In the following four descriptions, which one is correct?
A. If one host’s transport layer uses TCP, then its network layer must use virtual-circuit network.
B. Datagram network provides connection service
C. The transport-layer connection service is implemented in the router
D. The network-layer connection service is implemented in the router as well as in the end system.
查看答案
There are 6 flag fields. Which one is to indicate that the receiver should pass the data to the upper layer immediately?
A. PSH
B. URG
C. ACK
D. RST
Suppose the TCP receiver receives the segment that partially or completely fills in gap in received data, it will ____.
A. immediately send ACK
B. immediately send duplicate ACK
C. wait some time for arrival of another in-order segment
D. send single cumulative
_____ imposes constrain on the rate at which a TCP sender can send traffic into the network.
A. sliding window
B. congestion window
C. receive window
D. variable window
This job of delivering the data in a transport-layer segment to the correct socket is called ____.
A. multiplexing
B. de-multiplexing
C. forwarding
D. routing
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