2022计算机类考试思科认证试题共用题干题答案(08.03)

1. [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. F. The hosts will do nothing, as the higher layers are responsible for data error correction and re-transmission.

2. [单选题]“ipaccess-group”命令在接口上缺省的应用方向是什么"（）。

A. in
B. 具体取决于接口应用哪个访问控制列表
C. out
D. 无缺省值

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