题目内容

The UDP header has only four fields, they are____.

A. Source port number, destination port number, length and checksum
B. Source port number, destination port number, source IP and destination IP
C. source IP, destination IP, source MAC address and destination MAC address
D. source IP, destination IP, sequence number and ACK sequence number

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There are two 16-bit integers: 1110 0110 0110 0110, 1101 0101 0101 0101. Their checksum is____.

A. 0100010001000011
B. 1011101110111100
C. 1111111111111111
D. 1000000000000000

The maximum amount of data that can be placed in a segment is limited by the____.

A. Maximum segment size (MSS)
B. MTU
Checksum
D. Sequence number

The MSS is typically set determining the length of the largest link-layer frame that can be sent by the local sending host----the so-called____.

A. Maximum transmission unit (MTU)
B. MSS
Checksum
D. Sequence number

A File size of 500,000bytes, MSS equals 1000bytes. When we want to transmit this file with TCP, the sequence number of the first segment is 0, and the sequence number of the second segment is ____.

A. 1000
B. 999
C. 1001
D. 500000