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 :-).

Which of the following is the incorrect form of Decision Control instruction?

	A.	if (Condition1) {// Some statement}
	B.	if (Condition1) {// Some statement} else {// Some statement}
	C.	if (Condition1) {// Some statement} else {// Some statement} else if ( Condition2){//Some statement}
	D.	if ( Condition1 ) {// Some statement} else if ( Condition2 ) {// Some statement} else {// Some statement}
	E.	if ( Condition1 ) {// Some statement} else if ( Condition2 ) {// Some statement} else if ( Condition3 ) {// Some statement} else {// Some statement}

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 not a characteristic of good test data

	A.	users do not participate at this preliminary stage
	B.	should be comprehensive
	C.	every statement should be executed
	D.	All of the above
	E.	None of the above

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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Cisco's Unified Wireless Solution provides a mesh solution. What devices do you absolutely need to purchase to run a Cisco solution?

WCS
Controller
Access point
Bridge

	A.	1 and 2
	B.	2 and 3
	C.	1 and 4 only
	D.	4 only

Your Answer: Option

Correct Answer: Option B

Explanation:

The Cisco Unified Wireless Solution is a great product, but you must purchase specialized devices. Cisco managed access points and a controller are the devices you need to purchase to run the Unified Wireless Solution.

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Segmentation of a data stream happens at which layer of the OSI model?

	A.	Physical
	B.	Data Link
	C.	Network
	D.	Transport

Your Answer: Option

Correct Answer: Option D

Explanation:

The Transport layer receives large data streams from the upper layers and breaks these up into smaller pieces called segments.

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The wildcard in a WHERE clause is useful when?

	A.	An exact match is necessary in a SELECT statement.
	B.	An exact match is not possible in a SELECT statement.
	C.	An exact match is necessary in a CREATE statement.
	D.	An exact match is not possible in a CREATE statement.

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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In raster-scan colour monitors, colour can be intensified by:

	A.	grouping the phosphor dots in a circular pattern
	B.	having each electron gun controlled by a composite signal
	C.	using an in-line gun arrangement with a solid metal mesh
	D.	having each electron gun controlled by separate signal
	E.	None 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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The analysis and design of application systems are the responsibility of a _____

	A.	Computer Operator
	B.	Programmer
	C.	System Analyst
	D.	Data entry operator
	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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When assessing the table structure of an acquired set of tables with data, accessing the validity of possible referential integrity constraints on foreign keys is (part of) the:

	A.	first step.
	B.	second step.
	C.	third step.
	D.	fourth step.

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 can be used to terminate a while loop and transfer control outside the loop?

1 exit while

2 continue

3 exit statement

4 break

5 goto

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

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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10.

What does the command o/r 0x2142 provide?

	A.	It is used to restart the router.
	B.	It is used to bypass the configuration in NVRAM.
	C.	It is used to enter ROM Monitor mode.
	D.	It is used to view the lost password.

Your Answer: Option

Correct Answer: Option B

Explanation:

The default configuration setting is 0x2102, which tells the router to load the IOS from flash and the configuration from NVRAM. 0x2142 tells the router to bypass the configuration in NVRAM so that you can perform password recovery.

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11.

A noiseless 3 KHz Channel transmits bits with binary level signals. What is the maximum data rate?

	A.	3 Kbps
	B.	6 Kbps
	C.	12 Kbps
	D.	24 Kbps.

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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12.

A relation in this form is free of all modification anomalies.

	A.	First normal form
	B.	Second normal form
	C.	Third normal form
	D.	Domain/key normal form

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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13.

Usually, it takes 10-bits to represent one character. How many characters can be transmitted at a speed of 1200 BPS?

	A.	10
	B.	12
	C.	120
	D.	1200
	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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14.

Which of the following is the correct way to obtain the number of elements present in the array given below?

int[] intMyArr = {25, 30, 45, 15, 60};

1 intMyArr.GetMax;

2 intMyArr.Highest(0);

3 intMyArr.GetUpperBound(0);

4 intMyArr.Length;

5 intMyArr.GetMaxElements(0);

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

Your Answer: Option

Correct Answer: Option B

Explanation:

using System;

public class Test
{
public static void Main()
{
int[] intMyArr = { 25, 30, 45, 15, 60, 78, 99 };
Console.WriteLine(intMyArr.Length);
Console.WriteLine(intMyArr.GetUpperBound(0)+1);
}
}
/*
Output :
7
7
*/

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15.

Which of the following do you need to consider when you make a table in SQL?

	A.	Data types
	B.	Primary keys
	C.	Default values
	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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16.

Which DOS command is used to detect, diagnose and repair logical and physical disk errors on both, uncompressed and Double space compressed drive?

	A.	DEFRAG
	B.	DBLSPACE
	C.	SCANDISK
	D.	MSAV
	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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17.

A good business rule is which of the following?

	A.	Declarative
	B.	Imprecise
	C.	Redundant
	D.	Compound

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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18.

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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19.

JDBC stands for:

	A.	Java Database Connectivity
	B.	Java Database Components
	C.	Java Database Control
	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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20.

The transaction log includes which of the following?

	A.	The before-image of a record
	B.	The after-image of a record
	C.	The before and after-image of a record
	D.	The essential data of the record

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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