — scrambling data so only authorised parties can read it.
6. Regular backups — so data can be restored after loss or a ransomware attack. …

Listing only 'antivirus' is too thin. Give four distinct measures. Do not confuse cyber security (protecting the system) with cy …