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

Questions 6–10

1. 6foundation · easy

   Which command-line utility is commonly used to perform dynamic DNS updates?

   • Ahost
   • Bdig
   • Cnamed-checkzone
   • Dnsupdate
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   In an SOA record, what does the 'negative TTL' field specify?

   • AThe time after which the zone data is considered expired
   • BHow long a resolver should cache a negative response (e.g., NXDOMAIN)
   • CThe minimum TTL for all resource records in the zone
   • DHow long a secondary server waits before retrying a failed zone transfer
   Reveal Solution Discussion Select an answer first
4. 8application · medium

   An administrator updates the SOA record's refresh interval from 3600 to 7200 seconds. After editing the zone file, what additional step is required for the change to take effect on the primary name server?

   • AIncrement the serial number and reload the zone.
   • BDelete the zone's journal file.
   • CRestart the named service.
   • DRun rndc reconfig.
   Reveal Solution Discussion Select an answer first
5. 9expert · hard

   A secondary DNS server for example.com is configured with 'allow-transfer { none; };' in its zone definition. The primary server sends a NOTIFY to the secondary. What will happen?

   • AThe secondary will ignore the NOTIFY and not request a transfer.
   • BThe secondary will request a transfer, but the primary will refuse.
   • CThe secondary will request a transfer and update its zone.
   • DThe secondary will send a NOTIFY back to the primary.
   Reveal Solution Discussion Select an answer first
6. 10foundation · easy

   What is the main advantage of using IXFR instead of AXFR for zone transfers?

   • AIt eliminates the need for a serial number
   • BIt is more secure because it uses encryption
   • CIt transfers only the changes to the zone, reducing bandwidth and load
   • DIt allows the secondary to become the primary
   Reveal Solution Discussion Select an answer first