You work as a Network Administrator of a TCP/IP network.
You are having DNS resolution problem.
Which of the following utilities will you use to diagnose the problem?
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A. B. C. D.D.
If you are experiencing a DNS resolution problem, you can use the NSLOOKUP utility to diagnose the issue.
NSLOOKUP is a command-line tool used to query the Domain Name System (DNS) to obtain domain name or IP address mapping information. It allows you to test and troubleshoot DNS issues by querying DNS servers to resolve DNS names into IP addresses and vice versa.
To use NSLOOKUP, open a command prompt window and type "nslookup" followed by the domain name or IP address you want to query. NSLOOKUP will display the results of the query, including the IP address of the queried domain name or the domain name associated with the queried IP address.
If NSLOOKUP fails to resolve the domain name or IP address, it will display an error message indicating the reason for the failure. Common reasons for DNS resolution failures include incorrect DNS server settings, network connectivity issues, and DNS server outages.
TRACERT and PING are also network diagnostic utilities, but they are used to test network connectivity rather than DNS resolution. TRACERT is used to trace the route taken by a packet from the source to the destination, while PING is used to test the reachability of a host on a network by sending a packet and measuring the time it takes for the packet to return.
IPCONFIG is another network diagnostic utility that displays the current configuration of the network interface on a Windows-based computer. It can be used to check the IP address, subnet mask, default gateway, and DNS server settings of the network interface. However, it is not used to diagnose DNS resolution issues.