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 :-).

A tuple is a(n):

	A.	column of a table.
	B.	two dimensional table.
	C.	row of a table.
	D.	key of a table.

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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In the relational model, relationships between relations or tables are created by using:

	A.	composite keys.
	B.	determinants.
	C.	candidate keys.
	D.	foreign keys.

Your Answer: Option

Correct Answer: Option D

Explanation:

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Which of the following statement is correct?

	A.	Only one parameter of a function can be a default parameter.
	B.	Minimum one parameter of a function must be a default parameter.
	C.	All the parameters of a function can be default parameters.
	D.	No parameter of a function can be default.

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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A database management system (DBMS) is a:

	A.	hardware system used to create, maintain, and provide controlled access to a database.
	B.	hardware system used to create, maintain, and provide uncontrolled access to a database.
	C.	software system used to create, maintain, and provide controlled access to a database.
	D.	software system used to create, maintain, and provide uncontrolled access to a database.

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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For the code snippet shown below, which of the following statements are valid?

public class Generic<T>
{
public T Field;
public void TestSub()
{
T i = Field + 1;
}
}
class MyProgram
{
static void Main(string[] args)
{
Generic<int> gen = new Generic<int>();
gen.TestSub();
}
}

	A.	Addition will produce result 1.
	B.	Result of addition is system-dependent.
	C.	Program will generate run-time exception.
	D.	Compiler will report an error: Operator '+' is not defined for types T and int.
	E.	None of the above.

Your Answer: Option

Correct Answer: Option D

Explanation:

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What layer of OSI determines the interface of the system with the user?

	A.	Session
	B.	Data-link
	C.	Application
	D.	Network
	E.	None of the above

Your Answer: Option

Correct Answer: Option C

Explanation:

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Which one of the following statements best applies to a parallel RLC circuit?

	A.	The voltage waveform for each component always has the same amplitude and phase as the applied voltage
	B.	The sum of the current is always less than the applied current
	C.	The current waveform for each component always has the same amplitude and phase as the applied current
	D.	All of the above
	E.	None of the above

Your Answer: Option

Correct Answer: Option A

Explanation:

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You want to connect 2 networks that are both lOBaseT Ethernet networks. The 2 networks are located in separate buildings so that they are approximately 1,000 meters apart. Which media should you use?

	A.	Type 1 STP Cable
	B.	RG-58 A/U Coaxial Cable
	C.	fiber-optic cable
	D.	wireless infrared
	E.	None of the above

Your Answer: Option

Correct Answer: Option C

Explanation:

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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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10.

Which one of the following is the correct way to declare a pure virtual function?

	A.	virtual void Display(void){0};
	B.	virtual void Display = 0;
	C.	virtual void Display(void) = 0;
	D.	void Display(void) = 0;

Your Answer: Option

Correct Answer: Option C

Explanation:

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11.

In OLE DB, actions that an object can perform are called:

	A.	properties.
	B.	collections.
	C.	methods.
	D.	abstractions.

Your Answer: Option

Correct Answer: Option C

Explanation:

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12.

Which of the following statements is false?

	A.	the technique of storage compaction involves moving all occupied areas of storage to one end or other of main storage
	B.	compaction does not involve relocation of programs
	C.	compaction is also know as garbage collection
	D.	the system must stop everything while it performs the compaction
	E.	None of the above

Your Answer: Option

Correct Answer: Option B

Explanation:

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13.

What do the following declaration signify?

int (*pf)();

	A.	pf is a pointer to function.
	B.	pf is a function pointer.
	C.	pf is a pointer to a function which return int
	D.	pf is a function of pointer variable.

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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14.

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:

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15.

The tracks on a disk which can be accessed without repositioning the R/W heads is

	A.	Surface
	B.	Cylinder
	C.	Cluster
	D.	All of the above
	E.	None of the above

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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16.

Which of the following statements will correctly copy the contents of one string into another ?

	A.	String s1 = "String"; String s2; s2 = s1;
	B.	String s1 = "String" ; String s2; s2 = String.Concat(s1, s2);
	C.	String s1 = "String"; String s2; s2 = String.Copy(s1);
	D.	String s1 = "String"; String s2; s2 = s1.Replace();
	E.	String s1 = "String"; String s2; s2 = s2.StringCopy(s1);

Your Answer: Option

Correct Answer: Option C

Explanation:

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17.

Before any changes to database structure are attempted one should first:

	A.	clearly understand the current structure and contents of the database only.
	B.	test any changes on a test database only.
	C.	create a complete backup of the operational database only.
	D.	All of the above should be done.

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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18.

Data administrators are responsible for:

	A.	physical database design.
	B.	managing technical issues in the database environment.
	C.	overall management of data resources in an organization.
	D.	writing application programs.

Your Answer: Option

Correct Answer: Option C

Explanation:

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19.

Prior to the invention of time sharing, the prevalent method of computer access was:

	A.	batch processing
	B.	telecommunication
	C.	remote access
	D.	All of the above
	E.	None of the above

Your Answer: Option

Correct Answer: Option A

Explanation:

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20.

Which of the following statements correctly define .NET Framework?

	A.	It is an environment for developing, building, deploying and executing Desktop Applications, Web Applications and Web Services.
	B.	It is an environment for developing, building, deploying and executing only Web Applications.
	C.	It is an environment for developing, building, deploying and executing Distributed Applications.
	D.	It is an environment for developing, building, deploying and executing Web Services.
	E.	It is an environment for development and execution of Windows applications.

Your Answer: Option

Correct Answer: Option A

Explanation:

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