Network Security Quiz 2

What is the primary role of a proxy server in network security?

• To distribute network traffic across multiple servers

• To provide a layer of protection to the client by acting as an intermediary

• To enhance security by controlling access to sensitive resources

• To capture and analyze network traffic for malicious activity

Answer explanation

The primary role of a proxy server in network security is to provide a layer of protection to the client by acting as an intermediary.

Which of the following is NOT a benefit provided by a proxy server?

• Traffic management

• Content filtering

• Load balancing

• Anonymity for users by masking their IP addresses

Answer explanation

The correct choice is 'Load balancing' because it is NOT a benefit provided by a proxy server. Proxy servers do not typically handle load balancing tasks.

What is the main purpose of a jump server?

• To distribute network traffic to optimize performance

• To act as a sensor for capturing malicious traffic

• To provide access to other hosts and enhance security by controlling access to sensitive resources

• To provide fault tolerance in a network

Answer explanation

The main purpose of a jump server is to provide access to other hosts and enhance security by controlling access to sensitive resources.

What is a key feature of a load balancer?

• To mask user IP addresses for anonymity

• To provide a Web Application Firewall (WAF) for protection against common web application attacks

• To capture and analyze network traffic for malicious activity

• To act as an intermediary for web access

Answer explanation

A key feature of a load balancer is to provide a Web Application Firewall (WAF) for protection against common web application attacks.

What distinguishes a Layer 7 load balancer from a Layer 4 load balancer?

• Layer 7 load balancer makes decisions based on IP address and TCP/UDP port values

• Layer 7 load balancer includes a Web Application Firewall

• Layer 7 load balancer makes forwarding decisions based on application-level data

• Layer 7 load balancer is used to capture and analyze network traffic

Answer explanation

A Layer 7 load balancer makes forwarding decisions based on application-level data, distinguishing it from a Layer 4 load balancer that operates at the transport layer.

What is the function of a sensor in network security?

• To distribute network traffic across multiple servers

• To provide fault tolerance in a network

• To capture and analyze network traffic for malicious activity

• To provide access to other hosts and enhance security

Answer explanation

A sensor in network security is used to capture and analyze network traffic for malicious activity, helping to detect and prevent security threats.

What can cause a security device to enter a failure state according to the text?

• Power surges, overheating, and physical damage

• Regular maintenance and updates

• Proper user training and awareness

• Strong password policies

Answer explanation

Power surges, overheating, and physical damage can cause a security device to enter a failure state according to the text.

What does 'fail-open' mean in the context of a security device failure?

• The device stops all network traffic

• Network or host access is preserved if possible

• The device enters the most secure state available

• The device requires manual reset to restore functionality

Answer explanation

In the context of a security device failure, 'fail-open' means that network or host access is preserved if possible, ensuring continuity of operations.

What does 'fail-closed' mean in the context of a security device failure?

• The device enters the most secure state available

• Network or host access is preserved if possible

• All data on the device is encrypted automatically

• The device disconnects from the network to prevent further access

Answer explanation

In the context of a security device failure, 'fail-closed' means the device enters the most secure state available, ensuring protection even in case of failure.

What is the risk of a fail-open control?

• It prioritizes confidentiality and integrity over availability

• It prioritizes availability over confidentiality and integrity

• It causes immediate system downtime

• It encrypts all data passing through the device

Answer explanation

A fail-open control prioritizes availability over confidentiality and integrity, meaning that in case of failure, it will allow traffic to pass through without inspection to maintain availability.