Java Serialization And Networking MCQ

Test your knowledge with important Java Serialization And Networking MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Java Serialization And Networking MCQs at Bissoy

• Which of these exceptions is thrown by URL class's constructors?
  ক

  URLNotFound

  খ

  URLSourceNotFound

  গ

  MalformedURLException

  ঘ

  URLNotFoundException
• What is the primary use of the `java.io` package in Java?
  ক

  It handles exceptions in networking

  খ

  It provides data structures for collections

  গ

  It is used for GUI programming

  ঘ

  It provides classes for input and output operations
• In Java Networking, which class is used for creating a UDP socket?
  ক

  `MulticastSocket`

  খ

  `ServerSocket`

  গ

  `DatagramSocket`

  ঘ

  `Socket`
• Which protocol is commonly used for web communication in Java Networking?
  ক

  SMTP (Simple Mail Transfer Protocol)

  খ

  HTTP (Hypertext Transfer Protocol)

  গ

  UDP (User Datagram Protocol)

  ঘ

  SMTP (Simple Mail Transfer Protocol)
• In Java Networking, what is the purpose of the `ServerSocket` class?
  ক

  To connect to a web server

  খ

  To send emails

  গ

  To listen for incoming client connections

  ঘ

  To read from a file
• Which Java class is used to represent a URL (Uniform Resource Locator)?
  ক

  `URLEncode`

  খ

  `URI`

  গ

  `URLConnection`

  ঘ

  `URL`
• What is the purpose of the `java.net` package in Java?
  ক

  It provides classes for network communication

  খ

  It handles exceptions in networking

  গ

  It provides GUI components

  ঘ

  It is used for database operations
• In Java Serialization, what is the purpose of the `serialVersionUID` field?
  ক

  To indicate that a class is serializable

  খ

  To store serialized data

  গ

  To handle exceptions during serialization

  ঘ

  To provide a version number for the serialized class
• Which method is used to customize the serialization process in Java?
  ক

  `customSerialize()` and `customDeserialize()`

  খ

  `saveObject()` and `loadObject()`

  গ

  `writeObject()` and `readObject()`

  ঘ

  `serialize()` and `deserialize()`
• In Java Serialization, what happens if a serialized class changes between serialization and deserialization?
  ক

  The program crashes

  খ

  An `InvalidClassException` is thrown

  গ

  A warning message is displayed

  ঘ

  The program crashes
• What is a multicast in Java Networking?
  ক

  Sending data to a single recipient

  খ

  Broadcasting data to all connected clients

  গ

  Sending data to a group of interested receivers

  ঘ

  A type of socket
• In Java Networking, what is the purpose of the `MulticastSocket` class?
  ক

  To serialize objects

  খ

  To establish a secure socket connection

  গ

  To handle HTTP requests

  ঘ

  To send and receive multicast datagrams
• Which protocol is commonly used for file transfer in Java Networking?
  ক

  FTP (File Transfer Protocol)

  খ

  SMTP (Simple Mail Transfer Protocol)

  গ

  HTTP (Hypertext Transfer Protocol)

  ঘ

  UDP (User Datagram Protocol)
• What is the purpose of the `URLConnection` class in Java Networking?
  ক

  To handle exceptions in networking

  খ

  To represent a UDP socket

  গ

  To serialize objects

  ঘ

  To represent a connection to a resource on the internet
• Which class in Java Networking is used for reading and writing streams of bytes?
  ক

  `HttpURLConnection`

  খ

  `ServerSocket`

  গ

  `InputStream` and `OutputStream`

  ঘ

  `Socket`
• In Java Networking, what is the purpose of the `DatagramPacket` class?
  ক

  To handle HTTP requests

  খ

  To represent a packet of data for use with UDP communication

  গ

  To serialize objects

  ঘ

  To handle HTTP requests
• What is a datagram in Java Networking?
  ক

  A type of server socket

  খ

  A secure connection

  গ

  A small packet of data sent over a network

  ঘ

  A serialized object
• In Java Networking, what is the purpose of the `InetAddress` class?
  ক

  To serialize objects

  খ

  To create a socket connection

  গ

  To send HTTP requests

  ঘ

  To represent an IP address
• What is the primary use of the `DatagramSocket` class in Java Networking?
  ক

  To send and receive datagrams over a connectionless UDP protocol

  খ

  To establish a secure socket connection

  গ

  To handle HTTP requests

  ঘ

  To serialize objects
• In Java Networking, what is the purpose of the `HttpURLConnection` class?
  ক

  To establish a secure socket connection

  খ

  To handle FTP file transfers

  গ

  To serialize objects over HTTP

  ঘ

  To perform HTTP network operations
• Which protocol is commonly used for sending emails in Java Networking?
  ক

  UDP (User Datagram Protocol)

  খ

  FTP (File Transfer Protocol)

  গ

  SMTP (Simple Mail Transfer Protocol)

  ঘ

  HTTP (Hypertext Transfer Protocol)
• In Java Networking, what is the purpose of the `URL` class?
  ক

  To establish a socket connection

  খ

  To represent a Uniform Resource Locator

  গ

  To serialize objects

  ঘ

  To establish a socket connection
• Which class in Java Networking is used to represent a server socket that listens for incoming client connections?
  ক

  `SocketServer`

  খ

  `Server`

  গ

  `ServerSocket`

  ঘ

  `SocketListener`
• What is a port number in Java Networking?
  ক

  A type of IP address

  খ

  A special code used to encrypt data

  গ

  A unique identifier for a host

  ঘ

  A numerical identifier for a specific process on a host
• In Java Networking, what is the purpose of the `Socket` class?
  ক

  To create a client socket for communication with a server

  খ

  To create a server socket for listening to client connections

  গ

  To create a thread for concurrent execution

  ঘ

  To handle exceptions in networking
• Which class in Java is responsible for deserialization during Java Serialization?
  ক

  `Serializable`

  খ

  `DeserializationHandler`

  গ

  `Deserialize`

  ঘ

  `ObjectInputStream`
• What is deserialization in Java Serialization?
  ক

  The process of converting a text file into an object

  খ

  The process of converting an object into a text file

  গ

  The process of converting a byte stream back into an object

  ঘ

  The process of converting an object into a byte stream
• In Java Serialization, what is the purpose of the `transient` keyword when applied to an instance variable?
  ক

  It indicates that the variable is mandatory for serialization

  খ

  It indicates that the variable should not be serialized

  গ

  It indicates that the variable should be ignored during deserialization

  ঘ

  It indicates that the variable is mandatory for serialization
• What is the purpose of the `ObjectOutputStream` class in Java Serialization?
  ক

  To read objects from an input stream

  খ

  To convert objects to text format

  গ

  To write objects to an output stream

  ঘ

  To serialize primitive data types
• Which interface in Java is used to mark a class as serializable?
  ক

  `MarkSerializable`

  খ

  `SerializableClass`

  গ

  `Serialize`

  ঘ

  `Serializable`