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
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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
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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
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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
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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
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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.
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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
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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.
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What does the && operator do in C?
Anonymous Quiz
8%
a) It performs a logical OR.
37%
b) It performs a bitwise AND.
4%
c) It performs a bitwise OR.
51%
d) It performs a logical AND.
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What is the purpose of the finalize() method in Java?
Anonymous Quiz
18%
A) It is used to start the execution of a thread.
42%
B) It is called before an object is garbage collected.
23%
C) It is used to initialize an object after it is created.
16%
D) It provides runtime polymorphism.
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Which of the following is not a valid Java identifier?
Anonymous Quiz
21%
A) _helloWorld
12%
B) java2share
36%
C) 3DModel
31%
D) $currency
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In Java, which of the following is true about a static method?
Anonymous Quiz
20%
A) It belongs to a class, not to any specific instance of the class.
20%
B) It can only access static data in the class.
10%
C) It can directly call other static methods in the class.
50%
D) All of the above.
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What is the default value of a boolean variable in Java?
Anonymous Quiz
29%
A) true
37%
B) false
22%
C) null
11%
D) 0
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What is the size of the char data type in Java?
Anonymous Quiz
55%
A) 8 bits
27%
B) 16 bits
13%
C) 32 bits
5%
D) 64 bits
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Which of the following is used to handle exceptions in Java?
Anonymous Quiz
82%
A) try-catch blocks
9%
B) do-while loops
4%
C) for loops
5%
D) switch-case statements
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What does the static keyword in Java indicate?
Anonymous Quiz
24%
A) The member belongs to a specific instance of a class.
33%
B) The member belongs to the class, rather than any instance of the class.
28%
C) The member is a constant and cannot be changed.
15%
D) The member is protected from access by code defined outside its class.
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Which of the following correctly describes an abstract class in Java?
Anonymous Quiz
14%
A) An abstract class can be instantiated just like any other class.
36%
B) An abstract class must contain at least one abstract method.
18%
C) An abstract class cannot contain concrete methods (methods with implementations).
32%
D) An abstract class is a class that cannot be instantiated and can contain abstract methods.
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What is the purpose of the super keyword in Java?
Anonymous Quiz
70%
A) It is used to access the superclass of the current class.
17%
B) It is used to create an instance of a class.
7%
C) It is used to define a constant variable.
7%
D) It is used to indicate that a method can throw an exception.
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Which feature of Java ensures that a class can extend only one class?
Anonymous Quiz
11%
A) Polymorphism
11%
B) Encapsulation
29%
C) Inheritance
49%
D) Single Inheritance
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Which exception is thrown when trying to access an element with an index that is out of bounds for an array, ArrayList, or String?
Anonymous Quiz
10%
A) NullPointerException
80%
B) ArrayIndexOutOfBoundsException
7%
C) ArithmeticException
3%
D) ClassCastException
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