CCNA系列認(rèn)證多項選擇題每日一練(2020.04.27)

XYZ LTD wants to connect Cisco IP Phones and Cisco Aironet Access Points to the network. The customer also wants to use the PoE features included in the Cisco Catalyst Express 500 Series Switches.
Which two models can provide this features?（）

Refer to the exhibit.Which three statements correctly describe Network Device A？（）

An administrator is unsuccessful in adding VLAN 50 to a switch. While troubleshooting the problem，the administrator views the output of the show vtp status command， which is displayed in the graphic. What commands must be issued on this switch to add VLAN 50 to the database？（）