6.1. Describe How Firewalls Operate to Filter Traffic. 100-150 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   How does a firewall use port numbers to filter traffic?

   • AIt identifies the hardware manufacturer of the sending device
   • BIt determines the physical path the data takes through the network
   • CIt indicates the encryption strength of the connection
   • DIt identifies the application or service that the traffic is intended for
   Reveal Solution Discussion Select an answer first
2. 17foundation · easy

   Which firewall policy is generally considered more secure because it only allows traffic that is explicitly permitted?

   • AStateful inspection
   • BPacket filtering
   • CDefault-deny
   • DDefault-allow
   Reveal Solution Discussion Select an answer first
4. 18application · easy

   A network administrator needs to allow network time synchronization from internal clients to an NTP server at 192.168.10.5. NTP uses UDP port 123. Which rule should be added?

   • AAllow TCP from internal network to 192.168.10.5 on port 123.
   • BAllow UDP from 192.168.10.5 to internal network on port 123.
   • CAllow ICMP from internal network to 192.168.10.5.
   • DAllow UDP from internal network to 192.168.10.5 on port 123.
   Reveal Solution Discussion Select an answer first
5. 19foundation · easy

   Which of the following is a typical component of a firewall rule?

   • ACPU temperature of the firewall
   • BMAC address of the internet service provider
   • CSource IP address
   • DHard drive capacity of the firewall
   Reveal Solution Discussion Select an answer first
6. 20application · easy

   A network administrator is configuring a firewall to allow network monitoring tools to ping devices on a remote subnet. The monitoring server is at 192.168.1.10 and the remote subnet is 10.10.0.0/16. Which rule should be added?

   • AAllow ICMP from 192.168.1.10 to 10.10.0.0/16.
   • BAllow TCP from 192.168.1.10 to 10.10.0.0/16 on port 80.
   • CAllow all traffic from 192.168.1.10 to 10.10.0.0/16.
   • DAllow UDP from 192.168.1.10 to 10.10.0.0/16 on port 53.
   Reveal Solution Discussion Select an answer first