When delegating a subdomain to another set of name servers, which two types of records are required in the parent zone?

NS records and glue (A or AAAA) records for the delegated name servers

What is the purpose of TSIG (Transaction Signature) in the context of dynamic DNS updates?

To authenticate and secure the update requests

To compress the zone file to save space

To convert IPv4 addresses to IPv6

To speed up the zone transfer process

An administrator has configured dynamic updates for the zone example.com with an update-policy that grants the DHCP server's key permission to update only A records. The DHCP server also needs to update PTR records in the reverse zone. What is the best approach?

Configure the DHCP server to send PTR updates to the forward zone.

Use allow-update instead of update-policy in the forward zone.

Add a similar update-policy to the reverse zone granting the same key permission for PTR records.

Modify the existing update-policy to also allow PTR records in the forward zone.

A secondary DNS server for example.com is not receiving zone updates after the primary's serial number was incremented. The primary's zone file contains 'allow-transfer { 192.0.2.53; };'. The secondary's IP is 192.0.2.54. What is the most likely cause?

The serial number was incremented too much.

The primary's SOA refresh interval is too long.

The secondary's IP is not in the allow-transfer list.

The secondary's zone file is read-only.

After editing a zone file, what must be done to make the changes take effect on a running BIND server?

Reload the zone or restart the named service

Wait for the refresh interval to expire

Run nsupdate to apply the changes

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

Domain 8Objective 2

207.2 Create and Maintain DNS Zones (weight: 3) LPIC-2 Practice Questions (Page 5)

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 21–25

21foundation · easy
When delegating a subdomain to another set of name servers, which two types of records are required in the parent zone?
Select an answer first
22foundation · easy
What is the purpose of TSIG (Transaction Signature) in the context of dynamic DNS updates?
Select an answer first
23expert · hard
An administrator has configured dynamic updates for the zone example.com with an update-policy that grants the DHCP server's key permission to update only A records. The DHCP server also needs to update PTR records in the reverse zone. What is the best approach?
Select an answer first
24application · medium
A secondary DNS server for example.com is not receiving zone updates after the primary's serial number was incremented. The primary's zone file contains 'allow-transfer { 192.0.2.53; };'. The secondary's IP is 192.0.2.54. What is the most likely cause?
Select an answer first
25foundation · easy
After editing a zone file, what must be done to make the changes take effect on a running BIND server?
Select an answer first

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