Network Security Quiz

Which of the following best describes an Intrusion Prevention System (IPS)?

• It only monitors network traffic and alerts administrators of potential threats.

• It automatically takes action to prevent threats after detecting them.

• It blocks network access based on specific port numbers.

• It encrypts data being transmitted over the network.

Access Control Lists (ACLs) are commonly implemented to:

• Encrypt network traffic between devices

• Log all network traffic on a device

• Control traffic based on IP addresses, ports, and protocols

• Perform URL filtering on outgoing network traffic

Which principle in firewall configuration ensures that unspecified traffic is automatically blocked?

• Principle of Least Privilege

• Explicit Allow

• Implicit Deny

• Role-Based Access Control

What is a screened subnet, and how does it enhance network security?

• A segment isolated by two firewalls to separate public-facing servers from internal systems

• A VLAN that restricts access to sensitive data

• A subnet that provides secure encryption for traffic

• A method for load balancing internal traffic

Which is a main advantage of using Network-Based Intrusion Prevention Systems (NIPS) over Host-Based Intrusion Prevention Systems (HIPS)?

• They can detect and prevent local system changes.

• They analyze all network traffic for suspicious activity.

• They provide more detailed reports on host-specific threats.

• They are more effective at preventing local file modifications.

Behavior-based detection in an IDS typically relies on:

• Matching packets against known attack signatures

• Establishing a baseline of normal activity and detecting deviations

• Monitoring for specific IP addresses

• Filtering web traffic by URL

Which detection method is more likely to generate false positives due to variations in network traffic?

• Signature-based detection

• Anomaly-based detection

• Protocol filtering

• Port scanning

What is one potential downside to decrypting HTTPS traffic for web filtering?

• It enhances network performance.

• It allows for better content filtering.

• It could raise privacy concerns.

• It prevents all malware infections.

Which web filtering method involves installing software on individual devices to enforce compliance?

• Centralized filtering

• Proxy-based filtering

• Reputation-based filtering

• Agent-based filtering

How does a centralized proxy server contribute to security?

• It prevents all unauthorized external traffic from reaching the network.

• It encrypts data between internal users and the Internet.

• It controls and monitors web requests based on predefined rules.

• It blocks access to internal files and servers.