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 is NOT one of the most common types of SQL CHECK constraints?

	A.	System date
	B.	Range checks
	C.	Lists of values
	D.	Comparing one column value to another within the same table

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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Sequential retrieval on a primary key for sequential file storage has which of the following features?

	A.	Very fast
	B.	Moderately fast
	C.	Slow
	D.	Impractical

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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The time required for the fetching and execution of one simple machine instruction is

	A.	Delay time
	B.	CPU cycle
	C.	Real time
	D.	Seek time
	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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When mapping a many-to-many unary relationship into a relation which of the following is true?

	A.	One relation is created.
	B.	Two relations are created.
	C.	Three relations are created.
	D.	Four relations are created.

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 snippets are the correct way to convert a Single into a String?

1 Single f = 9.8f;
String s;
s = (String) (f);

2 Single f = 9.8f;
String s;
s = Convert.ToString(f);

3 Single f = 9.8f;
String s;
s = f.ToString();

4 Single f = 9.8f;
String s;
s = Clnt(f);

5 Single f = 9.8f;
String s;
s = CString(f);

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

Your Answer: Option

Correct Answer: Option B

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, determining foreign keys is (part of) the:

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

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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While working with mail command, which command is used to save mail in a separate file?

	A.	s
	B.	r
	C.	w
	D.	d
	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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What does the transport protocol do?

	A.	It defines how data should be presented to the next receiving layer, packages the data accordingly, and then passes the data to the application through the session layer interface.
	B.	It provides low-level access to the network adapters by providing data transmission support and some basic adapter management functions
	C.	It supports communications between applications on different computers by creating sessions, defining data-exchange formats, and providing application-support services
	D.	It is responsible for establishing logical names on the network, establishing connections between two logical names on the network, and supporting reliable data transfer between computers that have established a session
	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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What form of energy is used to maintain an imbalance of charges between the terminals of a battery?

	A.	Electronical energy
	B.	Mechanical energy
	C.	Chemical energy
	D.	Solar energy
	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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10.

Features of XML include which of the following?

	A.	The tags are used to describe the appearance of the content.
	B.	Addresses the structuring and manipulation of the data involved.
	C.	Governs the display of information in a Web browser.
	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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11.

Which of the following series of commands will restrict Telnet access to the router?

	A.	Lab_A(config)#access-list 10 permit 172.16.1.1 Lab_A(config)#line con 0 Lab_A(config-line)#ip access-group 10 in
	B.	Lab_A(config)#access-list 10 permit 172.16.1.1 Lab_A(config)#line vty 0 4 Lab_A(config-line)#access-class 10 out
	C.	Lab_A(config)#access-list 10 permit 172.16.1.1 Lab_A(config)#line vty 0 4 Lab_A(config-line)#access-class 10 in
	D.	Lab_A(config)#access-list 10 permit 172.16.1.1 Lab_A(config)#line vty 0 4 Lab_A(config-line)#ip access-group 10 in

Your Answer: Option

Correct Answer: Option C

Explanation:

Telnet access to the router is restricted by using either a standard or extended IP access list inbound on the VTY lines of the router. The command access-class is used to apply the access list to the VTY lines.

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12.

Sending a copy of data to a program module is called _______

	A.	passing a value
	B.	making a reference
	C.	recursion
	D.	setting a condition

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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13.

While working with MS-DOS, which command is used to display the contents of a file and pause the display after each screenful of information?

	A.	TYPE filename \| MORE
	B.	CAT filename \| MORE
	C.	CAT filename \| pg
	D.	MORE filename
	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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14.

The average time necessary for the correct sector of a disk to arrive at the read write head is _____

	A.	Down time
	B.	Seek time
	C.	Rotational delay
	D.	Access time
	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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15.

Which of the following statements concerning business rules is true?

	A.	It should be complex.
	B.	It should not be convertible to computer code.
	C.	It may include restrictions.
	D.	All 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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16.

Econometric models include techniques from

	A.	economics
	B.	statistics
	C.	mathematics
	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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17.

Which of the following statements are correct about delegates?

	A.	Delegates cannot be used to call a static method of a class.
	B.	Delegates cannot be used to call procedures that receive variable number of arguments.
	C.	If signatures of two methods are same they can be called through the same delegate object.
	D.	Delegates cannot be used to call an instance function. Delegates cannot be used to call an instance subroutine.

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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18.

Which of the following improves a query's processing time?

	A.	Write complex queries.
	B.	Combine a table with itself.
	C.	Query one query within another.
	D.	Use compatible data types.

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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19.

In which order do the following gets evaluated

1.Relational

2.Arithmetic

3.Logical

4.Assignment

	A.	2134
	B.	1234
	C.	4321
	D.	3214

Your Answer: Option

Correct Answer: Option A

Explanation:

2. Arithmetic operators: *, /, %, +, -
1. Relational operators: >, <, >=, <=, ==, !=
3. Logical operators : !, &&, ||
4. Assignment operators: =

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20.

An entity type is which of the following?

	A.	A major category of data about people, place, and things
	B.	The various departments of an organization
	C.	The application software
	D.	The business processes the support the mission of an organization

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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