1. What is the percentage overhead of a system that sends 12 seven-bit ASCII cha

Question

1. What is the percentage overhead of a system that sends 12 seven-bit ASCII characters as a block proceeded by 1 start bit, then followed by 1 parity bit and 14 stop bits? The bit time for this system is 0.000625 seconds per bit. Provide your answer with no units and give two places after the decimal point (yes you need a decimal point in this case). Do not provide units and do not use the % symbol, though you should give your answer as a percentage.

2.

An engineer has designed transmission equipment to transmit 7200 symbols per second while encoding 8 bits per symbol. If the signal to noise ratio is 400:1 and the channel bandwidth is 3625 Hz, has the engineer's design exceeded theoretical limits? (Select One)

Yes, both the limit on symbol rate and the limit on bits per symbol have been exceeded.
Yes, but only the limit on symbol rate has been exceeded.
Yes, but only the limit on bits per symbol has been exceeded.
No, none of the theoretical limits have been exceeded.

3. A frame relay frame arrives and the address field is 1101001001001011. Mark the statements below that are true regarding this frame. (Multiple answers can be correct)
      
This frame encountered congestion.
The frame tells the receiver it needs to slow its own transmission rate.
The sending station exceeded its CIR.
The receiver should set the BECN bit in its reply to notify the other end to slow down.

Explanation / Answer

1. What is the percentage overhead of a system that sends 12 seven-bit ASCII cha

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