0

programming languages Online Quiz - 50

Description: programming languages Online Quiz - 50
Number of Questions: 20
Created by:
Tags: programming languages
Attempted 0/20 Correct 0 Score 0

Min, Default and Max size of DBMS Output Buffer is ?

  1. 1 - 10,000 - 1,000,000

  2. 1 - 10,000 - 100,000

  3. 1 - 20,000 - 100,000

  4. 1 - 20,000 - 1,000,000


Correct Option: D

The file init.ora is available at the location ?

  1. $Oracle_home/data

  2. $Oracle_home/dbs

  3. $Oracle_home/dba

  4. $Oracle_home/db


Correct Option: B
  1. $Oracle_home/network/administrator

  2. $Oracle_home/db/administrator

  3. $Oracle_home/network/admin

  4. $Oracle_home/db/admin


Correct Option: C

import java.util.regex.; class Regex2 { public static void main(String[] args) { Pattern p = Pattern.compile(args[0]); Matcher m = p.matcher(args[1]); boolean b = false; while(b = m.find()) { System.out.print(m.start() + m.group()); } } } And the command line: java Regex2 "\d" ab34ef

  1. 234

  2. 334

  3. 2334

  4. 0123456

  5. 01234456

  6. 12334567


Correct Option: E

AI Explanation

To answer this question, let's analyze the given code and the command line arguments.

The code uses regular expressions to search for a pattern in a given input string. The command line argument args[0] is used to define the regular expression pattern, and args[1] is the input string on which the pattern is matched.

In this case, the regular expression pattern is \d*, which matches zero or more consecutive digits.

The input string is "ab34ef".

The code uses a Matcher object m to find matches of the pattern in the input string. The find() method of the Matcher class is used in a while loop to find all occurrences of the pattern.

Inside the while loop, the code prints the start index of each match (m.start()) followed by the matched substring (m.group()).

Let's go through each option to understand why it is correct or incorrect:

Option A) 234 - This option is incorrect because it only includes one occurrence of the pattern. The code will find multiple occurrences of the pattern.

Option B) 334 - This option is incorrect because it only includes one occurrence of the pattern. The code will find multiple occurrences of the pattern.

Option C) 2334 - This option is incorrect because it only includes one occurrence of the pattern. The code will find multiple occurrences of the pattern.

Option D) 0123456 - This option is incorrect because it includes all the digits in the input string, but it doesn't include the non-digit characters. The code will find multiple occurrences of the pattern.

Option E) 01234456 - This option is correct because it includes all the digits in the input string, as well as the non-digit characters. The code will find multiple occurrences of the pattern and print the start index followed by the matched substring for each occurrence.

Option F) 12334567 - This option is incorrect because it doesn't include the non-digit characters in the input string. The code will find multiple occurrences of the pattern.

The correct answer is E. This option is correct because it includes all the digits in the input string, as well as the non-digit characters. The code will find multiple occurrences of the pattern and print the start index followed by the matched substring for each occurrence.

public static void main(String[] args) { // INSERT DECLARATION HERE for (int i = 0; i <= 10; i++) { List row = new ArrayList(); for (int j = 0; j <= 10; j++) row.add(i * j); table.add(row); } for (List row : table) System.out.println(row); } Which statements could be inserted at // INSERT DECLARATION HERE to allow this code to compile and run? (Choose all that apply.)

  1. List> table = new List>();

  2. List> table = new ArrayList>();

  3. List> table = new ArrayList>();

  4. List table = new List();

  5. List table = new ArrayList();

  6. List table = new ArrayList();


Correct Option: B
  1. The before() method will print 1 2

  2. The before() method will print 1 2 3

  3. The before() method will print three numbers, but the order cannot be determined

  4. The before() method will not compile

  5. The before() method will throw an exception at runtime


Correct Option: E
  1. import java.util.*; 4. class Dog { int size; Dog(int s) { size = s; } } 5. public class FirstGrade { 6. public static void main(String[] args) { 7. TreeSet i = new TreeSet(); 8. TreeSet d = new TreeSet(); 9. 10. d.add(new Dog(1)); d.add(new Dog(2)); d.add(new Dog(1)); 11. i.add(1); i.add(2); i.add(1); 12. System.out.println(d.size() + " " + i.size()); 13. } 14. }
  1. 1 2

  2. 2 2

  3. 2 3

  4. Compilation fails

  5. Exception occurs at runtime


Correct Option: E

How do you design a website with multilingual support in ASP.NET?

  1. True

  2. False


Correct Option: A

How many sections are there in data division

  1. 4

  2. 6

  3. 3

  4. 2


Correct Option: B

which of the following is mandatory for cobol program.

  1. identification division and program id

  2. identification division and data division

  3. identification division and report section

  4. identification division linkage section and program id


Correct Option: A

close with lock statement closes an opened file and it prevents the file from further being opened by the same program.

  1. True

  2. False


Correct Option: A

Which is responsible for dot net framework language interoperability

  1. JIT

  2. Language Specific Compiler

  3. MSIL

  4. CTS


Correct Option: C
  1. JAVA

  2. C#

  3. works in java but not in C#

  4. works in C# but not in JAVA

  5. works in both languages


Correct Option: C

Which of the following statements is true :

  1. inner join and intersect are same

  2. left join and union are same

  3. inner join when used with distinct can simulate intersect

  4. inner join and union are same


Correct Option: C
- Hide questions