This video tutorial is part of a three-part series on maps and multi maps. It introduces maps as associative containers that store key-value pairs, allowing access by key rather than index. The video covers four main types of maps: map, multi map, unordered map, and unordered multi map, highlighting their unique features and behaviors. Maps are ordered and guarantee unique keys, while multi maps allow multiple equivalent keys. The tutorial also discusses the dynamic nature of these containers and their performance characteristics.

What is a key feature of maps that makes them popular among developers?

• They allow access by index.

• They are only available in older programming languages.

• They allow access by key instead of index.

• They store elements in a fixed size.

Which of the following is NOT a type of map provided by the STL?

• Unordered multi map

• Ordered map

• Multi map

• Map

What is a characteristic of unordered maps?

• They do not allow custom hashing functions.

• They guarantee the order of elements.

• They require a fixed size.

• They use hashing functions for quick retrieval.

How do multi maps differ from regular maps?

• They are slower than regular maps.

• They use the bracket operator for access.

• They do not allow duplicate keys.

• They allow multiple equivalent keys.

Which function is used to access elements in a multi map?

• Bracket operator

• Find member function

• Insert method

• Sort function