Answer:
Optical system. An overhead projector works on the same principle as a slide projector, in which a focusing lens projects light from an illuminated slide onto a projection screen where a real image is formed.
Explanation:
Answer:
B. EoP
Explanation:
EoP could be used to network this building as per the scenario given.
Answer:
A) Parentheses
Explanation:
Conditional statements control behavior in JavaScript and determine whether or not pieces of code can run.
There are multiple different types of conditionals in JavaScript including:
If” statements: where if a condition is true it is used to specify execution for a block of code.
“Else” statements: where if the same condition is false it specifies the execution for a block of code.
“Else if” statements: this specifies a new test if the first condition is false.
Now that you have the basic JavaScript conditional statement definitions, let’s show you examples of each.
If Statement Example
As the most common type of conditional, the if statement only runs if the condition enclosed in parentheses () is truthy.
EXAMPLE
if (10 > 5) {
var outcome = "if block";
}
outcome;
OUTPUT
"if block"
Here’s what’s happening in the example above:
The keyword if tells JavaScript to start the conditional statement.
(10 > 5) is the condition to test, which in this case is true — 10 is greater than 5.
The part contained inside curly braces {} is the block of code to run.
Because the condition passes, the variable outcome is assigned the value "if block".
Answer:
c. StringBuilder
Explanation:
An alternative to the String class would be the StringBuilder Class. This class uses Strings as objects and allows you to mix and match different strings as well as adding, removing, implementing, and modifying strings themselves as though they were similar to an array. Unlike the string class StringBuilder allows you to modify and work with a combination of strings in the same piece of data as opposed to having various objects and copying pieces which would take up more memory.
