Domain Name System

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Domain Name System

Online Test

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1. DNS can be pictured as an inverted hierarchical tree structure with one root node at top and a maximum of

128 Levels

127 Levels

129 Levels

130 Levels

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2. Domain, which is used to map an address to a name is called

Generic Domains

Inverse Domain

Main Domains

Sub-Domains

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3. Term that defines registered hosts according to their generic behaviour, is called

Generic Domains

Main Domains

Super-Domains

Sub-Domains

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4.The well-known port used for encapsulation by the server is

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5.Each node in tree has a

Primary Name

Domain name.

DNS tree

All of the above

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6. Two types of records are used in DNS those are

Question Record

Answers Record

Resource Record

Both A and C

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7. In Domain Name, a full domain name always ends up at

1 Node

2 Nodes

0 Node

Null Node

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8. In Domain Name System (DNS), well-known port 53 provides services of

UDP

TCP

ICMP

Both A & B

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9.New domains can be added to DNS through a

Query

Registrar

Domain

Response

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10.FQDN stands for

Filled Quality Domain Name

False Quality Domain Name

Fully Qualified Domain Name

First Qualified Domain Name

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11. cn.antosh.in. is a

PQDN

FQDN

DDNS

All of them

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12. Country domains section uses two-character country

Generations

Abbreviations

Notations

Zones

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13. A registrar first verifies that requested domain name is unique and then enters it into DNS

Database

Servers

Domains

Protocol

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14. In Domain Name System (DNS), a contiguous part of entire tree is called

Host

Server

Domain

Zone

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15. A root server's zone is entire

STP Tree

DNS Tree

HostTree

Sub-Tree

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16. Domain Name System (DNS), allows domains to be divided further into

Large-Domains

Down-Domains

Super-Domains

Sub-Domains

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17. Mapping a name to an address or an address to a name is called

Name-address Generations

Name-address Abbreviations

Name-address Resolution

Name-address Information

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18. In DNS meaagaes a section consisting of one or more resource records is called

Question Section

Template Section

Resource Section

Answer Section

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19. A primary server loads all information from the

IP File

Disk File

Host File

Host Server

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20. In Domain Name Space (DNS), when Internet was small, mapping was done by using

IP File

Host File

Host IP

Host Server

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21. In Domain Name Space, if a label is not terminated by a null string, it is called a

Partially Qualified Domain Name

Partially Qualified Domain Node

Partially Qualified Data Node

Partially Qualified Data Name

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22. Main disadvantage of a flat name space is that it cannot be used in a large

Protocol Domain

Internet

System

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23. A root server is a server whose zone consists of the

Subdomains

Zone Files

Whole tree

DNS servers

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24. In Domain Name, a full domain name is a sequence of labels separated by

Dots

Colons

Semicolons

Question marks

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25. Domain names are always read from the

Node up to the root

Node down to the leaf

Root to Child

All of them

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26. A root server usually does not store any information about domains but delegates its authority to the

Main Server

Sub Server

Other Server

Host Server

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27. A domain name "hello.customer.info." Is

City domain

Generic domain

Country domain

Sub-domain

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28. If size of response message is more than 512 bytes, a Connection is used called

DNS connection

ICMP connection

STMP connection

TCP connection

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29. Domain Name System (DNS), has two types of messages

Query and Resolver

Hosted and Generic

Query and Responsive

Resolver and Informative

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30. In Domain Name System (DNS) meassages, length of header is

08 Bytes

12 Bytes

14 Bytes

24 Bytes

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31. First address part of Hierarchical Narne Space can define the

Name of an organization

Nature of the organization

Departments in the organization

DataType

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32. DNS clients are known as

Nodes

Resolvers

Sub-Domain

Participator

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

Primary

Secondary

zone

Backup

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34. DNS user ____________ technique to speed up the resoltuion

Recursive

Iterative

Caching

Proxy

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

Nameserver

Zone

Domain

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