70-642 Ch3 Config Dns Zone

Front 1

Zones

Back 1

Zones are the databases in which DNS data is stored

Front 2

dnscmd /clearcache

Back 2

clears the server cache;

Front 3

dnscmd /enumdirectorypartitions

Back 3

shows the application directory partitions
available on the local server

Front 4

dnscmd /info

Back 4

provides a basic overview of
the DNS server confguration

Front 5

dcdiag /test:replications

Back 5

Test replication in the AD

Front 6

repadmin /showrepl

Back 6

Show replication partners

Front 7

Primary Zone

Back 7

A primary zone provides original read-write source data that allows the local DNS server to answer DNS queries authoritatively

Front 8

zone is stored in a file instead of Active Directory

Back 8

the primary zone file is named zone_name.dns

located in the %systemroot%\System32\Dns folder on the server.

Front 9

Secondary Zones

Back 9

A secondary zone provides an authoritative, read-only copy of a primary zone or another secondary zone

Front 10

masters

Back 10

The source zones from which secondary zones acquire their information

Front 11

Stub Zones

Back 11

A stub zone is similar to a secondary zone, but it contains only those resource records necessary to identify the authoritative DNS servers for the master zone

keep an updated list of the name servers available in a delegated child zone

Front 12

Advante of the Active Directory Zone

Back 12

data is automatically replicated through Active Directory in a manner determined by the settings
you choose on the Active Directory Zone Replication Scope page

Front 13

standard zone stores

Back 13

a standard zone stores its data in a text
fle on the local DNS server

Front 14

forward lookup

Back 14

In forward lookup zones, DNS servers map fully qualifed domain names (FQDNs) to
IP addresses.

Front 15

What are the server requirements for storing a zone in Active Directory?

Back 15

The DNS server needs to be a domain controller

Front 16

When you create a new zone, two types of records required for the zone

Back 16

Start of Authority (SOA)

NS record signifying the name
of the server or servers authoritative for the zone.

Front 17

Start of Authority (SOA) Records

Back 17

When a DNS server loads a zone, it uses the SOA resource record to determine basic and
authoritative properties for the zone. These settings also determine how often zone transfers

Front 18

The Serial Number text box on the Start Of Authority

Back 18

This number increases each time a resource
record changes

Front 19

SOA query

Back 19

the secondary servers query the master server intermittently for the serial number of the
zone.

Front 20

Refresh Interval

Back 20

The value you confgure in the Refresh Interval text box determines
how long a secondary DNS server waits before querying the master server for a zone
renewal

Front 21

Retry Interval

Back 21

The value you confgure in the Retry Interval text box determines
how long a secondary server waits before retrying a failed zone transfer.

Front 22

Expires After

Back 22

The value you confgure in the Expires After text box determines the
length of time that a secondary server, without any contact with its master server, continues to answer queries from DNS clients.

Front 23

minimum (Default) TTL

Back 23

The value you confgure in the Minimum (Default) TTL text
box determines the default Time to Live (TTL) that is applied to all resource records in
the zone.

Front 24

TTL For This Record

Back 24

The value you confgure in this text box determines the TTL of
the present SOA resource record.

Front 25

Name Server Records

Back 25

A name server (NS) record specifes a server that is authoritative for a given zone.

Front 26

The mail exchanger (MX) resource record

Back 26

The mail exchanger (MX) resource record is used by SMTP (mail) agents to locate other SMTP
servers in a remote domain, typically for the purpose of routing mail to that domain.

Front 27

refresh interval

Back 27

The refresh interval is the time after the no-refresh
interval during which time stamp refreshes are accepted and resource records are not
scavenged. After the no-refresh and refresh intervals expire, records can be scavenged
from the zone.

Front 28

What kind of zones do not automatically perform time stamping on dynamically
created resource records?

Back 28

Standard zones

Front 29

GlobalNames Zone

Back 29

a new feature that enables all DNS
clients in an Active Directory forest to use single-label name tags such as “Mail” to connect to
specifc server resources located anywhere in the forest

Front 30

Deploying a globalNames Zone

Back 30

he GlobalNames zone is compatible only with DNS servers running Windows Server 2008
and Windows Server 2008 R2.

Front 31

Enable GlobalNames zone support

Back 31

dnscmd . /confi g /enablegl obal namessupport 1

Front 32

Why would you use a globalNames zone?

Back 32

To facilitate the resolution of single-label computer names in a large network.

Front 33

Partition in dns

Back 33

A partition is a data structure in Active Directory that distinguishes data for different replication
purposes.

Front 34

To All Dns servers In This Forest

Back 34

This option stores the new zone in the ForestDnsZones
partition. Every domain controller in the entire forest and on which the DNS Server role
is installed will receive a copy of the zone.

Front 35

To All Dns servers In This Domain

Back 35

This option stores the new zone in the DomainDnsZones partition. Every domain controller in the local domain and on which the DNS
Server role is installed will receive a copy of the zone.

Front 36

To All Domain Controllers In This Domain

Back 36

This option stores the zone in the domain
partition. Every domain controller in the local domain will receive a copy of the zone,
regardless of whether the DNS Server role is installed on that domain controller.

Front 37

To All Domain Controllers specifed In The scope of This Directory Partition

Back 37

This
option stores the zone in the user-created application directory partition specifed in the
associated drop-down list box. For a domain controller to fall within the scope of such a
directory partition, you must manually enlist that domain controller in the partition.

Front 38

RE-CREATIng DomAInDnsZonEs AnD FoREsTDnsZonEs

Back 38

If either of the default application directory partitions is deleted or damaged, you can
re-create them in DNS Manager by right-clicking the server node and choosing Create Default Application Directory Partitions.

Front 39

Creating Custom Application Directory Partitions

Back 39

dnscmd servername /createdirectorypartition FQDN

dnscmd servername /enlistdirectorypartition FQDN

Front 40

Creating Custom Application Directory Partitions

Back 40

dnscmd server1 /createdi rectorypartiti on DNSpartitionA.contoso. com

dnscmd server2 /enl istdi rectorypartiti on DNSpartitionA.contoso. com

Front 41

Zone Transfer Initiation

Back 41

When the refresh interval of the primary zone’s SOA resource record expires

When a server hosting a secondary zone boots up

When a change occurs in the confguration of the primary zone and this primary zone
is confgured to notify a secondary zone of zone updates

Front 42

Manually updating a Secondary Zone

Back 42

Reload

Transfer from Master

Transfer new copy of zone from Master

Front 43

To delegate a zone

Back 43

To delegate a zone is to create a new zone for a subdomain within a DNS namespace and
relinquish authority of that new zone.

Front 44

When to Delegate Zones

Back 44

DNS delegations are automatically used to separate parent and child AD DS domains
in a single forest.

Front 45

stub zone

Back 45

stub zone is a copy of a zone that contains only the most basic records
in the master zone. The purpose of a stub zone is to enable the local DNS server to forward
queries to the name servers authoritative for the master zone

Front 46

You can use stub zones to do the following:

Back 46

Keep delegated zone information current

Improve name resolution

Front 47

True or False: you can perform a delegation only from a parent zone to a child zone.

Back 47

True

Front 48

Why does a stub zone improve name resolution when it is implemented across domains in a large forest or other DNS namespace?

Back 48

A stub zone provides a DNS server with the names of servers that are authoritative
for a given zone.

Front 49

Trust anchors

Back 49

Trust anchors are used with DNSSEC to establish trust relationships between DNS servers.

Front 50

What is the name of the record that contains a hash of the public key in a
delegated subdomain?

Back 50

A DS record

Front 51

key rollover

Back 51

This process of updating keys and digital signatures is also called key rollover

Front 52

The following two methods can be used for key rollover:

Back 52

Prepublished rollover

Double signature rollover