Data Structures & Algorithms — Prelim Exam

Arrays in JavaScript are always fixed in size.

• True
• False

Elements in an array are stored at contiguous memory locations.

• True
• False

JavaScript arrays are zero-indexed, meaning the first element starts at index 1.

• True
• False

.push() adds elements to the end of an array.

• True
• False

.pop() removes the first element of an array.

• True
• False

.unshift() adds one or more elements at the beginning of an array.

• True
• False

.shift() removes the last element of an array.

• True
• False

Associative arrays in JavaScript are typically implemented using Objects.

• True
• False

Multidimensional arrays are arrays that contain other arrays.

• True
• False

The operation arr.pop() returns the removed element.

• True
• False