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 :-).

Which WLAN IEEE specification allows up to 54Mbps at 2.4GHz?

	A.	A
	B.	B
	C.	G
	D.	N

Your Answer: Option

Correct Answer: Option C

Explanation:

IEEE 802.11B is 2.4GHz, but with a maximum of only 11Mbps. IEEE 802.11G is in the 2.4GHz range, with a top speed of 54Mbps.

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Which of the following commands will allow you to set your Telnet password on a Cisco router?

	A.	line telnet 0 4
	B.	line aux 0 4
	C.	line vty 0 4
	D.	line con 0

Your Answer: Option

Correct Answer: Option C

Explanation:

The command line vty 0 4 places you in a prompt that will allow you to set or change your Telnet password.

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The terms "red book", "yellow book", and "orange book" refer to:

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 are the correct ways to declare a delegate for calling the function func() defined in the sample class given below?

class Sample
{
public int func(int i, Single j)
{
/* Add code here. */
}
}

	A.	delegate d(int i, Single j);
	B.	delegate void d(int, Single);
	C.	delegate int d(int i, Single j);
	D.	delegate void (int i, Single j);
	E.	delegate int sample.func(int i, Single j);

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 keyword is used to overload an operator?

	A.	overload
	B.	operator
	C.	friend
	D.	override

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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Of the three ways to pass arguments to functions, only passing by _____ and passing by _____ allow the function to modify the argument in the calling program

	A.	reference, pointer
	B.	array, location
	C.	array, pointer
	D.	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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The library function used to find the last occurrence of a character in a string is

	A.	strnstr()
	B.	laststr()
	C.	strrchr()
	D.	strstr()

Your Answer: Option

Correct Answer: Option C

Explanation:

Declaration: char *strrchr(const char *s, int c);

It scans a string s in the reverse direction, looking for a specific character c.

Example:

#include <string.h>
#include <stdio.h>

int main(void)
{
   char text[] = "I learn through IndiaBIX.com";
   char *ptr, c = 'i';

   ptr = strrchr(text, c);
   if (ptr)
      printf("The position of '%c' is: %d\n", c, ptr-text);
   else
      printf("The character was not found\n");
   return 0;
}

Output:

The position of 'i' is: 19

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Which one of the following options is correct?

	A.	Friend function can access public data members of the class.
	B.	Friend function can access protected data members of the class.
	C.	Friend function can access private data members of the class.
	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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After a table has been created, its structure can be modified using the SQL command:

	A.	UPDATE TABLE [TableName].
	B.	MODIFY TABLE [TableName].
	C.	ALTER TABLE [TableName].
	D.	CHANGE TABLE [TableName].

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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10.

When are the Global objects destroyed?

	A.	When the control comes out of the block in which they are being used.
	B.	When the program terminates.
	C.	When the control comes out of the function in which they are being used.
	D.	As soon as local objects die.

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 statements are correct?

	A.	Constructor is always called explicitly.
	B.	Constructor is called either implicitly or explicitly, whereas destructor is always called implicitly.
	C.	Destructor is always called explicitly.
	D.	Constructor and destructor functions are not called at all as they are always inline.

Your Answer: Option

Correct Answer: Option B

Explanation:

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

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12.

Trend analysis:

	A.	is used only in financial planning
	B.	can improve control system response
	C.	requires a very expensive system to implement
	D.	is a brand new concept
	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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13.

Views constructed from SQL SELECT statements that conform to the SQL-92 standard may not contain:

	A.	GROUP BY.
	B.	WHERE.
	C.	ORDER BY.
	D.	FROM

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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14.

If no multivalued attributes exist in a relation, then the relation is in what normal form?

	A.	First normal form
	B.	Second normal form
	C.	Third normal form
	D.	Fourth normal form

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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15.

Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?

Switch
NIC
Hub
Repeater
RJ45 transceiver

	A.	1 only
	B.	1 and 3
	C.	3 and 4
	D.	5 only

Your Answer: Option

Correct Answer: Option C

Explanation:

Not that you really want to enlarge a single collision domain, but a hub (multiport repeater) will provide this for you.

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16.

Which of the following statements is correct about namespaces in C#.NET?

	A.	Namespaces can be nested only up to level 5.
	B.	A namespace cannot be nested.
	C.	There is no limit on the number of levels while nesting namespaces.
	D.	If namespaces are nested, then it is necessary to use using statement while using the elements of the inner namespace.
	E.	Nesting of namespaces is permitted, provided all the inner namespaces are declared in the same file.

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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17.

Computer accounts and user accounts in your domain have been seperated into OUs for administrative purpose. You want to require strong passwords for the local user accounts only. What should you do?

	A.	Set a Group Policy on each local computer to enable the passwords must meet complexity requirements policy
	B.	Set a Group Policy on the domain to enable the passwords must meet complexity requirements policy
	C.	Set a Group Policy on all OUs containing computer accounts to enable the passwords must meet complexity requirements policy
	D.	Set a Group Policy on all OUs containing user accounts to enable the passwords must meet complexity requirements policy
	E.	None of above

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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18.

The _____ houses the switches in token ring.

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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19.

Which of the following statements is correct about a namespace in C#.NET?

	A.	Namespaces help us to control the visibility of the elements present in it.
	B.	A namespace can contain a class but not another namespace.
	C.	If not mentioned, then the name 'root' gets assigned to the namespace.
	D.	It is necessary to use the using statement to be able to use an element of a namespace.
	E.	We need to organise the classes declared in Framework Class Library into different namespaces.

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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20.

When a new trunk link is configured on an IOS-based switch, which VLANs are allowed over the link?

	A.	By default, all VLANs are allowed on the trunk.
	B.	No VLAN's are allowed, you must configure each VLAN by hand.
	C.	Only configured VLAN's are allowed on the link.
	D.	Only extended VLAN's are allowed by default.

Your Answer: Option

Correct Answer: Option A

Explanation:

By default, all VLANs are allowed on the trunk link and you must remove by hand each VLAN that you don't want traversing the trunked link.

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