In a cable HFC plant， what is a modulator？（） Set top box。 Diplex filter。 Local head end。 Fiber node。
A customer has deployed a wireless core feature set using autonomous access points and now wants to include a satellite building 4500 feet away from the main campus. The customer also wants to provide wireless access to a courtyard for wireless clients in close proximity to the antenna mounting position. Which Cisco Aironet product is the most applicable solution？（） Cisco Aironet 1000 Series。 Cisco Aironet 1100 Series。 Cisco Aironet 1200 Series。 Cisco Aironet 1300 Series。 Cisco Aironet 1400 Serie。
GPON网络采用（）技术，实现（）双向传输。 WDM，单纤。 TDMA，单纤。 广播，双纤。 TDMA，双纤。
A network administrator needs to configure port security on a switch.which two statements are true?（） The network administrator can apply port security to dynamic access ports。 The network administrator can configure static secure or sticky secure mac addresses in the voice vlan.。 The sticky learning feature allows the addition of dynamically learned addresses to the running configuration.。 The network administrator can apply port security to EtherChannels.。 When dynamic mac address learning is enabled on an interface,the switch can learn new addresses,up to the maximum defined.。
在邮件地址mackenzre@pit.arc.nasa.gov中，（）表示域名。 Mackenzre。 pit.arc.nasa.gov。 mackenzre@pit.arc.nasa.gov。
《棉被》的作者是？（）
