Cnt Ch 9

Front 1

A DNS server that holds a complete copy of a zone's resource records

Back 1

authoritative server

Front 2

DNS servers that keep a database of addresses of other DNS servers managing top-level domain names

Back 2

root servers

Front 3

An A record used to resolve the name in an NS record to its IP address

Back 3

glue A record

Front 4

servers preconfigured on Windows DNS servers that point to Internet root servers

Back 4

root hints

Front 5

A DNS server to which other DNS servers send requests they can't resolve themselves

Back 5

forwarder

Front 6

A DNS server to which other DNS servers send requests targeted for a specific domain

Back 6

conditional forwarder

Front 7

A query in which the DNS server processes the query until it responds with an address that satisfies the query or with an "I don't know" message

Back 7

recursive query

Front 8

A DNS client that sends a recursive query to a DNS server

Back 8

resolver

Front 9

A type of DNS query to which a DNS server responds with the best information it has to satisfy the query

Back 9

iterative query

Front 10

A recursive query is...

Back 10

A query in which the DNS server processes the query until it responds with an address that satisfies the query or with an "I don't know" message. The process might require the DNS server to query several additional DNS servers.

Front 11

For several hours now, your IT staff has been trying to troubleshoot an issue on AppSrv1. AppSrv1 uses an application that requires it to access an SQL database on a server named DBSrv1 but recent changes in the network topology have outdated previous DNS entries. Initially, the problem is believed related to the DNS database, but after using nslookup, you find that the DNS entry is correct. AppSrv1 can reach the DBSrv1 server manually by IP address, but when using a name, it resolves to the wrong machine.

Back 11

Someone added a static entry for DBSrv1 in the hosts text file, which is now outdated

Front 12

If multiple servers are specified in the forwarders tab of a server's Properties, what happens if a query is made and none of the forwarders provide a response?

Back 12

A normal recursive lookup process is initiated, starting with a root server

Front 13

Increased network usage has inspired your staff to install a new DNS server. After much consideration, you have decided to also make the new server a domain controller as well. One of your interns is curious as to what benefit this would provide to DNS over simply making the DNS server a member server.

Back 13

The AD-integrated domain DNS zones will be created automatically

Front 14

Last year you configured a conditional forwarder for a specific domain on your network. This year, after several major changes to the network, you notice that the conditional forwarder is no longer reachable. You find out that the conditional forwarder's address changed, and now to continue using a conditional forwarder, you must manually change the IP address on all servers that use it.

Back 14

Use a stub zone

Front 15

Root hints data comes from what file?

Back 15

Cache.dns

Front 16

What does round robin do?

Back 16

Creates a load sharing / balancing mechanism for servers that have identical services, such as two servers that host the same website

Front 17

What information does a resource record of type MX contain?

Back 17

Address of an e-mail server

Front 18

What ipconfig option will display the contents of the hosts file, as well as the local DNS cache?

Back 18

/displaydns

Front 19

What is the default no-refresh interval set to on DNS record timestamps?

Back 19

7 days

Front 20

What type of information does a resource record of type A contain?

Back 20

Host

Front 21

When might you use a forwarder?

Back 21

When an internal DNS server receives queries to resolve domain names on the Internet

Front 22

Where are conditional forwarders configured in Windows Server 2008?

Back 22

Conditional forwarders node in DNS Manager

Front 23

Which of the commands below can be used to test DNS queries with the default DNS server or a specific DNS server on a Windows computer?

Back 23

nslookup

Front 24

Which of the following is not a valid option when configuring packet contents to be logged in the Debug Logging tab?

Back 24

Outgoing

Front 25

Which of the following is not part of a State of Authority record?

Back 25

maximum TTL

Front 26

Which one of the following options, when added to dnscmd.exe, will allow you to create a new zone?

Back 26

/ZoneAdd

Front 27

Windows Internet Name Service (WINS) is a legacy name service used to resolve....

Back 27

NetBIOS names

Front 28

With forwarders and/or conditional forwarders configured, the DNS server attempts to resolve DNS queries in this order:1. From traditional forwarders (if configured)2. From conditional forwarders (if configured and the domain name matches)3. From locally stored zone resource records4. From the DNS cache5. Recursively by using root hints (only if no traditional forwarder is configured)This list has been slightly rearranged. What entry number should be switched in order to make this list accurate?

Back 28

Switch #3 with #4

Front 29

You have recently set up a new domain controller and DNS server responsible for a large network. Almost immediately, you notice that every time a user attempts to make use of a resource on a server in your partner organization's domain, Example.net, DNS requests end up performing a recursive query. Rather than continue to allow DNS requests to be processed this way, you would like to make use of a DNS server in Example.net's domain that you have access to via a LAN connection.What can you configure to have the DNS server in Example.net's domain receive DNS queries from your network, but only ones that are related to Example.net's domain?

Back 29

Conditional Forwarder

Front 30

You will want to use a forward lookup zone when you need a zone that...

Back 30

contains records to translate names to IP addresses

Front 31

By default, stale resource scavenging is enabled.

Back 31

False

Front 32

Glue A records will also appear as an A record in the zone database.

Back 32

False

Front 33

If all zones are hosted on Windows domain controllers and are Active Directory integrated, there's no need to configure zone transfers because Active Directory replication handles this process.

Back 33

True

Front 34

Using a stub zone can result in faster recursive queries.

Back 34

True

Front 35

When DNS is installed on a new domain controller, AD-integrated zones are replicated to the new DNS server automatically.

Back 35

True