Jack is troubleshooting a Linux system that cannot open Web pages from the Internet. He has verified the configuration using ifconfig. He has also checked that the hosts can be pinged on the Internet using IP addresses. Which of the following could be the most likely cause of the problem?
A)The system is configured with an incorrect default gateway.
B)The system is configured with an incorrect subnet mask.
C)A firewall on the network is blocking ICMP traffic.
D)The DNS server is down.

Question

Quizplus · Accepted Answer

The most likely cause of the problem could be that the DNS server is down
Key Takeaway: In this case, the configuration is verified using ifconfig, which means the IP address is configured accurately. Since the hosts can be pinged on the Internet, the connectivity is fine. If the web pages still cannot be accessed, it is most likely that the DNS server is down and is unable to provide a domain name to IP address translation.

Jack Is Troubleshooting a Linux System That Cannot Open Web