You are troubleshooting an issue where a PC can reach some hosts on the Internet (using either DNS name or IP address), while several other hosts on the Internet are not reachable. From the PC you can Ping all devices on your local subnet. What is most likely causing the problem?

The options are missing from the question,below are the options to choose from;

A) incorrect (or missing) routes in a routers routing table

B) incorrect DNS configuration on the PC

C) incorrect default gateway configuration on the PC

D) duplicate IP addresses on your LAN

The correct answer to the question is option A

INCORRECT (OR MISSING) ROUTES IN A ROUTERS ROUTING TABLE.

Explanation: When it is possible for a PC to ping some devices but not actually all,we can then make an assumption that either it has a wrong subnet that is configured or the router from the path to the remote device actually has an incorrect or a missing routes to the device.