0478 Firewalls

Which of the following is are key functions of a firewall?

• 
  prevent unauthorised access to a private network

• Improving Internet speeds between public and private networks

• Ensuring data is backed up

• Buffering incoming and outgoing data to ensure a constant data traffic speed

• Blocking data traffic to a private network

Which of these are true about firewalls?

• Uses a set of rules to decide what packets to allow

• Checks the websites that users request

• Checks all incoming and outgoing data packets

• Can change the IP addresses of each packet according to as set of rules

  
  

• Can block applications by checking port numbers of each packet

Which of these are true about virusses and firewalls?

• Firewalls with deep packet inspection can check packets for viruses

• Only firewalls with deep packet inspection can check packets for source IP address

• All firewalls check packets for viruses

• All firewalls check all packets reeived

  
  

• Firewalls only check the first packet in a transmission

Firewalls can

• be hardware

• be software

• use deep packet inspection

• change IP addresses

Firewalls can

• monitor incoming data traffic

• monitor outgoing data traffic

• act as intermediary servers

• can block unauthorised traffic

Which of the following is NOT a function of a firewall?

• Blocking unauthorized access

• Monitoring network traffic

• Encrypting data

• Allowing safe connections

What type of firewall filters traffic based on source and destination IP addresses?

• Packet-filtering firewall

• Proxy firewall

• Stateful inspection firewall

• Next-generation firewall

Messages or parts of the world that are blocked are kept on a list known as a

• Black list

• Blocked list

• Grey List

• White List

The image below shows an example of...

• ARP cache

• certificate authority

• firewall rules

• public key infrastructure (PKI)

Firewall rules can be based on...

• IP addresses

• ports

• domain names

• file names

• protocol types