EC-Council
312-50V10 · Question #598
312-50V10 Question #598: Real Exam Question with Answer & Explanation
The correct answer is B. 127.0.0.1. When a browser is configured to use itself as a proxy server, it points to the loopback address 127.0.0.1, which routes traffic back to the local machine rather than to an external host.
Information Security and Ethical Hacking Fundamentals
Question
While checking the settings on the internet browser, a technician finds that the proxy server settings have been checked and a computer is trying to use itself as a proxy server. What specific octet within the subnet does the technician see?
Options
- A10.10.10.10
- B127.0.0.1
- C192.168.1.1
- D192.168.168.168
Explanation
When a browser is configured to use itself as a proxy server, it points to the loopback address 127.0.0.1, which routes traffic back to the local machine rather than to an external host.
Common mistakes.
- A. 10.10.10.10 is a private RFC 1918 address in the 10.0.0.0/8 range and would point to a separate host on the network, not back to the local machine itself.
- C. 192.168.1.1 is a private RFC 1918 address most commonly assigned to default gateways and routers, not used as a self-referential or loopback address.
- D. 192.168.168.168 is also a private RFC 1918 address with no special loopback designation; it would resolve to another device on the local network.
Concept tested. IPv4 loopback address identification and purpose
Reference. https://www.rfc-editor.org/rfc/rfc5735
Topics
#loopback address#proxy settings#127.0.0.1#network configuration
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