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【单选题】
( )---- Thanks a lot ________ us. ---- Not at all.A.
of helping
B.
for helping
C.
of help
D.
for help
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反馈参考答案：
举一反三
【判断题】Host A is sending Host B a large file over a TCP connection. Assume Host B has no data to send Host A. Host B will not send acknowledgments to Host A because Host B cannot piggyback the acknowledgment...
A.
正确
B.
错误
【简答题】园林规划设计的一般程序包含哪几个阶段?
【单选题】Suppose there is exactly one packet switch between a sending host and a receiving host. The transmission rates between the sending host and the switch and between the switch and the receiving host are...
A.
L/R 1 +L/R 2
B.
L/R 1
C.
L/R 2
D.
none of the above
【单选题】Which of the following protocols would be used to test if one host is reachable by another host， by sending echo requests and waiting for echo replies？（）
A.
SNMP
B.
ICMP
C.
TCP
D.
UDP
【判断题】Suppose Host A is sending Host B a large file over a TCP connection. The number of unacknowledged bytes that A sends cannot exceed the size of the receive buffer.
A.
正确
B.
错误
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