Which of the following information needs to be obtained before network design?

Network design for Campus OptiX or DCI requires, per HCSA-Sales-Transmission & Access:

Project Background and Scope (A): Context and objectives.

Service types and bandwidth requirements (B): Defines capacity needs.

Project Scenario (C): Determines solution type (e.g., hotel, education).

Layout (include cabling) (E): Physical planning.

Construction period (D): Implementation detail, not design prerequisite.

Thus, A, B, C, and E are correct.