What is the purpose of a glue record in a zone delegation?

To prevent unauthorized zone transfers

To bind the zone to a specific network interface

To provide the IP address of a name server that is inside the delegated zone

To specify the mail server for the delegated zone

An administrator has configured dynamic updates for the zone example.com using a TSIG key. The DHCP server successfully updates A records, but PTR records in the reverse zone are not being updated. What is the most likely cause?

The DHCP server is not sending PTR updates.

The reverse zone does not have the same TSIG key configured for updates.

The A record's TTL is too short.

The reverse zone's serial number is not incremented.

An administrator has made several changes to the zone file for example.com, including adding new A records and updating the SOA serial. Before reloading the zone, which command should be run to check the zone file for syntax errors?

named-checkconf /etc/named/zones/db.example.com

named-checkzone example.com /etc/named/zones/db.example.com

A secondary DNS server for example.com has been down for 5 days. The primary's SOA record has a refresh of 3600, retry of 600, and expire of 604800. After the secondary comes back online, what will happen?

It will discard its zone data because the expire time has passed.

It will request a zone transfer after the refresh interval, and if that fails, it will retry every 600 seconds.

It will wait for the primary to send a NOTIFY message.

It will immediately request a zone transfer because it was down.

LPI LPIC-2:Linux Engineer (201-450)

Domain 8Objective 2

207.2 Create and Maintain DNS Zones (weight: 3) LPIC-2 Practice Questions (Page 3)

Part of the Topic 207: Domain Name Server domain, which makes up ~8% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~3–5 in this domain), expect 1–2 from this objective — we provide 27 practice questions to prepare you well beyond it. (estimate)

27questions here

6free pages

7concepts

Questions 11–15

11foundation · easy
What is the purpose of a glue record in a zone delegation?
Select an answer first
12expert · hard
An administrator has configured dynamic updates for the zone example.com using a TSIG key. The DHCP server successfully updates A records, but PTR records in the reverse zone are not being updated. What is the most likely cause?
Select an answer first
13application · medium
An administrator has made several changes to the zone file for example.com, including adding new A records and updating the SOA serial. Before reloading the zone, which command should be run to check the zone file for syntax errors?
Select an answer first
14foundation · easy
Which DNS resource record type is used to specify the mail server responsible for accepting email for a domain?
Select an answer first
15application · medium
A secondary DNS server for example.com has been down for 5 days. The primary's SOA record has a refresh of 3600, retry of 600, and expire of 604800. After the secondary comes back online, what will happen?
Select an answer first

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