CH 14

Question 1

What is the main difference between VR and AR?

Answer 1

AR users stay in real-world environment while interacting with objects, while VR users are immersed in the virtual world.

Question 2

What are 2 major types of user environments in VR?

Answer 2

• Egocentric

- Exocentric

Question 3

What are three applications of RFID?

Answer 3

• Tracking and Identification
• Payment and stored-value systems
• Access Control
• Anticounterfeiting
• Healthcare

Question 4

Define utility (on-demand) computing.

Answer 4

The provision of IT services on demand. Users pay for computing or storage resources on an as-needed basis, similar to the way one pays for utilities such as heat and water.

Question 5

What are 2 advantages of edge computing over cloud computing?

Answer 5

• Real-time data analysis at the edge (any device connected to network) no in a remote data center or cloud
• Lower operating costs due to smaller operational and data management expenses of local devices

Question 6

What is the difference between multicloud and hybrid cloud?

Answer 6

• Hybrid cloud environment is a collection of at least one private and one public cloud. There are a variety of public and private options, with multiple providers.
• Multicloud refers to using more than a single public cloud in an organization.

Question 7

Define blockchain technology. What are 2 applications of this technology?

Answer 7

• Block chain is a decentralized and distributed network that is used to record transactions across connected devices as blocks of data that cannot be altered after being recorded.
• Track goods or services
• Improve health record integrity

Question 8

What are 2 advantages and two disadvantages of a cryptocurrency?

Answer 8

Advantages:
     - Immediate settlement
     - available to anyone with a smartphone and internet
Disadvantages: 
     - Not widely accepted
     - No way to reverse payment