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3 years ago

Variablesallow us to manipulate data through the ___________.

Computers and Technology

1 answer:

gladu [14]3 years ago

8 0

Answer:

Reference

Explanation:

Variables provide reference to the stored data value.

For example:

int i = 0;

Here i is a variable of type int with an initial value of 0. i is a reference to this stored value 0. Now if I want to update the data, I can do so using this reference.

i = 1;

Now the reference is used to manipulate the stored data and change it to 1. In a similar manner all updates to the value can be done using the variable reference.

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In Linux, when logged in as a normal user with root privileges, which command must precede the apt-get command in the command li

siniylev [52]

Answer:

"sudo" is the command to get super user or root privileges in linux.

Explanation:

in order to install package with root privilege in linux, the command would be

sudo apt-get install <package name>

8 0

3 years ago

Suppose that the tuition for a university is $10,000 this year and increases 4% every year. In one year, the tuition will be $10

seropon [69]

Answer:

The programming language is not stated; however, I'll answer using Python programming language (See attachment for proper format)

tuition = 10000

rate = 0.04

for i in range(1,15):

tuition = tuition + tuition * rate

if i <= 10:

print("Year "+str(i)+" tuition:",end=" ")

print(round(tuition,2))

if i == 14:

print("Tuition 4th year after:",end=" ")

print(round(tuition,2))

Explanation:

The first 2 lines initializes tuition and rate to 10000 and 0.04 respectively

tuition = 10000

rate = 0.04

The next line iterates from year 1 to year 14

for i in range(1,15):

This line calculates the tuition for each year

tuition = tuition + tuition * rate

The next 3 lines prints the tuition for year 1 to year 10

if i <= 10:

print("Year "+str(i)+" tuition:",end=" ")

print(round(tuition,2))

The next 3 lines prints the tuition at the 4th year after year 10 (i.e. year 14)

if i == 14:

print("Tuition 4th year after:",end=" ")

print(round(tuition,2))

7 0

3 years ago

You are the CEO of a large tech company and have just received an angry email that looks like it came from one of your biggest c

sergejj [24]

Answer: as a whale attack

Explanation:

A whale attack is simply refered to as an attack that is utilized by cybercriminals and in this case, a senior player such as the CEO is targeted in the company and the aim is to steal sensitive information from them or steal money or gain access to their computer for fraudulent purposes.

Based on the explanation above, the attack called into is a whale attack.

4 0

3 years ago

The waterfall model and spiral model are variations of SDLC. Do some research to find out what they are and explain how these mo

Radda [10]

Waterfall model and spiral model are used in software development life cycle or SDLC. Any software development process follows one of these models depending on the type of software and the requirements of the customer.

Waterfall model

This model is called as sequential model since it works in stages. The output of first stage becomes the input of the second stage.

The errors of the first stage can be rectified only when it is completed. This is time consuming and makes the process lengthy. Stage 1 is completed before stage 2 begins.

The six stages involved in waterfall model are Requirement Gathering and analysis, System Design, Implementation, Integration and Testing, Deployment of system, and Maintenance.

Spiral model

This model is implemented in iterations. It is also called evolutionary model.

Initially a prototype of the system is prepared. Then, it is followed by development of small parts of the system.

These smaller parts are then assembled to produce the final system.

The four stages which form the spiral model are Identification, Design, Development and Evaluation and Risk Analysis.

The differences between the two models are summarized below.

1. Waterfall model works in linear method. Spiral model follows evolutionary method.

2. Errors and risks are discovered/ rectified after the stage is over. Errors and risks are discovered/ rectified earlier.

3. Waterfall model is suitable for small projects. Spiral model is suitable for large projects.

4. Requirements identification and planning is the initial stage in the waterfall model. Requirements identification and planning is done when needed, in the spiral model.

5. Waterfall model allows little to no flexibility in the system. Spiral model allows flexibility in the system.

6. Low flexibility makes the waterfall model more risky. High flexibility makes the spiral model less risky.

7. Waterfall model, overall, takes less time since requirements are clear. Spiral model is implemented when the requirements of the system are not clear and become clear through prototypes.

8 0

3 years ago

When using an online media source, students should ensure the information is

OLEGan [10]

Viable and true. hope this helps!

6 0

3 years ago

Read 2 more answers