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Q1) Consider an error-free 256 kbps satellite channel used to send 1024-byte data frames. Assume that each frame is acknowledged with a short ACK that is sent in a separate channel. What is the maximum throughput if the sender is using a window size of 1, 7, 15, 127? What is the smallest window size that is large enough to optimize the throughput?
In second strategy, packets are not acknowledged individually, but the whole file is acknowledged when it arrives. Explain the two approaches.
Explain the purposes of POE in WLAN design. Provide at least 3 scenarios of POE being used as the prime element in WLAN design to address the projects cost
Are organizations likely to find better solutions to information overload through changes to their technical systems or their social systems, or both? Why?
Determine the size of Ethernet MAC addresses?
Coaxial cable is two-wire transmission system, determine the advantage of connecting outer conductor to ground? Explain the two layers: LLC & MAC.
Describe how the greater reach of telecommunication networks today affects the security of resources which an organisation provides for its employees and customers.
Consider improved version of Vigenere cipher, where instead of using multiple shift ciphers, multiple mono-alphabetic substitution ciphers are used.
From RFC 1034, DNS domain names are composed of labels. Are there any labels which nodes are not allowed to allot to their data? If so, what are they?
One-way to solidify the concepts of client/server computing and interprocess communication is to develop the requirements for a computer game which plays "Rock, Paper, Scissors" using these techniques.
Show practical and theoretical knowledge of LAN/Internet technologies
Suppose there is a Certificate Authority (CA) with well-known public key. Further suppose every user is issued a certificate for his/her public key.
It is essential to encrypt it, by using solutions like PGP (Pretty Good Privacy), S/MIME (Secure Multi-Purpose Internet Message Exchange), and steganography. Research these different mechanisms.
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