A record

[Emyeu]

In Active-Directory, DNS.
Will Windows XP Pro. sp2 workstations able to register to the DNS in Domain
Controller?
Will the Windows Firewall blocked it by default?
If a registered, A record, machine has physically permanently removed (no
longer in use), will the record in DNS remove automatically?

 

[Kevin D. Goodknecht Sr. [MVP]]

In Active-Directory, DNS.
Will Windows XP Pro. sp2 workstations able to register to the DNS in
Domain Controller?
Yes

Will the Windows Firewall blocked it by default?

Not that I'm aware of.

If a registered, A record, machine has physically permanently removed
(no longer in use), will the record in DNS remove automatically?

It depends on who owns the record or if scavenging is enabled. If the record
is dynamically registered, the record should be removed at shutdown. This
may not happen if the client is suddenly disconnected from the network or
ungracefully powered off.

 

[Herb Martin]

In Active-Directory, DNS.
Will Windows XP Pro. sp2 workstations able to register to the DNS in Domain
Controller?

Yes. Assuming you set them up correctly and they can
find the dynamic DNS server Master(s).

Will the Windows Firewall blocked it by default?

Not the XP client side. It blocks the XP machine being
a "server" (for most things).

If you turn on the equivalent firewall ("basic firewall" ) on the
DNS server then yes.

If a registered, A record, machine has physically permanently removed (no
longer in use), will the record in DNS remove automatically?

Maybe.

Scavenging removes such abandoned dynamic records but is
off by default.

Scavenging must be enabled in two places to function: One
the DNS server (as a whole) and on EACH Zone (in particular.)