Answer:
A memory address is a unique identifier used by a device or CPU for data tracking.
Answer:
B. Virtual reality
Explanation:
In a virtual reality context, the visual and auditory senses of the user are fed by data (images, sounds) from the computer using a goggle and earphones. That allows the person to be totally cut off her real physical environment and be totally immersed into the world (reality) managed by the computer.
Not to be confused with<u> augmented reality</u>, where the physical reality and perception of it aren't changed... but an additional layer of information is added on top of it. Like pointing your phone camera to a building and getting information about the building displayed on your phone.
Restrictive policy is a kind of policy calls for a firewall to contradict all traffic by default. The first rule denies all traffic on any service and using any port. To permit a specific type of traffic, a new rule must be placed ahead of the deny all rule. A firewall should enforce the overall policy recognized by the network administrator. Enforcement is controlled mainly over setting up packet filtering rules which is a rule base comprises a set of these rules.
