Which command should you use to test DNS resolution of a domain? Learn how nslookup queries DNS servers to resolve domain names to IP addresses—essential for Cisco Certified Support Technician (CCST) Networking 100-150 exam success.
Table of Contents
Question
A technician needs to test the DNS resolution of a domain. Which command should be used?
A. ping
B. nslookup
C. tracert
D. arp -a
E. route print
Answer
B. nslookup
Explanation
The nslookup command queries DNS servers to resolve domain names to IP addresses.
To test the DNS resolution of a domain, use the nslookup command.
The nslookup command queries DNS servers to obtain information about a domain or hostname, specifically resolving domain names to their corresponding IP addresses.
It is available on Windows, Linux, and macOS, and can be used in both interactive and non-interactive modes. For a quick DNS lookup, simply enter nslookup domain-name in the command prompt or terminal.
The output will display the IP address associated with the domain, confirming whether DNS resolution is functioning correctly.
nslookup is also useful for troubleshooting DNS issues, checking different DNS record types, and verifying DNS server responses.
The nslookup command queries DNS servers to resolve domain names to IP addresses, making it the standard tool for testing DNS resolution.
Cisco Certified Support Technician (CCST) Networking 100-150 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the Cisco Certified Support Technician (CCST) Networking 100-150 exam and earn Cisco Certified Support Technician (CCST) Networking 100-150 certification.