0. Logistics
   --> Please start assignment 1 (26 so far).

1. Wrap up retransmission timers
   --> Exponentially Weighted Moving Averages
   --> Online estimation of mean and variance
   --> Lost retransmissions and exponential backoff

2. Sliding window protocol
   --> Modification to sender
   --> Window fragmentation
   --> Buffering out-of-order packets at the receiver
   --> Throughput of sliding window
   --> Right value of W and queueing delay and congestion