Which two statements are true about traffic shaping and traffic policing？（）
A: both traffic shaping and traffic policing cause retransmissions of connection-oriented protocols such as TCP
B: both traffic shaping and traffic policing support the marking and re-marking of traffic
C: the effects of traffic shaping and traffic policing when configured on a router are applied to outgoing traffic
D: traffic shaping queues excess traffic whereas traffic policing discards excess traffic
E: traffic shaping allows the traffic to exceed the bit rate whereas traffic policing prevents the traffic from exceeding the bit rate
A: both traffic shaping and traffic policing cause retransmissions of connection-oriented protocols such as TCP
B: both traffic shaping and traffic policing support the marking and re-marking of traffic
C: the effects of traffic shaping and traffic policing when configured on a router are applied to outgoing traffic
D: traffic shaping queues excess traffic whereas traffic policing discards excess traffic
E: traffic shaping allows the traffic to exceed the bit rate whereas traffic policing prevents the traffic from exceeding the bit rate
C,D
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举一反三
- Which two of these are differences between traffic policing and traffic shaping？（） A: with traffic shaping，a router stores excess traffic in packet buffers until bandwidth is available again B: with policing you can tune the buffer usage for traffic exceeding the specified CIR C: with shaping you can tune the buffer usage for traffic exceeding the specified CIR D: shaping should only be applied for ingress traffic，policing only for egress E: policing uses a token bucket algorithm，shaping uses an SPD algorithm
- Which two characteristics are common between traffic policing and traffic shaping？（） A: The rate of traffic is measured and compared to a configured policy. B: Classification is used to differentiate traffic. C: Traffic is marked and sent out according to priority. D: Both can be applied to inbound and outbound traffic. E: Both buffer traffic to ensure a predetermined traffic rate. F: Both drop traffic that is above a predetermined traffic rate.
- The following are not road traffic signals ( ). A: traffic light B: traffic sign C: traffic information board D: traffic police command
- Children should be taught to read __________ A: traffic signs B: traffic island C: traffic jam D: traffic police
- They didn’t catch the train hecause of ( ) A: some heavy traffic B: any heavy traffic C: a heavy traffic D: heavy traffic
内容
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