The CNT Books network described in Case Project 8-1 is expanding. There are 200 more user stations in the building, and a total of five floors are in use by the network. You have kept up with the design so far with a network of five subnets, each with its own router. The company leased a building across the street. You expect at least four subnets to be added to the design. The owner is concerned about how to connect to the building across the street, as he thinks the cost of contracting with a communications provider is too expensive for such a short distance. What solution can you suggest for connecting the building across the street with the existing building

Check the explanation

Explanation:

For 1st part (which you said not needed):

Layers that are most likely concerned:

1- A computer will not connect to the net. After some investigation you will then discover that the patch cable is note ended properly.

2- A computer can access resources on the local LAN but not on a unlike subnet. You find that the computer’s default gateway is not configures properly.

3- You can ping a computer that you are trying to transport files to via FTP, but you can’t communicate via FTP.

4- All computers associated to a particular hub have lost network connectivity. You determine that the hub is the trouble.

5- You get an encrypted text file, but when you open it, you will then discover the text is unreadable. You decide that decryption did not take place as it should have.

For 2nd part of your question::

This is a some sort of answer and may not helpful always

As we know dynamic addresses are popular with ISP, because it enables them to use fewer IP addresses than their total figure of customers.

They only need an address for each customer who is active at any one time. Globally routable IP addresses cost money, and some establishment that specialize in the obligation of addresses (such as RIPE, the European RIR) are very strict on IP address usage for ISP's(Internet service providers). Assigning addresses dynamically allows ISPs(Internet service providers) to save money, and they will often charge extra to provide a static IP address to their customers

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