單項(xiàng)選擇題

Which of the following security threats involves making phone calls?（）

A.Phishing
B.Vishing
C.DDoS
D.Xmas attack

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單項(xiàng)選擇題

When setting up a wireless network to cover a large area, which of the following needs to beconsidered FIRST?（）

A. Device placement
B. Encryption methods
C. Wireless channels
D. SSID name

單項(xiàng)選擇題

On a network switch, which of the following is the default native VLAN?（）

A.0
B.1
C.1024
D.4096