Misc

Question 1

Roughly how many string methods are there according to the MDN Web docs?

Answer 1

20+

Question 2

Roughly how many array methods are there according to the MDN Web docs?

Answer 2

38+

Question 3

What three-letter acronym should you always include in your Google search about a JavaScript method or CSS property?

Answer 3

MDN

Question 4

What is “abstraction”?

Answer 4

Taking complex things and making them simpler to work with

Question 5

What does API stand for?

Answer 5

application programming interface

Question 6

What is the purpose of an API?

Answer 6

defines interactions between multiple software intermediaries. It defines the kinds of calls or requests that can be made, how to make them, the data formats that should be used, the conventions to follow, etc.

Question 7

What is a client?

Answer 7

Hardware/software that requests a service from a server

Question 8

What is a server?

Answer 8

Runs server programs that share their resources with clients

Question 9

What is a CLI?

Answer 9

Stands for command-line interface,

Used by developers and processes commands to a computer program using text

Question 10

What is a GUI?

Answer 10

Stands for graphical user interface,
Used primarily by the end user and is a form of user interface that allows users to interact with electronic devices through graphical icons

Question 11

Give at least one use case for each of the commands listed in this exercise.

Answer 11

Man: shows a manual for a command
Cat: concatenate txt files
Ls: list contents of a directory
Pwd: print the working directory
Echo: create a text line
Touch: create timestamps
Mkdir: make directories
Mv: rename file
Rm: delete file
Cp: copy and rename files

Question 12

What are the three virtues of a great programmer?

Answer 12

Laziness, hubris, impatience

Question 13

What is a computer process?

Answer 13

The instance of a program that’s being executed by one or many threads.
Execution of instructions provided by programs after they are loaded from the computer’s drive into memory

Question 14

Roughly how many computer processes are running on your host operating system (Task Manager or Activity Monitor)?

Answer 14

450

Question 15

Why should a full stack Web developer know that computer processes exist?

Answer 15

To ensure that the programs they write work efficiently and don’t require too many processes to run

Question 16

What is different between “blocking” and “non-blocking” with respect to how code is executed?

Answer 16

Non-blocking is more efficient because it allows longer processes to happen in the background while other code is being executed, whereas blocking blocks the rest of the code from running until that longer process finishes.
Blocking – things are clogging stack.
Non-blocking – things are also in task queue

Question 17

What is a directory?

Answer 17

A collection of files or other directories

Question 18

What is a relative file path?

Answer 18

A file path relative to the currently accessed file

Question 19

What is an absolute file path?

Answer 19

The complete path to a file starting from the root

Question 20

What is a client?

Answer 20

A program that requests a service from servers (i.e. web browser)

Question 21

What is a server?

Answer 21

Piece of software that shares its resources with clients

Question 22

What is NPM?

Answer 22

• A public software registry which allows users to share and borrow packages
• Consists of three components: the website, the command line interface, and the registry

Question 23

What is a package?

Answer 23

A file or directory with one or more files including a package.json file

Question 24

How can you create a package.json with npm?

Answer 24

Navigate to the root directory of the package, use the command npm init

Question 25

What is a dependency and how to you add one to a package?

Answer 25

• A package required by an application to run

- Can be added after the npm install command

Question 26

What happens when you add a dependency to a package with npm?

Answer 26

It appears in the package.json file under a dependencies property

Question 27

What is “syntactic sugar”?

Answer 27

Syntax that makes code easier to read or use