Suppose we are transmitting frames between two nodes using Stop-and-Wait protocol. The frame size is 3000 bits. The transmission rate of the channel is 2000 bps (bits/ second) and the propagation delay between the two nodes is 100 milliseconds. Assume that the processing times at the source and destination are negligible. Also, assume that the size of the acknowledgement packet is negligible. Which ONE of the following most accurately gives the channel utilization for the above scenario in percentage?
Consider an Ethernet segment with a transmission speed of $10^8$ bits/sec and a maximum segment length of 500 meters. If the speed of propagation of the signal in the medium is $2 \times 10^8$ meters/sec, then the minimum frame size (in bits) required for collision detection is _________
Assume that a 12-bit Hamming codeword consisting of 8-bit data and 4 check bits is d8d7d6d5c8d4d3d2c4d1c2c1, where the data bits and the check bits are given in the following tables:
|
Data bits |
|||||||
|
d8 |
d7 |
d6 |
d5 |
d4 |
d3 |
d2 |
d1 |
|
1 |
1 |
0 |
x |
0 |
1 |
0 |
1 |
|
c8 |
c4 |
c2 |
c1 |
|
Y |
0 |
1 |
0 |
Which one of the following choices gives the correct values of x and y?