Which action increases server availability？（）

• A、 configuring a second network card with a different IP address
• B、 replacing the existing 100 Mbps NIC with a gigabit Ethernet NIC
• C、 using adapter teaming and configuring the second network card with the same IP address as the first network card
• D、 installing a dual-port network card that can handle the future growth and setting one NIC to 10 Mbps and one NIC to 100 Mbps