题目内容

The MSS is the maximum amount of ____layer data in the segment, not the maximum size of the TCP segment including headers.

Application
B. Transport
C. Networking
D. Link

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____ is the byte stream number of first byte in the segment.

A. Sequence number
B. ACK number
Checksum
D. port number

____ is the byte sequence numbers of next byte expected from other side.

A. Sequence number
B. ACK number
Checksum
D. port number

Because TCP only acknowledges bytes up to the first missing byte in the stream, TCP is said to provide ____ acknowledgements.

A. Cumulative
B. Selective
C. Single
D. Negative

Fast retransmit means in the case that ____ duplicate ACK-s are received, the TCP sender resend segment before timer expires.

A. 3
B. 4
C. 5
D. 6