Domain Name System (DNS) Additional Practice Test

12th Standard Computer Applications — Domain Name System (DNS): Additional Online Practice Test

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Who invented the Domain Name System (DNS) along with Jon Postel?

A.Tim Berners-Lee B.Paul V. Mockapetris C.Vint Cerf D.Bob Metcalfe

Which administrator of the Internet Assigned Numbers Authority (IANA) was famously known as the "God of the Internet"?

A.Paul V. Mockapetris B.Jon Postel C.Vint Cerf D.Robert E. Kahn

Internet Protocol (IP) address is the logical address of which network layer?

A.Application Layer B.Transport Layer C.Network Layer D.Physical Layer

If a protocol uses 'n' bits for addressing, what is the total address space of that protocol?

A.n^2 B.2 * n C.2^n D.n^2 - 1

What is the total number of unique addresses that can be formed using the 32-bit IPv4 protocol?

A.2^64 B.2^128 C.2^32 D.2^16

In an IPv6 address, the 128 bits are divided into how many 16-bit blocks?

A.Four B.Six C.Eight D.Ten

A standard Uniform Resource Locator (URL) consists of how many fundamental parts?

A.Two B.Three C.Four D.Five

What is the major disadvantage of using a flat namespace in large network systems?

A.It cannot support alphabetical characters. B.It must be controlled centrally to avoid ambiguity and redundancy. C.It requires more bits than a hierarchical namespace. D.It cannot map names to IP addresses.

The hierarchical domain name space tree structure can have a maximum of how many levels starting from the root?

A.63 levels B.128 levels C.253 levels D.256 levels

Q10

What level number represents the root element in the Domain Name Space tree structure?

A.Level 0 B.Level 1 C.Level 127 D.Level 128

Q11

According to the basic rules of domain names, the entire domain name can be at most how many characters long?

A.63 characters B.128 characters C.253 characters D.255 characters

Q12

Which of the following symbols is permitted in a domain name according to DNS rules?

A.Underscore (_) B.Hyphen (-) C.Dollar sign ($) D.Exclamation mark (!)

Q13

Country top-level domain names (cTLD) use how many characters to represent a country's abbreviation?

A.Two characters B.Three characters C.Four characters D.Variable length

Q14

In Generic Top-Level Domains (gTLD), what is the specific usage associated with the ".info" domain extension?

A.Networking organizations B.Information service providers C.Military groups D.Commercial organizations

Q15

Which type of name server contains a zone's resource records that are directly updatable by the domain name holders?

A.Root Name Server B.Secondary Name Server C.Primary Name Server D.Local Name Server

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About this Domain Name System (DNS) test

This free online practice test covers Domain Name System (DNS) from the 12th Standard Computer Applications (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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