C Programming Test (Random Questions)

C 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 :-).

The SQL command to create a table is:

	A.	MAKE TABLE.
	B.	ALTER TABLE.
	C.	DEFINE TABLE.
	D.	CREATE TABLE.

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 is an SQL trigger supported by Oracle?

	A.	BEFORE
	B.	INSTEAD OF
	C.	AFTER
	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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An Enterprise Resource Planning application is an example of a(n) ________ .

	A.	single-user database application
	B.	multiuser database application
	C.	e-commerce database application
	D.	data mining database application

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 is correct about class and structure?

	A.	class can have member functions while structure cannot.
	B.	class data members are public by default while that of structure are private.
	C.	Pointer to structure or classes cannot be declared.
	D.	class data members are private by default while that of structure are public by default.

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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For every relationship, how many possible types of actions are there when enforcing minimum cardinalities?

	A.	Two
	B.	Three
	C.	Four
	D.	Six

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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public class MyOuter
{
public static class MyInner
{
public static void foo() { }
}
}

which statement, if placed in a class other than MyOuter or MyInner, instantiates an instance of the nested class?

	A.	MyOuter.MyInner m = new MyOuter.MyInner();
	B.	MyOuter.MyInner mi = new MyInner();
	C.	MyOuter m = new MyOuter(); MyOuter.MyInner mi = m.new MyOuter.MyInner();
	D.	MyInner mi = new MyOuter.MyInner();

Your Answer: Option

Correct Answer: Option A

Explanation:

MyInner is a static nested class, so it must be instantiated using the fully-scoped name of MyOuter.MyInner.

Option B is incorrect because it doesn't use the enclosing name in the new.

Option C is incorrect because it uses incorrect syntax. When you instantiate a nested class by invoking new on an instance of the enclosing class, you do not use the enclosing name. The difference between Option A and C is that Option C is calling new on an instance of the enclosing class rather than just new by itself.

Option D is incorrect because it doesn't use the enclosing class name in the variable declaration.

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Which of the following are(is) Language Processor(s)

	A.	assembles
	B.	compilers
	C.	interpreters
	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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_____ is the ratio of correct information to the total amount of information produced over a period.

	A.	accuracy
	B.	concise
	C.	simulation
	D.	decision
	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 is the maximum distance running the lowest data rate for 802.11g?

	A.	About 100 feet
	B.	About 175 feet
	C.	About 300 feet
	D.	About 350 feet

Your Answer: Option

Correct Answer: Option C

Explanation:

The IEEE 802.11g standard's lowest data rate is 6Mbps, but it can run from a distance of about 300 feet.

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10.

The first step in database development is which of the following?

	A.	Enterprise data modeling
	B.	Logical database design
	C.	Physical database design and definition
	D.	Database Implementation

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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11.

Which command is used to remove an index from the database in SQL?

	A.	DELETE INDEX
	B.	DROP INDEX
	C.	REMOVE INDEX
	D.	ROLL BACK INDEX
	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.

For the code snippet given below, which of the following statements are valid?

public class MyContainer<T> where T: IComparabte
{
// Insert code here
}

1 Class MyContainer requires that it's type argument must implement IComparabte interface.

2 Type argument of class MyContainer must be IComparabte.

3 Compiler will report an error for this block of code.

4 This requirement on type argument is called as constraint.

	A.	1 and 2 Only
	B.	1, 2 and 3 Only
	C.	1 and 4 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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13.

The string built using the String class are immutable (unchangeable), whereas, the ones built- using the StringBuilder class are mutable.

	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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14.

Which method is used to connect a remote computer?

	A.	Device
	B.	Dialup
	C.	Diagnostic
	D.	Logic circuit
	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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15.

Which of the following statement is incorrect??

	A.	The default value for an argument can be a global constant.
	B.	The default arguments are given in the function prototype.
	C.	Compiler uses the prototype information to build a call, not the function definition.
	D.	The default arguments are given in the function prototype and should be repeated in the function definition.

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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16.

Where is a hub specified in the OSI model?

	A.	Session layer
	B.	Physical layer
	C.	Data Link layer
	D.	Application layer

Your Answer: Option

Correct Answer: Option B

Explanation:

Hubs regenerate electrical signals, which are specified at the Physical layer.

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17.

If a class Student has an indexer, then which of the following is the correct way to declare this indexer to make the C#.NET code snippet given below work successfully?

Student s = new Student(); 
s[1, 2] = 35;

	A.	class Student { int[ ] a = new int[5, 5]; public property WriteOnly int this[int i, int j] { set { a[i, j] = value; } } }
	B.	class Student { int[ , ] a = new int[5, 5]; public int property WriteOnly { set { a[i, j] = value; } } }
	C.	class Student { int[ , ] a = new int[5, 5]; public int this[int i, int j] { set { a[i, j] = value; } } }
	D.	class Student { int[ , ] a = new int[5, 5]; int i, j; public int this { set { a[i, j] = value; } } }

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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18.

Which collection class allows you to access its elements by associating a key with an element's value, and provides synchronization?

	A.	java.util.SortedMap
	B.	java.util.TreeMap
	C.	java.util.TreeSet
	D.	java.util.Hashtable

Your Answer: Option

Correct Answer: Option D

Explanation:

Hashtable is the only class listed that provides synchronized methods. If you need synchronization great; otherwise, use HashMap, it's faster.

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19.

Eliminating modification anomalies is a(n) ________ of normalization.

	A.	advantage
	B.	disadvantage
	C.	either an advantage or disadvantage
	D.	neither an advantage nor disadvantage

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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20.

Specialization is which of the following processes?

	A.	Defining one or more subtypes of the supertype and forming supertype/subtype relationships.
	B.	Defining one or more supertypes of the subtype and forming supertype/subtype relationships.
	C.	Defining one or more subtypes of the supertype and not forming supertype/subtype relationships.
	D.	Defining one or more supertypes of the subtype and not forming supertype/subtype relationships.

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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