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【判断题】
3043 记账方法就是复式记账法。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】On a half-duplex Ethernet LAN, two hosts attempt to send data simultaneously,resulting in a collision. Following this collision, what will the hosts do?（）
A.
The destination host sends a request to the source for retransmission.
B.
The jam signal indicates that the collision has been cleared.
C.
The hosts will attempt to resume transmission after a time delay has expired.
D.
An electrical pulse indicates that the collision has cleared.
E.
The router on the segment will signal that the collision has cleared.
F.
The hosts will do nothing, as the higher layers are responsible for data error correction and re-transmission.
【简答题】A signal source has an open-circuit voltage of 10mV and a short-circuit current of 10μA. The source resistance is kΩ
【单选题】On a half-duplex Ethernet LAN, two hosts attempt to send data simultaneously, resulting in a collision. Following this collision, what will the hosts do? (Select all valid answers)
A.
The destination host sends a request to the source for retransmission.
B.
The jam signal indicates that the collision has been cleared.
C.
The hosts will attempt to resume transmission after a time delay has expired.
D.
An electrical pulse indicates that the collision has cleared.
E.
The router on the segment will signal that the collision has cleared.
F.
The hosts will do nothing, as the higher layers are responsible for data error correction and re-transmission.
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