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What is yahoo's ip address?

Finding Subnet Mask from IP address?

  • I'm doing a CCNA course, and i'm stuck on this problem. In this lab, you have been given the network address 192.168.9.0/24 to subnet and provide the IP addressing for the network shown in the Topology Diagram. The network has the following addressing requirements: • The BRANCH1 LAN 1 will require 10 host IP addresses. • The BRANCH1 LAN 2 will require 10 host IP addresses. • The BRANCH2 LAN 1 will require 10 host IP addresses. • The BRANCH2 LAN 2 will require 10 host IP addresses. • The HQ LAN will require 20 host IP addresses. • The link from HQ to BRANCH1 will require an IP address for each end of the link. • The link from HQ to BRANCH2 will require an IP address for each end of the link. (Note: Remember that the interfaces of network devices are also host IP addresses and are included in the above addressing requirements.) Task 1: Examine the Network Requirements. Examine the network requirements and answer the questions below. Keep in mind that IP addresses will be needed for each of the LAN interfaces. How many subnets are needed? 7 What is the maximum number of IP addresses that are needed for a single subnet? ____ How many IP addresses are needed for each of the branch LANs? 1 What is the total number of IP addresses that are needed? ____ Task 2: Design an IP Addressing Scheme. Step 1: Subnet the 192.168.9.0 network into the appropriate number of subnets. What will the subnet mask be for the subnetworks? __________________________ How many usable host IP addresses are there per subnet? __________ Fill in the following chart with the subnet information. 've filled out what i've done, but I am totally lost on this problem. Maybe i'm thinking too hard. For task 2 it's asking me for the the subnet mas for the subnetworks, wouldn't that just be 255.255.255.0? Here's my reference: [url]http://docs.google.com/viewer?a=v&q…

  • Answer:

    Here are some sites to learn and practice subnetting: http://easysubnet.com/ http://subnettingquestions.com

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As to your subnet masks, the subnet mask determines the subnet address space. If you have a mask of 255.255.255.0, then your subnet will contain 255 possible addresses, with the high-order 24 bits ignored and the low-order 8 varying. You've been given a CIDR of 192.168.9.0/24. This is a range of addresses from 192.168.9.1 to 192.168.9.255. If you apply a subnet mask of 255.255.255.0 to that, then the whole CIDR will be in one subnet, which isn't what you want. If you were to apply a mask of 255.255.255.128 to that CIDR, then you'd have 2 possible subnets with 127 addresses each; 255.255.255.192 gives you 4 with 63 addresses each, etc. The reason you'd even bother with subnets is to keep local traffic local.

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