Physical Segmentation

Question 1

Out of Band

Answer 1

physically separating network infrastructure into distinct security zones using hardware. Alternate communication paths for different types of traffic

Question 2

Air Gap

Answer 2

Complete physical isolation of a nework by having no wired or wireless connections. Common in high security government networks and critical infrastructure (utilities, etc)

Question 3

In Band

Answer 3

Separating Network segments by configuring routers, switches, firewalls, etc traffic flow. Techniques include subnets and VLANs