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 :-).

What will the function rewind() do?

	A.	Reposition the file pointer to a character reverse.
	B.	Reposition the file pointer stream to end of file.
	C.	Reposition the file pointer to begining of that line.
	D.	Reposition the file pointer to begining of file.

Your Answer: Option

Correct Answer: Option D

Explanation:

rewind() takes the file pointer to the beginning of the file. so that the next I/O operation will take place at the beginning of the file.
Example: rewind(FilePointer);

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Which of the following is valid SQL for an Index?

	A.	CREATE INDEX ID;
	B.	CHANGE INDEX ID;
	C.	ADD INDEX ID;
	D.	REMOVE INDEX ID;

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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Which one of the following symbols is not used in an ERD?

	A.	Rectangle
	B.	Oval
	C.	Diamond
	D.	Circle

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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A number of related records that are treated as a unit is called

	A.	file
	B.	field
	C.	data
	D.	batch
	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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Maria needs to install software on a Windows NT Server computer which is a backup domain controller. When she attempts to log on to the server, she receives the message "Unable to log on locally". What must you do to enable Maria to log on to the server?

	A.	In User Manager for Domains, define Maria as a local account
	B.	In User Manager for Domains, assign Maria to a group that has the right to log on locally
	C.	In the System option in Control Panel, select the setting that allows users to log on locally
	D.	In the System option in Control Panel, set the user environment variables to allow Maria to log on locally
	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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Which of the following is the correct class of the object cout?

	A.	iostream
	B.	istream
	C.	ostream
	D.	ifstream

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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To configure the VLAN trunking protocol to communicate VLAN information between two switches, what two requirements must be met?

Each end of the trunk link must be set to the IEEE 802.1e encapsulation.
The VTP management domain name of both switches must be set the same.
All ports on both the switches must be set as access ports.
One of the two switches must be configured as a VTP server.
A rollover cable is required to connect the two switches together.
A router must be used to forward VTP traffic between VLANs.

	A.	1, 2 and 4
	B.	3, 5 and 6
	C.	2 and 4
	D.	1 and 6

Your Answer: Option

Correct Answer: Option C

Explanation:

You must have the same VTP domain name on all switches in order to share VLAN information between the switches. At least one of the switches must be a VTP server; the other switches should be set to VTP client.

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The SQL keyword BETWEEN is used:

	A.	for ranges.
	B.	to limit the columns displayed.
	C.	as a wildcard.
	D.	None of the above is correct.

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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What command is used with vi editor to append text at end of line?

	A.	I
	B.	i
	C.	a
	D.	A
	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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10.

Which of the following statements are correct about the Collection Classes available in Framework Class Library?

	A.	Elements of a collection cannot be transmitted over a network.
	B.	Elements stored in a collection can be retrieved but cannot be modified.
	C.	It is not easy to adopt the existing Collection classes for newtype of objects.
	D.	Elements stored in a collection can be modified only if allelements are of similar types.
	E.	They use efficient algorithms to manage the collection, thereby improving the performance of the program.

Your Answer: Option

Correct Answer: Option E

Explanation:

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

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11.

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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12.

How many times can a constructor be called during lifetime of the object?

	A.	As many times as we call it.
	B.	Only once.
	C.	Depends upon a Project Setting made in Visual Studio.NET.
	D.	Any number of times before the object gets garbage collected.
	E.	Any number of times before the object is deleted.

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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13.

In which of the following can many entity instances of one type be related to many entity instances of another type?

	A.	One-to-One Relationship
	B.	One-to-Many Relationship
	C.	Many-to-Many Relationship
	D.	Composite Relationship

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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14.

Which of the following protocols support VLSM, summarization, and discontiguous networking?

RIPv1
IGRP
EIGRP
OSPF
BGP
RIPv2

	A.	1 and 4
	B.	2 and 5
	C.	3, 4 and 6
	D.	All of the above

Your Answer: Option

Correct Answer: Option C

Explanation:

RIPv1 and IGRP are true distance-vector routing protocols and can't do much, really-except build and maintain routing tables and use a lot of bandwidth! RIPv2, EIGRP, and OSPF build and maintain routing tables, but they also provide classless routing, which allows for VLSM, summarization, and discontiguous networking.

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15.

A translator which reads an entire programme written in a high level language and converts it into machine language code is:

	A.	assembler
	B.	translator
	C.	compiler
	D.	system software

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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16.

Which command sends the word count of the file infile to the newfile.

	A.	wc infile >newfile
	B.	wc newfile
	C.	wc infile - newfile
	D.	wc infile \| newfile
	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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17.

In analyzing the compilation of PL/I program, the term "Syntax analysis" is associated with

	A.	recognition of basic syntactic constructs through reductions
	B.	recognition of basic elements and creation of uniform symbols
	C.	creation of more optional matrix
	D.	use of macro processor to produce more optimal assembly code

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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18.

In SQL, GRANT command is used to

	A.	allow user to access databases
	B.	allow user to create databases
	C.	grant system privileges, roles, and object privileges to uses and roles
	D.	choose auditing for specific SQL commands
	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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19.

On the 16-bit ISA bus, IRQ2 is elevated to which higher level Interrupt?

	A.	9
	B.	11
	C.	13
	D.	15
	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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20.

Which of the following is the correct usage of conditional operators used in C?

	A.	a>b ? c=30 : c=40;
	B.	a>b ? c=30;
	C.	max = a>b ? a>c?a:c:b>c?b:c
	D.	return (a>b)?(a:b)

Your Answer: Option

Correct Answer: Option C

Explanation:

Option A: assignment statements are always return in paranthesis in the case of conditional operator. It should be a>b? (c=30):(c=40);

Option B: it is syntatically wrong.

Option D: syntatically wrong, it should be return(a>b ? a:b);

Option C: it uses nested conditional operator, this is logic for finding greatest number out of three numbers.

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