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03.04.2008 at 07:00PM PST, ID: 23214859
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9.0

help on explanation of subnetting question

Asked by moomee2 in TCP/IP, Network Routers

Tags:

Given an ip address how do I determine the subnetmask?

Rooslan is the administrator of a Windows Server 2003 system that runs Internet Information
Services. The server hosts a single Web site that contains confidential company information. This information should be accessible only by specific hosts from particular
subnets within the corporate WAN. Rooslan would like to enable hosts to access the server only from the following IP address ranges:
10.10.10.1 through 10.10.10.126
10.10.10.129 through 10.10.10.190
10.10.20.225 through 10.10.20.238
10.10.30.193 through 10.10.30.254

Rooslan edits the default Web site properties, navigates to the Directory Security tab, and clicks Edit in the IP Address And Domain Name Restrictions frame. He selects Denied Access and then clicks Add to list the exceptions. Which of the following Net-work ID and Subnet Masks should he enter to limit access to the IP address ranges specified above? (Choose all that apply.)

A. Network ID: 10.10.10.0, Subnet Mask: 255.255.255.128  correct
B. Network ID: 10.10.10.0, Subnet Mask: 255.255.255.0
C. Network ID: 10.10.10.128, Subnet Mask: 255.255.255.64
D. Network ID: 10.10.10.128, Subnet Mask: 255.255.255.192 correct
 E. Network ID: 10.10.20.224, Subnet Mask: 255.255.255.224
F. Network ID: 10.10.20.224, Subnet Mask: 255.255.255.240 correct
G. Network ID: 10.10.30.192, Subnet Mask: 255.255.255.192 correctStart Free Trial
[+][-]03.04.2008 at 07:06PM PST, ID: 21047369

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[+][-]03.04.2008 at 07:42PM PST, ID: 21047544

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About this solution

Zones: TCP/IP, Network Routers
Tags: subnetting
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Solution Provided By: donmanrobb
Participating Experts: 2
Solution Grade: A
 
 
[+][-]03.04.2008 at 07:46PM PST, ID: 21047558

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[+][-]03.04.2008 at 07:51PM PST, ID: 21047584

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