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CompTIA Network+

Category - Management

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What does the ns lookup utility do?

It performs lookups against a network slave table
It performs DNS lookups to find information on domain names or other DNS records
It looks up records from a null space network
It allows one to bypass the host file on their system

Explanation

Answer: B - ns lookup performs DNS queries to get IP mappings, MX records, or any other sort of DNS record needed.

Key Takeaway: ns lookup was a great tool for performing command line DNS lookups. It is actually considered obsolete now and has been largely replaced by the dig utility.

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CompTIA Network+

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