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Will upvote for a good answer to them!

[Select all that apply] What are the some issues with NRZ? 1 's and O's back to back multiple times send a reset signal to the receiver Long streams of 1's can cause desynchronization Long streams of 1's help the clock to stay in time. Long streams of O's hard to differentiate between low signal or no signal NRZ-I Solves NRZ's drawback of too many O's, but does provide a solution when there are too many 1 's. True False In order to solve NRZ-I's fundamental problem, we use a bit-mapping that maps every 4 bit sequence to a 5 bit sequence. True False What is the Data-Link Layer responsible for? Creating IP addresses so that devices may talk to one another Sending electrical signals over a physical medium connecting two devices Recording Session information from an already established connection Sending Blocks of data (frames) between physical devices