Java Programming Test (Random Questions)

Java Programming Test (Random Questions) - Computer Science & Engineering

Instruction:

This is a FREE online test. DO NOT pay money to anyone to attend this test.
Total number of questions : 20.
Time alloted : 30 minutes.
Each question carry 1 mark, no negative marks.
DO NOT refresh the page.
All the best :-).

You set the console password, but when you display the configuration, the password doesn't show up; it looks like this:

output cut]
Line console 0
    Exec-timeout 1 44
    Password 7098C0BQR
    Login
[output cut]

What cause the password to be stored like this?

	A.	encrypt password
	B.	service password-encryption
	C.	service-password-encryption
	D.	exec-timeout 1 35

Your Answer: Option

Correct Answer: Option B

Explanation:

The command service password-encryption, from global configuration mode, will encrypt the passwords.

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Which of the following statements are correct?

1 A switch statement can act on numerical as well as Boolean types.

2 A switch statement can act on characters, strings and enumerations types.

3 We cannot declare variables within a case statement if it is not enclosed by { }.

4 The foreach statement is used to iterate through the collection to get the desired information and should be used to change the contents of the collection to avoid unpredictable side effects.

5 All of the expressions of the for statement are not optional.

	A.	1, 2
	B.	2, 3
	C.	3, 5
	D.	4, 5
	E.	None of these

Your Answer: Option

Correct Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

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Specialization is which of the following processes?

	A.	Defining one or more subtypes of the supertype and forming supertype/subtype relationships.
	B.	Defining one or more supertypes of the subtype and forming supertype/subtype relationships.
	C.	Defining one or more subtypes of the supertype and not forming supertype/subtype relationships.
	D.	Defining one or more supertypes of the subtype and not forming supertype/subtype relationships.

Your Answer: Option

Correct Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

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When the minimum number of instances of an entity is one, you know which of the following?

	A.	Mandatory one
	B.	Optional one
	C.	Mandatory many
	D.	Cannot tell

Your Answer: Option

Correct Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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What mode of authentication does SQL Server NOT provide?

	A.	Windows-only security
	B.	Both SQL Server and Windows-only security
	C.	Mixed security
	D.	SQL Server only security

Your Answer: Option

Correct Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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Which of the following statements is correct?

A reference is not a constant pointer.
A referenced is automatically de-referenced.

	A.	Only 1 is correct.
	B.	Only 2 is correct.
	C.	Both 1 and 2 are correct.
	D.	Both 1 and 2 are incorrect.

Your Answer: Option

Correct Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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A class implements two interfaces each containing three methods. The class contains no instance data. Which of the following correctly indicate the size of the object created from this class?

	A.	12 bytes
	B.	24 bytes
	C.	0 byte
	D.	8 bytes
	E.	16 bytes

Your Answer: Option

Correct Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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Which of the following are the correct ways to increment the value of variable a by 1?

1 ++a++;

2 a += 1;

3 a ++ 1;

4 a = a +1;

5 a = +1;

	A.	1, 3
	B.	2, 4
	C.	3, 5
	D.	4, 5
	E.	None of these

Your Answer: Option

Correct Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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Which of the following statement is correct?

	A.	Two functions having same number of argument, order and type of argument can be overloaded if both functions do not have any default argument.
	B.	Overloaded function must have default arguments.
	C.	Overloaded function must have default arguments starting from the left of argument list.
	D.	A function can be overloaded more than once.

Your Answer: Option

Correct Answer: Option

Explanation:

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10.

A positive AND gate is also a negative

	A.	NAND gate
	B.	NOR gate
	C.	AND gate
	D.	OR gate
	E.	None of the above

Your Answer: Option

Correct Answer: Option D

Explanation:

and-or

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11.

The ODBC core API consists of which of the following functions?

	A.	Commit or rollback transactions only
	B.	Connect to data sources with driver-specific information only
	C.	Connect to data sources only
	D.	Both 1 and 3 above are in the OBDC core API.

Your Answer: Option

Correct Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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12.

Which of the following is NOT a type of SQL constraint?

	A.	PRIMARY KEY
	B.	FOREIGN KEY
	C.	ALTERNATE KEY
	D.	UNIQUE

Your Answer: Option

Correct Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

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13.

How many values is a subroutine capable of returning?

	A.	Depends upon how many params arguments does it use.
	B.	Any number of values.
	C.	Depends upon how many ref arguments does it use.
	D.	0
	E.	1

Your Answer: Option

Correct Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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14.

A programmable controller:

	A.	allows faster machine checkout
	B.	is easier to troubleshoot than standard relay logic
	C.	both (a) and (b)
	D.	All of the above
	E.	None of the above

Your Answer: Option

Correct Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

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15.

Which of the following function is used to find the first occurrence of a given string in another string?

	A.	strchr()
	B.	strrchr()
	C.	strstr()
	D.	strnset()

Your Answer: Option

Correct Answer: Option C

Explanation:

The function strstr() Finds the first occurrence of a substring in another string

Declaration: char *strstr(const char *s1, const char *s2);

Return Value:
On success, strstr returns a pointer to the element in s1 where s2 begins (points to s2 in s1).
On error (if s2 does not occur in s1), strstr returns null.

Example:

#include <stdio.h>
#include <string.h>

int main(void)
{
   char *str1 = "IndiaBIX", *str2 = "ia", *ptr;

   ptr = strstr(str1, str2);
   printf("The substring is: %s\n", ptr);
   return 0;
}

Output: The substring is: iaBIX

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16.

Which of the following statement is correct??

	A.	A constructor has the same name as the class in which it is present.
	B.	A constructor has a different name than the class in which it is present.
	C.	A constructor always returns an integer.
	D.	A constructor cannot be overloaded.

Your Answer: Option

Correct Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

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17.

Which of the following is part of an administrative policy to secure a database?

	A.	Authentication policies
	B.	Limiting particular areas within a building to only authorized people
	C.	Ensure appropriate responses rates are in external maintenance agreements
	D.	All of the above.

Your Answer: Option

Correct Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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18.

Which of the following statements is correct?

	A.	A constructor can be used to set default values and limit instantiation.
	B.	C# provides a copy constructor.
	C.	Destructors are used with classes as well as structures.
	D.	A class can have more than one destructor.

Your Answer: Option

Correct Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

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19.

SQL Server 2000 stored procedures can:

	A.	never be kept within the database.
	B.	be kept within the database and invoked by application programs.
	C.	be stored on the users' computer.
	D.	support BEFORE, INSTEAD OF and AFTER types.

Your Answer: Option

Correct Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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20.

The DBMS that is most difficult to use is ________ .

	A.	Microsoft's SQL Server
	B.	Microsoft's Access
	C.	IBM's DB2
	D.	Oracle Corporation's Oracle

Your Answer: Option

Correct Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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