Lab 7: IP and Subnetworks

1 Start 2 Complete

Netmask

You have been told that your Computer's IP address is 130.7.32.35 /27

(a) What is the dotted-decimal representation for your computer's subnet mask?

(b) What is the dotted-decimal representation of your computer's subnetwork address?

Network Address and Host

Given IP address 126.107.93.37 and netmask 255.255.0.0

(a) What is the network address?

(b) What is the maximum number of hosts that could be in this subnet?

(d) What is the IP address of the last host in this subnet?

(e) What is the broadcast address for this subnet?

Examining Your Network Space

You are lucky enough to own the network space denoted by 128.66.0.0 / 19.

(a) What is the address of your network in binary?

(b) What is binary and dotted decimal of your network's netmask?

Using All of Your Network as One Large Network

If you use all of your network as one large network . . .

(a) What is the IP address of the first host (lowest numbered host) in binary and dotted decimal? Remember to include the proper slash number in the dotted decimal notation.

(b) What is the IP address of the last host (highest numbered host) in binary and dotted decimal? Remember to include the proper slash number in the dotted decimal notation.

Subneting

If you decide to divide your network into 8 subnetwork . . .

(a) What is the subnetwork address for one of your 8 subnetworks in binary and dotted decimal? Remember to include the proper slash number in the dotted decimal notation.

(b) What is the IP address of the last host (highest numbered host) of the same subnetwork of the prior question, in binary and dotted decimal? Remember to include the proper slash number in the dotted decimal notation.

(c) How many hosts are available to you in the subnetwork of the prior question? (Your answer can be an unminimized expression.

(d) How many hosts are available to you in \textbf{all 8} subnetworks together? (Your answer can be an unminimized expression.)

(e) A new company needs a network for 100 PCs. You learn that of these options for the PCs' IP addresses is more expensive than the others. Which one?

IP addresses 10.0.0.1/25 through 10.0.0.100/25.

IP addresses 40.0.0.1/25 through 40.0.0.100/25.

IP addresses 172.16.0.1/25 through 172.16.0.100/25.

IP addresses 192.168.0.1/25 through 192.168.0.100/25.

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