You want to transfer a document from one computer to another, and you want the d

Question

You want to transfer a document from one computer to another, and you want the document to be encrypted. The destination computer is on another network, so you know the data will have to travel through one or more routers. The network technology used on your network is Ethernet, but the technology on the destination network is token ring. From what you have learned about networking, should this document transfer work? Why or why not? Which layers of OSI model are involved in the italicized parts of this description?

Explanation / Answer

Yes data can be transfered from ethernet to token ring which is nothing but LAN . Layers that are most likely involved: 1- A computer will not connect to the network. After some investigation you find that the patch cable is note terminated properly. 2- A computer can access resources on the local LAN but not on a different subnet. You find that the computer’s default gateway is not configures correctly. 3- You can ping a computer that you are trying to transfer files to via FTP, but you can’t communicate using FTP. 4- All computers connected to a particular hub have lost network connectivity. You determine that the hub is the problem. 5- You receive an encrypted text file, but when you open it, the text is unreadable. You determine that decryption did not take place as it should have. 6- You check some statistics generated by a network-monitoring program and discover that an abnormally high number of CRC errors were detected 7- One of your servers has been exhibiting sluggish network performance. You use a network-monitoring program to try to evaluate the problem. You find considerable TCP retries occurring because the server is being overwhelmed by data and packets are being discarded. 8- A user is trying to connect to another computer, but the logon attempt is continually rejected. 9- You try to access a linux server to share files using NFS. You can communicate with the server, but the shared files don’t appear to be available. 10- You inspect a computer that is not able to communicate with other computers. You think that IPX/SPX instead if TCP/IP is installed on that computer.

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