Ch 10
When a dynamic DNS record is created, what is the TTL value used for?
To specify how long the record should remain in the DNS database
T/F A zone that is not integrated into Active Directory is referred to as a standard zone, and the zone data is stored in a text file.
True
T/F DNS recursion is enabled on Windows DNS servers by default.
True
T/F DNS servers maintain a database of information that contains zones.
True
T/F The MX record type is used to designate mail exchangers, or mail servers for e-mail.
True
How should an administrator test the functionality of DNS operation on a domain controller, as well as troubleshoot issues with DNS forwarders, delegation, dynamic updates, and record registration?
Using dcdiag /test:dns
What type of DNS query causes a DNS server to respond with the best information it currently has in its local database?
Iterative query
In a zone's Properties dialog box, what option is unavailable under Dynamic updates for only standard zones?
The Secure only option
.com, .net, and .edu are all examples of what level of the DNS naming hierarchy?
Top-level domain names
Text files containing standard zone information in Windows utilize what file naming convention?
zone-name.dns
Who is responsible for the management of the Internet root servers?
Internet Assigned Numbers Authority (IANA)
The hosts file is contained within what directory in Windows?
%systemroot%\System32\drivers\etc
What command option for the dnscmd command lists all zones on the server?
/enumzones
The default setting for a secondary zone's refresh interval is how many minutes?
15 minutes
What DNS record type is used for an IPv6 host record?
AAAA
Select the PowerShell cmdlet that can be used to create a new Active Directory integrated primary zone:
Add-DnsServerPrimaryZone
What type of DNS record is used to contain an alias for another record, allowing for the use of different names for the same host?
CNAME record
Which of the following options can an administrator enable to improve DNS security?
Do not allow dynamic updates
T/F The use of WINS forward lookup is enabled by default.
False
Of the three different zone types, what type of zone contains a read/write master copy of all resource records for the zone?
Primary zone
What RFC defines the DNS resource record types?
RFC 1183
When data within a zone changes, what information in the SOA record changes to reflect that the zone information should be replicated?
Serial number
The responsible person section of an SOA record contains what information?
The e-mail address of the responsible person
Which Windows command line utility below can be used to check for resource records on a server, verify delegations, verify resource records needed for AD replication, and perform e-mail connectivity tests?
dnslint
A valid reverse lookup zone consists of the network ID's octets in reverse order, with what at the end of the name?
in-addr.arpa