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【单选题】
以太网中,当数据传输率提高时,帧的发送时间就会相应的缩短,这样可能会影响到碰撞的检测。为了能有效地检测碰撞,可以使用的解决方案有( )
A.
减少电缆介质的长度或减少最短帧长
B.
减少电缆介质的长度或增加最短帧长
C.
增加电缆介质的长度或减少最短帧长
D.
增加电缆介质的长度或增加最短帧长
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【多选题】Which of the following statemets regarding Control Plane Policing (CoPP) is correct?()
A.
Control Plane Policing (CoPP) addresses the need to protect the management planes, ensuring routingstability, availability, and critical packet delivery.
B.
Control Plane Policing (CoPP) leverages MQC to define traffic classification criteria and to specifyconfigurable policy actions for the classified traffic.
C.
Control Plane Policing (CoPP) uses a dedicated "control-plane" command via the Modular QoS CLI (MQC)to provide filtering and rate limiting capabilities.
D.
Control Plane Policing (CoPP) uses "service policy" command under relevant interfaces to filter DOS packet to protect routing packets.
E.
Control Plane Policing (CoPP) protects the transit management and data traffic through the router.
【单选题】新民主主义的经济纲领是:没收封建地主阶级的土地归农民所有,没收官僚资产阶级的垄断资本归新民主主义国家所有,( )。
A.
发展经济,保障供给
B.
消灭民族资本主义
C.
建立社会主义国营经济
D.
保护民族工商业
【单选题】_________ a cinema at the corner of King Street, but it closed a few days ago.
A.
There used to be
B.
There used to have
C.
It used to have
D.
It used to be
【简答题】计算日平均流量的日分界是从 _ _ 时至 时。
【单选题】Once you become a soldier, you will be given a monthly ______ by the army.
A.
income
B.
allowance
C.
wage
D.
salary
【单选题】The room was bare of furniture______a few chairs.
A.
except for
B.
except
C.
besides
D.
not with excepting
【单选题】You will be given a ticket if you ______ the speed limit.
A.
proceed
B.
exceed
C.
succeed
D.
precede
【多选题】Which of the following comparison of Control Plane Policing (CoPP) with Receive ACL(Racl) is correct?()
A.
CoPP protects against IP spoofing;Racl protects against DoS attacks.
B.
CoPP can not use named access lists;Racl can use named access lists
C.
CoPP applies to a dedicated control plane interface;Racl applies to all interfaces.
D.
CoPP needs a AAA server,Racl does not need a AAA server
E.
CoPP supports rate limits;Racl does not support rate limits
【简答题】If you complete this course successfully,you may be given a job.
【判断题】2001年2月19日某建筑施工队在某城市—街道旁的一个旅馆工地拆除钢管脚手架。钢管紧靠建筑物,临街面架设有10kV的高压线,离建筑物只有2m。由于街道狭窄,暂无法解决距离过近的问题。上午下过雨。安全员向施工工人讲过操作方式,要求立杆不要往上拉,应该向下放。 下午上班后,在工地二楼屋面“女儿墙”内继续工作的泥工马某和普工刘某在屋顶上往上拉已拆除的一根钢管脚手架立杆。向上拉开一段距离后,马、刘以墙棱...
A.
正确
B.
错误
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