Which automation tool can you use to automate Junos OS platforms?

You are the network administrator for a large university, and are ready to upgrade your network. You want to solicit multiple vendors for design suggestions to help you define your plan moving forward.
Which two methods should you employ? (Choose two.)

A company asks you to develop a solution to provide secure access to the corporate network with a goal of providing a differentiated security policy per role and per device.
Which three measurements do you need to satisfy the company's requirement? (Choose three.)

What are two benefits of the virtual chassis fabric (VCF) technology? (Choose two.)

When implementing a top-down design methodology, where would you begin collecting information to start the design process?