Lecture 19 Quiz: Block Scope Variables (let, const)

Note

Review before quiz: Lectures | Week 5 Content | Lab 5 | Home Assignment 2

Lecture 19 Self-Check

Question 1: Which syntax is used for JavaScript template literals?

Select an item

A. Single quotes only

B. Double quotes only

C. Backticks with ${} interpolation

D. Angle brackets

Question 2: Which keyword is block-scoped and cannot be reassigned after initialization?

Select an item

A. let

B. const

C. var

D. static

Question 3: What does destructuring allow you to do?

Select an item

A. Splitting CSS files

B. Unpacking values from arrays or objects

C. Repeating loops automatically

D. Sending HTTP requests

Question 4: What is the main use of the spread operator ...?

Select an item

A. It copies and expands arrays or objects

B. It converts strings to numbers

C. It hides function parameters

D. It defines HTML attributes

Question 5: Why are default function parameters useful?

Select an item

A. It runs only in loops

B. It is used when an argument is missing

C. It replaces return

D. It creates global variables