CCNA系列認證CCNA(640-553)單項選擇題每日一練(2019.01.25)

來源：考試資料網(wǎng)

1 Information about a managed devices resources and activity is defined by a series of objects. What defines the structure of these management objects？（）

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2 For the following statements， which one is the strongest symmetrical encryption algorithm？（）

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3 You are a network technician at Certpaper.com. Which description is correct when you have generated RSA keys on your Cisco router to prepare for secure device management？（）

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4 Which statement is true about a Smurf attack？（）

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5 You work as a network engineer， do you know an IPsec tunnel is negotiated within the protection of whichtype of tunnel？（）

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