CompTIA Exam CV0-003 Topic 5 Question 97 Discussion

Actual exam question for CompTIA's CV0-003 exam

Question #: 97
Topic #: 5

A cloud administrator who is troubleshooting DNS issues discovers zone transfers are not occurring between the primary and secondary name servers due to an error in the serial numbers. Which of the following records should the administrator query for the serial number?

APTR

BTXT

CSOA

DSRV

Show Suggested Answer

Suggested Answer: C

SOA stands for Start of Authority, and it is a type of DNS record that contains information about a DNS zone, such as the name of the primary name server, the email address of the zone administrator, the serial number of the zone, and other parameters. The serial number is used to indicate when a zone has been updated, and it is incremented by the primary name server whenever a change is made to the zone dat

a. The secondary name servers use the serial number to determine if they need to request a zone transfer from the primary name server to synchronize their data.

by Cherry at Nov 13, 2024, 08:49 AM

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Goldie

4 days ago

I'm not sure, but I think querying the PTR record might also provide the serial number.

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Nichelle

5 days ago

I once tried to troubleshoot a DNS issue by querying the TXT records. Needless to say, that didn't go well. Go with the SOA record, it's the way to go!

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