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Q. Fiber-Optic Cable as transmission media?
- Made of glass signals are transmit like light pulses from an LED or laser
- Light is as well a form of electromagnetic energy
- Speed depends on density of medium it is travelling through fastest when in a vacuum 186000 miles/second
Length This is a 16 bit field that defines the total length of the user datagram, header plus data. This 16 bit can define a total length of a 0 to 65, 535 bytes.
- Light source is LED (light-emitting diode) or a laser - LEDs are cheaper however not as precise (unfocused) limited to short-distance use - Lasers is able to have a narrow
Illustrate the Bellman-Ford algorithm The Bellman-Ford algorithm uses only on information from its neighbours and knowledge of its link costs, to update it costs and paths. Dij
Line Layer The line layer provides the synchronization multiplexer, multiplexing and automatic protection switching for the layer . primary concerned with the reliable trans
What are the advantages of bus topology? The benefit of physical bus topology is: a. It uses established standards and it is relatively simple to install. b. It needs les
How Firewall configuration makes all the difference The greatest blunder that any company make is to just install a firewall and think that they have ensured perfect securit
what the domain name of 128.252.160.2000
Assume that a user wants to download from a server a web page that references 3 objects. The base page and each of the objects are of the same size that requires 20 ms transmission
What are the Internal Threats Internal security problems are probably the most common. One never knows what someone is going to do. Even the most loyal employees or workers can
What are advantages of having e-commerce over extranets
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