多项选择题
A. access point certification and software control
B. compression and Layer 3 address mapping
C. Layer 3 addressing and distribution
D. packet encapsulation， fragmentation， and formatting
E. SNMP monitoring services
单项选择题 Aclientissearchingforanaccesspoint（AP）.Whatisthecorrectprocessorderthattheclientandaccesspointgothroughtocreateaconnection？（）
多项选择题 WhichtwostatementsaretrueaboutvoicepacketsinaLAN？（Choosetwo.）（）
单项选择题 Refer to the exhibit. A Cisco Aironet Wireless LAN Client Adapter has been installed and configured through the ADU on the PC. The Aironet System Tray Utility （ASTU） has been enabled during the installation and the icon appears in the system tray area in the lower right of the desktop. What is the significance of the icon？（）