Answer :
If a user can ping the IP address of a web server but cannot ping the web server host name, the DNS server is likely malfunctioning.
The Domain Name System (DNS) is responsible for resolving domain names to their corresponding IP addresses. When a user tries to access a web server by entering its host name (e.g., www.example.com), the DNS server translates that host name into an IP address so that the user's computer can establish a connection with the server. If a user is able to successfully ping the web server's IP address but cannot ping the host name (e.g., pinging www.example.com), it indicates a problem with the DNS server. This suggests that the DNS server is not properly resolving the host name to its associated IP address.
There could be various reasons for the DNS server malfunction, such as misconfigurations, network connectivity issues, DNS server downtime, or incorrect DNS records. When the DNS server fails to resolve the host name, the user's computer is unable to establish a connection using the host name but can still communicate with the server directly using its IP address.
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