Architecture Style

Question 1

System Architecture

Answer 1

defines a network of processes that work together to produce an outcome. It includes elements of both software and hardware and is used ot enable design of a composite system.

Question 2

Software Architecture

Answer 2

defines the logical model of a computer system. It refers to the logiccal organization of a distributed system into software components

Question 3

Original Monolith

Answer 3

Software is compiled code running on one machine. Self-contained and does everything. Softtwares data is stored bytes on the same machine. Ex includes mainframes and old school installed computer software

Question 4

Client Server Architectures

Answer 4

Each entity has exactly one role, service provider or service consumer. Service providers wait for and then respond to requests. Service consumers initiate requests. Ex includes the world wide web “old school style”. Server contains all of the processing and UI logic, serves pages to client

Question 5

Advantages of Client-Server Architectures

Answer 5

Centralized server control, easier to secure than other models. Cleitns can use different platforms from each other and from server

Question 6

Disadvantages of Client-Server Architectures

Answer 6

Single point of failure. Too many simultaneous client requests can overload a single server

Question 7

Layered Architectures

Answer 7

Entities are grouped based on the functionality that they provide. Each layer hides all the layers above and below

Question 8

Classic three tiers of layered architectures

Answer 8

Presentation(Front end)
Application logic
Storage(Backend)

Question 9

N-Tiers/Multilayered Architectures

Answer 9

The processing logic layered
Different layers may reside on different machines

Question 10

Advantages of layered architectures

Answer 10

Improved cohesion which allows for multiple physical deployment options. Decreased coupling which promotes re-use
Specialized expertise (by level)