[单项选择]

Flow control is a function that prevents network congestion by ensuring that (66) do not over-whelm (67) with data. There are three commonly used methods for handling network congestion. (68) is used by network devices to temporarily store bursts of excess data in memory until they can be processed. (69) are used by receiving devices to help prevent their buffers from overflowing. (70) is a flow-control scheme in which the source device requires an acknowledgment from the destination after a certain number of packets have been transmitted.

（68）是（）
A. Buffer
B. Source-quench messages
C. window
D. Windowing
E. Buffering

[单项选择]

Flow control is a function that prevents network congestion by ensuring that (66) do not over-whelm (67) with data. There are three commonly used methods for handling network congestion. (68) is used by network devices to temporarily store bursts of excess data in memory until they can be processed. (69) are used by receiving devices to help prevent their buffers from overflowing. (70) is a flow-control scheme in which the source device requires an acknowledgment from the destination after a certain number of packets have been transmitted.

（66）是（）
A. transmitting devices
B. transmitted devices
C. receiving devices
D. received devices

[单项选择]Those who control advertising control culture by controlling what we spend our money on and what our values and lifestyles are.（）
A. 控制广告的人可以控制文化，其对文化的控制是通过控制我们的消费取向、自身价值和生活方式来实现的。
B. 那些人同时控制着广告和文化，从而进一步控制了我们的消赞方式，自身价值和生活方式。
C. 控制广告的人通过控制我们的消费取向、价值观和生活方式来控制文化。
D. 那些控制广告的人也控制着文化，因为他们控制着我们的消费方式、价值观和生活方式，

[填空题]

A．window
B．flow
C．flower
D．know

[单项选择]The Perform Integrated Change Control process is conducted from project inception through completion and is the ultimate responsibility of the ______.
A. Chang control board
B. Project management office
C. Project manager
D. Configuration management officer

[单项选择]NAC’s (Network Access Control) role is to restrict network access to only compliant endpoints and (81) users. However, NAC is not a complete LAN (82) solution; additional proactive and (83) security measures must be implemented. Nevis is the first and only comprehensive LAN security solution that combines deep security processing of every packet at 100Gbps, ensuring a high level of security plus application availability and performance. Nevis integrates NAC as the first line of LAN security (84) In addition to NAC, enterprises need to implement role-based network access control as well as critical proactive security measures-real-time, multilevel (85) inspection and microsecond threat containment.

A. constructive
B. reductive
C. reactive
D. productive