Graded Assessment – Transmission Control Protocol >> TCP/IP and Advanced Topics
Graded Assessment – Transmission Control Protocol
TOTAL POINTS 10
1.When a TCP client initiates a three-way handshake with a sequence number x, what will be the acknowledgement number when the TCP server replies?
1 point
x + 1
x + y (where y is the sequence number proposed by TCP server)
None of the above
2.TCP header has a field called window size. What value is the value window size set to?
1 point
Round-trip delay
Advertised window size for congestion control
Advertised window size for flow control
None of the above
3.In general, there are three phases of congestion behavior, i.e., light traffic, knee, congestion collapse. Which phase does TCP congestion avoidance maps to?
1 point
Light traffic
Knee
Congestion collapse
None of the above
4.When three duplicate acknowledgements arrive before timeout expires, what will TCP congestion control algorithm reset congestion threshold to for fast re-transmission and fast recovery?
1 point
Reset congestion threshold to 1
Reset congestion threshold to half of the current congestion window size
Reset congestion threshold to the current congestion window size
None of the above
5.Assume a TCP source writes a 1200-byte message in one write. Which of following is possible for the destination to receive the message?
1 point
It receives a 1200-byte message in one read
It receives two reads of 600 bytes each
All of the above
It receives three reads of 400 bytes each
6.The process of combining multiple outgoing protocol streams at the Transport and Network layers in TCP/IP is called Multiplexing
1 point
True
False
7.TIMELY provides a framework for rate control that depends on transport layer protocol for reliability
1 point
True
False
8.The operation of TCP congestion control can be divided into three phases, which phase requires that the congestion window size be increased by one segment upon receiving an ACK from receiver
1 point
Congestion avoidance
Slow start
Congestion
None of the above
9.In a router, the control of the transmission rate at the sender’s side such that the router’s buffer will not be over-filled is called _________ if sender is transmitting too fast
1 point
Network under-utilization
Host flooding
Network congestion
None of the above
10.Congestion control is associated with the window size field
1 point
True
False
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