ADV PROG DAY 2

Question 1

store information that can be easily referenced and manipulated in a script and provide a way of labeling a type of data with a descriptive name, so scripts are easily understood by a reader.

Answer 1

Variables

Question 2

state that identifiers can only contain numbers, letters, and underscores, but cannot begin with a number.

Answer 2

variable naming conventions

Question 3

an orderly arrangement of data values also known as a collection of values.

Answer 3

array

Question 4

References a position in an array/list. The first available index position is always index zero.

Answer 4

Index

Question 5

The actual value in the array/list. The first element in the list is always element one.

Answer 5

Element

Question 6

is the blueprint that defines the abstract details of a thing.

Answer 6

class

ATTRIBUTES AND BEHAVIORS

Question 7

known as an instance of a class and does not exist until the programmer creates or instantiates the object.

Answer 7

object

CHARACTERISTICS AND METHODS

Question 8

provides a means to access the data and methods of an object.

Answer 8

Dot notation

Question 9

method of temporarily changing a value from one data type to another to ensure a function correctly processes a variable. It does not change a variable’s data type permanently.

Answer 9

Typecasting

Question 10

A variable defined in the main body of asource code file

is readable and modifiable throughout the entire source code.

Answer 10

Global Variables

Question 11

A variable declared inside a code block is local to that block of code. It is readable and modifiable from the point at which it is declared until the end of the code block. It exists for as long as the code block is executing.

Answer 11

Local Variables

Question 12

local scope refers to variables declared within the current session of the shell interpreter,and their values are only accessible in that specific session.

Answer 12

Shell Environments

Question 13

Redirect and write to a file. Defaults to the STDOUT data stream. Stream numbers can optionally specify a different source

Answer 13

>

Question 14

Redirect and append to a file. Defaults to the STDOUT data stream. Stream numbers can optionally specify a different source

Answer 14

> >

Question 15

Redirect one data stream to another (e.g., 2>&1redirects both STDOUT and STDERR to the same place).

Answer 15

> &

Question 16

Redirect STDIN to come from a file. Not available in PowerShell.

Question 17

Redirect STDOUT of one command to STDIN of another command.

Answer 17

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