Identify the Differences Between Private and Public IP Addressing NETWORKING-FOUNDATIONS Practice Questions (Page 4)

Questions 16–18

1. 16foundation · easy

   Which of the following is a valid private IP address according to RFC 1918?

   • A192.168.1.100
   • B11.0.0.1
   • C172.15.1.1
   • D192.167.5.5
   Reveal Solution Discussion Select an answer first
2. 17application · easy

   A small business has 10 employees, each with a computer and a smartphone. The ISP provides a single public IP address. The business router is configured to use NAT with Port Address Translation (PAT). What is the primary benefit of this configuration?

   • AIt allows the business to use public IP addresses internally without conflict.
   • BIt allows all 20+ devices to share the single public IP address for internet access.
   • CIt provides each device with a unique public IP address for direct inbound connections.
   • DIt eliminates the need for private IP addresses on the internal network.
   Reveal Solution Discussion Select an answer first
3. 18expert · hard

   A network engineer is troubleshooting a connectivity issue. A user can access the internet but cannot access a specific internal server at 172.20.10.5. The user's workstation has an IP address of 192.168.1.100. The network uses a firewall with NAT. What is the most likely cause of the issue?

   • AThe firewall has a route for the 172.20.10.0/24 network, but the workstation's traffic is being sent to the default gateway, which is on a different subnet.
   • BThe firewall is performing NAT on the traffic to the internal server, translating the destination to a public IP.
   • CThe firewall is performing NAT on the traffic from the workstation, translating the source to a public IP, which the internal server rejects.
   • DThe firewall is configured to NAT all traffic from the 192.168.1.0/24 network, including traffic destined for the 172.20.10.0/24 network, which breaks the connection.
   Reveal Solution Discussion Select an answer first