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Q. Explain Full Duplex data transmission?
- Have two separate Communication channels as well as use each one for simplex Data traffic (in different directions).
- If this is through we have two separate physical circuits each with a "forward" channel (for data) and a "reverse" channel (for acknowledgements).
- In both cases the bandwidth of the reverse channel is approximately entirely wasted and in effect the user is paying for two circuits but using only the capacity of one.
- A better idea is to utilize the same circuit for data in both directions and in this model the data frames from A to B are intermixed with the Acknowledgement frames from A to B.
- By gazing at the kind field in the header of an incoming frame the receiver can tell whether the frame is data or acknowledgement.
What can be done to fix signal attenuation problems? A common way of dealing with like problem is to use repeaters and hub, because it will help regenerate the signal and thus
Q. What are the basic key functions of data link layer? Ans: Data link layer transfers data in a structured and reliable manner so that the service given by the physical layer
TCP Segment Structure Figure shows the format of the TCP segment. The header consists of a 20 bytes fixed part plus a variable size options fields. The description o
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
OSI Reference Model Normal 0 false false false EN-IN X-NONE X-NONE
What is Microwave? Microwaves have been used in data communications. Microwave has a higher frequency than radio waves and thus can handle larger amounts of data.
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how signals are transmitted in telecommunications
Disadvantages You typically would not use a packet filter as your only security solution for your network packets filters have two major disadvantages. a. Low securit
Problem 1 Bring out the differences between POP and IMAP4 Problem 2 Discuss User Datagram protocol Problem 3 Explain the various steps in TCP congestion control
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