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When transferring a file between two computers, (at least) two acknowledgment strategies are possible. In the first one, the file is chopped up into packets , which are individually acknowledged by the receiver, but the file transfer as a whole is not acknowledged. In the second strategy, the packets are not acknowledged individually, but the entire file is acknowledged when it arrives. Discuss the two approaches.
What technology and cost-of-use issues are related with a client- dominant local area network? Think about what happens as the network grows in size and users are storing and retrieving vast amounts of data.
Explain role of antennas in transmitting radio waves. What kind of antenna is typically used in wireless LAN?
Derive a general expression for the width of a bit in terms of the propagation speed s, the transmission rate R, and the length of the link m.
Determine the IP addresses of www.google.com and www.yahoo.com. Modify hosts file to map www.google.com to yahoo's IP address and try to do google search. Remove modification to host file and repeat.
Identify each of the blocks commonly employed and utilize an analogy to sending a physical package to explain what each block does.
Given a DAC system explain how a MAC system could be "implemented" on top of this DAC system. Explain any problems and assumptions.
Consider the following method for congestion control in a error-free virtual circuit subnet.
Are LANs a stable technology or are they changing just as quickly as other forms of communication technologies? Should software licenses be dropped completely?
Write a short description of what they are and include your assessment of whether this activity is something to worry about or not.
Manager would like to add four servers to network so employees can share files. Manager would also like to permit VPN access for her employees so they can work remotely.
Explain in detail how PKCS (Public-Key Cryptography Standard), when combined with the RSA algorithm, can thwart Eve's attempt at discovering the encrypted figure.
Write down the tools and processes for scanning and removing possible vulnerabilities?
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