Question about Java Data Structure. Thank you

Question 1

Which of the following is true about Map? Select all that are correct

K is the data type of the key, V is the data type of value

Duplicate keys are allowed in a Map.

A value is identified by its key

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Question 2

Both TreeMap and HashMap implement the Map interface.

True

False

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Question 3

A HashMap Is-A List

True

False

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Question 4

Look up the method keySet() in the Map interface. What is the return data type?

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Question 5

A well defined recursive method contains what parts?

One or more base cases

One or more recursive calls

Either a or b

Both a and b