Computer Knowledge

Computer Software Operations

1,772 Questions

This hub provides extensive practice on computer software operations and keyboard shortcuts. It covers document formatting, spreadsheet navigation, and common application commands. These questions are essential for candidates preparing for banking, railways, and staff selection computer proficiency tests.

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Computer Software Operations Questions

Multiple choice

How many subclasses of InputStream class are there?

  1. 9

  2. 7

  3. 8

  4. 6

  5. 5
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct answer. there are 7 subclasses of InputStream class.hese are :-1.) FileInputStream :- for reading bytes from a file.2.) ObjectInputStream :- for readin objects and primitive data types from input stream.3.) SequenceInputStream :- for readin from a sequence of streams.4.) ByteArrayInputStream :- for Stream that reads a byte array.5.) pipedInputStream :- for reading from a piped stream.6.) FilterInputStream :- for filtering input from Existing Stream.7.) StringBufferInputStream:- for readin from a string.These are the 7 subclasses.So this is correct answer.

Multiple choice

How many subclasses of OutputStream class are present in Java?

  1. 9

  2. 6

  3. 5

  4. 8

  5. 7
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

There are five subclasses of OutputStream class are the. These are :-1.) FileOutputStream :- for writing bytes into file.2.) ObjectOutputStream:- for writing objects and primitive data types to output stream.3.) ByteArrayOutputStream:- For output stream that writes byte into array.4.) pipedOutputStream :- for writing into a piped stream.5.) FilterOutputStream :- for filtering output into an existing stream.So this is the correct answer.

Multiple choice

Byte stream are defined by using _____ class hierarchy.

  1. four

  2. three

  3. two

  4. one

  5. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct answer. Byte stream can be defined by using two class hierarchies. These two classes are :-1.) InputStream2.) OutputStreamSo this is the correct answer.