CCIE系列認(rèn)證CCIE(350-001)多項選擇題每日一練(2019.04.29)

來源：考試資料網(wǎng)

1 Loop guard and UniDirectional Link Detection both protect against Layer 2 STP loops. In which two ways does loop guard differ from UDLD in loop detection and prevention？（）

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2 Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree ProtocolIEEE 802.1 D？（）

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3 Which two statements are true about RED？（）

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4 Which two statements about SA caching are true？（）

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5 Which three protocols should be explicitly managed by using Control Plane Policing on an Internet borderrouter？（）

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