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3 years ago

Discuss the economical challenges in software reuse using suitable examples.

Computers and Technology

1 answer:

Liula [17]3 years ago

4 0

Answer: Reusing software device has some economical challenges such as:

Investment cost in reusing the device is considered as the extra cost.It might require some extra components for the working to become usable
Requires skilled person who can develop and design the software to be used again.The creating and designing of new software design is comparatively easy but making the system reusable requires someone who has more designing skill who will be highly paid for the work
Cost of writing and reading of the software can also be considered as the economical challenge as the reused system created is to be studied by some other organization members or sources not familiar with the functioning. .

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C programming question:

denpristay [2]

Answer:

You should do this:

if (0==strcmp(modelName,"Extravagant") && modelYear >= 1999 && modelYear <= 2002)

printf("%s\n","RECALL");

Explanation:

Lets consider this program and analyze the output.

int main()

{

int modelYear;

char modelName[30];

printf("enter the year");

scanf("%d",&modelYear);

printf("enter the modelname");

scanf("%s",modelName);

if (0==strcmp(modelName,"Extravagant") && modelYear >= 1999 && modelYear <= 2002)

printf("%s\n","RECALL"); }

if (0==strcmp(modelName,"Extravagant") && modelYear >= 1999 && modelYear <= 2002)

This statement has a function strcmp which is used to compare two strings.

If the user enters Extravagant as model name then this input will be compared by the string stored in modelName i.e. Extravagant, character by character. If the string entered by the user matches the string stored in modelName this means this part of the if condition evaluates to true. 0==strcmp means that both the strings should be equal.

The next part of the if statement checks if the model year entered is greater than or equal to 1999 AND less than or equal to 2002. This means that the model year should be between 1999 and 2002 (inclusive).

&& is the logical operator between both the parts of if statement which means that both should evaluate to true in order to display RECALL.

This is correct way to use because the if (modelName == "Extravagant" && modelYear >= 1999 && modelYear <= 2002) printf("%s\n","RECALL"); statement will not display RECALL. After entering the model name and model year it will move to the next line and exit.

So in if (0==strcmp(modelName,"Extravagant") && modelYear >= 1999 && modelYear <= 2002)

printf("%s\n","RECALL"); statement when the if condition evaluates to true, then RECALL is displayed in the output.

6 0

3 years ago

Explain the difference between social engineering and reverse social engineering.

san4es73 [151]

Social Engineering is the art of eliciting sensitive information from people by tricking them. Like through phishing, fake emails that contain a virus and fake programs. They get your password or any other sensitive information by making you think the website/program is legit. That's why you should always make sure the new website/program you visited is safe.

Reverse Social Engineering is, on the other hand, where the initial attacker becomes attacked. Or the victim redirects the attacker to someone who can counter the attacker. E.g attackers call the front desk and ask for information X. Instead or giving him information X, front desk redirects the call to the security department. An example is where the attacker is fed false information. Law enforcement agencies often perform this attack.

5 0

3 years ago

In Python please:

Sauron [17]

Answer:

import math

angle = float(input('Enter Angle: '))

shadowLength = float5(input('Enter Shadow Length: '))

tree_height = math.tan(angle)*shadowLength

print('Tree Height = {}'.format(tree_height))

Explanation:

From the equation given, the first step is to derive the equation for calculating the Tree Height.

$tan(angleElevation) = tree height / shadow length\\\\tree height = tan(angleElevation) * shadow length$

In order to calculate the tangent of an angle, the math module has to be imported. math module allows the program to perform advanced math operations.

The program then prompts the user to input values for angle and shadow length.

The inputted values are converted to floats and used in the equation that was derived for Tree height.

Three height is evaluated and the result is printed to the screen

4 0

3 years ago

The term _____ best describes the level of technology skills needed in today’s business world.A: computer knowledgeB: computer f

Alja [10]

Answer:

The answer is "Option B"

Explanation:

The ability to learn and use basic computer hardware and software understanding to solve problems and to access information is known as computer fluency. and other options are not correct, that can be defined as follows:

In option A, computer knowledge is a basic general awareness, that helps the user to use the computer more fluently, that's why it is not correct.
In option C, It is an internal feature of the computer, that helps to transfer data, that's why it is not correct.
In option D, computer information is also known as data that is stored in the computer, that's why it is not correct.

6 0

3 years ago

Demote the "Arrive and leave at the same time each day." List item, and then promote the "Respect" list item.

garri49 [273]

Answer:

Dear

<h3>You should wear something professional. A tie, suit, classy dress, heels. You are more likely to be hired if you make it look like you take pride in your appearance. Also, depending on what kind of job you are applying for, the outfits can vary as well.</h3>

Explanation:

Black is too formal for interviews, and earth tones are too casual. Two-button suits are the professional standard.

7 0

3 years ago