EC-Council
312-50V11 · Question #46
312-50V11 Question #46: Real Exam Question with Answer & Explanation
The correct answer is B: The gateway is not routing to a public IP address.. The computer and gateway share the same 192.168.1.0/24 subnet (LAN works), but the gateway itself is failing to route traffic upstream to the public internet.
Question
A technician is resolving an issue where a computer is unable to connect to the Internet using a wireless access point. The computer is able to transfer files locally to other machines, but cannot successfully reach the Internet. When the technician examines the IP address and default gateway they are both on the 192.168.1.0/24. Which of the following has occurred?
Options
- AThe computer is not using a private IP address.
- BThe gateway is not routing to a public IP address.
- CThe gateway and the computer are not on the same network.
- DThe computer is using an invalid IP address.
Explanation
The computer and gateway share the same 192.168.1.0/24 subnet (LAN works), but the gateway itself is failing to route traffic upstream to the public internet.
Common mistakes.
- A. 192.168.1.x is a private IP address defined in RFC 1918, so the computer is in fact using a valid private address.
- C. Both the computer and gateway are on 192.168.1.0/24, meaning they are on the same network - this is confirmed by successful local file transfers.
- D. A 192.168.1.x address with a /24 subnet is a valid private IP address configuration, not an invalid one.
Concept tested. Default gateway routing and internet connectivity
Reference. https://www.rfc-editor.org/rfc/rfc1918
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