Section 15.138 Network Infrastructure

Question 1

Network Infrastructure

Answer 1

Backbone of modern organisations which comprises hardware, software, services, and facilities for network support and
management

Question 2

aka Air Gapping

Physical Separation

Answer 2

A security measure to protect sensitive information. (One of the most secure but not perfect)

■ Isolates a system by physically disconnecting it from all networks

■ Physical separation is one of the most secure methods of security, but it is still
vulnerable to sophisticated attacks

Example - Industrial Control System (ICS) used in critical infrastructure like power plants or water treatment facilitites to try an oprevent cyber attacks which could cause real world damage.

Question 3

Logical Separation

Answer 3

Creates boundaries within a network to restrict access to certain areas

■ Implemented using firewalls, Virtual Local Area Networks, and network devices

VLANs can segreate network traffic ensuring data from one department cant be accessed by another despite being on the same physical network

Question 4

Physical Separation (Air-Gapping) v Logical Separation

Comparison

Answer 4

Physical Separation (Air-Gapping)

● High security, complete isolation

Logical Separation

● More flexible, easier to implement
● Less secure if not configured properly