单项选择题 VLAN 3 is not yet configured on your switch.What happens if you set the switchport access vlan 3 commmand interface configuration mode?（）

单项选择题 The network administrator is asked to configure 113 point-to-point links.Which IP addressing scheme best defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses?（）

单项选择题 Which component of VPN technology ensures that data can be read only by its intended recipient?（）