Software development

Question 1

what is a software ?

list some software that we use ?

Answer 1

• A set of instructions, programs and procedures that manipulate the hardware components of a computer

-Google chrome , Adobe , Microsoft office

Question 2

what is software development ?

Answer 2

• software development is the creation of software

Question 3

what are the distinct stages of software development

Answer 3

• Analysis
  -Design
  -Implementation
• Evaluation
  -Maintenance

Question 4

what is analysis in the software development ?

what is design in software development include ?

Answer 4

-In this stage a system analyst gathers information about , what the current system does , and what the new system will do.

• in the software design will include , a description of the data , input screens and output screens and reports

Question 5

what will implementation include ?

Answer 5

implementation will include;
- coding and testing software ,
-writing user and technical documents
- installing the software for the user

Question 6

what are the types of testing strategies ?

Answer 6

• Black Box testing - this is functional testing
  -White box testing - this is structural testing
  -alpha testing- This is testing done by the developers
  -beta testing - This is testing done by potential users , their role is to report their views

Question 7

.

Answer 7

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Question 8

what is evaluation in software software development?

what is maintenance in software development ?

Answer 8

• evaluation in software development is the summary of the program ; does this work.
• maintenance is who will maintan the software once it is finished.
• adaptive
  -corrective
  -perfective

Question 9

what is the waterfall model ?

what are the ADV and DIS-ADV ?

Answer 9

• The waterfall model is software life cycle method that shows the process of software development . Each stage is completed and documented before the next is begun

ADV:
- this method is clear and easy to understand and use
- the project is straight forward to manage

DIS-ADV:
-Costsly , if you make a mistake

Question 10

what is the spiral method ?

what are the ADV and the DIS-ADV ?

Answer 10

• The base steps of analysis , design ,implementation and evaluation and maintenance , however the software projects passes through repeatedly . This creates many PROTOTYPES.

ADV :
-EASY to manage
-software is produced at an early stage
-the user gives feedback after each prototype

DIS-ADV:
-Time consuming
-very costly due to time consuming
not suitable for smaller projects

Question 11

what is the AGILE method ?

What are the ADV and dis- adv

Answer 11

software is developed in rapid incremental cycles and each version builds on previous functionality.

ADV :
- rapid
-customers and developers constantly interact with each other
DIS-ADV :
- Lack of emphasis on necessary design

Question 12

What is recusion?

Answer 12

A subroutine calling itself within its own subroutine

Question 13

What are some difference between recursion and iteration ?

Answer 13

-Recusrion has few lines of code
-Iteration is more memory efficient
-A recusive subroutine could have a stack over flow

Question 14

what is the differnece between blackbox testing and whitebox testing ?

Answer 14

Black box is when the internal structure is not known (to the tester) , whereas whitebox testing is when the internal structure is known to the tester.

Question 15

what is meant by a heuristic approach ?

Answer 15

an approach that tries to find an answer which is close to the optimum solution without the need to computing.

Question 16

what are the benefits of using a subroutine?

Answer 16

• can test independently
  -code can be re-used
  -saves time

Question 17

Describe the steps in an enqueue algorithim?

Answer 17

• the algorithim checks if the queue is full
  -if full, proceed to overflow
  -if not full, add item to the end of the rear pointer

Question 18

list items that may be included in a software prototype ?

Answer 18

• code logic
  -Documentation