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.
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All the best :-).

Which of the following is the preferred way to recover a database after a transaction in progress terminates abnormally?

	A.	Rollback
	B.	Rollforward
	C.	Switch to duplicate database
	D.	Reprocess transactions

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 frequency range of the IEEE 802.11b standard?

	A.	2.4Gbps
	B.	5Gbps
	C.	2.4GHz
	D.	5GHz

Your Answer: Option

Correct Answer: Option C

Explanation:

The IEEE 802.11b and IEEE 802.11g standards both run in the 2.4GHz RF range.

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Concurrency control is important for which of the following reasons?

	A.	To ensure data integrity when updates occur to the database in a multiuser environment
	B.	To ensure data integrity when updates occur to the database in a single-user environment
	C.	To ensure data integrity while reading data occurs to the database in a multiuser environment
	D.	To ensure data integrity while reading data occurs to the database in a single-user environment

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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Which cannot directly cause a thread to stop executing?

	A.	Calling the SetPriority() method on a Thread object.
	B.	Calling the wait() method on an object.
	C.	Calling notify() method on an object.
	D.	Calling read() method on an InputStream object.

Your Answer: Option

Correct Answer: Option C

Explanation:

Option C is correct. notify() - wakes up a single thread that is waiting on this object's monitor.

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Which of the following is true concerning the following statement: class Manager extends Employee

	A.	Manager is a concrete class and a superclass.
	B.	Manager is a concrete class and a subclass.
	C.	Manager is an abstract class and a superclass.
	D.	Manager is an abstract class and a subclass.

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 operators cannot be overloaded?

1 true

2 false

3 new

4 ~

5 sizeof

	A.	1, 3
	B.	2, 4
	C.	3, 5
	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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Which of the following can be used to terminate a while loop and transfer control outside the loop?

1 exit while

2 continue

3 exit statement

4 break

5 goto

	A.	1, 3
	B.	2, 4
	C.	3, 5
	D.	4, 5
	E.	None of these

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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Which prefixes are available to Oracle triggers?

	A.	:new only
	B.	:old only
	C.	Both :new and :old
	D.	Neither :new nor :old

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 is the decimal and hexadecimal equivalents of the binary number 10011101?

	A.	155, 0x9B
	B.	157, 0x9D
	C.	159, 0x9F
	D.	185, 0xB9

Your Answer: Option

Correct Answer: Option B

Explanation:

To turn a binary number into decimal, you just have to add the values of each bit that is a 1. The values of 10011101 are 128, 16, 8, 4, and 1. 128 + 16 + 8 + 4 + 1 = 157. Hexadecimal is a base-16 number system. The values of hexadecimal are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F-16 characters total, from which to create all the numbers you'll ever need. So, if 1001 in binary is 9, then the hexadecimal equivalent is 9. Since we then have 1101, which is 13 in binary, the hexadecimal answer is D and the complete hexadecimal answer is 0x9D.

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10.

Which of the following is true when describing a unicast address?

	A.	Packets addressed to a unicast address are delivered to a single interface.
	B.	These are your typical publicly routable addresses, just like a regular publicly routable address in IPv4.
	C.	These are like private addresses in IPv4 in that they are not meant to be routed.
	D.	These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.

Your Answer: Option

Correct Answer: Option A

Explanation:

Packets addressed to a unicast address are delivered to a single interface. For load balancing, multiple interfaces can use the same address.

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11.

The step-by-step instructions that solve a problem are called _____

	A.	an algorithm
	B.	a list
	C.	a plan
	D.	a sequential structure

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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12.

Can you use the fprintf() to display the output on the screen?

	A.	Yes
	B.	No

Your Answer: Option

Correct Answer: Option A

Explanation:

Do like this fprintf(stdout, "%s %d %f", str, i, a);

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13.

Acceptance testing is

	A.	running the system with line data by the actual user
	B.	making sure that the new programs do in fact process certain transactions according to Specifications
	C.	is checking the logic of one or more programs in the candidate systems
	D.	testing changes made in an existing or a new program
	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.

Database redesign is not terribly difficult if the:

	A.	database is structured.
	B.	database is well-designed.
	C.	database has no data.
	D.	database is relatively small.

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 about a String is correct?

	A.	A String is created on the stack.
	B.	Whether a String is created on the stack or the heap depends on the length of the String.
	C.	A String is a primitive.
	D.	A String can be created by using the statement String s1 = new String;
	E.	A String is created on the heap.

Your Answer: Option

Correct Answer: Option E

Explanation:

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

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16.

Convert the ASLA assembly language instructions into hexadecimal machine language:

	A.	0111EF
	B.	9001E6
	C.	DA000F
	D.	40

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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17.

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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18.

Which of the following statements regarding inline functions is correct?

	A.	It speeds up execution.
	B.	It slows down execution.
	C.	It increases the code size.
	D.	Both A and C.

Your Answer: Option

Correct Answer: Option D

Explanation:

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

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19.

Which JDBC driver Type(s) can be used in either applet or servlet code?

	A.	Both Type 1 and Type 2
	B.	Both Type 1 and Type 3
	C.	Both Type 3 and Type 4
	D.	Type 4 only

Your Answer: Option

Correct Answer: Option C

Explanation:

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

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20.

Destructor calls are made in which order of the corresponding constructor calls?

	A.	Reverse order
	B.	Forward order
	C.	Depends on how the object is constructed
	D.	Depends on how many objects are constructed

Your Answer: Option

Correct Answer: Option A

Explanation:

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

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