MCQs in Domain Name System

MCQs in Domain Name System from the book Data Communications and Networking 4th Edition by Behrouz A. Forouzan. Reviewer in Electronics Systems and Technologies (Communications Engineering).

MCQs for Domain Name System

This is the MCQs 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 Electronics Systems and Technologies (Communications Engineering) this will definitely help you before taking the Board Exam.

Topic Outline

  • NAME SPACE
  • DOMAIN NAME SPACE
  • DISTRIBUTION OF NAME SPACE
    • Hierarchy of Name Servers
    • Zone
    • Root Server
    • Primary and Secondary Servers
  • DNS IN THE INTERNET
    • Generic Domains
    • Country Domains
    • Inverse Domain
  • RESOLUTION
    • Resolver
    • Mapping Names to Addresses
    • Mapping Address to Names
    • Recursive Resolution
    • Iterative Resolution
    • Caching
  • DNS MESSAGES
  • TYPES OF RECORDS
  • REGISTRARS
  • DYNAMIC DOMAIN NAME SYSTEM (DDNS)
  • ENCAPSULATION

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

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

  • A)            primary
  • B)            secondary
  • C)            zone
  • D)            none of the above

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

  • A)            10
  • B)            12
  • C)            16
  • D)            none of the above

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

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

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

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

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

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

  • A)            domain
  • B)            zone
  • C)            label
  • D)           none of the above

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

11. A pointer query involves the _______ domain.

  • A)             inverse
  • B)             reverse
  • C)             root
  • D)             none of the above

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

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

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

  • A)             generic
  • B)             country
  • C)             inverse
  • D)             none of the above

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

  • A)             flat
  • B)             hierarchical
  • C)             organized
  • D)             none of the above

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

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

  • A)             generic
  • B)             country
  • C)             inverse
  • D)             none of the above

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

  • A)             generic
  • B)             country
  • C)             inverse
  • D)             Bandwidth

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

  • A)             label
  • B)             name
  • C)             domain
  • D)             none of the above

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

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

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

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

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

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

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

  • A)             iterative
  • B)             recursive
  • C)             straight
  • D)             none of the above

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

  • A)             primary
  • B)             secondary
  • C)             zone
  • D)             none of the above

Check your work.

Complete List of Chapter Quiz in Data Communications and Networking

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credit: Behrouz A. Forouzan© 2014 www.PinoyBIX.org

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