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QUESTION
a) How is an Intranet different from an Internet?
b) State the main differences between a router and a switch
c) Explain the function of a modem
d) Calculate the download time of a 2.5 GB file with an ADSL connection with a downstream speed of 256 kbps and an upstream speed of 128 kbps
i. When the line is 100% usage
ii. When the line is 80% usage
Express your answers in Hours: Minutes: Seconds
Describe OSPF?
SONET Frame Format SONET uses a basic transmission rate of STS -1 that is equivalent to 51.84 mbps. Higher level signals are integer multiples of the base rate. For exa
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
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.
Perfect Shuffle Permutation This was advised by Harold Stone (1971). Consider N objects each characterized by n bit number say X n-1, X n-2, X 0 (N is chosen such that N
Illustrate a traffic light is an example of what type of mechanism Ans) A Traffic light is an example of flow control.
Q. What is an Error? At any time bits flow from one point to another they are subject to unpredictable changes because of interference The interference is able to change the
What is silly window syndrome? It is a difficulty that can ruin TCP performance. This problem happens when data are passed to the sending TCP entity in large blocks, but an int
Name the categories of Multiplexing? There are three categories of multiplexing a. Frequency Division Multiplexing (FDM) b. Time Division Multiplexing (TDM) i. Sync
Mesh It is of two dimensional network. In this every processing elements are arranged in a two dimensional grid. The processor are in rows i and column j are denoted by PEi
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