Network Troubleshooting: Website Accessibility Issues
Question
A network technician is assisting a user who is having problems accessing a particular website.
Other users are reporting that the website is accessible outside of the office.
The technician suspects the problem is with the company's firewall.
Which of the following should the technician use to troubleshoot?
A.
WiFi analyzer B.
Bandwidth speed tester C.
Dig D.
Packet sniffer.
C.
Explanations
A network technician is assisting a user who is having problems accessing a particular website.
Other users are reporting that the website is accessible outside of the office.
The technician suspects the problem is with the company's firewall.
Which of the following should the technician use to troubleshoot?
A.
WiFi analyzer
B.
Bandwidth speed tester
C.
Dig
D.
Packet sniffer.
C.
The correct answer to the question is option C, "Dig."
When a user is having trouble accessing a particular website, there can be several reasons behind it, such as network connectivity issues, server issues, website configuration problems, DNS issues, and firewall restrictions. However, as the other users outside of the office are reporting that the website is accessible, it indicates that the website is up and running and there are no server or website configuration issues.
Thus, the problem could be related to the company's firewall, which is preventing the user from accessing the website. In such a scenario, the network technician needs to troubleshoot the firewall to identify and resolve the issue.
Here's how Dig can help in this situation:
Dig is a command-line tool used for querying DNS (Domain Name System) servers. It is commonly used to troubleshoot DNS-related issues, such as name resolution problems. By using the Dig tool, the network technician can determine if the company's DNS server is resolving the website domain name to the correct IP address.
The technician can perform the following steps:
Open the command prompt on a computer within the company's network.
Type the command "dig" followed by the website domain name that the user is trying to access.
For example: dig www.example.com
If the command returns the correct IP address of the website, it means that the DNS resolution is working fine, and the problem is not related to DNS.
If the command does not return the correct IP address or fails to resolve the website domain name, it indicates a DNS issue that needs to be fixed.
If the DNS resolution is working fine, the next step is to check the company's firewall settings.
The network technician can use other tools like packet sniffer, WiFi analyzer, or bandwidth speed tester to troubleshoot other network-related issues, but in this particular scenario, using Dig is the most appropriate choice as it helps to identify if the DNS is causing the problem.
