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3 years ago

Which of the following statements is true?

Computers and Technology

1 answer:

Luden [163]3 years ago

6 0

Answer:

Option (A) int expressions are always computed exactly; but float expressions can suffer round-off error.

Explanation:

Round - Off Error can be defined as the digital computers have limitations on denoting the decimal numbers, due to this the floating point numbers have to be rounded off or even it is represented exactly after the calculation on the numbers the resulting number has to be adjusted / rounded off according to the specified precision. The resulted number has to be rounded off back to the required precision, this leads to the round off errors in digital computers. As integers don't need to go through the rounding off in computers, the integer numbers don't have round off errors, only floating point numbers have round off errors. So, options (B) , (C) and (D) are false.

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(Game Design) Which of the following is NOT a name of a popular digital sculpting application?

Savatey [412]

Claymation option A

Because Claymation is not the game design application.it is also called clay animation.

7 0

3 years ago

Encryption that uses 16-character keys is known as ____. strong 128-bit encryption strong 256-bit encryption military-strength 5

allsm [11]

Answer: Strong 128-bit encryption.

Explanation: An individual character corresponds to 8 bits . So if there are 16 characters then,

16 $\times$ 8=128 bits keys

This makes the 128 bit key encryption the strongest amongst all other options.It is strongest because it is almost impossible to decode the 128-character key by any method e.g.-brute-force method.

Other options are incorrect because the characters given by the other bits are as follows: ${\frac{256}{8}$ =32 characters

${\frac{512}{8}$ =64 characters

${\frac{512}{8}$ =128 characters

Thus, the strongest character key is of 128 bits. for cipher.

3 0

3 years ago

In mathematics, "quadrant I" of the cartesian plane is the part of the plane where x and y are both positive. Given a variable,

lbvjy [14]

Answer:

#include <iostream>

using namespace std;

struct Cartesian {

double x;

double y;

};

int main() {

// creating a pointer p of type struct Cartesian

struct Cartesian *p = new Cartesian ;

cout << " Enter x: ";

// accessing the structure variable x by arrow "->"

cin >> p->x;

cout << "Enter y: ";

// accessing the structure variable y by arrow "->"

cin >> p->y;

// expression to check whether x and y lie in Quadrant 1

if (p->x > 0 && p->y > 0) {

cout << "X and Y are in Quadrant 1 ";

}

else

{

cout << "x And y are not in Quadrant 1";

}

// deleting the struct pointer p

delete p;

return 0;

}

Explanation:

in order to locate memory in heap, keyword "new" is used in C++ so,

struct Cartesian *p = new Cartesian ;

in order to access data members of the structure using pointer we always use an arrow "->". otherwise a dot oprerator is used to access data members.

in order to check whether x and y lie in 1st quadrent, we must use && operator in our if condition. so

if (p->x > 0 && p->y > 0)

&& will return true iff x and y both are +ve.

deleting the struct pointer p is important beacuse we are allocating memory in heap so heap memory should be used a resource and must be release when not needed otherwise it can cause memory leakage problems. so

delete p;

5 0

3 years ago

The implementation stage of the SDLC is when the system is moved into operation where it can be used. What stage PRECEDES the im

antiseptic1488 [7]

The stage that precedes the implementation stage of SDLC is <u>testing</u> and it involves checking the functionality of the system.

System design involves the process of determining an overall system architecture, which typically comprises the following:

Hardware.

End users.

Physical processing components.

Software.

Communication channel.

Generally, there are seven (7) main stages in the systems development life cycle (SDLC) model and these include:

1. Planning.

2. Analysis.

3. Design.

4. Development.

5. Testing.

6. Implementation.

7. Maintenance.

From the above, we can deduce that the stage which precedes the implementation stage of SDLC is testing.

During the testing stage of SDLC, a quality assurance (QA) expert checks the system to determine whether or not it is functioning properly before it is deployed for operation, which is where the system can be used.

7 0

3 years ago

Look at the following structure declaration.

myrzilka [38]

Answer:

B. a tag

Explanation:

In the structure definition given below:

struct Employee

{

string name;

int idNum;

};

Employee corresponds to the tag of the structure. The tag is used to create additional instances of the structure. For example:

struct Employee e1;

struct Employee e2;

name and idNum are members of the Employee structure and are referenced using the dot notation. e.g.,

struct Employee e1;

e1.idNum=1;

7 0

3 years ago