CCIE系列認(rèn)證CCIE系列認(rèn)證綜合練習(xí)單項(xiàng)選擇題每日一練(2019.01.10)

來源：考試資料網(wǎng)

1 How should arouter that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates?（）

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2 Which standard supports multiple instances of spanning tree？（）

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3 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？（）

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4 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？（）

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5 Refer to the exhibit.What is the meaning of the term dynamic as displayed in the output of the show frame-relay map command shown？（）

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