Which of these is a method of ObjectInput interface used to deserialize an object from a stream

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Which of these is a method of ObjectOutput interface used to deserialize an object from a stream?
Which of these is a method of ObjectInputStream used to deserialize?
Which of these is an interface for control over serialization and Deserialization Mcq?
Is a process of extracting object stream from file stream?

21.	Which of these interface extends DataInput interface?
a.	Serializable
b.	Externalization
c.	ObjectOutput
d.	ObjectInput

22.	Which of these is a method of ObjectInput interface used to deserialize an object from a stream?
a.	int read()
b.	void close()
c.	Object readObject()
d.	Object WriteObject()

Answer: (c).Object readObject()

23.	Which of these class extend InputStream class?
a.	ObjectStream
b.	ObjectInputStream
c.	ObjectOutput
d.	ObjectInput

Answer: (b).ObjectInputStream

24.	What is the output of this program? import java.io.*; class streams { public static void main(String[] args) { try { FileOutputStream fos = new FileOutputStream("serial"); ObjectOutputStream oos = new ObjectOutputStream(fos); oos.writeInt(5); oos.flush(); oos.close(); } catch(Exception e) { System.out.println("Serialization" + e); System.exit(0); } try { int z; FileInputStream fis = new FileInputStream("serial"); ObjectInputStream ois = new ObjectInputStream(fis); z = ois.readInt(); ois.close(); System.out.println(x); } catch (Exception e) { System.out.print("deserialization"); System.exit(0); } } }
a.	5
b.	void
c.	serialization
d.	deserialization

25.	What is the output of this program? import java.io.*; class serialization { public static void main(String[] args) { try { Myclass object1 = new Myclass("Hello", -7, 2.1e10); FileOutputStream fos = new FileOutputStream("serial"); ObjectOutputStream oos = new ObjectOutputStream(fos); oos.writeObject(object1); oos.flush(); oos.close(); } catch(Exception e) { System.out.println("Serialization" + e); System.exit(0); } try { int x; FileInputStream fis = new FileInputStream("serial"); ObjectInputStream ois = new ObjectInputStream(fis); x = ois.readInt(); ois.close(); System.out.println(x); } catch (Exception e) { System.out.print("deserialization"); System.exit(0); } } } class Myclass implements Serializable { String s; int i; double d; Myclass(String s, int i, double d) { this.d = d; this.i = i; this.s = s; } }
a.	-7
b.	Hello
c.	2.1E10
d.	deserialization

Answer: (d).deserialization

26.	Which of these package contains classes and interfaces for networking?
a.	java.io
b.	java.util
c.	java.net
d.	java.network

27.	Which of these is a protocol for breaking and sending packets to an address across a network?
a.	TCP/IP
b.	DNS
c.	Socket
d.	Proxy Server

28.	How many bits are in a single IP address?
a.	8
b.	16
c.	32
d.	64

29.	Which of these is a full form of DNS?
a.	Data Network Service
b.	Data Name Service
c.	Domain Network Service
d.	Domain Name Service

Answer: (d).Domain Name Service

30.	Which of these class is used to encapsulate IP address and DNS?
a.	DatagramPacket
b.	URL
c.	InetAddress
d.	ContentHandler

Which of these is a method of ObjectOutput interface used to deserialize an object from a stream?

Which of these is method of ObjectOutput interface used to write the object to input or output stream as required? Explanation: writeObject() is used to write an object into invoking stream, it can be input stream or output stream. 7.

Which of these is a method of ObjectInputStream used to deserialize?

The ObjectOutputStream class contains writeObject() method for serializing an Object. The ObjectInputStream class contains readObject() method for deserializing an object.

Which of these is an interface for control over serialization and Deserialization Mcq?

Explanation : ObjectOutput interface extends the DataOutput interface and supports object serialization.

Is a process of extracting object stream from file stream?

1. Which of these is a process of extracting/removing the state of an object from a stream? Explanation: Deserialization is a process by which the data written in the stream can be extracted out from the stream.

Cryto Eth

Which of these is a method of ObjectInput interface used to deserialize an object from a stream

Which of these is a method of ObjectOutput interface used to deserialize an object from a stream?

Which of these is a method of ObjectInputStream used to deserialize?

Which of these is an interface for control over serialization and Deserialization Mcq?

Is a process of extracting object stream from file stream?

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