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

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

It’s a bad to start the trade war. It may harm the world economy. A: police B: policy C: policing D: polite

Media focus may include A: Policing procedures which are close to daily life, The security situation and policing measures in the local area like the household management; the entry and exit of a country; B: Major, serious, and hard cases C: Local community connected security or local crime cases involved news coverage D: Negative news coverage of the law violation

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.

For price discrimination to work ________. A: the market must be segmentable and the segments must show similar intensities of demand B: members in the lower-price segment must be able to resell the product to the higher-price segment C: competitors must be able to undersell the firm in the higher-price segment D: the practice must not breed customer resentment and ill will E: the extra revenue derived from price discrimination must not exceed the cost of segmenting and policing the market