Which of the following best describes this type of architecture?

Toby has been asked by his boss to set up a three-tiered configuration within the companys network. Which of the following best describes this type of architecture?

A.
Screened host

B.
Screened subnet

C.
Two screened subnets

D.
Multi-homed architecture

Explanation:
Sometimes a screened-host architecture is referred to as a
single-tiered configuration. A screened subnet is referred to as a two-tiered
configuration. If there are three firewalls that create two separate DMZs, this can
be called a three-tiered configuration.