Systems week 2

Question 1

Data storage structures design

Answer 1

-Is a critical part of system design
-It focuses on how info is systematically organized, stored and managed with software systems

Question 2

Why design data storage structures

Answer 2

-Enables efficient access, update, and management of system data
-Supports scalability as data and user numbers grow
-Maintains data integrity and accuracy over time
-Facilitates easy maintenance and system updates
-Ensures security, privacy, and compliance with policies

Question 3

Types of data storage structures

Answer 3

-In-memory structures:Temporary storage in RAM for fast access during program execution
-Persistent structures:Long-term storage using files, databases etc

Question 4

Logical vs Physical storage

Answer 4

Logical storage:Conceptual organization
Physical storage:Actual representation on hardware

Question 5

Key design principles

Answer 5

-Abstraction
-Modularity
-Consistency
-Encapsulation
-Efficiency
-Adaptability

Question 6

Abstraction

Answer 6

Hides implementation details behind a simple interface

Question 7

Modularity

Answer 7

Each structure is responsible for specific operations and can be managed independently

Question 8

Consistency

Answer 8

Structures enforce rules and constraints to keep data valid

Question 9

Encapsulation

Answer 9

Internal data is protected, access is controlled via defined methods

Question 10

Efficiency

Answer 10

Design choices optimize speed and memory usage

Question 11

Adaptability

Answer 11

Structures should allow for likely future changes

Question 12

What are user interactions

Answer 12

-Ways users communicate with the system

Question 13

Why user interaction design?

Answer 13

-Reduces user confusion and mistakes
-Increases task efficiency and satisfaction
-Encourages repeat use

Question 14

Good design principles

Answer 14

Simplicity:Keep interfaces clear and easy
Consistency:Use standard layouts and controls
Feedback:Provide clear system responses
Error handling:Allow easy correction of mistakes
Familiarity:Use common terms and controls

Question 15

Planning user interactions

Answer 15

-Start with user goals and tasks
-Create wireframes for key screens
-Choose suitable controls
-Map typical user journeys

Question 16

UI vs UX

Answer 16

UI:User interface-layout,buttons, colours
UX:User experience- overall feel and ease of use

Question 17

Documenting interaction design

Answer 17

-List main screens and user actions
-Specify controls and their purposes
-Include wireframes or screen diagrams
-Describe user flows between screens

Question 18

Testing and improving interactions

Answer 18

-Conduct user testing with real users
-Collect feedback and identify issues
-Refine and retest for better experience