3i Infotech Papers: Sample Questions 282 - 283 of 1245

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Question number: 282

» Languages » C & C Plus Plus

Essay Question▾

Describe in Detail

What is the output of the following program?

  1. main ()
  2. {
  3.     char a[100];
  4.     a[0] = ‘a’ a[1] = ‘b’ a[2] = ‘c’ a[4] = ‘d’ ;
  5.     abc (a);
  6. }
  7. abc (char a[])
  8. {
  9.     a + +;
  10.     printf ( “%c” * a);
  11.     a + +;
  12.     printf ( “%c” * a);
  13. }

Explanation

In the program

Table shows the program

Table shows the program

char a [100];

Declare the character array a [100];

a [0] = ‘a’ a [1] = ‘b’ a [2] = ‘c’ a [4] = ‘d’;

Define the characters in the array.

abc (a);

Applying abc (a) function

abc (char a [] )

{

a ++;

printf (“%c” * a);

a ++;

printf (“%c” * a);

}

In the abc () function

First the base address is modified only in function and as a result ‘a’ points to ‘b’ then after incrementing to ‘c’.

So, bc will be printed.

Question number: 283

» Database » Oracle

MCQ▾

Question

LGWR process writes information into….

Choices

Choice (4) Response

a.

Redo log files

b.

Control files

c.

Database

d.

None of the above

Answer

a.

Explanation

Structure understanding of LGWR.

Structure Understanding of LGWR.

Structure understanding of LGWR.

  • LGWR process writes information into redo log files.

  • Redo log files are created upon database creation and addition one time added by the DBA.

  • When we start a database instance, LGWR is an oracle background process created.

  • Writes the redo log buffers to the on-line redo log files.

  • Redo log data is always written first to a buffer in memory, and then written to disk by the LGWR process.

The LGWR process is also responsible for:

  • When a transaction is committed, writing commit records to the log file

  • Multiple commits that is written in a single operation when database activity is high.

  • Recording a system change number to each committed transaction, for use in recovery operations when running Parallel Server.