DNS Objective Type Questions and Answers

21 A DNS client is called _________

A DNS updater

B DNS resolver

C DNS handler

D None of the above

View Answer

Answer: DNS resolver

22 Servers handle requests for other domains _______

A by contacting remote DNS server

B directly

C it is not possible

D None of the above

View Answer

Answer: by contacting remote DNS server

23 DNS database contains _______

A hostname aliases

B name server records

C hostname-to-address records

D all of the mentioned

View Answer

Answer: all of the mentioned

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

A server asks to the root server

B request is not processed

C server asks to its adjcent server

D none of the mentioned

View Answer

Answer: server asks to the root server

25 Wildcard domain names start with label _______

A *

B #

C @

D &

View Answer

Answer: *

26 The domain name system is maintained by _______

A distributed database system

B a single server

C a single computer

D none of the mentioned

View Answer

Answer: distributed database system

27 Which one of the following is not true?

A multiple hostnames may correspond to a single IP address

B a single hostname may correspond to many IP addresses

C a single hostname may correspond to a single IP address

D none of the mentioned

View Answer

Answer: a single hostname may correspond to a single IP address

28 What is the name of the file, where we define our parent domain, or domain above us (in Linux Ubuntu)?

A /etc/bind/named.conf.options

B /etc/bind/named.conf.local

C /etc/bind/named

D /etc/bind/named.conf

View Answer

Answer: /etc/bind/named.conf.options

29 What is the setting to tell the secondary DNS, that there was a change in primary DNS that has to be updated?

A serial

B expiry

C refresh

D retry

View Answer

Answer: serial

30 When monitoring a DNS server, which type of test sends a query to other name servers for resolution?

A Recursive query

B Forward lookup query

C Simple query

D Iterative query

View Answer

Answer: Recursive query

31 Under which of the following circumstances could you use Windows 98 clients in a dynamic update situation?

A Legacy clients cannot be supported by dynamic update.

B When the Enable Updates For DNS Clients That Do Not Support Dynamic Updates option is enabled on the DHCP server.

C When the Allow Dynamic Updates? option is set to Yes on the DNS server.

D When the Only Secure Updates option is enabled on the DNS server.

View Answer

Answer: Legacy clients cannot be supported by dynamic update.

32 Which of the following elements is required to successfully install and configure DNS?

A Static IP address

B Active Directory

C DHCP

D Windows 2000 clients

View Answer

Answer: Static IP address

33 Which of the following DC resource record types would you look for if trying to troubleshoot workstations not being able to log on to a domain? [Check all correct answers]

A SRV

B CNAME

C A

D MX

View Answer

Answer: SRV

34 As of ________, it was the fourth most popular DNS server (counting BIND version 9 separately from versions 8 and 4) for the publication of DNS data.

A 2004

B 2003

C 2006

D None of the above

View Answer

Answer: 2004

35 DNS data can be stored either in master files (also known as zone files) or in the ________ database itself.

A Active Directory

B DirectX

C Microsoft Windows

D Internet Explorer

View Answer

Answer: Active Directory

36 ________ and various versions of Unix have a generalized name resolver layer.

A Linux distribution

B Linux adoption

C Desktop Linux

D Live USB

View Answer

Answer: Linux distribution

37 Microsoft’s DNS server can be administered using either a graphical user interface, the “DNS Management Console”, or a ________, the dnscmd utility.

A Unix

B Command-line interface

C Windows PowerShell

D Command-line interpreter

View Answer