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Name servers - Quiz

Each question is worth one point. Select the best answer or answers for each question.
 
1. What is a name server?
Please select the best answer.
  A. A branch of the DNS namespace under the administrative control of the sending entity
  B. A process that accepts queries into the DNS database or a computer on which this process runs
  C. A process that converts MAC addresses into IP addresses and vice versa
  D. A subdomain that contains all hosts belonging to organizations of particular types

2. How many primary name servers does a zone require?
Please select the best answer.
  A. 2
  B. 5
  C. 1
  D. 3

3. What does a secondary server do?
Please select all the correct answers.
  A. Provides an alternative source for information on the zone, allows load distribution, and provides backup
  B. Accepts queries from the DNS database and binds to TCP port 153 to listen for incoming queries
  C. Converts MAC addresses into host names and vice versa
  D. Uses zone file transfer to periodically obtain data from the primary server