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

You are designing an IP addressing strategy for the Willow Bridge, Inc. network.
You need to take a decision as to which subnet mask you will use in the Los Angeles
office.

What should you do?

A. You should use 255.248.0.0 on the Los Angeles office.


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B. You should use 255.255.252.0 on the Los Angeles office.
C. You should use 255.255.248.0 on the Los Angeles office.
D. You should use 255.255.255.128 on the Los Angeles office.
E. You should use 255.255.240.0 on the Los Angeles office.
F. You should use 255.255.192.0 on the Los Angeles office.
G. You should use 255.255.128.0 on the Los Angeles office.
Answer: B
Explanation: A subnet mask is the leftmost bits in an IP address that are used for
network identification.
350-001 The remaining rightmost bits of an IP address are used for
identification of hosts on the network.640-802
To be able to determine the correct subnet mask
for a network, you need to take into account the number of network devices on the
network.VCP-310 Since there are 700 users in the Los Angeles office, you should provide for 700
IP addresses, therefore you should use the 10 bit mask
This subnet mask would work for the Los Angeles office or even the Chicago office,
under the 255.255.252.0 subnet mask, 10 bits are reserved for host IDs, which allows for
1,022 host IDs. This would be ideal for the Los Angeles or Chicago offices.

Incorrect answers:
A: This 255.248.0.0 subnet mask would be excessive as it allows for over a half million
host IDs.
C: 255.255.248.0 allows for 2,046 Host IDs. This is excessive for the branch offices but
insufficient for the New York office.
D: 255.255.255.128 allows for 126 host IDs because only 7 bits under this mask is
reserved for host IDs which would be ideal for any of the agencies.
E: Under the 255.255.240.0 subnet mask, 12 bits are reserves for host IDs, which allows
for 4,094 host IDs, which would be sufficient for the New York office, not the Los
Angeles office.
F: 255.255.192.0 allows for over 16,000 host IDs which is way too excessive for any of
the Willow Bridge, Inc. offices or agencies.
G: 255.255.128.0 allows for 32,000 host IDs which is way too excessive for any of the
Willow Bridge, Inc. offices or agencies,

Reference:
Microsoft Windows Server 2003 Deployment Kit: Deploying network services -
designing a TCP/IP Network.
Jerry Honeycutt; Introducing Microsoft Windows Server 2003, Microsoft Press, Chapter
16
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