This quiz is designed to test your understanding of C# Dictionary collections. C# dictionaries allow you to store and manage data in key-value pairs, providing an efficient way to access, add, and manipulate information. The questions will cover various dictionary operations such as adding and removing entries, accessing values, iterating through the dictionary, and checking for the existence of keys and values.
1.
What method is used to retrieve a value from a dictionary using a key?
2.
What will the TrimExcess() method do when called on a dictionary?
3.
What data type does a dictionary's key need to be?
4.
How can you safely check if a dictionary contains a key before adding a new item?
5.
Which method returns the index of the last occurrence of a value in a dictionary?
6.
Which method is used to clear all entries in a dictionary?
7.
What happens when you call the Remove() method on a key that doesn't exist in the dictionary?
8.
Which method is used to check whether a specific value exists in a dictionary?
9.
How can you update an existing value in a dictionary?
10.
What is the primary purpose of a dictionary in C#?
11.
How can you check if a dictionary contains a specific key in C#?
12.
Which of the following loops can be used to iterate through all key-value pairs in a C# dictionary?
13.
What is the purpose of the Count property in a dictionary?
14.
Which method is used to remove a key-value pair from a dictionary?
15.
What will happen if you try to add a duplicate key to a C# dictionary?
16.
How do you add a key-value pair to an existing dictionary in C#?
17.
Which of the following is the correct syntax to create a dictionary in C# using implicit typing?
