In this section of Data Communication and Networking – Domain Name System MCQ (Multiple Choice) Based Questions and Answers,it cover the below lists of topics.All the Multiple Choice Questions and Answers (MCQs) have been compiled from the book of Data Communication and Networking by The well known author behrouz forouzan.
This Section covers below lists of topics.
- DNS client MCQs.
- recursive resolution MCQs.
- iterative resolution MCQs.
- fully qualified doman name (FQDN) MCQs.
- partially qualified domain name (PQDN) MCQs.
- DNS messages MCQs
- DNS records MCQs
- Dynamic DNS (DDNS) MCQs
PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE
1. What a server is responsible for or has authority over is called a _________.
- domain
- label
- zone
- none of the above
C. zone
2. A _______ is a server whose zone consists of the whole tree.
- domain server
- zone server
- root server
- none of the above
C. root server
3. A ________ server loads all information from the disk file
- primary
- secondary
- zone
- none of the above
A. primary
4. A ________ server loads all information from the primary server.
- primary
- secondary
- zone
- none of the above
B. secondary
5. When the secondary downloads information from the primary, it is called ______ transfer
- domain
- zone
- label
- none of the above
B. zone
6. In the Internet, the domain name space (tree) is divided into _______ different sections
- three
- two
- four
- none of the above
A. three
7. The _______ domains define registered hosts according to their generic behavior.
- generic
- country
- inverse
- none of the above
A. generic
8. The first level in the generic domains section allows ______ possible labels
- 10
- 12
- 16
- none of the above
D. none of the above
9. The ____________ domain section uses two-character country abbreviations
- generic
- country
- inverse
- none of the above
B. country
10. The _________ domain is used to map an address to a name.
- generic
- country
- inverse
- none of the above
C. inverse
11. In __________ resolution, the resolver expects the server to supply the final answer
- iterative
- recursive
- straight
- none of the above
B. recursive
12. In __________ resolution, the server returns the IP address of the server that it thinks can resolve the query.
- iterative
- recursive
- straight
- none of the above
A. iterative
13. In the domain name chal.atc.fhda.edu, _______ is the least specific label.
- chal
- atc
- edu
- none of the above
C. edu
14. In the domain name chal.atc.fhda.edu, _______ is the most specific label
- chal
- atc
- fhda
- none of the above
A. chal
15. A host with the domain name pit.arc.nasa.gov. is on the _______ level of the DNS hierarchical tree. (The root is level one.)
- third
- fourth
- fifth
- none of the above
C. fifth
16. A pointer query involves the _______ domain
- inverse
- reverse
- root
- none of the above
A. inverse
17. DNS can use the services of ________ using the well-known port 53.
- UDP
- TCP
- either (a) or (b)
- none of the above
C. either (a) or (b)
18. In a _______ name space, a name is assigned to an address. A name in this space is a sequence of characters without structure.
- flat
- hierarchical
- organized
- none of the above
A. flat
19. In a _________name space, each name is made of several parts.
- flat
- hierarchical
- organized
- none of the above
B. hierarchical
20. To have a hierarchical name space, a ______________ was designed.
- domain space
- domain name
- domain name space
- none of the above
C. domain name space
21. In the DNS, the names are defined in ___________ structure
- a linear list
- an inverted-tree
- a graph
- none of the above
B. an inverted-tree
22. Each node in the tree has a _______, which is a string with a maximum of ___ characters.
- label; 127
- name; 255
- label; 63
- none of the above
C. label; 63
23. The root of the DNS tree is _______.
- a string of characters
- a string of 63 characters
- an empty string
- none of the above
C. an empty string
24. A full domain name is a sequence of labels separated by ________.
- semicolons
- dots
- colons
- none of the above
B. dots
25. If a label is terminated by a null string, it is called a __________.
- PQDN
- FQDN
- SQDN
- none of the above
B. FQDN
26. If a label is not terminated by a null string, it is called a __________.
- PQDN
- FQDN
- SQDN
- none of the above
A. PQDN
27. A _________ is a subtree of the domain name space.
- label
- name
- domain
- none of the above
C. domain
