Question

Answer with True or False for these questions and if you answered false explain why

1, Shannon’s capacity is doubled whenever the signal power is doubled.

2, the Datalink layer is dealt with at only the source and destination nodes and not by intermediate nodes.

3, The transport layer is dealt with at every intermediate node.

4, Stop-and-Wait flow control works best when the frame transfer time is much larger than the propagation time.

5, In Manchester encoding, each signal element carries one bit.

Answer 1

1.false

reason : shannon's capacity is directly proportional to the log(signal power).so it doesn't double.

2.false

reason: In data link layer framing is done.so while transmitting the data encapsulation and decpsulation occurs at every node (including source,destination and intermediate nodes) in the network.At every intermediate node it decapsulate the frame for the physical address.

3. false

reason : The transport layer is dealt only at source and destination.The transport layer includes segmentation.the segments has the protocol type i.e tcp or udp it doesn't include IP addresses.so the intermediate nodes has no use of protocol type for transmitting to the other node.The main goal of transport layer is to acheive multiple process at the end systems which cannot be done in the network.

4.true.

5.true.