
Collections MQC
Authored by RAVIKANTH K
Computers
Professional Development
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a part of the Java Collections Framework?
ArrayList
Array
int[]
String
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which collection does not allow duplicate elements?
List
Set
Map
All of the above
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which collection allows you to retrieve elements in the order they were inserted?
HashSet
Map
LinkedList
PriorityQueue
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the implementation of the List interface?
HashMap
HashSet
LinkedList
LinkedHashSet
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which collection class is synchronized?
HashSet
TreeSet
HashMap
None
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following collections is thread-safe?
Vector
ArrayList
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In which collection are elements stored as key-value pairs?
List
Set
Map
Queue
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