Your company has a Microsoft Hyper-V Server 2008 R2 environment. You manage the virtual environment by using Microsoft System Center Virtual Machine Manager （VMM） 2008 R2. Virtual machines （VMs） will use Microsoft iSCSI Software Initiator to connect to the shared storage volumes within the guest operating system. You need to configure the VMM host server to optimize the network environment for iSCSI traffic. Which two actions should you perform？（）
- ASet the network adapters to 1454 MTU.
- BSet the network adapters and the supporting infrastructure to support jumbo frames.
- CEnable RX and TX TCP checksum offload support on the network adapters.
- DDisable RX and TX TCP checksum offload support on the network adapters.