Forouzan: MCQ in Domain Name System

(Last Updated On: April 22, 2018)
MCQ for Domain Name System
This is the MCQ in Domain Name System from book the Data Communications and Networking 4th Edition by Behrouz A. Forouzan. If you are looking for a reviewer in datacom, topic in Electronics Systems and Technologies (Communications Engineering) this will definitely help you before taking the Board Exam.

Begin and Good luck!

Choose the letter of the best answer in each questions.

1. A full domain name is a sequence of labels separated by ________.

A) semicolons

B) dots

C) colons

D) none of the above

View Answer:

Answer: Option B

Solution:

2. A ________ server loads all information from the primary server.

A) primary

B) secondary

C) zone

D) none of the above

View Answer:

Answer: Option B

Solution:

3. The first level in the generic domains section allows ______ possible labels.

A) 10

B) 12

C) 16

D) none of the above

View Answer:

Answer: Option D

Solution:

4. If a label is not terminated by a null string, it is called a __________.

A) PQDN

B) FQDN

C) SQDN

D) none of the above

View Answer:

Answer: Option A

Solution:

5. What a server is responsible for or has authority over is called a _________.

A) domain

B) label

C) zone

D) none of the above

View Answer:

Answer: Option C

Solution:

6. DNS can use the services of ________ using the well-known port 53.

A) UDP

B) TCP

C) either (a) or (b)

D) none of the above

View Answer:

Answer: Option C

Solution:

7. In the domain name chal.atc.fhda.edu, _______ is the most specific label.

A) chal

B) atc

C) fhda

D) none of the above

View Answer:

Answer: Option A

Solution:

8. The root of the DNS tree is _______.

A) a string of characters

B) a string of 63 characters

C) an empty string

D) none of the above

View Answer:

Answer: Option C

Solution:

9. When the secondary downloads information from the primary, it is called ______ transfer.

A) domain

B) zone

C) label

D) none of the above

View Answer:

Answer: Option B

Solution:

10. A _______ is a server whose zone consists of the whole tree.

A) domain server

B) zone server

C) root server

D) none of the above

View Answer:

Answer: Option C

Solution:

11. A pointer query involves the _______ domain.

A) inverse

B) reverse

C) root

D) none of the above

View Answer:

Answer: Option A

Solution:

12. Each node in the tree has a _______, which is a string with a maximum of ___ characters.

A) label; 127

B) name; 255

C) label; 63

D) none of the above

View Answer:

Answer: Option C

Solution:

13. To have a hierarchical name space, a ______________ was designed.

A) domain space

B) domain name

C) domain name space

D) none of the above

View Answer:

Answer: Option C

Solution:

14. The _______ domains define registered hosts according to their generic behavior.

A) generic

B) country

C) inverse

D) none of the above

View Answer:

Answer: Option A

Solution:

15. In a _________name space, each name is made of several parts.

A) flat

B) hierarchical

C) organized

D) none of the above

View Answer:

Answer: Option B

Solution:

16. In a _______ name space, a name is assigned to an address. A name in this space is a sequence of characters without structure.

A) flat

B) hierarchical

C) organized

D) Connection-Oriented

View Answer:

Answer: Option A

Solution:

17. The _________ domain is used to map an address to a name.

A) generic

B) country

C) inverse

D) none of the above

View Answer:

Answer: Option C

Solution:

18. The ____________ domain section uses two-character country abbreviations.

A) generic

B) country

C) inverse

D) Bandwidth

View Answer:

Answer: Option B

Solution:

19. A _________ is a subtree of the domain name space.

A) label

B) name

C) domain

D) none of the above

View Answer:

Answer: Option C

Solution:

20. In the DNS, the names are defined in ___________ structure.

A) a linear list

B) an inverted-tree

C) a graph

D) none of the above

View Answer:

Answer: Option B

Solution:

21. If a label is terminated by a null string, it is called a __________.

A) PQDN

B) FQDN

C) SQDN

D) none of the above

View Answer:

Answer: Option B

Solution:

22. In the Internet, the domain name space (tree) is divided into _______ different sections:

A) three

B) two

C) four

D) none of the above

View Answer:

Answer: Option A

Solution:

23. In __________ resolution, the server returns the IP address of the server that it thinks can resolve the query.

A) iterative

B) recursive

C) straight

D) none of the above

View Answer:

Answer: Option A

Solution:

24. In the domain name chal.atc.fhda.edu, _______ is the least specific label.

A) chal

B) atc

C) edu

D) none of the above

View Answer:

Answer: Option C

Solution:

25. A host with the domain name pit.arc.nasa.gov. is on the _______ level of the DNS hierarchical tree. (The root is level one.)

A) third

B) fourth

C) fifth

D) none of the above

View Answer:

Answer: Option C

Solution:

26. In __________ resolution, the resolver expects the server to supply the final answer.

A) iterative

B) recursive

C) straight

D) none of the above

View Answer:

Answer: Option B

Solution:

27. A ________ server loads all information from the disk file.

A) primary

B) secondary

C) zone

D) none of the above

View Answer:

Answer: Option A

Solution:

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