DNS Services on Windows Server 2019

Questions and Answers

What is the primary function of the Forward Lookup Zones in the DNS Manager?

To manage email servers

To configure firewalls

To allocate IP addresses dynamically

To resolve IP addresses to domain names (correct)

What is the correct IPv4 address format for the A record created in the video?

10.0.0.91

10.1.0.91 (correct)

100.1.0.91

192.168.1.91

What is the domain name used in the video's lab environment?

ogit.com

dns.local

example.com

ogit.local (correct)

What is the purpose of creating a new A record in the DNS Manager?

To resolve a hostname to an IP address Signup and view all the answers

What is the correct procedure to add a new record in the DNS Manager?

Right-click almost anywhere and select 'Create New Record' from the list Signup and view all the answers

What is the operating system running on the server in the video?

Windows Server 2019 Signup and view all the answers

What type of record can be created by selecting 'Other New Records' in the DNS Manager?

Any record type not listed in the menu Signup and view all the answers

What is the IP address of the DNS server in the video?

192.168.1.100 Signup and view all the answers

What is the outcome when you do a reverse DNS lookup on an IP address?

It returns the hostname associated with the IP address Signup and view all the answers

What is the purpose of the pointer record in DNS?

To perform reverse lookups, mapping an IP address to a hostname Signup and view all the answers

What is the command used to perform a DNS lookup on a hostname?

nslookup Signup and view all the answers

What is the purpose of the A record in DNS?

To map an IPv4 address to a hostname Signup and view all the answers

What is the record type used for email servers in DNS?

MX record Signup and view all the answers

What is the output of the command 'nslookup -type aaaa '?

The IPv6 address of the hostname Signup and view all the answers

What is the advantage of using a DNS server with a specific IP address?

It specifies the DNS server to use for lookups Signup and view all the answers

What is the purpose of the SRV record in DNS?

To specify the location of a server Signup and view all the answers

What is the main purpose of creating a reverse lookup zone?

To perform a reverse DNS lookup for IPv4 networks Signup and view all the answers

What happens when a pointer record is created in a forward lookup zone?

A reverse lookup zone is automatically created Signup and view all the answers

What is the correct syntax for an IPv6 address in a AAAA record?

2001:db8:6783:1::99 Signup and view all the answers

Why did the first attempt to create a pointer record for an IPv6 address fail?

The reverse lookup zone was not created Signup and view all the answers

What is the purpose of the `nslookup` command?

To test DNS lookups Signup and view all the answers

What is the correct format for an IPv6 reverse lookup zone?

2001:db8:6:7:8:3:0:1 Signup and view all the answers

What happens when you create a new AAAA record with an associated pointer record?

Both the AAAA record and pointer record are created Signup and view all the answers

Why is it necessary to have a reverse lookup zone for IPv6?

To enable reverse DNS lookups for IPv6 addresses Signup and view all the answers

What is the purpose of the `Add Host` button?

To create a new DNS record Signup and view all the answers

What is the result of clicking the `Refresh` button in the reverse lookup zone?

The reverse lookup zone is updated with the new pointer record Signup and view all the answers

Study Notes

DNS Server Configuration

In this video, we're taking a look at a Windows Server supporting DNS services and many record types.
The server has an IP address of 192.168.1.100, and it's running Windows Server 2019.
The DNS Manager can be accessed through the Tools menu.

Forward Lookup Zones

Forward Lookup Zones are used for normal lookups, asking what IP address is behind a name.
In the DNS Manager, ogit.local is the domain, and it has some A records.
To add a record to the domain, you can right-click and select "New A or AAAA record" or "Other New Records".

A and AAAA Records

An A record is for an IPv4 address, and a AAAA record is for an IPv6 address.
To create a new A record, you need to specify the hostname and the IPv4 address.
Creating an A record can also automatically create a pointer record for reverse lookups.

For a AAAA record, you need to specify the hostname and the IPv6 address, but it requires a reverse lookup zone to be created.

Yes, that's correct. When creating an A record, a corresponding pointer (PTR) record for reverse lookup is typically created automatically by the DNS server. However, when creating a AAAA record for an IPv6 address, a PTR record for reverse lookup will not be automatically created. To set up reverse DNS lookup for IPv6 addresses, a specific reverse lookup zone needs to be configured and PTR records added manually.

Reverse Lookup Zones

A reverse lookup zone is required for pointer records to be created.
The reverse lookup zone is created based on the first octets of the IP address.
For the 10.1.0 network, the reverse lookup zone is 0.1.10, and for the 192.168.192 network, it's 1.168.192.
For IPv6, the reverse lookup zone is created based on the network address space.

Testing DNS Records

To test DNS records, you can use the nslookup command in the command line.
You can test A records by specifying the hostname and the DNS server.
You can test reverse lookups by specifying the IP address and the DNS server.
You can also test AAAA records by specifying the hostname and the DNS server.

DNS Record Types

A record: for an IPv4 address
AAAA record: for an IPv6 address
MX record: for an email server
Canonical name record: an alias for another name
Pointer record: for reverse lookups, meaning you have an IP address and want to figure out what the name is behind it
There are many other record types, including SRV records for server location, and records for security and keying information.

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Description

Walkthrough of DNS services on a Windows Server 2019, including record types and configuration. Explore the Windows Server environment and DNS setup.