CCNP系列認(rèn)證CCNP(642-731)單項(xiàng)選擇題每日一練(2019.03.27)

來源：考試資料網(wǎng)

1 By how much is a signal’s strength reduced when the signal passes through an object thatintroduces 3 dB of attenuation？（）

2 Which class of Cisco access points operate under IEEE 802.3af power？（）

3 In an outdoor bridge link， what is calculated by using this formula： transmitter power + antennagain - insertion OR cable loss（）？

4 Which antenna generally has the narrowest first Fresnel zone in both the horizontal and verticalplanes？（）

5 When surveying for VoWLAN， which power level should you base the access point coverage designon？（）