You are the administrator of an Active Directory domain. The network contains a Windows Server 2003 domain controller named Server1Users report that they experience intermittent delays when they log on to Server1. Administrators report that replication attempts between Server1 and other domain controllers are occasionally delayed.You need to verify the cause of the intermittent connection delays to Server1. You also need to find out whether the problem is related to a hardware deficiency on Server1. You need to track these delays over a period of one day.   What should you do first？（）

• A、Run the netdiag /verbose command to perform a network diagnostic test on Server1.
• B、Run the replmon command to view the Active Directory replication status on Server1.
• C、Use Network Monitor to view the network traffic packet contents between Server1 and all other computers.
• D、Create a System Monitor counter to track the queue lengths on the network adapter on Server1.