Computer Network MCQ – DNS – Part 3
Networking MCQs questions with answers to prepare for exams, tests, and certifications. These questions are taken from a real written exam and some parts are taken from an interview. So you will find questions on CCNA, TCP/IP, Protocols, IP addressing issues, OSI model, and more. This MCQ will easily prepare anyone to pass their exam.
1. An authoritative server on a _________.
A domaine
B label
C zone
D None of the above
2. A _______ is a server whose zone consists of the entire tree structure.
A domain server
B root server
C zone server
D None of the above
3. A ________ server loads zone information from data files.
A secondary
B primary
C zone
D None of the above
4. The ________ server loads all information from the primary server.
A primary
B secondary
C zone
D None of the above
5. When the secondary downloads information from the primary, it is called a______ transfer.
A domaine
B zone
C label
D None of the above
Alternatively, you can request a zone transfer yourself via the command line. This is a method to display the entire zone file. This can be done with the dig command:
[root@stackhowto ~]# dig @dns1.server.com domain.com axfr
Zone transfers are automatically triggered when the zone’s serial number is incremented. The zone serial number increments when the zone receives an update.
Zone transfers can be full or incremental. Full zone transfers are called AXFR (Asynchronous Full Transfer) or (Authoritative Full Transfer), while incremental zone transfers are IXFR (incremental transfer).
With a full transfer, the entire zone file is copied from the secondary to the primary server. Obviously, this can use a lot of bandwidth if the zone is large.
An incremental field transfer means that only changed records (added, deleted or modified) are sent.
Modern DNS servers will prefer IXFR over AXFR. You can perform these operations manually from the secondary server to update the zone. The commands you need to perform depend on the type of DNS server you are running.
6. On the Internet, the domain name space (tree) is divided into _______ different sections:
A three
B two
C four
D five
Generic domains
National domains
Reversed domain
7. The ________ domain section uses two-character country abbreviations.
A generic
B national
C reversed
D None of the above
8. The _________ domain is used to associate an address with a domain name.
A generic
B national
C reversed
D None of the above
9. In ______ resolution, the resolver expects the server to provide the final answer.
A iterative
B recursive
C normal
D None of the above
10. In __________ resolution, the server returns the IP address of the server which it believes can resolve the request.
A iterative
B recursive
C normal
D None of the above
- Peer-to-peer Architecture Advantages and Disadvantages with example
- Computer Network MCQ – IP header & IP fragmentation
- Computer Network MCQ – Physical layer – Part 1
- Computer Network MCQ – Physical layer – Part 2
- Computer Network MCQ – DNS – Part 1
- Computer Network MCQ – DNS – Part 2
- Computer Network MCQ – DNS – Part 3
- Computer Network MCQ – DNS – Part 4
- Computer Network MCQ – Questions and Answers – Part 1
- Computer Network MCQ – Questions and Answers – Part 2
- Computer Network MCQ – Questions and Answers – Part 3
- Computer Network MCQ – Questions and Answers – Part 4
- Computer Network MCQ – Questions and Answers – Part 5
- Computer Network MCQ – Questions and Answers – Part 6
- Computer Network MCQ – Questions and Answers – Part 7
- Computer Network MCQ – Questions and Answers – Part 8
- Computer Network MCQ – Questions and Answers – Part 9
- Computer Network MCQ – Questions and Answers – Part 10
- IP fragmentation – Questions and answers
