DNS Quiz | DNS Multiple Choice Questions and Answers

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Questions
1 The entire hostname has a maximum of ___________
A 31 characters
B 255 characters
C 127 characters
D None of the above

Answer: 255 characters
2 Which one of the following allows client to update their DNS entry as their IP address change?
A dynamic DNS
B authoritative name server
C mail transfer agent
D None of the above

Answer: dynamic DNS
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3 The right to use a domain name is delegated by domain name registers which are accredited by _______
A internet research task force
B internet corporation for assigned names and numbers
C internet architecture board
D internet society

Answer: internet corporation for assigned names and numbers
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 2000
B Windows Server 2008
C Internet Explorer
D Windows Vista

Answer: Windows 2000
5 Microsoft DNS is the name given to the implementation of domain name system services provided in ________ operating systems.
A Microsoft Windows
B Internet Explorer
C Internet Information Services
D DirectX

Answer: Microsoft Windows
6 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 Server 2008
C Windows Server 2003
D Windows Vista

Answer: Windows Server 2003
7 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

Answer: creating an alternate record or alias for an existing record
8 What are the 3 types of IPv6 addresses?
A link-local, site-local, and global unicast
B dynamic, read-write, and read-only
C in the Start of Authority (SOA) record
D older applications that are unable to use FQDN’s

Answer: link-local, site-local, and global unicast
9 What are the 3 strategies for updating DNS servers?
A dynamic, read-write, and read-only
B the Mail exchanger (MX) record
C a unique, internet-usable IP address
D in a highly-secure environment

Answer: dynamic, read-write, and read-only
10 How are the bits in an IPv6 address organized?
A into 8 16-bit groups
B reverse lookup
C canonical name (CNAME)
D name records

Answer: into 8 16-bit groups
11 What allows PNRP to support service naming?
A the fact that a PNRP name includes potential payloads such as service function
B a referral system that performs lookups based on data known by other systems
C the process that DNS uses to remove records that have become stale
D creating an alternate record or alias for an existing record

Answer: the fact that a PNRP name includes potential payloads such as service function
12 What is used to control DNS data replication scope?
A the Mail exchanger (MX) record
B in the Start of Authority (SOA) record
C application directory partitions
D in a highly-secure environment

Answer: application directory partitions
13 How can PNRP names be protected from spoofing or poisoning?
A with digital signatures
B in a highly-secure environment
C in perimeter networks
D Pointer (PTR) records

Answer: with digital signatures
14 What is the most common record type in DNS?
A dnscmd.exe
B Host (A) records
C name records
D None of the above

Answer: Host (A) records
15 In what format are IPv6 addresses usually displayed?
A in hexidecimal format
B the Mail exchanger (MX) record
C canonical name (CNAME)
D Host (A) records

Answer: in hexidecimal format
16 For what purpose is the BIND root cache file used?
A To prime the name server with the root server’s addresses
B To serve as a configuration file for the name server
C To serve as a zone file for the loopback address
D To provide zone files for authoritative servers

Answer: To prime the name server with the root server’s addresses
17 What is the function of the directory directive in the name server configuration file?
A To establish an initial path for later file references
B To declare the server as a secondary server for a zone
C To declare the server as an authoritative server for a zone
D To establish the origin domain and name of the root cache file

Answer: To establish an initial path for later file references
18 What is the basic function of the nslookup program?
A To look up only SOA records from a company’s database
B To look up only IP addresses in the DNS database
C To look up only domain names in the DNS database
D To probe the DNS database for various types of information

Answer: To probe the DNS database for various types of information
19 What file does the nslookup program use to locate a name server?
A The /etc/resolv.conf file
B The /etc/hosts file
C The /etc/named.boot file
D The /var/log/messages file

Answer: The /etc/resolv.conf file
20 Besides the name server process, what are the other parts of the BIND package?
A The /etc/resolv.conf file
B The name server data files
C The /etc/named.boot file
D The /etc/hosts file

Answer: The name server data files

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