14.8.3 - Understanding Firewalls

What is the primary function of a firewall?

• To increase the speed of the network

• To provide internet access

• To store data securely

• To allow or deny traffic based on a set of rules

Which type of firewall is generally installed on a single machine?

• Network-based device

• Host-based device

• Packet filtering firewall

• Circuit layer gateway

What is an access control list (ACL) used for in a firewall?

• To store user passwords

• To monitor network speed

• To list all connected devices

• To define rules for allowing or denying traffic

Which of the following is NOT a criterion for filtering rules in a firewall?

• Type of traffic

• Source/destination port

• Network speed

• Protocol

What type of traffic can a firewall recognize and block?

• HTTP, HTTPS, SSH, VoIP

• Email, SMS, MMS

• Bluetooth, NFC, Infrared

• FTP, SFTP, SCP

Which firewall type scans packets based on TCP or UDP transmission?

• Packet filtering

• Circuit layer gateway

• Application level gateway

• Host-based device

What is a characteristic of hardware firewalls?

• Installed on individual machines

• Cheaper than software firewalls

• Placed between the internet and internal network

• Only protect against software threats

Which firewall type monitors the contents of the packet?

• Packet filtering

• Network-based device

• Circuit layer gateway

• Application level gateway

What is a disadvantage of software firewalls compared to hardware firewalls?

• Slower to update

• Harder to install

• Less secure

• More expensive

Which of the following is a benefit of using a host-based firewall?

• Provides network-wide protection

• Cheaper than hardware firewalls

• Requires no installation

• Monitors all network traffic