Before you are called to testify as an expert, what must an attorney do first?

For the purpose of preserving the evidentiary chain of custody, which of the following labels is not appropriate?

What does the Rule 101 of Federal Rules of Evidence states?

Which of the following acts as a network intrusion detection system as well as network intrusion prevention system?

George is a senior security analyst working for a state agency in Florid a. His state's congress just passed a bill mandating every state agency to undergo a security audit annually. After learning what will be required, George needs to implement an IDS as soon as possible before the first audit occurs. The state bill requires that an IDS with a "time-based induction machine" be used.
What IDS feature must George implement to meet this requirement?