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 :-).

What command is used to stop RIP routing updates from exiting out an interface but still allow the interface to receive RIP route updates?

	A.	Router(config-if)# no routing
	B.	Router(config-if)# passive-interface
	C.	Router(config-router)# passive-interface s0
	D.	Router(config-router)# no routing updates

Your Answer: Option

Correct Answer: Option C

Explanation:

The (config-router)#passive-interface command stops updates from being sent out an interface, but route updates are still received.

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What does the following C#.NET code snippet will print?

int i = 0, j = 0;

label:
i++;
j+=i;
if (i < 10)
{
Console.Write(i +" ");
goto label;
}

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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Critical path of the PERT chart is:

	A.	path which takes the longest time to complete the project
	B.	the shortest path
	C.	both of the above
	D.	path which takes the shortest time to complete the project
	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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Which of the following is(are) invalid string constant(s)?

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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Which of the following statements is correct about constructors?

	A.	If we provide a one-argument constructor then the compiler still provides a zero-argument constructor.
	B.	Static constructors can use optional arguments.
	C.	Overloaded constructors cannot use optional arguments.
	D.	If we do not provide a constructor, then the compiler provides a zero-argument constructor.

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 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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Which of the following range is a valid long double (Turbo C in 16 bit DOS OS) ?

	A.	3.4E-4932 to 1.1E+4932
	B.	3.4E-4932 to 3.4E+4932
	C.	1.1E-4932 to 1.1E+4932
	D.	1.7E-4932 to 1.7E+4932

Your Answer: Option

Correct Answer: Option A

Explanation:

The range of long double is 3.4E^-4932 to 1.1E⁺⁴⁹³²

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The extract process is which of the following?

	A.	Capturing all of the data contained in various operational systems
	B.	Capturing a subset of the data contained in various operational systems
	C.	Capturing all of the data contained in various decision support systems
	D.	Capturing a subset of the data contained in various decision support systems

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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A transitive dependency is which of the following?

	A.	A functional dependency between two or more key attributes.
	B.	A functional dependency between two or more nonkey attributes.
	C.	A relation that is in first normal form.
	D.	A relation that is in second normal form.

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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10.

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:

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

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11.

Which of the following does not allow multiple users or devices to share one communications line?

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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12.

The principle of locality of reference justifies the use of

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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13.

Which of the following occurs when a transaction rereads data it has previously read and finds modification or deletions caused by a committed transaction?

	A.	Nonrepeatable read
	B.	Phantom read
	C.	Dirty read
	D.	Consistent read

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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14.

Which statement(s) about IPv6 addresses are true?

Leading zeros are required.
Two colons (::) are used to represent successive hexadecimal fields of zeros.
Two colons (::) are used to separate fields.
A single interface will have multiple IPv6 addresses of different types.

	A.	1 and 3
	B.	2 and 4
	C.	1, 3 and 4
	D.	All of the above

Your Answer: Option

Correct Answer: Option B

Explanation:

In order to shorten the written length of an IPv6 address, successive fields of zeros may be replaced by double colons. In trying to shorten the address further, leading zeros may also be removed. Just as with IPv4, a single device's interface can have more than one address; with IPv6 there are more types of addresses and the same rule applies. There can be link-local, global unicast, and multicast addresses all assigned to the same interface.

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15.

When creating a pool of global addresses, which of the following can be used instead of the netmask command?

	A.	/ (slash notation)
	B.	prefix-length
	C.	no mask
	D.	block-size

Your Answer: Option

Correct Answer: Option B

Explanation:

Instead of the netmask command, you can use the prefix-length <length> statement.

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16.

What command is used to list contents of directories?

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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17.

Which of the following can be declared as a virtual in a class?

1 Methods

2 Properties

3 Events

4 Fields

5 Static fields

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

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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18.

Which of the following statements are correct about the C#.NET code snippet given below?

class Sample
{
static int i;
int j;
public void proc1()
{
i = 11;
j = 22;
}
public static void proc2()
{
i = 1;
j = 2;
}
static Sample()
{
i = 0;
j = 0;
}
}

	A.	i cannot be initialized in proc1().
	B.	proc1() can initialize i as well as j.
	C.	j can be initialized in proc2().
	D.	The constructor can never be declared as static.
	E.	proc2() can initialize i as well as j.

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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19.

SQL can be used to:

	A.	create database structures only.
	B.	query database data only.
	C.	modify database data only.
	D.	All of the above can be done by SQL.

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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20.

A development stategy whereby the executive control modules of a system are coded and tested first, is known as

	A.	Bottom-up development
	B.	Top-down development
	C.	Left-Right development
	D.	All 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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