Unit 1: Protecting The Network

The primary function of a firewall is to:

• Increase network speed
• Monitor and filter network traffic
• Enhance user experience
• Facilitate data sharing

Which of the following is NOT a common purpose of a firewall?

• Preventing unauthorized access
• Protecting against malware
• Improving network performance
• Enforcing security policies

Firewalls help to protect against which type of threat?

• Only internal threats
• Only external threats
• Both internal and external threats
• Neither internal nor external threats

A firewall can be used to:

• Block specific websites
• Limit network access to certain hours
• Prevent data leakage
• All of the above

A firewall that examines each packet individually without considering the overall context of the communication is known as:

• Stateful firewall
• Packet filtering firewall
• Application layer firewall
• Proxy firewall

Which type of firewall operates at the application layer of the OSI model?

• Packet filtering firewall
• Stateful firewall
• Application layer firewall
• Proxy firewall

A firewall that filters traffic based on network addresses ports and protocols is:

• Packet filtering firewall
• Stateful firewall
• Application layer firewall
• Proxy firewall

Which firewall type provides the highest level of protection but also has the highest overhead?

• Packet filtering firewall
• Stateful firewall
• Application layer firewall
• Proxy firewall

Application layer firewalls operate at which layer of the OSI model?

• Network layer
• Transport layer
• Application layer
• Session layer

Which of the following is NOT a common feature of an application layer firewall?

• Deep packet inspection
• Intrusion prevention
• Network address translation (NAT)
• Application-level filtering