Under what conditions does a secondary name server request a zone transfer from a primary name server?

Question

Options

• AWhen a primary SOA is higher that a secondary SOA
• BWhen a secondary SOA is higher that a primary SOA
• CWhen a primary name server has had its service restarted
• DWhen a secondary name server has had its service restarted
• EWhen the TTL falls to zero

• A
  81% (25)
• B
  10% (3)
• C
  3% (1)
• D
  6% (2)

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