350-001 testking, 640-802 dumps and VCP-310

You need to design the DNS service implementation for the Willow Bridge, Inc.
network.350-001 To this end you must make a decision as to what action to take in order to
ensure that DNS name resolution traffic in the New York follows the shortest path.

What should you do? (Each correct answer forms part of the solution. Choose
THREE.)

A. Configure the DNS servers on the test network to forward queries for names of hosts
on the production network to the DNS servers in the production network.
B.
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Configure the DNS servers on the production and test networks to forward queries for
names of hosts on the Internet to the DNS server in the peripheral network.
C. Configure the DNS servers on the production network to forward queries for names of
hosts on the test network to a DNS server on the test network.
D. Configure a delegation to the zone on the test network on the DNS server on the
peripheral network.
E. Request the New York office ISP to configure a delegation on its DNS server to the
zone on the test network.
F. Configure a private root zone on a test network DNS server.
Answer: A, B, C
Explanation: Since you will need to implement two forests in this design you must
ensure that the computers on the production network can resolve Internet names and
names on the test network and those names on the production network can resolve
Internet names on the production network.640-802 When a computer submits a name query to its
configured DNS server, the most direct path for the subsequent name resolution traffic is
to a DNS server that is authoritative for the domain where the target host belongs.VCP-310 This is
because the authoritative server can resolve the query without communicating with other
DNS servers. Therefore if you consolidate the cached data on the DNS server that can be
used by both internal networks, you minimize the need for recursion.

Incorrect answers:
D: A delegation points to a DNS server that is authoritative for a child zone. This is not
what is required.
E: A name server (NS) record is a delegation that points to an authoritative DNS server
to provide referrals to that server. This is not what is required in this scenario.
F: Using a private root zone on a single-domain network on which a substantial portion
of queries is expected, you unnecessarily complicate name resolution traffic paths.

Reference:
Jerry Honeycutt; Introducing Microsoft Windows Server 2003, Microsoft Press, Chapter
16
Microsoft Windows Server 2003 Online Help - Understanding DNS - DNS domain
names, How DNS query works.

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