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Your job is to support the desktop computers in a small company of 32 employees. A consulting firm is setting up a private Web server to be used internally by company employees. The static ip address of the server is 192.168.15.200. Employees will open their Web browser and enter personnel.mycompany.com in the URL address box to browse this Web site. What steps do you take so that each computer in the company can browse the site using this URL?
There is an alphabet soup of protocols in TCP/IP - HTTP,FTP,SMTP,POP3,TCP,UDP,IP,ARP,ICMP, and others. What are the characteristics of these protocols? What are they used for?
What if private key is unknown? how would rsa algorithm be implemented then? Assume we have the algorithm which knows public key it is able to decrypt small amount of messages?
Consider error-free 256 kbps satellite channel used to send 1024-byte data frames. What is smallest window size that is large enough to optimize the throughput?
When troubleshooting a motherboard, you find out the modem port no longer works. What is the best and least expensive solution to this problem?
Consider a packet-by-packet fair queueing system with three logical buffers and with service rate of one unit/second. Show the sequence of transmissions for this system.
A crypto device encrypts each message into 20 bits of ciphertext.What is the entropy of the plaintext message? What is the entropy of the ciphertext message?
Research three web browsers. For each browser, try to use it to at least access, if not actively work with, each of the following type of common web sites.
Given today's networking technology; 3-bit and 7-bit sliding window sizes seem very restrictive. What would be a more reasonable size today? Describe your reasoning.
Number of citizens and their actions. Clearly this has privacy, implications. Explain the ethics of developing this type of system.
Assume that routers were subjected to conditions which might cause them to fail fairly often. Would this argue in favor of a VC or datagram architecture? Explain why?
Illustrate how many protocols and protocol implementations are required to permit all nodes to communicate?
Assuming that it is possible to protect the repository from attack, what are the disadvantages of this approach?
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