【填空题】
39.每年九月的___星期六为“全民国防教育日”。
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第三个
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Which type of Layer 2 attack enables the attacker to intercept traffic that is intended for one specific recipient？___
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.If an access port is assigned as an isolated port in a PVLAN， which network ports can it communicate with？___
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Which feature defines a campus area network？ ___
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