Which key is used to access the one-time boot menu when preparing a Dell EMC PowerEdge server?

An IT architect is asked to provide a Dell EMC modular infrastructure that offers the most powerful and scalable computing capabilities and works with virtually any network, storage, or management infrastructure.
Which product should they choose?

What server types offer more disk drives and expansion slots and are the most cost effective within the Dell portfolio?

Based on the exhibit, which type of virtual switch is vSwitch1?

What is a characteristic of server and user authentication?