Deck 9: Configuring DNS for Active Directory

Question 1

What information does a resource record of type MX contain?

A)Name server
B)host
C)State of Authority
D)Address of an e-mail server

Answer 1

D

Question 2

Where are conditional forwarders configured in Windows Server 2008?

A)In the Forwarders tab
B)Conditional Forwarders node in DNS Manager
C)Command line only
D)Forwarders node in DNS Manager

Answer 2

B

Question 3

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

A)contains records to translate names to IP addresses
B)contains PTR records that map IP addresses to names
C)will be autoconfigured by DHCP
D)can be updated automatically

Answer 3

A

Question 4

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

A)/ZoneCreate
B)/Zone -a
C)/ZoneAdd
D)/Zone Add

Question 5

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

A)serial number
B)retry interval
C)responsible person
D)maximum TTL

Question 6

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

Question 7

By default,stale resource scavenging is enabled.

Question 8

A recursive query is...

A)A type of DNS query to which a DNS server responds with the best information it has to satisfy the query.The DNS server doesn't query additional DNS servers in an attempt to resolve the query.
B)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.
C)A process whereby the DNS server checks the zone file for stale records periodically and deletes those meeting the criteria for a stale record.
D)A grouping of DNS information that represents one or more domains and possibly subdomains.

Question 9

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

A)7 hours
B)7 days
C)7 weeks
D)7 years

Question 10

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?

A)A normal recursive lookup process is initiated,starting with a root server
B)The query fails and the DNS server sends a failure reply to the client
C)The query is then passed to conditional forwarders
D)The query is cached until it can be resolved

Question 11

Using a stub zone can result in faster recursive queries.

Question 12

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

A)Domain names to IP addresses
B)Bootp names
C)MAC addresses to IP addresses
D)NetBIOS names

Question 13

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.
What is most likely the issue?

A)AppSrv1 has a static route entry to DBSrv1
B)nslookup was pulling from the correct DNS server,but the computer is configured with the wrong DNS server
C)A conditional forward zone has not been set up properly
D)Someone added a static entry for DBSrv1 in the hosts text file,which is now outdated

Question 14

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

Question 15

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.

Question 16

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.
What could you do instead of using conditional forwarders and still achieve the same functionality,while simultaneously allowing this process to be handled by Active Directory?

A)Use a conditional forwarder,but make sure that "replicate forwarder information" option is checked
B)Use a stub zone
C)Create a secondary zone
D)Add IP address of the conditional forwarder server to a hosts file,and place it in the Sysvol folder

Question 17

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.

A)The server can do zone transfers for stub zones
B)The AD-integrated domain DNS zones will be created automatically.
C)Active Directory integrated secondary zones would be possible
D)Resource consolidation

Question 18

When might you use a forwarder?

A)When an internal DNS server receives queries to resolve domain names on the Internet
B)When querying for a computer name on the local network
C)When making use of a server that caches the results of DNS queries
D)Only when a DNS server is unreachable

Question 19

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?

A)A forwarder
B)Caching-only DNS server
C)Conditional Forwarder
D)Can't be done

Question 20

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

A)Host
B)Name Server
C)State of Authority
D)IPv6 host

Question 21

MATCHING
a.authoritative server
f.resolver
b.conditional forwarder
g.root servers
c.forwarder
h.root hints
d.glue A record
i.recursive query
e.iterative query
A type of DNS query to which a DNS server responds with the best information it has to satisfy the query

Question 22

An NS record technically consists of just the name server's FQDN,but this by itself is not useful unless there is an associated ____________________,which if possible,is created automatically in DNS manager by a DNS lookup on the NS record's FQDN.

Question 23

What does round robin do?

A)Allows an administrator to configure multiple routes that user must make "rounds" through in order to reach a service,improving security
B)Causes network performance issues by continuously rotating the IP addresses associated with services
C)Creates invalid DNS records by disabling DNS timestamp scavenging
D)Creates a load sharing / balancing mechanism for servers that have identical services,such as two servers that host the same website

Question 24

MATCHING
a.authoritative server
f.resolver
b.conditional forwarder
g.root servers
c.forwarder
h.root hints
d.glue A record
i.recursive query
e.iterative query
DNS servers that keep a database of addresses of other DNS servers managing top-level domain names

Question 25

A ____________________ is a primary,secondary,or stub zone that isn't Active Directory integrated.

Question 26

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

A)Queries/Transfers
B)Updates
C)Notifications
D)Outgoing

Question 27

MATCHING
a.authoritative server
f.resolver
b.conditional forwarder
g.root servers
c.forwarder
h.root hints
d.glue A record
i.recursive query
e.iterative query
A list of name servers preconfigured on Windows DNS servers that point to Internet root servers

Question 28

MATCHING
a.authoritative server
f.resolver
b.conditional forwarder
g.root servers
c.forwarder
h.root hints
d.glue A record
i.recursive query
e.iterative query
A DNS client that sends a recursive query to a DNS server

Question 29

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?

A)nslookup
B)ipconfig
C)dnslint
D)dnscmd

Question 30

Root hints data comes from what file?

A)dns.root
B)root.hints
C)Cache.dns
D)root.cache

Question 31

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

A)/all
B)/flushdns
C)/showhosts
D)/displaydns

Question 32

MATCHING
a.authoritative server
f.resolver
b.conditional forwarder
g.root servers
c.forwarder
h.root hints
d.glue A record
i.recursive query
e.iterative query
A DNS server that holds a complete copy of a zone's resource records

Question 33

A ____________________ is an operation that copies all or part of a zone from one DNS server to another and occurs as a result of a secondary server requesting the transfer from another server.

Question 34

MATCHING
a.authoritative server
f.resolver
b.conditional forwarder
g.root servers
c.forwarder
h.root hints
d.glue A record
i.recursive query
e.iterative query
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

Question 35

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 records
4)From the DNS cache
5)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?

A)Switch #2 with #1
B)Switch #4 with #5
C)Switch #3 with #4
D)Switch #5 with #3

Question 36

Zone transfers can be initiated in two ways: Refresh interval and ____________________.

Question 37

MATCHING
a.authoritative server
f.resolver
b.conditional forwarder
g.root servers
c.forwarder
h.root hints
d.glue A record
i.recursive query
e.iterative query
A DNS server to which other DNS servers send requests targeted for a specific domain

Question 38

MATCHING
a.authoritative server
f.resolver
b.conditional forwarder
g.root servers
c.forwarder
h.root hints
d.glue A record
i.recursive query
e.iterative query
An A record used to resolve the name in an NS record to its IP address

Question 39

MATCHING
a.authoritative server
f.resolver
b.conditional forwarder
g.root servers
c.forwarder
h.root hints
d.glue A record
i.recursive query
e.iterative query
A DNS server to which other DNS servers send requests they can't resolve themselves

Question 40

A ____________________ zone is a DNS zone containing a read/write master copy of all resource records for the zone;this zone is authoritative for the zone.

Question 41

What term best matches the following description:
A grouping of DNS information that represents one or more domains and possibly subdomains.

Question 42

What term best matches the following description?
A DNS zone containing a read-only copy of only the zone's SOA and NS records and the necessary A records to resolve NS records.

Question 43

What term best matches the following description:
A process whereby the DNS server checks the zone file for stale records periodically and deletes those meeting the criteria for a stale record

Question 44

What term best matches the following description?
A DNS zone containing a read-only copy of all resource records for the zone.

Question 45

This DNS resource record type is used for reverse DNS lookups.

Question 46

What switch,when added to the dnscmd.exe command,displays server information?

Question 47

What command can be used to check for resource records on a server,verify delegations,verify resource records needed for Active Directory replication,and perform e-mail connectivity tests?

Question 48

What term best matches the following description:
A DNS name-registering process whereby computers in the domain can register or update their own DNS records.

Question 49

This DNS resource record type is a record that contains an alias for another record and enables you to refer to the same resource with different names yet maintain only one host record.

Question 50

What option can be added to the ipconfig command to delete the local DNS cache?