HTTP

FTP

IPsec

To create a secure, encrypted connection over a public network

 To block all internet traffic

To increase internet speed

To ensure confidentiality, integrity, and authentication

To increase data size

Transport layer

Network layer

Data Link layer

To install antivirus software

To hold data or a computer system hostage until a payment is made

To delete all user data immediately

To improve the performance of the infected computer

Monitor network speed

Protect the system from malware

Access a computer system remotely by bypassing normal authentication

Encrypt user files for backup

It spreads automatically through the network

It requires continuous user interaction to function

It activates malicious code when a specific trigger or event occurs

It sends spam messages to other computers

Worms always need user action to run

Worms can replicate themselves without needing a host program

Worms can only infect image files

Worms cannot spread through networks

Ensuring that information is accessible only to authorized users

Ensuring that information is always available to everyone

Ensuring that information is modified frequently

A malicious program that attaches itself to other files and spreads when they are run

A program that protects the computer from attacks

A hardware problem that damages the hard disk