Wireless telephony, the transmission of a voice rather than a signal, like Morse code, was developed by Alexander Graham Bell.
Who was responsible for the development of wireless telephony?Alexander Graham Bell is credited with the development of wireless telephony, a groundbreaking technology that enabled the transmission of voice signals without the need for physical wires. In the late 19th century, Bell, a Scottish-born inventor and scientist, made significant contributions to the field of telecommunications.
While he is best known for inventing the telephone, Bell also delved into wireless communication methods. Through his experiments and innovations, he paved the way for wireless telephony, allowing people to communicate vocally across distances without the use of cables or wires.
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characteristics and purpose of a motherboard
Complete the following sentences by choosing the best answer from the drop-down menus.
A computer system is made of two main parts:
and
Examples of
memory
include the central processing unit and random access
The term software refers to
v that direct hardware what to do.
Examples of
include multimedia and presentation applications.
Productivity programs are an example of
the answers are:
- hardware and software
- hardware
- applications
- software
- software
what elements of the user stories were the most helpful in developing your initial test cases?
The most helpful elements of user stories in developing initial test cases are: the clear description of the user's goal, the defined roles and actions, and the specific acceptance criteria.
When developing test cases from user stories, it is important to consider the following elements:
1. User persona: User personas provide a better understanding of the user's needs, goals, and behavior. This information is used to develop relevant test cases.
2. User story title: The title of the user story is used to create a test case name.
3. Acceptance criteria: Acceptance criteria provide details on the expected outcome or behavior of the application.
4. Assumptions: Assumptions provide insight into the expected user behavior and are helpful in developing test cases.
5. Business value: Business value helps to prioritize which test cases should be executed first.
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Find out how to print the below pattern in python and also come up with pseudocode,
you have to use for loop for this, you can use a for loop inside the outer for loop.
You can't use operator like " *" in python , only use print statement to print the below pattern. Find out how to print in 5 lines one by one in python , there is a way to print one line then next
X
XXX
XXXXX
XXXXXXX
XXXXXXXXX
Answer:
for i in range(5):
for j in range(2*i + 1):
print("*", end="")
print()
Explanation:
for row index going from 0 to 5
for column index going from 0 to 2*row index + 1
print * suppressing new line
print a new line to move to next row
Which of the following are advantages of coding manually? Check all of the boxes that apply.
You can see what rendered code looks like as you type.
You can view source code to figure out HTML structure and behavior.
You can learn how HTML works.
You do not need a lot of HTML knowledge to create complex web pages.
Answer: Answer B
Explanation: My point of view this answer is correct because when we write any code then we have observed the lines of code to check whether they meet the conditions or not
A man receives a fraudulent email from his bank asking him to confirm his user name and password by going to a particular website. What has occurred
Answer: The man's info has been found and a hacker was trying to make him confirm his passwrd so he can get a hold of it to hack the man further.
Explanation:
True or False A safety data sheet (SDS) is a technical document or bulletin that summarizes the health and safety information available about a controlled product.
Answer:
True.
Explanation:
The Occupational Safety and Health Administration (OSHA) is a federal agency saddled with the responsibility of assuring and ensuring safe and healthy working conditions for employees by setting and enforcing standards, providing education, trainings and assistance to various organizations.
According to the Occupational Safety and Health Administration (OSHA), trainings on the adoption and application of safety precautions (tools) such as wearing a personal protective equipment e.g masks (respirators), ear plugs, safety boots, gloves, helmet, etc. are very important and are essentially to be used by employees (workers) while working in a hazard prone environment or industries. Therefore, all employers of labor are required to provide work tools and ensure that their employees properly use those tools, as well as abide by other safety precautions and standards highlighted in the safety data sheet.
A Safety Data Sheet (SDS) can be defined as a text-based document or bulletin that provides information with respect to the chemical and physical properties such as flammability, temperature, radioactivity, etc., of a substance or equipment. Also, it contains information on the potential health hazards and safety precautions for proper use (handling), storage and transportation of such substance or equipment.
Hence, a safety data sheet (SDS) is a technical document or bulletin that summarizes the health and safety information available about a controlled product such as toxic chemicals, radioactive elements, weapons or ammunition, etc.
(Aloha Protocol) N users share a telecommunications channel in a given region. When, say user u, has a message for user v, he/she sends it to the satellite which retransmits it to the whole region so that all N users receive it. It may happen that more than one user is trying to transmit messages at a given time period. In this case, users get a garbled message. Assuming - Users send packets of information in time slots of equal length (n=0,1,2,…) - If a user started transmitting a packet at time n, the reception would be completed at time n+1 and every user would know if it was successful (i.e, no garbling) - If garbling occurs, each transmitting user independently decides in each subsequent time slot to attempt retransmission with probability q until success. - At time n, each user has a packet to send with probability p. - Show that the collection of random variables {X n
:n≥0}, where X n
is the number of "backlogged" users (i.e. the users who are trying to retransmit a package) at the beginning of time period n, is a Markov chain by constructing the one-step transition probability matrix.
The collection of random variables {Xn: n≥0}, representing the number of backlogged users at the beginning of each time period, forms a Markov chain. This can be shown through the construction of a one-step transition probability matrix.
Let's consider a time period n. At the beginning of this period, the number of backlogged users, Xn, can take on values ranging from 0 to N, where N is the total number of users.The probability of transitioning from Xn to Xn+1, i.e., from having Xn backlogged users to Xn+1 backlogged users, depends on the actions of the transmitting users during this time period.For each transmitting user, there are three possible scenarios:
1. The user successfully transmits the packet without garbling, resulting in one less backlogged user (Xn+1 = Xn - 1).
2. The user's transmission is garbled, and they decide to retransmit with probability q. In this case, the number of backlogged users remains the same (Xn+1 = Xn).
3. The user's transmission is garbled, but they decide not to retransmit with probability (1 - q). This means that the number of backlogged users decreases by one (Xn+1 = Xn - 1).
The one-step transition probability matrix can be constructed as follows:
Let P(i, j) denote the probability of transitioning from state i (Xn = i) to state j (Xn+1 = j).For each possible value of i (0 ≤ i ≤ N):P(i, i - 1) = p(1 - q)^i, representing the probability of i users transmitting and all of them successfully completing their transmissions.P(i, i) = p(1 - q)^i + (1 - p)q^i, accounting for the cases where some transmissions are garbled but users may or may not decide to retransmit.P(i, i + 1) = (1 - p)q^i, representing the probability of i users transmitting, all their transmissions getting garbled, and all of them deciding to retransmit.By constructing the one-step transition probability matrix using the defined probabilities, we have shown that the collection of random variables {Xn: n≥0} forms a Markov chain. This Markov chain can be used to analyze the behavior of backlogged users in the Aloha Protocol telecommunications system.
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Write a class named Pet, which should have the following data attributes:
• _ _name (for the name of a pet)
• _ _animal_type (for the type of animal that a pet is. Example values are ‘Dog’, ‘Cat’,
and ‘Bird’)
• _ _age (for the pet’s age)
The Pet class should have an _ _init_ _ method that creates these attributes. It should also
have the following methods:
• set_name
This method assigns a value to the _ _name field.
• set_animal_type
This method assigns a value to the _ _animal_type field.
• set_age
This method assigns a value to the _ _age field.
• get_name
This method returns the value of the _ _ name field.
• get_animal_type
This method returns the value of the _ _animal_type field.
• get_age
This method returns the value of the _ _age field.
Once you have written the class, write a program that creates an object of the class and prompts the user to enter the name, type, and age of his or her pet. This data should be stored as the object’s attributes. Use the object’s accessor methods to retrieve the pet’s name,
type, and age and display this data on the screen.
The class name in this question is Pet. It has three attributes, namely, __name (for the name of a pet), __animal_type (for the type of animal that a pet is), and __age (for the pet's age).
To create an object of the Pet class, we need to first initialize the class attributes using the __init__ method. This method will take three parameters, which correspond to the three attributes.
After initializing the class, we need to create six methods to assign values to the attributes and retrieve the values from the attributes. These methods are set_name, set_animal_type, set_age, get_name, get_animal_type, and get_age.
To create an object of the Pet class, we can use the following code:
pet = Pet()
pet.set_name(input("Enter pet's name: "))
pet.set_animal_type(input("Enter pet's animal type: "))
pet.set_age(input("Enter pet's age: "))
print("Pet's name:", pet.get_name())
print("Pet's animal type:", pet.get_animal_type())
print("Pet's age:", pet.get_age())
This code creates an object of the Pet class and prompts the user to enter the pet's name, type, and age. It then stores this data as the object's attributes using the set methods. Finally, it retrieves the data using the get methods and displays it on the screen.
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which section of the tcp/ip five-layer network model contains the data the application wants to send?
Transport Layer of the tcp/ip five-layer network model contains the data the application wants to send.
In computer networking, the transport layer is a theoretical division of techniques in the layered architecture of protocols in the network stack, as defined by the OSI model and the Internet protocol suite. Applications can communicate with one another from beginning to end thanks to the protocols of this layer. Additionally, it offers multiplexing, flow control, reliability, and connection-oriented communication services.
The OSI model of general networking and the implementation details and semantics of the transport layer of the Internet protocol suite, which serves as the backbone of the Internet, are distinct. The development of TCP/IP is where all of the protocols used in this layer of the Internet today had their beginnings. While numbered layers are not used in TCP/IP, the transport layer is frequently referred to as Layer 4 in the OSI model.
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When you connect several home devices using a wireless router, what network topology are you using? A. bus B. mesh C. star D. ring
Answer:
Star Topology
Explanation:
Because the definition of Star Topoplogy is: In star topology each device in the network is connected to a central device called hub. Unlike Mesh topology, star topology doesn’t allow direct communication between devices, a device must have to communicate through hub. If one device wants to send data to other device, it has to first send the data to hub and then the hub transmit that data to the designated device.
what should be chosen as x in the given series of clicks to calculate formulas automatically except for data tables: file < options < x < automatic?
In order to calculate formulas automatically in Excel except for data tables, "Workbook Calculation" should be chosen as x in the given series of clicks.
What is "Workbook Calculation"?The mode in which Excel formulas are recalculated, whether manually or automatically. Iteration is the number of times a formula is recalculated until a particular numerical condition is met.
The steps to select "Workbook Calculation" are:
Click on the "File" tab in the ribbon.Click on "Options" in the menu on the left-hand side.In the Excel Options dialog box, click on "Formulas" in the menu on the left-hand side.Under "Calculation options", select "Workbook Calculation" from the drop-down menu next to "Calculation options".Click "OK" to save the changes.Thus, by selecting "Workbook Calculation" as the calculation option, Excel will automatically recalculate formulas whenever a change is made to the worksheet.
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An Introduction to Programming with C++ by Diane Zak
Exercise 26:
If necessary, create a new project named Advanced26 Project and save it in the Cpp8\Chap11 folder. Also create a new source file named Advanced26.cpp. Declare
a 12-element int array named days. Assign the number of days in each month to
the array, using 28 for February. Code the program so that it displays the number of
days corresponding to the month number entered by the user. For example, when the user enters the number 7, the program should display the number 31. However, if the user enters the number 2, the program should ask the user for the year. The rules for determining whether a year is a leap year are shown in Figure 11-51. If the year is a leap year, the program will need to add 1 to the number of days before displaying the number of days on the screen. The program should also display an appropriate message when the user enters an invalid month number. Use a sentinel value to end the program. Save and then run the program. Test the program using the number 1, and then test it using the numbers 3 through 12. Test it using the number 2 and the year 2015. Then, test it using the number 2 and the year 2016. Also test it using an invalid number, such as 20.
Advanced26.cpp program which displays the number of days corresponding to the month number entered by the user along with the explanation of the code is given below:#include using namespace std;int main() { int month, year, days[12] = { 31,28,31,30,31,30,31,31,30,31,30,31 };
cout << "Enter the month number : "; cin >> month; if (month < 1 || month > 12) { cout << "Invalid month number!"; return 0; } if (month == 2) { cout << "Enter the year : "; cin >> year; if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) days[month - 1] = 29; } cout << "Number of days in " << month << " month is " << days[month - 1] << endl; return 0;}Firstly, the program prompts the user to enter the month number. Then, the program checks whether the entered number is between 1 and 12 or not. If it is not between 1 and 12, it displays an error message "Invalid month number!" and the program terminates. If the entered number is between 1 and 12, the program checks if it is equal to 2.
If the entered number is equal to 2, then the program prompts the user to enter the year. Then, the program checks whether the entered year is a leap year or not. If it is a leap year, then the number of days in the month of February is 29 otherwise it is 28. If the entered month number is not equal to 2, then the program displays the number of days in the corresponding month of the entered month number on the screen along with the message "Number of days in <
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Please please please help I beg I'll give brainiest. :(
A digital egg timer uses an input, process and output. (a) Suggest an appropriate input component. (b) Suggest an appropriate output component (c) Circle the most appropriate device below to be used for the timing process. Monostable or Astable
Answer:
A) toggle switch B) Push to Make switch C) Monostable
Explanation:
toggle because it needs to go off when the timer ends and not when u press a button
Push to make because you turn the timer off manually
Monostable because it needs to go off once not repeatedly
Why do
ve need to add movies in our slide?
Answer:
movies are awesome! LOL but i dont understand your question...sadly.
Explanation:
dark red colored blood would be found in the ________, traveling to the ________. group of answer choices arteries; heart veins; heart heart; veins capillaries; arteries
Dark red colored blood would be found in the veins, traveling to the heart.
What are veins?Veins are a type of blood vessel that carries deoxygenated blood from the various body regions to the heart. They are one of three types of blood vessels, the other two being arteries and capillaries.
They're also known as venules (small veins) or venous vessels. Because veins transport deoxygenated blood and are further from the heart, they have thinner walls and a less muscular lining than arteries. Veins have one-way valves that prevent backflow, allowing blood to flow only toward the heart.
The veins are also responsible for returning waste products to the heart so that they can be eliminated from the body. Dark red colored blood would be found in the veins, traveling to the heart.
Therefore, the correct option is veins; heart.
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Checking a website author’s credentials is one way to establish a site’s _________. Group of answer choices security information literacy credibility copyright
Answer:
The answer is "Credibility".
Explanation:
By assessing the excellently-intended, factual, or unbiased" a Site is, users, assess reliability. It can be achieved by developers, which provides a useful set of information sections, and responses to the links for external sources or resources must be provided. The credibility of its website is mostly about making the site accurate and accurate. Only 52.8% of internet users agree that digital information is consistent, and the incorrect choice can be defined as follows:
Information on security is used in designing, that's why it's wrong.literacy is used in understanding, that's why it's incorrect.copyright refers to the legal right, that's why it's incorrect.One way to remove an existing sketch entity is to select it and then press the __________ key on the keyboard.
One way to remove an existing sketch entity is to select it and then press the delete key on the keyboard.
Do all keyboards have a delete key?The desktop computer is known to have keyboards and there are found to be two delete keys that can be seen on the keyboard.
Note that the delete key is seen as the key on a lot of computer keyboards that is said to be used to delete a given character.
Therefore, One way to remove an existing sketch entity is to select it and then press the delete key on the keyboard.
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For the situation below, determine whether the premium will likely increase, decrease, or remain the same.
Kamiah passes a driver’s education course.
Answer:
decrease
Explanation:
Pleaseee Help!!!!
What industry holds a significant place in the commercial phere of economies all over the world due to factors such as the growing variety of game hardware and peripheral devices, emerging markets, and increasingly diversified demographics?
A)The Medical software industry
B)The video game industry
C)The graphic artistry industry
D)The international travel industry
how does human readable document work
Human readable basically means that if the content is displayed by a program that lacks direct, specific awareness of that file's format, that there's at least a reasonable chance that a person can read and understand at least some of it
For example, if a is a string, then print(type(a))
will print -class iste'
What is output by the following code?
print(type("67"))
print (type(67))
print (type("sixty-seven"))
Answer:
<class 'str'>
<class 'int'>
<class 'str'>
Explanation:
The input
print(type("67"))
will give you the output
<class 'str'>
and the input
print (type(67))
will give you the output
<class 'int'>
and the input
print (type("sixty-seven"))
will give the the output
<class 'str'>
First input give you the output
<class 'str'>
because, the number 67 is an integer but, it is written in the quotes, and the third input give you the output
<class 'str'>
because, it is already a string and also written in quotes. And the second input give you the output
<class 'int'>
because, it is an integer and also written without quotes.
What specific type of dns attack uses public dns servers to overwhelm a target with dns responses by sending dns queries with spoofed ip addresses ?
A DNS amplification attack is the specific type of DNS attack that uses public DNS servers to overwhelm a target by sending DNS queries with spoofed IP addresses. This attack technique exploits the amplification effect of certain DNS queries, causing a high volume of traffic to be directed towards the target's IP address.
The specific type of DNS attack that uses public DNS servers to overwhelm a target with DNS responses by sending DNS queries with spoofed IP addresses is called a DNS amplification attack. In this attack, the attacker sends a large number of DNS queries to the public DNS servers, but they manipulate the source IP addresses in these queries to appear as the IP address of the target. This causes the DNS servers to send their responses to the target's IP address, overwhelming it with an excessive amount of DNS traffic. DNS amplification attacks are effective because they exploit the large response size of certain DNS queries, such as DNS recursive lookups. By amplifying the amount of traffic directed at the target, the attacker can cause a significant impact on the target's network or servers. This type of attack is also challenging to mitigate because it relies on abusing legitimate DNS infrastructure.
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Did anyone do 5. 7. 5 Factorial on Code HS??
20 POINTS
The 5. 7. 5 Factorial on Code HS is shown below:
function myFunction(num){
n = 0;
total = 1;
while (n < num){
total *= (num - n);
n+=1;
}
eturn total;
}
alert(myFunction(6));
What is a programming language?A method of notation for creating computer programs is known as a programming language. The majority of formal programming languages are text-based, though they can also be graphical.
In this exercise we applied the use the knowledge of computational language in JAVA to describe the code shown above.
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Why should we not underestimate the widespread of mass media?
Select one:
a.
While we do not seem to be aware of it, media has always been a useful and influential part of our lives.
b.
Media's span of influence knows no bounds
c.
All of the given choices are correct
d.
The media could reach almost anywhere in the world
We should not underestimate the widespread of mass media because C. All of the given choices are correct.
It should be noted that media has always been a useful and influential part of our lives and its span of influence knows no bounds.
Also, it's important for one not to underestimate mass media because media could reach almost anywhere in the world. Therefore, all the options are correct.
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What feature in a relational database management system is similar to an observation in R? a. A row b. A primary key c. A table
d. An attribute
The feature in a relational database management system that is similar to an observation in R is a. A row.
In a relational database management system, a row represents a single record or observation. Similarly, in R, an observation is a single data point or record. Both rows in a relational database and observations in R contain data about specific attributes or variables.
For example, a row in a database may contain data about a person's name, age, and address, while an observation in R may contain data about a person's height, weight, and blood pressure. Both rows and observations are used to store and organize data in a structured way.
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Describe Barry Boehm's conclusions about Agile and plan-driven methods from the Boehm 2002 reading.
____
Barry Boehm's 2002 report examines the conflict between plan-driven methods and agile methods in software development. Boehm claims that both approaches have advantages and disadvantages that are dependent on the type of project being undertaken.
Hybrid model: A hybrid model that combines aspects of both agile and plan-driven models, tailored to fit the specific requirements of the project. Boehm acknowledges that this approach is the most flexible and is appropriate for most projects.
Agile methods for early phases: Utilize agile methods in the project's early phases to ensure a shared understanding of stakeholder needs and better alignment with business goals.
Rapid application development: Utilize agile methods to rapidly prototype a software solution in a plan-driven framework. Boehm notes that this approach is suitable for projects with high process uncertainty and tight time constraints.
Boehm concludes that agile methods and plan-driven methods should be used together. The advantages and disadvantages of each approach will be balanced by employing hybrid models that are tailored to fit the specific requirements of the project. This hybrid approach maximizes the benefits of both models and results in a more efficient and effective software development process.
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PLEASE ANSWER!
The move mouse pointer looks like a ______?
white arrow with a small plus sign
white arrow with black crosshairs
white plus sign
black cross
"Which of the following statements is/are correct? 1) Primary
data could come from questioning or observation; 2) Observational
data is primary data.
Group of answer choices
A. Both 1 and 2
B. Neither 1 nor 2
C. 1
D. 2
Answer:
Explanation:
The correct answer is A. Both 1 and 2.
Both statements 1 and 2 are correct.
1) Primary data can indeed come from questioning or observation. Primary data refers to the original data that is collected firsthand from the source. It can be obtained through methods such as surveys, interviews, or direct observation.
2) Observational data is considered primary data. Observational data is collected through direct observation of phenomena or events without any manipulation or intervention. It is an example of primary data because it is collected firsthand from the observation process.
Therefore, both statements 1 and 2 are correct, and the correct answer is option A. Both 1 and 2.
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If you play video games, please answer these questions it’s for a survey for my game development class!!
Why do you play video games?
What types of games do you play?
How long have you been playing video games?
How do you think video games will be played in the future?
Do you think video games will converge to a single platform in the future?
Answer:
Doom, fortnlte, mlnecraft, ark survival evolved, ark survival of the fittest, terraria, raft, among us, ect.
First person shooters, Third person shooters, Creative games
8-10 years
More VR, better graphics, more realistic
Maybe, not anytime soon.
Explanation: