TV channels are 6 MHz wide. How much data can be sent per second, if four-level digital signals are used? Assume a noiseless channel, and use the Nyquist limit.

What signal to noise ratio is needed to get a bit rate of 2 Mbps (mega bits per second) on a channel with 1MHz bandwidth?
Hint: Use Shannon limit

What characteristic of the network would you care most about to get good performance for the following activity:
-Navigating a predominantly text-only website.
-Downloading a large video file.
-A remote shell application (such as telnet or SSH).

To provide more reliability than a single parity bit can give, an error-detecting coding scheme uses one parity bit for checking all the odd-numbered bits and a second parity bit for all the even-numbered bits. What is the Hamming distance of this code?

A bit string, 0111101111101111110, needs to be transmitted at the data link layer. What is the string actually transmitted after bit stuffing? Use the bit-stuffing technique discussed in lecture (where the flag is six consecutive 1's).

In your answer, write the encoded binary string.