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 :-).

When using ODBC, which of the following processes ODBC requests and submits specific SQL statements to a given type of data source?

	A.	Data source
	B.	Driver
	C.	Driver manager
	D.	DBMS

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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What is the best ground for a conductive work bench?

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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Structured data may include which of the following?

	A.	Photo image
	B.	Video clip
	C.	Dates
	D.	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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vThe SQL statement that queries or reads data from a table is ________ .

	A.	SELECT
	B.	READ
	C.	QUERY
	D.	None of the above is correct.

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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The keyword used to define a structure is _____

	A.	stru
	B.	stt
	C.	struct
	D.	structure

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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Which of the following is the correct default value of a Boolean type?

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 statement is correct?

	A.	An array of references is acceptable.
	B.	Once a reference variable has been defined to refer to a particular variable it can refer to any other variable.
	C.	An array of references is not acceptable.
	D.	Reference is like a structure.

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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Which of the following is a mechanism of static polymorphism?

	A.	Operator overloading
	B.	Function overloading
	C.	Templates
	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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If Sample class has a Length property with set accessor then which of the following statements will work correctly?

	A.	Sample m = new Sample(); int l; l = m.Length;
	B.	Sample m = new Sample(); m.Length = m.Length + 20;
	C.	Sample.Length = 20;
	D.	Console.WriteLine (Sample.Length);
	E.	Sample m = new Sample(); m.Length = 10;

Your Answer: Option

Correct Answer: Option E

Explanation:

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

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10.

Which of the following statements is correct about the C#.NET program given below?

namespace IndiabixConsoleApplication
{
class Baseclass
{
int i;
public Baseclass(int ii)
{
i = ii;
Console.Write("Base ");
}
}
class Derived : Baseclass
{
public Derived(int ii) : base(ii)
{
Console.Write("Derived ");
}
}
class MyProgram
{
static void Main(string[ ] args)
{
Derived d = new Derived(10);
}
}
}

	A.	The program will work correctly only if we implement zero-argument constructors in Baseclass as well as Derived class.
	B.	The program will output: Derived Base
	C.	The program will report an error in the statement base(ii).
	D.	The program will work correctly if we replace base(ii) with base.Baseclass(ii).
	E.	The program will output: Base Derived

Your Answer: Option

Correct Answer: Option E

Explanation:

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

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11.

A goal of data mining includes which of the following?

	A.	To explain some observed event or condition
	B.	To confirm that data exists
	C.	To analyze data for expected relationships
	D.	To create a new data warehouse

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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12.

Which of the following statement correctly assigns a value 33 to a variable c?

byte a = 11, b = 22, c;

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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13.

ESD would cause the most damage to which component?

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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14.

Which of the following is the correct output for the C#.NET code snippet given below?

enum color
{
red,
green,
blue
}
color c;
c = color.red;
Console.WriteLine(c);

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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15.

What will be the output of the C#.NET code snippet given below?

byte b1 = 0xF7;
byte b2 = 0xAB;
byte temp;
temp = (byte)(b1 & b2);
Console.Write (temp + " ");
temp = (byte)(b1^b2);
Console.WriteLine(temp);

	A.	163 92
	B.	92 163
	C.	192 63
	D.	0 1

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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16.

Which one of these lists contains only Java programming language keywords?

	A.	class, if, void, long, Int, continue
	B.	goto, instanceof, native, finally, default, throws
	C.	try, virtual, throw, final, volatile, transient
	D.	strictfp, constant, super, implements, do
	E.	byte, break, assert, switch, include

Your Answer: Option

Correct Answer: Option B

Explanation:

All the words in option B are among the 49 Java keywords. Although goto reserved as a keyword in Java, goto is not used and has no function.

Option A is wrong because the keyword for the primitive int starts with a lowercase i.

Option C is wrong because "virtual" is a keyword in C++, but not Java.

Option D is wrong because "constant" is not a keyword. Constants in Java are marked static and final.

Option E is wrong because "include" is a keyword in C, but not in Java.

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17.

Which of the following types of connections can use full duplex?

Hub to hub
Switch to switch
Host to host
Switch to hub
Switch to host

	A.	1, 2 and 4
	B.	3 and 4
	C.	3 and 5
	D.	2, 3 and 5

Your Answer: Option

Correct Answer: Option D

Explanation:

Hubs cannot run full-duplex Ethernet. Full duplex must be used on a point-to-point connection between two devices capable of running full duplex. Switches and hosts can run full duplex between each other, but a hub can never run full duplex.

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18.

How many simultaneous Telnet sessions does a Cisco router support by default?

	A.	2
	B.	3
	C.	4
	D.	5

Your Answer: Option

Correct Answer: Option D

Explanation:

Cisco routers, if they do not have the Enterprise edition of the IOS, will default to 5 simultaneous Telnet sessions.

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19.

Which of the following statement is correct about the references?

	A.	A reference must always be initialized within functions.
	B.	A reference must always be initialized outside all functions.
	C.	A reference must always be initialized.
	D.	Both A and C.

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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20.

Which of the following security features can .NET applications avail?

1 PIN Security

2 Code Access Security

3 Role Based Security

4 Authentication Security

5 Biorhythm Security

	A.	1, 4, 5
	B.	2, 5
	C.	2, 3
	D.	3, 4

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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