031: Software Development and Web Technologies

Question 1

What kind of program can be used to edit source code?

Answer 1

Any program capable of editing plain text.

Question 2

What kind of tool helps to integrate the work of different developers into the same code base?

Answer 2

A source or version control system, such as Git.

Question 3

Suppose you want to write a 3D game to be played in the browser. Web apps and games are
programmed in JavaScript. Although it is possible to write all the graphic functions from
scratch, it is more productive to use a ready-made library for this purpose. Which third-party
libraries provide capabilities for 3D animation in JavaScript?

Answer 3

There are many options for 3D graphics libraries for JavaScript, such as threejs and BabylonJS.

Question 4

Besides PHP, what other languages can be used on the server side of a web application?

Answer 4

Any language supported by the HTTP server application used on the server host. Some
examples are Python, Ruby, Perl, and JavaScript itself.

Question 5

A programmer normally develops an application by writing a textual description, called

Answer 5

source code

Question 6

The source code is in a carefully defined “programming language” that represents what the computer can do in a high-level abstraction humans can understand.

Answer 6

programming language

Question 7

In the case of source code, the “reader” is the machine, so the text cannot contain

Answer 7

ambiguities or inconsistencies—even subtle ones

Question 8

What is described as plain text files

Answer 8

source code

Question 9

Common File extensions
C
Python
JavaScript

Answer 9

.c
.py
.js

Question 10

Alternate way to edit source code that provides a text editor along with toos to help the programmer avoid syntactic errors and obvious inconsistencies.
VS
Eclipse
Xcode

Answer 10

Integrated Development Environment (IDE)

Question 11

Allow each developer on the team to work on a copy of the source code files without interfering with the work of the programmers
Git

Answer 11

Version Control

Question 12

Programming languages are distinguished from eachother by deep conceptual approaches they represent known

Answer 12

paradigms

Question 13

Paradigms define the premises on which a progamming language is based, especially concerning how the source code is

Answer 13

structured

Question 14

instructions presented in the source code are executed in sequential order like a movie script

Answer 14

procedural

Question 15

Main characteristic is the separation of the program state into independent sub-states

Answer 15

OOP
Object Oriented Programming

Question 16

The sub-states of OOP have more or less independent existence within the program and because they have specific purposes.

Answer 16

Objects

Question 17

Introduces the definition of an object that contains variables and subroutines

Answer 17

class

Question 18

Also known as an attribute

Answer 18

variable

Question 19

Also known as a subroutine

Answer 19

method

Question 20

receives a copy of all the information necessary for its execution and always produces the same result for the parameter, regardless of changes that happen outside of the function’s scope

Answer 20

function

Question 21

Describes the states you want the system to be in and can figure out how to achieve the specified states.

Answer 21

Declarative languages

Question 22

Universal language for querying databases is known as a declarative language although it occupies a unique niche in the programming pantheon

Answer 22

SQL

Question 23

Web browsers are also known as

Answer 23

client side
or
front end

Question 24

This end of the application handles requests FROM the browser and is normally programmed in a different language like PHP

Answer 24

server side
or
back end

Question 25

Regardless of paradigm each language has these incorporated into code

Answer 25

pre-built libraries of functions

Question 26

Allow among other things the incorporation of pre-compiled features in machine language and compiled libraries

Answer 26

Compiled Languages

Question 27

compiled languages the produce a program in a format generally called - not a platform-specific language and it requires an interpreter program that translates into machine language.

Answer 27

bytecode

Question 28

interpreter programs are also known as

Answer 28

runtime

Question 29

Bytecode is closer to machine language than source code so its execution tends to be comparatively faster

Answer 29

than source code

Question 30

In interpreted languages such as JavaScript, Python, and PHP, the program does not need to be instead of compiling it the script is executed by an interpreter.

Answer 30

precompiled, making it easier to develop and modify it

Question 31

Interpreter of a language is named after
python - python
javascript - node (outside of a browser)

Answer 31

the language itself

Question 32

Nothing prevents the same app from having components written in different languages and can communicate through a mutually understandable

Answer 32

Application Programming Interface (API)