System Architecture

Question 1

What are the 3 tiers?

Answer 1

1. Presentation Tier
2. Logic Tier
3. Data Tier

Question 2

What is the PPresentation tier?

Answer 2

The most top level of the application is the user interface. The main function of the interface is to translate tasks and results to something the user can see (what the end-user sees e.g, snapchat interface.)

Question 3

What is the Logic tier?

Answer 3

This layer coordinates the application, processes commands, makes logical decisions and evaluations, and performs calculations. It also moves and processes data between layer 1 and 3.

Question 4

What is the Data tier?

Answer 4

Here information is stored and retrieved from a database or file system. The information is then passed back to the logic for processing, and then eventually back to the user.