Software Development - Software Design

Question 1

What is Software development?

Answer 1

he process of building software, starting with the original idea and ending with a high-quality working product. This process is also known as the software development life cycle (SDLC)

Question 2

What are the phases of the SDLC

Answer 2

Requirements & Analysis
Design
Implementation
Testing
Deployment
Maintenance

Question 3

Describe the first phase of the SDLC

Answer 3

Requirements and analysis - the product owner and qualified team members gather the requirements for the software to be built

Question 4

Describe the second phase of the SDLC

Answer 4

Design - the software architects and developers design the software based on the provided SRS

Question 5

Describe the implementation phase of the SDLC

Answer 5

the developers take the design documentation and develop the code according to that design

Question 6

Describe the testing phase

Answer 6

test engineers take the code and install it into the testing environment so they can follow the test plan.

Question 7

Describe the Deployment phase

Answer 7

the software is installed into the production environment

Question 8

Describe the Maintenance phase

Answer 8

Provides support for customers
Fixes bugs found in production
Works on software improvements
Gathers new requests from the customer

Question 9

What are the three common software methodologies?

Answer 9

Waterfall
Agile
Lean

Question 10

Describe Waterfall Software development

Answer 10

the process goes in one direction, and can never go backward

Question 11

Describe Agile software development

Question 12

What does the command pip freeze do?

Answer 12

Shows the available packages and their version

Question 13

What command allows you to create a virtual env in python

Answer 13

python -m venv [name of venv]

Question 14

Why should you make a venv whenever you want to install any packages?

Answer 14

Sometime there are dependicies that may interfere with other packages

Question 15

what command deactivates a venv?

Answer 15

deactivate

Question 16

What does a requirements.txt file do

Answer 16

Shows all of the packages that are needed for that specific venv to work

Question 17

what does the command pip install -r requirements .txt do?

Answer 17

installs all of the packages of that particular venv

Question 18

Describe creational patterns

Answer 18

used to guide, simplify, and abstract software object creation at scale

Question 19

Describe structural patterns

Answer 19

Patterns describing reliable ways of using objects and classes for different kinds of software projects.

Question 20

Describe behavioral patterns

Answer 20

Patterns detailing how objects can communicate and work together to meet familiar challenges in software engineering.

Question 21

Describe observer pattern

Answer 21

a subscription notification design that lets objects (observers or subscribers) receive events when there are changes to an object (subject or publisher) they are observing

Question 22

What are the three things needed for an observer pattern to work

Answer 22

The subject must have the ability to store a list of all of its observers.

The subject must have methods to add and remove observers.

All observers must implement a callback to invoke when the publisher sends a notification, preferably using a standard interface to simplify matters for the publisher. This interface needs to declare the notification mechanism, and it needs to have parameters for the publisher to send the necessary data to the observer.

Question 23

Describe a MVC pattern

Answer 23

mplify development of applications that depend on graphic user interfaces. MVC abstracts code and responsibility into three different components: model, view, and controller.

Question 24

What is the model in a MVC

Answer 24

the application’s data structure and is responsible for managing the data, logic and rules of the application. It gets input from the controller.

Question 25

What is the view in MVC

Answer 25

visual representation (the presentation) of the data

Question 26

What is the controller

Answer 26

akes in user input and manipulates it to fit the format for the model or view.