DNS Interview/Exam Question-Answer

Q.1 A DNS client is called _________.

       A. DNS updater

       B. DNS

       C. DNS handler

       D. DNS resolver

Ans : DNS resolver

Q.2 Which one of the following allows client to update their DNS entry as their IP address change?

       A. mail transfer agent

       B. Dynamic DNS

       A. None of the options

       B. Authoritative name server

Ans : Dynamic DNS

Q.3 The entire hostname has a maximum of ___________.

       A. 127characters

       B. 25 characters

       A. 255 characters

       B. 0 characters

Ans : 255 characters

Q.4 The Domain Name System support in Microsoft Windows NT, and thus its derivatives ________, Windows XP, and Windows Server 2003, comprises two clients and a server.

       A. Windows Server 2008

       B. Windows 2000

       C. Windows Vista

       D. Internet Explorer

Ans : Windows 2000

Q.5 DNS database contains _______.

       A. hostname aliases

       B. name server records

       C. hostname-to-address records

       D. All of the above

Ans : All of the above

Q.6 The right to use a domain name is delegated by domain name registers which are accredited by _______.

       A. Internet architecture board

       B. Internet research task force

       A. Internet society

       B. Internet corporation for assigned names and numbers

Ans : Internet corporation for assigned names and numbers

Q.7 Servers handle requests for other domains _______.

       A. by contacting remote DNS server

       B. directly

       C. it is not possible

       D. None of the above

Ans : by contacting remote DNS server

Q.8 Prior to ________ and Microsoft Windows 2000 Service Pack 3, the most common problem encountered with Microsoft’s DNS server was cache pollution.

       A. Windows XP

       B. Windows Vista

       C. Windows Server 2003

       D. Windows Server 2008

Ans : Windows Server 2003

Q.9 If a server has no clue about where to find the address for a hostname then _______.

       A. server asks to the root server

       B. server asks to its adjcent server

       C. request is not processed

       D. None of the above

Ans : server asks to the root server

Q.10 Microsoft DNS is the name given to the implementation of domain name system services provided in ________ operating systems.

       A. Internet Explorer

       B. Internet Information Services

       C. Microsoft Windows

       D. DirectX

Ans : Microsoft Windows

Q.11 Wildcard domain names start with label _______.

       A. *

       B. @

       C. &

       D. #

Ans : *

Q.12 What are the 3 types of IPv6 addresses?

       A. in the Start of Authority (SOA) record

       B. link-local, site-local, and global unicast

       C. dynamic, read-write, and read-only

       D. older applications that are unable to use FQDN’s

Ans : link-local, site-local, and global unicast

Q.13 What is an alias record used for?

       A. Creating an alternate record or alias for an existing record

       B. A routable internal address (similar to the 192.168 address space)

       C. in an unsecured location facing the internet

       D. when you have a large number of single-name clients to support

Ans : Creating an alternate record or alias for an existing record

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