oooo T-Mobile Wi-Fi 2:01 PM 91%, fvsu.view.usg.edu Page 1 Problems 1.5 Two compu
ID: 3805694 • Letter: O
Question
oooo T-Mobile Wi-Fi 2:01 PM 91%, fvsu.view.usg.edu Page 1 Problems 1.5 Two computers are connected together through their serial ports and Hyper-terminal communication software. 12 u (each 4 points). The communication settings between the two computers are as Data transmission rate 19200 bit/seconds (bps) data bits 8 start bit 1 R Parity bit none stop bit If one computer transfers a data file of 19200 bytes, determine What is the type of connection between the two computers R saved Response synchronous Response O Asynchronous Info Item Both a and b Question points What is the efficiency of transmission in percent? 66.7% How many frames are needed to transmit the fle? How many extra bits (overall overhead) are transmitted with the data file? Show your work clearly.
Explanation / Answer
Q.1
In this case the data transferred is asynchronous.(b)
Reason:
In asynchronous, or "best effort" transfers, sender and receiver do not establish the parameters of the information exchange. Rather, the sender places extra bits of data before and after each burst that indicate when each burst begins and ends. That is the reason we have start and end bit here. It then sends the information, and it is up to the receiver to determine how to reset its clock to match the timing of the signal. Unlike synchronous transfers, the receiver does not take time to communicate to the sender information about what it received.
Q.2
Efficiency of transmission: 72.7% (C)
Explanation:
Efficiency of transmission=(useful data/total number of bits transmitted)*100
= (8/(8+1+2))*100
=(8/11)*100
=(0.727)*100
=72.7%
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