A network security system that monitors and controls incoming and outgoing network traffic is called:

• Firewall 

• Proxy server

• Router

• Switch

A client-server security mechanism that verifies the identity of a user is:

• Authentication

• Encryption

• Proxy

• Firewall

A commonly used protocol for securing electronic mail communication is:

• SMTP

• IMAP

• PGP

• FTP

4. A firewall that filters traffic based on predefined security rules is:

• Stateful firewall

• VPN

• IDS

• IPS

5. A method used to secure data transmission over a network is:

• Encryption

• Compression

• Caching

• Load balancing

6. 6. A key feature of a proxy server in network security is:

• Hiding IP addresses

• Enhancing bandwidth

• Increasing latency

• Reducing firewall efficiency
  
  

7. An attack that tricks users into revealing confidential information is:

• Phishing

• Spoofing

• Denial of Service

• Sniffing

8.A security mechanism that prevents unauthorized access to a computer network is:

• Firewall

• Gateway

• Hub

• Bridge

9.A primary function of Intrusion Detection Systems (IDS) is:

• Monitoring network traffic

• Encrypting email messages

• Managing firewall rules

• Assigning IP addresses

10. A technology that allows secure access to a private network over the internet is:

• VPN

• DNS

• NAT

• DHCP