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 :-).

Frames from one LAN can be transmitted to another LAN via the device

	A.	Router
	B.	Bridge
	C.	Repeater
	D.	Modem

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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For a pure capacitor:

	A.	ac current and voltage are exactly in phase
	B.	ac current leads the voltage by 90 degree
	C.	ac current is converted to dc voltage
	D.	ac current lags the voltage by 90 degree
	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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A ________ is a stored program that is attached to a table or a view.

	A.	pseudofile
	B.	embedded SELECT statement
	C.	trigger
	D.	None of the above is correct.

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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A semijoin is which of the following?

	A.	Only the joining attributes are sent from one site to another and then all of the rows are returned.
	B.	All of the attributes are sent from one site to another and then only the required rows are returned.
	C.	Only the joining attributes are sent from one site to another and then only the required rows are returned.
	D.	All of the attributes are sent from one site to another and then only the required rows are returned.

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 gets called when an object goes out of scope?

	A.	constructor
	B.	destructor
	C.	main
	D.	virtual function

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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Each answer below shows example data from a table. Which answer is an example of the multivalue, multicolumn problem?

	A.	Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.
	B.	Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.
	C.	Three rows have the values Brown, NULL, and Blue in the same column.
	D.	One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.

Your Answer: Option

Correct Answer: Option A

Explanation:

vNo answer description available for this question. Let us discuss.

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

byte b1 = 0xAB;
byte b2 = 0x99;
byte temp;
temp = (byte)~b2;
Console.Write(temp + " ");
temp = (byte)(b1 << b2);
Console.Write (temp + " ");
temp = (byte) (b2 >> 2);
Console.WriteLine(temp);

	A.	102 1 38
	B.	108 0 32
	C.	102 0 38
	D.	1 0 1

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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In an inheritance chain which of the following members of base class are accessible to the derived class members?

1 static

2 protected

3 private

4 shared

5 public

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

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 statements is correct?

	A.	Data items in a class must be private.
	B.	Both data and functions can be either private or public.
	C.	Member functions of a class must be private.
	D.	Constructor of a class cannot be private.

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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10.

You were installing an application in Windows 95, and the computer crashes, what do you do?

	A.	press alt + Ctrl + delete, twice
	B.	press alt + Ctrl + delete, and end task
	C.	press the reset button on the computer
	D.	turn off computer and boot from a floppy disk
	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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11.

Sort/report generators

	A.	are faster than index/report generators
	B.	require more disk space than index/report generators
	C.	do not need to sort before generating a report
	D.	both (a) and (b)
	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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12.

Which command of MS-DOS is used to copy only files that have been modified on or after the date you specify?

	A.	XCOPY/D : date
	B.	COPY/D : date
	C.	COPY/M
	D.	XCOPY/V
	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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13.

Which two files are used during operation of the DBMS?

	A.	query language and utilities
	B.	data manipulation language and query language
	C.	data dictionary and transaction log
	D.	data dictionary and query language
	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.

On a VLSM network, which mask should you use on point-to-point WAN links in order to reduce the waste of IP addresses?

	A.	/27
	B.	/28
	C.	/29
	D.	/30

Your Answer: Option

Correct Answer: Option D

Explanation:

A point-to-point link uses only two hosts. A /30, or 255.255.255.252, mask provides two hosts per subnet.

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15.

What port does squid listen, by default?

	A.	4322
	B.	2314
	C.	7334
	D.	3128
	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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16.

How many non-overlapping channels are available with 802.11g?

	A.	3
	B.	12
	C.	23
	D.	40

Your Answer: Option

Correct Answer: Option A

Explanation:

The IEEE 802.11g standard provides 3 non-overlapping channels.

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17.

What will be the output of the program?

class Test
{
public static void main(String [] args)
{
int x=20;
String sup = (x < 15) ? "small" : (x < 22)? "tiny" : "huge";
System.out.println(sup);
}
}

	A.	small
	B.	tiny
	C.	huge
	D.	Compilation fails

Your Answer: Option

Correct Answer: Option B

Explanation:

This is an example of a nested ternary operator. The second evaluation (x < 22) is true, so the "tiny" value is assigned to sup.

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18.

Today, programmable controllers:

	A.	are more powerful then the first controllers on the market
	B.	are relatively low cost compared with the original digital equipment available for industrial control
	C.	can be cost effective even when replacing just a few relays
	D.	All of the above
	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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19.

Which protocol does DHCP use at the Transport layer?

	A.	IP
	B.	TCP
	C.	UDP
	D.	ARP

Your Answer: Option

Correct Answer: Option C

Explanation:

User Datagram Protocol is a connection network service at the Transport layer, and DHCP uses this connectionless service.

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20.

Some Streams work with input, and some with output

	A.	True
	B.	False

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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