Monday, March 10, 2008

INSTALLING AND MANAGING DNS



I am reading TechNet notes, "active Directory and DNS" one of the very first things strike my eyes the statement says "Active Directory and DNS go hand in hand. DNS is required to configure Active Directory. Are you required to use Microsoft's DNS server to support Active Directory? The answer is no." Technically and reality sometimes slaps me the most. Over years I have been teaching MCSE classes and each class we teach, how important DNS is and now, we find out Microsoft DNS is not required, to support active directory. We still want Religiously Microsoft active directory DNS anyway. Because number of reasons.

Another reality statement as follows," Any DNS server supporting SRV records (RFC 2782) and dynamic DNS updates (RFC 2136) can be used to support Active Directory."

  • We get higher level of security and fault tolerance
  • AD integrated zone
  • Secure updates
  • Dynamic updates
  • Windows 2000 computers can dynamically register and update records with a DNS server that supports dynamic DNS update protocol

Please Take your time and try to find the answers for following question regarding to DNS

  1. What Is DNS
  2. What does Active directory integrated DNS mean
  3. What is a Zone?
  4. What port DNS operates on?
  5. What is A record
  6. What is Host record
  7. What is Glue Record
  8. What is PTR Record
  9. What is Forward lookup zone
  10. How many Forward lookup zones, we get after DCPromo? (Assuming we install DNS as well)
  11. What is Reverse lookup zone
  12. How many Reverse lookup zones, we get after DCPromo? (Assuming we install DNS as well)
  13. What is Alias record
  14. What is Cname record
  15. What is MX Record
  16. What is default priority for MX record ( you have to know this religiously (-J
  17. What is SRV record
  18. What tool can be used for DNS troubleshooting
  19. What is DCDiag.exe
  20. What is Repmon.exe
  21. What is FRSDiag.exe
  22. What is Netlogon service, what does it do?
  23. How does windows 2003 server is able to connect to the internet, right after installation
  24. What is root hint servers
  25. How many root hint servers available by default or after installation windows 2003 server
  26. Where do I locate root hint servers in DNS
  27. What happened when Cache.dns file is missing or corrupted

Please do some research, we will go over each question in the next class. Passing score is 700 each question is worth for 40 points, anyone gets below 500 is going to buy lunch this Saturday

(I am just kidding)

Oz ozugurlu,

Systems Engineer

MCITP (EMA), MCITP (SA),

MCSE 2003 M+ S+ MCDST

Security Project+ Server+

oz@SMTp25.org

http://smtp25.blogspot.com (Blog)

7 comments:

Liz said...

What Is DNS – Domain Name Service
What does Active directory integrated DNS mean – it uses the directory for the storage and replication of DNS zone databases
What is a Zone? – Subtree of a DNS database.
What port DNS operates on? - 53
What is A record – maps a host name to an IP address.
What is Host record – contains information about a host, its status, and its owner.
What is Glue Record – an A record that is created as part of a delegation.
What is PTR Record – Pointer record maps IP address to host name.
What is Forward lookup zone – A name to address database.
What is Reverse lookup zone – DNS database
What is Alias record – CNAME record
What is Cname record – Canonical name record is an alias of one name to another.
What is MX Record – Mail Exchanger.
What is default priority for MX record ( you have to know this religiously - 10?
What is SRV record – Service record.
What tool can be used for DNS troubleshooting – nslookup.
What is DCDiag.exe – Domain Controller Diagnostic tool.
What is Repmon.exe – replication monitor
What is FRSDiag.exe – File Replication Service Diagnostic tool.
What is Netlogon service, what does it do? – A service that is responsible for communication between systems in response to account logon events.
How does windows 2003 server is able to connect to the internet, right after installation – TCP/IP properties.
What is root hint servers – DNS server that is authoritative for the root of the DNS namespace.

Oz Ozugurlu said...

Thanks Liz you are the first as always (-:

oz

Miguel said...

1) What is DNS? Domain Name System.
2) What does AD integrated DNS mean? Integrates zone information in AD and uses AD to replicate zone information.
3) What is a zone? A portion of the namespace over which an authoritative name server has control.
4) What port does DNS oparates on? 53
5) What is an A record? Translates a host name to an IP address.
6) What is a host record? Contains information about a host, its status and owner.
7) What is a Glue Record? An A record that is created as part of a delegation.
8) What is a PTR Record? A record that translates IP addresses to a name.
9) What is Forward Lookup Zone? Resolves a name to an IP address.
10) What is a reverse lookup zone? Resolves an IP address to a name.
11) What is an Alias record? A CNAME record.
12) What is a CNAME record? An entry in a DNS table that points a FQDN to another.
13) What is a MX Record? A mail exchange record.
14) What is default priority for MX record? level 10.
15) What is SRV record? Service Record.
16) What tool can be used for DNS troubleshooting? nslookup.
17) What is DCDiag.exe? DC Diagnostic Tool.
18) What is Repmon.exe? Replication Monitor.
19) What is FRSDiag.exe? File Replication Diagnostic Tool.
20) What is Netlogon service? What does it do? Verifies logon requests. Authenticates and locates DCs.
21) How does Windows 2003 Server is able to connect to the Internet after installation? TCP/IP Properties.
What is root a hint server? Is used to prepare authoritative for non-root zones.

Miguel said...

Where do I locate root hint servers in DNS? root.hings.

What happens when cache.dns file is missing or corrupted? The DNS server is unable to resolve names for which is not authoritative.

Oz Ozugurlu said...

Nice, Thanks Miquel
oz

joe said...

Joe Winbush

What Is DNS?- Domain Name Service

What does Active directory integrated DNS mean? - it enables Active Directory storage and replication of DNS zone databases

What is a Zone? is a DNS database, a contiguous portion of the domain tree that is administered a s single seperate entity by a DNS server. it contains resource records for all the names within the zone.

What port DNS operates on? 53

What is A record? An address record that maps a hostname to a 32-bit IPv4 address.

What is Host record? It contains information about a host, its status, and its owner.

What is Glue Record? an A record that is created as part of a delegation.

What is PTR Record? A record in DNS that translates an IP Address into a name.

What is Forward lookup zone? Is used to resolve computer host names to an IP Address.

What is Reverse lookup zone? An authoritve DNS zone that is primary used to resolve IP Addresses to network resource names.

What is Alias record? It is a CNAME (host) record

What is Cname record? A canonical name record is an alias of one name to another.

What is MX Record? (Mail Exchange )IT maps a domain name to a list of mail exchange servers for that domain.

What is default priority for MX record? The MX record default priority level is 10.

What is SRV record? Service records that are used to map a service to the DNS computer name of a server that offer that service

What tool can be used for DNS troubleshooting? NS lookup

What is DCDiag.exe? Domain Controller Diagnostic tool.

What is Repmon.exe? replication monitor

What is FRSDiag.exe? File Replication Service Diagnostic tool

What is Netlogon service, what does it do? A LAN Manager service that implements logon security. This service verifies the usernarne and password supplied by each user logging on to the local area network


What is root hint servers? Root hints are used to prepare servers authoritative for non-root zones so that they can learn and discover authoritative servers that manage domains located at a higher level or in other subtrees of the DNS domain namespace

I wiil find the remaining answers.

Oz Ozugurlu said...

Thanks Joe
oz