Which keyword is used to define an interface in Java?
Anonymous Quiz
55%
a) interface
13%
b) class
23%
c) implements
9%
d) extend
👍4✍2
What is the purpose of the static keyword in Java?
Anonymous Quiz
26%
a) It indicates that a variable is constant.
12%
b) It is used to define a class within another class.
54%
c) It is used to declare a method that can be called without creating an instance of the class.
8%
d) It is used to make a class immutable.
👍7❤🔥1
Which method is used to convert a string to an integer in Java?
Anonymous Quiz
55%
a) parseInt()
22%
b) parseInteger()
16%
c) toInteger()
7%
d) valueOf()
👍5❤🔥2✍1
What is the role of the this keyword in Java?
Anonymous Quiz
60%
a) It refers to the current instance of the class.
14%
b) It is used to create a new instance of a class.
16%
c) It is used to call a method of the superclass.
10%
d) It refers to the parent class of the current class.
👍8
Which of the following is used to implement multiple inheritance in Java?
Anonymous Quiz
58%
a) Interfaces
30%
b) Abstract classes
5%
c) Enums
7%
d) Packages
👍7🫡1
How do you declare a constant variable in Java?
Anonymous Quiz
21%
a) Using the constant keyword
42%
b) Using the final keyword
29%
c) Using the const keyword
9%
d) Constants cannot be declared in Java
👍8🤩2
Which method is used to compare two strings in a case-insensitive manner in Java?
Anonymous Quiz
30%
a) equalsIgnoreCase()
23%
b) equals()
23%
c) compareToIgnoreCase()
24%
d) compareTo()
👍6
What is the purpose of the new keyword in Java?
Anonymous Quiz
69%
a) To allocate memory for a new object
14%
b) To declare a new variable
12%
c) To create a new class
5%
d) To invoke a static method
👍7👌4
Which collection class in Java is synchronized?
Anonymous Quiz
44%
a) ArrayList
23%
b) LinkedList
20%
c) HashMap
13%
d) Vector
👍13🕊3
What does the super keyword represent in Java?
Anonymous Quiz
12%
a) It refers to the subclass.
29%
b) It refers to the current instance of the class.
55%
c) It refers to the superclass.
4%
d) It refers to the static context.
☃16👍3🔥1
How do you read user input from the console in Java?
Anonymous Quiz
22%
a) Using System.in.read()
48%
b) Using Scanner
22%
c) Using Console.readline()
8%
d) Using BufferedReader
👍10🤷♂3🥴2
Which method is used to find the length of a string in Java?
Anonymous Quiz
58%
a) length()
9%
b) size()
6%
c) count()
28%
d) strlen()
👍7🤷♂4
Which protocol is used for secure communication over a computer network?
Anonymous Quiz
8%
a) FTP
28%
b) HTTP
57%
c) HTTPS
7%
d) SMTP
👍4❤🔥3❤3✍1
What is the purpose of the Domain Name System (DNS) in computer networks?
Anonymous Quiz
11%
a) To encrypt data transmission
31%
b) To provide dynamic IP addresses
50%
c) To translate domain names into IP addresses
9%
d) To establish secure connections
👍5🔥3
Which of the following is a connection-oriented protocol used for reliable data transfer in networking?
Anonymous Quiz
16%
a) UDP
10%
b) ICMP
60%
c) TCP
14%
d) IP
👍4🔥3😘3✍2
What is the purpose of the subnet mask in networking?
Anonymous Quiz
20%
a) To uniquely identify a device on a network
16%
b) To determine the default gateway
51%
c) To divide an IP address into network and host portions
13%
d) To encrypt data transmission between devices
👍10✍3🤓3
Which of the following is a protocol used for sending and receiving emails?
Anonymous Quiz
15%
a) FTP
53%
b) SMTP
29%
c) HTTP
3%
d) DHCP
👍9❤🔥4✍2
What is the purpose of the #include directive in C?
Anonymous Quiz
72%
a) To insert the contents of one file into another file during compilation.
13%
b) To declare variables.
3%
c) To create a loop.
12%
d) To define a macro.
👍9🤓3🔥2😈2👨💻1
Which of the following data types in C has the largest storage capacity?
Anonymous Quiz
10%
a) int
8%
b) float
74%
c) double
8%
d) char
✍6👍6🕊5
In C, what is the purpose of the return 0; statement in the main function?
Anonymous Quiz
28%
a) It indicates that the program ended successfully.
11%
b) It causes the program to exit immediately.
14%
c) It returns control to the operating system.
47%
d) Both a and c.
👍8🕊2✍1🤗1