A(n) ________ % transparency fill is clear

_____________________ is a service that delivers hardware networking capabilities, including the use of servers, networking, and storage over the cloud using a pay-per-use revenue model.

A. DaaS B. IaaS C. PaaS D. SaaS

You can ______________ a bastion host by removing unnecessary accounts and services.

Fill in the blank(s) with the appropriate word(s).