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1.What is a network? What are the six main elements and their functions of a typical network? Explain each one. What devices are used in layers 1-3? What is a message called in layer 2? Layer 3?
2. What is a circuit? Describe the two-wire and four-wire circuits. What is a signal? What devices boost a weak signal (discuss both signals)? What is a channel?
3. Differentiate between the following multiplexing techniques in terms of mechanics, technology, and applications:
Describe the advantages and disadvantages of several different Web 2.0 technologies. How could these technologies be used for good? What types of problems might these technologies cause?
Assess illustrate why technical means to guarantee data confidentiality depend upon trust.
Can you configure the browser to open multiple simultaneous connections to the Web site? Write down the advantages and disadvantages of having large number of simultaneous TCP connections?
Integrity SL = security clearance for level L = integrity clearance for level L SC = security category set for cat. C = integrity category set for cat C. Prove that in this system subject can only read and write at his own level.
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.
Iif both C1 and C2 at time t0 have congestion window of 10 segments what are their congestion window size after 2200 msec
Write a temperature conversion program. The GUI and event handling setup should be done in the constructor of the class that implements the GUI.
How would one define the s-t cut on node capacitated network as opposed to the edge capacitated network, and how would one illustrate that analogue.
Create a state transition diagram that describes typical patient states and how they change based on specific actions and events.
Design a network that will integrate a wireless network into an existing wired network. The wired network consists of five departments in a two-story building.
Let N users participating in audio/video conference by using IP multicasting. How many distinct SSRCs are required?
Assume that we are working on a workstation with an instruction rate of 500 MIPS. How many instructions can the processor execute between the receipt of each individual bit of the message?
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