Answer:
I think its A. It is supported by many different experiments.
Explanation:
Final answer:
A scientific theory is an extensive explanation for phenomena of the natural world that is heavily supported by evidence from many experiments and observations. It is not just an educated guess, and while robust and well-substantiated, a theory is open to revision with new conflicting evidence.
Explanation:
A scientific theory is a comprehensive and well-substantiated explanation for a set of verified facts and observations about the natural world. It is supported by many different experiments and evidence from various lines of research, often spanning numerous disciplines. Scientific theories are not mere guesses—they are based on evidence that has been rigorously tested and repeatedly confirmed. For instance, the theory of evolution and the theory of plate tectonics are supported by a vast body of evidence and are widely accepted by the scientific community. These theories also provide powerful explanations that describe, explain, and predict natural phenomena and are always open to reassessment as new data emerges.
It is important to note that a scientific theory is different from an educated guess, which would be more accurately referred to as a hypothesis in scientific terminology. Additionally, while scientific theories are robust and well-supported, they are not immutable. If new evidence arises that contradicts a current theory, the scientific community must revisit and potentially revise the theory to account for the new information.
Two technicians are discussing bleeding air from the brake hydraulic system. Technician A says to depress the brake pedal slowly and not to the floor to prevent possible seal damage inside the master cylinder. Technician B says to wait 15 seconds between strokes of the brake pedal.
Answer:
Both
Explanation:
A single central register of IP addresses and names (a DNS style system) is an efficient means of translating human readable names to IP addresses. Which of the following is NOT solved by DNS?
A. It is inefficient to have everyone on the Internet maintain their own list of IP addresses.
B. There are too few IP addresses to meet the current demand.
C. When someone new joins the Internet they must inform everyone else of the new IP address
D. When an IP address changes, it is impossible to locate a computer until the owner announces the change.
Answer:
Option B: There are too few IP addresses to meet the current demand.
is the correct answer
Explanation:
As the demand of changing human names to IP addresses, it is difficult to meet because the human names can be uncountable and unlimited while in comparison to the IP addresses are somehow limited.
As IP addresses should be unique so that they maybe identified so the this uniqueness factor will not be able to fulfilled when we try to change all the names to IP addresses.
I hope it will help you!Why do most laptops have LCD rather than OLED displays, which are found on mobile devices?
OLED displays are more expensive
OLED displays are too small
OLED displays have too high of a resolution
OLED displays have too low of a resolution
Laptops have LCDs rather than OLED displays because:
OLED displays are more expensive. OLED materials are made up of diodes which consists of different colors.
Laptops typically use LCD displays instead of OLED because OLED technology is more expensive to produce, despite its superior color and viewing angle capabilities.
The primary reason most laptops have LCD displays rather than OLED displays, which are commonly found in mobile devices, is cost-related. OLED technology, known for its ability to show truer blacks and its capacity for a wider viewing angle, is generally more expensive to produce than LCD.
LCD displays function through the use of liquid crystals that modulate light, but they do not emit it directly, which differs from OLED where each pixel emits its own light. Moreover, the resolution of OLED displays is not inherently too high or too low for laptop use; it is the production cost that is the limiting factor. It is important for consumers to weigh the benefits against the higher cost and determine whether the added value of an OLED display justifies the investment for their specific needs.
(Pre-start checks must be made to ensure equipment is safe to use. Think about your computer and list three (3) points to check before commencing to use it.)
Three (3) points to check before using your computer or electronic equipment:
1. Check all the parts if they are completed and no missing parts. You must also check if all the parts are connected to each other properly. Loose wires and equipments may be unsafe and can create more damage if remained unnoticed.
2. Check for power. If your device is not turning on, you must check for power source. But be very careful. Your safety is more important.
3. When you have turned on the device, before you used the computer, you have to check for pending updates and start up prompts. These are unfinished tasks from previous users of the computer. Prompts that are running in the background may cause computer to run slow and as same as pending or unfinished updates.
A(n) ______ includes the blank spaces, tabs, and line breaks found within the file.
Answer:
A White Space
Explanation:
A white space refers to any section of a file that has a space around an object. These spaces help to indicate blanks, separate individual words, line breaks and paragraphs of texts from other parts of the file (document). They are commonly used for formating text in files/documents in order to prevent overcrowded documents and help to improve readability.
A delimiter includes blank spaces, tabs, and line breaks in a file, critical for separating and properly aligning columns in flat files where data is structured in a tabular format.
Explanation:A delimiter or separator includes the blank spaces, tabs, and line breaks found within the file, especially in the context of flat files where structured data are organized. The role of the delimiter is to separate each column or field within the file. For instance, a space might separate the "name" column from the "height" column. However, to align the columns correctly, a tab is commonly used. These delimiters are vital for ensuring that the data in each column is correctly aligned and understood when the file is processed by different software programs.
Within a .txt file containing structured data, known as a flat file, whitespace characters play a significant role in formatting and organizing data. For example, in Linux, tabs are represented as \t and line breaks as \n. These whitespace characters, which include spaces, tabs, and newlines, form the basis of separating data into readable formats for processing.
What is the system of phonographic disc recordings paired with a projector called?
A. cinematographe
B. kaleidoscope
C. kinetoscope
D. vitaphone
Final answer:
The D. Vitaphone is the correct answer, as it merged phonographic sound recordings with motion picture technology, playing a pivotal role in the development of talking films.
Explanation:
The system of phonographic disc recordings paired with a projector is called the Vitaphone. This technology became a significant milestone in the merge of visual and auditory entertainment, giving rise to the early forms of sound films. Although originally designed as a novelty, the phonograph became primarily an entertainment device.
Thomas Edison's interest in motion pictures led him to develop devices like the kinetograph and the kinetoscope, paving the way to the modern film industry. The Vitaphone was a later development that effectively synchronized sound with film, enhancing the storytelling capacity of motion pictures and contributing to the emergence of movie stars in the twentieth century. Hence, the correct answer to the student's question is D. Vitaphone.
You are helping your friend troubleshoot a problem with his Linux server. You enter a common Linux command and discover it doesn’t work exactly as you expected. What might be the problem and what do you do next?
Answer:
The syntaxis of the command.
Depending on which command you are trying to execute (there are a lot of commands), if you are getting an error or your command doesn't give you the results you expected, there might be something wrong with the syntaxis of your command, like:
Missing part of the command.Incorrect values in the command.Incorrect symbols in the command.Spaces or punctuation marks.Larry is responsible for NIDS/NIPS in his company and has configured a new NIPS solution. What part of this device collects data?
Answer:
Sensor collects data of this device
Explanation:
A network intrusion protection system (NIPS) includes hardware and software systems that protect computer networks and prevent unauthorized access and malicious events.
NIPS hardware consists of a Network Intrusion Detection System (NIDS) which detects malicious activities, denial of service attacks on a computer or network by monitoring network traffic and detecting suspicious patterns in data packets. Three basic component of this system are sensor, control unit, and annunciator. This intrusion detection system collect data using sensor.
NIDS consists of sensors, which passively inspect network traffic for malicious activity. A sensor is a software and hardware device. A sensor can work as a Network Terminal Access Point (TAP) or a firewall log. It collects information about network. Sensor can be used to make decisions about your network’s security. Data collected from multiple sensors make information and traffic monitoring efficient as it generate different types of data and can be created to perform different functions.
With respect to IT security, a risk can result in either a positive or a negative effect.
A. True
B. False
Answer:
Option A is the correct answer choice for the above question.
Explanation:
IT(Information technology) Security is used to secure Information technology which means to secure the information which is traveling through the internet for communication on the internet. It uses various security tools.
When any security method is developed for the first time then there will be a risk to develop it. Sometimes the result of risk will be positive and sometime it will be negative because--
It is positive when the risk is being solved and the user achieved about the security which he is trying to develop.It is negative when the security designer did not achieve the right result for that research.The above question also states the same which is described above hence true is the right answer for the above question.
To reduce costs and the environmental impact of commuting, your company decides to close a number of offices and to provide support for staff to work from home. However, the senior management who introduce the policy are unaware that software is developed using Scrum.
Explain how you could use technology to support Scrum in a distributed environment to make this possible.
What problems are you likely to encounter using this approach?
Answer:
Using services such as GitHub and Skype
Disorganization and Communication Problems
Explanation:
Scrum is a framework for projects that are almost exclusively about programming and coding. Which means that there is always group work involved and one of the most important elements of group work is efficient communication.
The company's decision of providing the employees the opportunity to work from their homes greatly interferes with this concept and most likely there will be issues.
Using Scrum in the development process while working from different locations forces the team to use different ways to communicate and collaborate effectively which i believe can be done by using services such as Skype and GitHub.
Using this approach does not eliminate all possibility of problems mentioned above. There can be miscommunication and desynchronization in terms of the coding process which can result in bugs in the code and delay of the final product.
I hope this answer helps.
Your company has a wireless network for its small office network. The wireless network does not broadcast its service set identifier (SSID). You configure a user's Windows Vista computer to connect to the wireless network by manually setting the SSID. You need to ensure that the user's computer does not send probe requests to discover if the wireless network is in range. What should you do?
Answer:
make sure that the "Connect even if the network is not broadcasting" is cleared
Explanation:
Based on the information provided within the question it can be said that in order to ensure this you should make sure that the "Connect even if the network is not broadcasting" is cleared. Otherwise this option will send probe requests in order to discover if a non-broadcasting network is in range. Therefore by clearing this option no probe requests will be sent.
You are a desktop administrator for Nutex Corporation. A user reports that he is unable to access network resources. You notice a break in the network cable.You need to create a new network cable to connect the computer to the RJ-45 jack in the wall. What should you use to connect the end of the cable to an RJ-45 connector?
Answer:
The right answer is wire crimper tool.
Explanation:
According to the scenario, the most appropriate answer is the wire crimping tool because the wire crimping tool is a tool that can strip the wire then cut it in proper shape and then crimp the wire in the RJ45 connector very effectively.
RJ45 connector is a connector which is used in ethernet cables to connect to computers i.e. cat 5, cat 5e, cat 6, etc. these cable has 4 pairs of different color codes.
A wire crimper effectively connects the end of the cable to an RJ45 connector.
You are on a roller coaster and enter a loop, traveling on the inside of the loop. You pull positive Gs. What provides the centripetal force to make you move in a circle?
Answer:
While traveling on the inside of the loop, you will pull positive Gs and acceleration provides the centripetal force that pushes you against your roller coaster seat.
Explanation:
Due to acceleration, centripetal force keep roller coasters on their tracks and people in their seats. Centripetal force points to the inside of the loop and the car needs to travel fast in order to apply enough centripetal acceleration the roller coaster entering the loop.
When the cars are on the track, gravity pulls downward at a constant magnitude, but as it speeds up almost at the top of the loop, it and the track add together with the centripetal force.
Select the proprietary wireless network technology that is used primarily by sensors for communicating data.
Answer:
ANT(Adaptive Network Topology) is the correct answer.
Explanation:
Because the Adaptive Network Topology is the technology of the wireless network that is mainly used for the sensors for the communicating of the data through the network and it is also used for the radio services in the mobile devices for the BlueTooth connectivity and the other services. So, that's why the following answer is correct.
Answer:
Managing large amounts of data and processing them quickly during communication between Earth and space is challenging.
Which technology is most suitable to overcome this challenge?
Using camera imaging and wireless communication
Which describes the safest way to sit at a desk while typing on the computer?
A. Keep the knees and hips at 90-degree angles and the wrists straight.
B. Elevate the knees, keep the hips at a 90-degree angle, and keep the shoulders back
C. Keep the monitor above the eyes and the keyboard slightly raised
D. Keep the monitor at eye level and the keyboard slightly raised.
Final answer:
The safest way to sit at a desk while typing is to keep the knees and hips at 90-degree angles and the wrists straight, as this aligns the center of gravity above the hips, promoting good posture and reducing the risk of back strain and muscle strain.
Explanation:
The safest way to sit at a desk while typing on the computer is described in option A: Keep the knees and hips at 90-degree angles and the wrists straight. This position aligns the person's center of gravity above the pivot point in the hips, which is ideal for maintaining good posture and avoiding back strain and damage to the disks.
It is essential to ensure that the monitor is at eye level to avoid neck strain, and the keyboard should be positioned in such a way that the wrists remain straight to prevent muscle strain. Special ergonomic chairs can assist in achieving this posture by making it easier to position the body's center of gravity correctly.
Analyze the following code. Is count < 100 always true, always false, or sometimes true or sometimes false at Point A, Point B, and Point C?
int count = 0;
while (count < 100) {
// Point A
System.out.println("Welcome to Java!");
count++;
// Point B
}
// Point C
Answer:
Point A: Always True
Point B: Sometimes false
Point C: Always False
Explanation:
In the given code snippet. Point A is the first statement within the While loop the statement System.out.println("Welcome to Java!"); will only be executed if the while condition evaluates to true.
At Point B, The statement count++ increases the value of the counter at every iteration, while it will be true for most occasions, at the last increament, this statement will be false that is at count=100, The condition will be false at this point just before program execution breaks out of the loop
Point C is outside of the loop, this happens when the given condition is no longer true.
Final answer:
At Point A and B inside the while loop, 'count < 100' is sometimes true and sometimes false. However, at Point C, after the loop, it is always false because the loop halts when 'count' is no longer less than 100.
Explanation:
The code provided demonstrates a basic loop that uses a counter to control its execution. We'll analyze the condition count < 100 at three different points in the loop. Here's what happens at each point:
Point A: This is inside the while loop, just before the welcome message is printed. When the loop starts, count is initialized to 0, which is less than 100, so the condition count < 100 is true. As the loop continues executing, this condition is true until count reaches 99. Once count is incremented to 100, the loop ends, so at Point A, count < 100 is sometimes true and sometimes false, but it is always true whenever Point A is reached because if it weren't, the loop would not run.Point B: This point is just after the count variable is incremented. Here, count < 100 is sometimes true and sometimes false as well. When the count is incremented from 99 to 100, the condition will become false and the loop will stop executing afterward.Point C: This is after the loop has finished executing. At this point, the count < 100 condition is always false, because it's the condition for the loop to stop running. Hence, the loop only exits when count is not less than 100.When reading data across the network (i.e. from a URL) in Python 3, what string method must be used to convert it to the internal format used by strings?
Answer:
decode( )
Explanation:
We can use the method decode( ) to decode the string using the codec registered for encoding.
There are two parameters
encoding: We can encode with this parameter.
errors: If used to manage the errors.
For example:
String = "this is string example....wow!!!";
String = Str.encode('base64','strict');
If we print these variables we have:
String = b'dGhpcyBpcyBzdHJpbmcgZXhhbXBsZS4uLi53b3chISE='
String = this is string example....wow!!!
John works as a sales representative with Northwind Traders. He has to make a presentation to his customers in another town. The presentation occupies 10 gigabytes (GB) on his computer. He wants to make some final changes to this presentation while he is traveling.
Which of the following types of computers will help John carry this data with him?
A. Mainframe
B. Personal digital assistant (PDA)
C. Laptop
D. Desktop computer
Answer:
C
Explanation:
A laptop is a computer you can carry around because it is portable and at the same time has enough gigabytes for John to store 10 gigabytes of information. It can also be transported around without feeling like you are carrying a large box around. He can also edit his work, making some final changes to his presentation while he is travelling.
Answer:
c
Explanation: laptops are portable and usually light so their easy to transport as john being able to acess the data easily.
int puzzle(int start, int end) { if (start > end) return start - end; else if (start == end) return start + end; else return end * puzzle(start + 1, end - 1); } Consider the accompanying definition of a recursive function. What is the output of the following statement? cout << puzzle(3, 7) << endl; a. 10 b. 21 c. 42 d. 420
Answer:
d. 420
Explanation:
Write a program that produces the following output (where the user may enter any positive integer under 10):______
Enter a positive integer under 10:_________
Answer:
// The Scanner class is imported to allow the program receive user input
import java.util.Scanner;
// The class is defined called Solution
public class Solution {
// The main method is defined which begin program execution
public static void main(String args[]) {
// Scanner object 'scan' which receive user input from the keyboard
Scanner scan = new Scanner(System.in);
// the userInput variable is initially set to 1 (true) to allow the program continue prompting the user for input
int userInput = 1;
// while loop which continue execution as long as the userInput is greater than 0 and less than 10
while (userInput > 0 && userInput < 10){
// Prompts is displayed to the user to enter number below 10
System.out.println("Enter a positive integer under 10:__________");
// the next input is assigned to userInput
userInput = scan.nextInt();
}
}
}
Explanation:
The above code continue prompting the user to input an integer as long as the input is greater than 0 and less than 10.
Final answer:
The provided program, written in Python, prompts the user to enter a positive integer under 10 and prints it out if it's within the valid range, otherwise it notifies the user of the incorrect input.
Explanation:
The question is asking for a simple program that prompts the user to enter a positive integer less than 10 and prints out a specific output. We can use a programming language like Python to achieve this. Below is an example of what the program might look like:
positive_integer = int(input("Enter a positive integer under 10: "))
if positive_integer > 0 and positive_integer < 10:
print("The number you entered is:", positive_integer)
else:
print("The number is not within the specified range.")
The program first asks the user to enter a positive integer. It then checks if the number is greater than 0 and less than 10 before printing it out. If the number is not within the valid range, it informs the user accordingly.
Kevin manages the security for his company and is working to implement a kernel integrity subsystem for key servers. Of the following list, what is the primary benefit of this?
Answer:
The primary benefit is to detect the file whether the file have been changed or altered.
Explanation:
The following answer is correct because the person who manages the companies security and he is also doing job to implement the key server of the kernel integrity system then, the primary benefit of the following list is to detect the following files whether the files will be changed or altered. so, that's why the following answer is correct.
A crossover cable would normally be used in a 100BaseT network to connect __________.
Answer:
The answer is "directly computing device"
Explanation:
The Ethernet crossover cable used to connect computers directly. Two computers are used in the same form in this method and are mostly related.
The system is connected to two or more switches, and a mini LAN connected to one LAN or two separate hosts. It allows the connection to two hosts or a server to a customer without having a hub.Final answer:
A crossover cable is used in a 100BaseT network to directly connect two similar devices, such as computers, or networking equipment like switches and routers. This cable type crosses transmit and receive lines to enable direct communication, employing twisted pair wiring to minimize crosstalk and interference.
Explanation:
A crossover cable is typically used in a 100BaseT network to connect two similar devices directly to each other without the need for a switch or hub. This type of cable is useful for linking two computers together to form a small network or for connecting switches and routers without uplink ports. The wires within a crossover cable are crossed so that the transmitting signals on one end of the cable line up with the receiving signals on the other end, enabling two devices to communicate directly. Connections utilizing a crossover cable are critical in networks that operate at frequencies up to a few hundred kHz, and they also apply to systems such as Ethernet which can operate near 1 GHz. The use of twisted pair cables, like those in crossover cables, help to reduce crosstalk and other electromagnetic interference which would otherwise be problematic in both power and data transmission.
Two technicians are discussing MAP sensors. Technician A says that the MAP sensor should be replaced if anything comes out of the sensor when the vacuum hose is removed from the sensor. Technician B says that the injector pulse width should increase when vacuum to the MAP sensor is increased. Who is right?
Answer:
Both are correct.
Explanation:
Both technicians are correct in this scenario. Technician A point of view is correct as well as technician B.
A company purchased a high-quality color laser printer to print color brochures and sales proposals. The printer is connected to a marketing PC via USB and is configured as a shared local printer for use by the sales and marketing teams. The manager is concerned about the cost of consumables for the printer and does not want users to unintentionally print to the printer.What can be done to ensure that only authorized users can send print jobs to the printer?a. Enable user authentication on the printer share. b. Disable print spooling on the marketing PC. c. Set security permissions for the marketing PC's signed-in user. d. Disable the local share on the marketing PC.
Answer:
a. Enable user authentication on the printer share.
Explanation:
a. Enable user authentication on the printer share.
-The manager only wants specific people to access print so can only give access to these people by enabling user authentication.
b. Disable print spooling on the marketing.
-In that condition no one can print so this will be not useful.
c. Set security permissions for the marketing PC's signed-in user.
- Security permissions are about the PC itself not about the access to PC. Well again anyone can access to a printer.
d. Disable the local share on the marketing PC
- If the local share is disabled then only one computer can print. No one can print from marketing teams.
The best answer is A. Enable user authentication on the printer share
This would be the safest precaution that the manager could execute to prevent unauthorized user to gain access on the marketing printer. User authentication can happen by assigning password on the network printer before they could use it. The only risk it has is for the printer password not to get known by other users.
If you choose letter B, you cannot spool or queue several printing jobs at the time. Which is inconvenient if you are in the marketing team and you want to print several documents by sending multiple printing jobs. If you choose letter C, you can restrict the whole computer. This is also okay, but what if you wanted to use the computer and doesn't print?
To assign a password on a network printer, you can click and navigate to Printer Settings > Assign a password > Confirm the password.
Where should the Analytics tracking code be placed in the HTML of a webpage for data collection?
Answer:
Just before the closing </head> tag
Explanation:
The Analytics tracking code is usually a small pieces of JavaScript snippet install on a page of a website (just before the closing </head>tag) but runs in the viewer's browser. it is responsible for tracking and collection of all of the users data when they visit the pages.
If improvements in technology have reduced the cost of producing personal computers, you accurately predict that in the market for personal computers, there will be a(n)___________.
Answer:
If the cost of producing personal computers reduced while the improvement in the technologies, then there will be:
The supply of personal computers increased.Price of the computers will decrease.Increase in the demand of the quantity.Above are the points which will happen when you predict exactly for the personal computers in the market.
You are tasked with securing a small network for a client in which the following requirements must be met:
a. If a user on the private network attempts to send confidential company information to an unauthorized entity, an alert should be triggered.
b. The private trusted network should not be accessible from the public untrusted network.
c. Of attacks are coming from the external network, the system should detect and prevent malicious activity.
d. All incoming and outgoing email should be scanned for malware.
While tasked with securing a small network for a client in which the following requirements must be met: All incoming and outgoing email should be scanned for malware.
d. All incoming and outgoing email should be scanned for malware.
Explanation:
Since network administrator assigned a task to scan the mail for every users. Network administrator has to installed local mail server such as lotus dominos or any other third part tools. So which will scanned the documents, excel sheet or any files and generated a logs.
Through third party software network administrator allows user to receive or send documents or excel sheet or any other files. Moreover other user can be control only receive the documents or sheet or any other files.
So that organization is protected, by not sharing g files outside the networks. Moreover each email is scanned for malware check and generated the report so that network administrator can do analysis and give report to management.
Answer:
Implement a UTM appliance.
Explanation:
A UTM appliance will usually include functions such as: antivirus, anti-spyware, anti-spam, network firewalling, intrusion detection and prevention, content filtering and leak prevention
In the Create Performance Task, you will be asked to identify an abstraction in your program and explain how it helps manage the complexity of the program. Functions are a form of abstraction. Pick a function you wrote in your solution to the 3x3 square problem and explain how it helps manage the complexity of your program.
Answer:
The selecting function to this question is:
turnRight();
longLine();
Explanation:
In the given question we select two function that are "turnRight() and longLine() ". turnRight() function would originally have 3 lefts and longLine() would be originally 3 forward, used a lot in the 3x3 grid. These function helps to control the complexity of the program because These functions have a graphical layout which has many phases to be replicated over and over. Functions reduced ambiguity and increased performance.Abstraction, such as functions, helps manage the complexity of a program by hiding details of certain parts of code and making the program's overall structure easier to understand. An example is using a function to calculate the area of mini-squares in a 3x3 square problem.
Explanation:In the context of the Create Performance Task, an abstraction is a way of managing the complexity of a program. It allows you to hide the implementation details of a part of your code, thus reducing complexity. A function is a common form of abstraction. For instance, in solving a 3x3 square problem, a function might be used to calculate the area of each mini-square. This function does a specific job and you don't have to worry about the details of how it calculates the area each time you use it.
This use of a function, an abstraction, allows the main part of your program to remain cleaner, more straightforward and less complex, making it easier to grasp the overall structure of the program. Abstraction, thus, helps in simplifying a program and managing its complexity.
Learn more about Abstraction in Programming here:https://brainly.com/question/36545539
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What should food service operators do to prevent customer illness from salmonella?
Answer:
Maintain clean and health standards
Explanation:
Salmonella is a bacteria infection also known as food poisoning, because it is ingested or contracted through contaminated food and water.
Food service operators should;
Keep their environment clean, including the kitchen and utensils.
Refrigerate their Stokes properly.
Treat the water meant for their services.
Monitor employees health and treat if necessary etc.
Wi-Fi networks operate in basically the same way as cellular telephony networks that are designed, installed, and maintained by the wireless telephone carriers.
A) True
B) False
Answer: B) False
Explanation:
Wi-Fi network works by using radio signals to share or transfer data between devices, Wi-Fi networks are not designed,installed and maintained by wireless telephone carriers are parts of the features of modern telephones, computer etc installed by the telephone,Computer etc manufacturers.
Wi-Fi is a trademarked term meaning IEEE 802.11x,it is also a short range wireless connection to a wireline broadband connection.