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 bitwise operator is suitable for turning on a particular bit in a number?

	A.	&& operator
	B.	& operator
	C.	\|\| operator
	D.	\| operator

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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What layer in the TCP/IP stack is equivalent to the Transport layer of the OSI model?

	A.	Application
	B.	Host-to-Host
	C.	Internet
	D.	Network Access

Your Answer: Option

Correct Answer: Option B

Explanation:

The four layers of the TCP/IP stack (also called the DoD model) are Application/Process, Host-to-Host, Internet, and Network Access. The Host-to-Host layer is equivalent to the Transport layer of the OSI model.

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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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You have a network with a subnet of 172.16.17.0/22. Which is the valid host address?

	A.	172.16.17.1 255.255.255.252
	B.	172.16.0.1 255.255.240.0
	C.	172.16.20.1 255.255.254.0
	D.	172.16.18.255 255.255.252.0

Your Answer: Option

Correct Answer: Option D

Explanation:

A Class B network ID with a /22 mask is 255.255.252.0, with a block size of 4 in the third octet. The network address in the question is in subnet 172.16.16.0 with a broadcast address of 172.16.19.255. Only option E even has the correct subnet mask listed, and 172.16.18.255 is a valid host.

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When you have finished entering information into a form

	A.	the template is written to the data file
	B.	the contents of the form are written to the data file
	C.	the contents of the form can be printed
	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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A multifield transformation does which of the following?

	A.	Converts data from one field into multiple fields
	B.	Converts data from multiple fields into one field
	C.	Converts data from multiple fields into multiple fields
	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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The best form of coupling is _____

	A.	complete
	B.	tight
	C.	loose
	D.	free

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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Which one of the following classes are present System.Collections.Generic namespace?

1 Stack

2 Tree

3 SortedDictionary

4 SortedArray

	A.	1 and 2 only
	B.	2 and 4 only
	C.	1 and 3 only
	D.	All of the above
	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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Storing a separate copy of the database at multiple locations is which of the following?

	A.	Data Replication
	B.	Horizontal Partitioning
	C.	Vertical Partitioning
	D.	Horizontal and Vertical Partitioning

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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10.

Relations are:

	A.	two-dimensional tables.
	B.	three-dimensional tables.
	C.	four-dimensional tables.
	D.	five-dimensional tables.

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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11.

What will be the output of the program?

#include<stdio.h>
#include<stdarg.h>
void fun1(char, int, int *, float *, char *);
void fun2(char ch, ...);
void (*p1)(char, int, int *, float *, char *);
void (*p2)(char ch, ...);

int main()
{
char ch='A'; int i=10;
float f=3.14; char *p="Hello";
p1=fun1;
p2=fun2;
(*p1)(ch, i, &i, &f, p);
(*p2)(ch, i, &i, &f, p);
return 0;
}
void fun1(char ch, int i, int *pi, float *pf, char *p)
{
printf("%c %d %d %f %s \n", ch, i, *pi, *pf, p);
}
void fun2(char ch, ...)
{
int i, *pi; float *pf; char *p;
va_list list;
printf("%c ", ch);
va_start(list, ch);
i = va_arg(list, int);
printf("%d ", i);

pi = va_arg(list, int*);
printf("%d ", *pi);
pf = va_arg(list, float*);
printf("%f ", *pf);
p = va_arg(list, char *);
printf("%s", p);
}

	A.	A 10 3.14 A 10 3.14
	B.	A 10 10 3.140000 Hello A 10 10 3.140000 Hello
	C.	A 10 Hello A 10 Hello
	D.	Error

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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12.

A regular subquery can be processed:

	A.	from the top down.
	B.	from the bottom up.
	C.	by nesting.
	D.	None of the above is correct.

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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13.

What SQL command can be used to delete columns from a table?

	A.	MODIFY TABLE TableName DROP COLUMN ColumnName
	B.	MODIFY TABLE TableName DROP ColumnName
	C.	ALTER TABLE TableName DROP COLUMN ColumnName
	D.	ALTER TABLE TableName DROP ColumnName

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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14.

What command is used to sort the lines of data in a file in alphabetical order?

	A.	sort - r
	B.	st
	C.	sh
	D.	sort
	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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15.

What is the type of Oracle backup in which all uncommitted changes have been removed from the datafiles?

	A.	Full backup
	B.	Consistent backup
	C.	Inconsistent backup
	D.	Differential backup

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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16.

Data item characteristics that are important in data management include

	A.	punctuation
	B.	language
	C.	spelling
	D.	width
	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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17.

You need to find the broadcast address used on a LAN on your router. What command will you type into the router from user mode to find the broadcast address?

	A.	show running-config
	B.	show startup-config
	C.	show interfaces
	D.	show protocols

Your Answer: Option

Correct Answer: Option C

Explanation:

The command show ip protocols will actually show you the broadcast address for each interface - too bad it isn't a possible answer. Your best answer is show interfaces, which will provide the IP address and mask for each interface.

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18.

Multiplicity is the same as what concept for an ERD?

	A.	Relationship
	B.	Attribute
	C.	Entity
	D.	Cardinality

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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19.

What is Hypertext Transfer Protocol (HTTP)?

	A.	The protocol to copy files between computers
	B.	The transfer protocol to transfer Web pages to a browser
	C.	The database access protocol for SQL statements
	D.	The hardware/software protocol that limits access to company data

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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20.

A dielectric material is:

	A.	a good conductor
	B.	a good insulator
	C.	a poor conductor of electrostatic fields
	D.	a good conductor of magnetic fields
	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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