A communication link has a bit rate of 1 Gbps and a length of 60 km. Propagation velocity is 2.5 x 108 m/s and ACK frames are piggybacked on information frames one ACK every 5 received frames. Information frames are 1000 bytes long and header is 20 bytes. What is the information effective bit rate if the window size is 30 frames assuming no errors? Show a timing diagram and derive your calculation for full marks. (Variation: repeat with window size equal to 80) ormatEEE & Explain how IEEE 802.1Q virtual LANs are organized. What modification is macd