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單項(xiàng)選擇題

Which one is the most important based on the following common elements of a network design？（）

A.Business needs
B.Risk analysis
C.Security policy
D.Best practices

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單項(xiàng)選擇題

Which Public Key Cryptographic Standards （PKCS） defines the syntax for encrypted messages andmessages with digital signatures？（）

A.PKCS #7
B.PKCS #8
C.PKCS #10
D.PKCS #12

單項(xiàng)選擇題

Examine the following options，which Spanning Tree Protocol （STP） protection mechanism disables aswitch port if the port receives a Bridge Protocol Data Unit （BPDU）？（）

A.Uplink Fast
B.Port Fast
C.BPDU Guard
D.Root Guard