Transport Layer Protocol
Q2.
Which algorithm is used to shape the bursty traffic into a fixed rate traffic by averaging the data rate?Q3.
While opening a TCP connection, the initial sequence number is to be derived using a time-of-day (ToD) clock that keeps running even when the host is down. The low order 32 bits of the counter of the ToD clock is to be used for the initial sequence numbers. The clock counter increments once per millisecond. The maximum packet lifetime is given to be 64s. Which one of the choices given below is closest to the minimum permissible rate at which sequence numbers used for packets of a connection can increase?Q4.
Which of the following transport layer protocols is used to support electronic mail?Q6.
Consider the following statements about the timeout value used in TCP. i.The timeout value is set to the RTT (Round Trip Time) measured during TCP connection establishment for the entire duration of the connection. ii.Appropriate RTT estimation algorithm is used to set the timeout value of a TCP connection. iii.Timeout value is set to twice the propagation delay from the sender to the receiver. Which of the following choices hold?Q9.
Assuming that for a given network layer implementation, connection establishment overhead is 100 bytes and disconnection overhead is 28 bytes. What would be the minimum size of the packet the transport layer needs to keep up, if it wishes to implement a datagram service above the network layer and needs to keep its overhead to a minimum of 12.5%. (ignore transport layer overhead)Q10.
For a host machine that uses the token bucket algorithm for congestion control, the token bucket has a capacity of 1 megabyte and the maximum output rate is 20 megabytes per second. Tokens arrive at a rate to sustain output at a rate of 10megabytes per second. The token bucket is currently full and the machine needs to send 12megabytes of data. The minimum time required to transmit the data is _____seconds.