Networking Homework Question 1

Test #1

1. Assume that an ISP owns the address block 206.0.64.0/18, which represents 16,384 (2¹⁴) IP addresses

Suppose a client requires 800 host addresses

1. How many classful B addresses would need to be assigned?

1. How many class C addresses would need to be assigned?

1. With CIDR: Assign a /19, or, /20, or, /21, or, /22 block?

2. Given a block 192.168.12.0/23. Extend the prefix to /24

Then identify the number of sub-blocks that can be aggregated by the given block above.

3. Suppose a network architect decides to use the 172.16.0.0/16 address space to design a corporate network. The architect determines that 64 blocks of addresses with up to 1022 hosts in each are required.

Hence the resulting mask:

and the corresponding prefix:

The network architect assigns address block___ to Division X.

The prefix mask provides Division X with a range of addresses from___through__.

4. Aggregate the following address blocs to the highest degree possible.

210.50.132.0/24

210.50.133.0/24

210.50.134.0/24

210.50.135.0/24

5. Aggregate the following set of IP/24 network addresses to the highest degree possible.

212.56.146.0/24

212.56.147.0/24

212.56.148.0/24

212.56.149.0/24

6. Given a block 130.192.0.0/16
   1. Design IP Network Scheme to support the number of nodes at three different sites connected by three routers as shown in the diagram below.

      IP1 ………. IP5 are sub-blocks that you need to create from 130.192.0.0/16 to support the nodes specified at each of the locations.

      At each of the locations, a layer-3 switch connects to the router – thus enabling a VLAN at each of the location.

   2. Show the routing tables at each of the three routers.
   3. IP1 thru IP5 are sub-blocks created from the original block 130.192.0.0/16