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單項(xiàng)選擇題What is the default maximum reservable bandwidth （percentage） by any single flow on an interface after enabling RSVP？（）

A.75 percent
B.60 percent
C.56 percent
D.50 percent
E.25 percent

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1.問答題網(wǎng)絡(luò)安全涉及到OSI哪幾層？

參考答案：Layer 7：application layer
Layer 6：presen...

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2.單項(xiàng)選擇題You are responsible for network monitoring and need to monitor traffic over a routed network from a remote source to an IDS or IPS located in the headquarters site. What would you use in order to accomplish this？（）

A.VACLs and VSPAN
B.RSPAN
C.ERSPAN
D.NetFlow

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3.單項(xiàng)選擇題Which of the following describes the appropriate port assignment and message exchange in a standard TFTP transaction？（）

A.Server： 10.0.0.1：69 RRQ/WRQ Sent；Client： 10.0.0.2：1888 RRQ/WRQ Received
B.Server： 10.0.0.1：1888 RRQ/WRQ Received；Client： 10.0.0.2：69 RRQ/WRQ Received
C.Server： 10.0.0.1：69 RRQ/WRQ Received；Client： 10.0.0.2：69 RRQ/WRQ Sent
D.Server： 10.0.0.1：69 RRQ/WRQ Received；Client： 10.0.0.2：1888 RRQ/WRQ Sent
E.Server： 10.0.0.1：1888 RRQ/WRQ Sent；Client： 10.0.0.2：69 RRQ/WRQ Sent
F.Server： 10.0.0.1：1888 RRQ/WRQ Received；Client： 10.0.0.2：69 RRQ/WRQ Sent

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4.問答題網(wǎng)絡(luò)安全涉及到TCP/IP哪幾層？

參考答案：Layer 1 （Network interface LayerQ...

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5.單項(xiàng)選擇題You are deploying two core switches，one in each building，50 km away from each other. The cross-connection between them will be a Layer 2 2-gigabit EtherChannel with an 802.1Q trunk. You configured it correctly but the link does not come up. The port is in the "admin up" state，and the line protocol is in the "down" state. The fiber link is OK. What would be the most likely reason for the link not to come up？（）

A.The switches are not the same model.
B.You are not using the correct SFP.
C.You are not using correct optical media converters.
D.Configuration should be modified， because the distance is longer.

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