The antenna obtains the gain by means of .

• A.Use high efficiency antenna feeder
• B.Use low standing wave ratio equipment
• C.Making the antenna radiation more concentrated
• D.Using a power amplifier in the antenna system

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What are the rates that 802.11g can support?

• A.6,9,12,18,24,30,36,48,54 Mbps
• B.1,2,5.5,11&6,9,12,18,24,30,36,48,54 Mbps
• C.1,2,5.5,11&6,9,12,18,24,36,48,54 Mbps
• D.6,9,12,18,24,36,48,54 Mbps

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A company wants to deploy WLAN. The company has purchased a number of wireless APs that support 802.11n. When the WLAN is deployed, only 802.11n wireless clients can connect to the company's WLAN.

• A.False
• B.True

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The number of users is 300, and the concurrency rate is 70%. The terminal supports the 2.4 GHz and 5 GHz frequency bands. According to the maximum number of users per dual-band dual-frequency AP, at least APs can meet the capacity requirements.

• A.5
• B.7
• C.8
• D.6

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What are the technical advantages of 802.11n over 802.11a/b/g?

• A.The other three items are correct
• B.Maximum theoretical transmission rate is increased to 600Mbps
• C.Support MIMO technology
• D.Downward compatible with 802.11a/b/g protocol

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