The reason that the first smartphone is considered a disruptive technology is C. Because it changed how and when we connect to others, allowing constant communication
What is the use of smartphone?The first smartphone was considered a disruptive technology because it revolutionized how people communicate by providing constant connectivity and changing the way people interact with others. It allowed users to make calls, send messages, and access the internet on a single device, which was a significant departure from traditional cell phones that were primarily used for voice calls.
The ability to be constantly connected and communicate in real-time regardless of location or time of day disrupted traditional communication patterns and norms, leading to significant changes in how people connect with others in their personal and professional lives.
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How would you suggest voice commerce technology address the language
barriers experienced in a South African context?
Voice commerce technology could include multilingual support and provide language alternatives for users to switch between multiple languages to solve language obstacles in a South African environment.
What function does voice control serve in e-commerce?Voice commerce is a technique that lessens end users' reliance on hardware by enabling them to search for and buy things online using voice commands.
How may voice commerce be implemented?Repeat ordering is the most popular and effective method of voice commerce implementation. Customers don't want visual confirmation of their purchase in this instance because they already know what they want to buy - it could be something they purchase every month or even every week.
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What can developers build to visualize elements of a webpage?
In the phase, developers build a to describe how different visual elements will look on each web page.
Developers can build various tools and techniques to visualize elements of a webpage.
Some popular options include:CSS frameworks and libraries like Bootstrap or Tailwind CSS, which provide pre-defined styles and components.
Prototyping tools such as Adobe XD, Figma, or Sketch, which allow designers and developers to create interactive visual representations of web pages.
Browser developer tools like Chrome DevTools or Firefox Developer Tools, which enable live editing and previewing of CSS styles, layout, and elements.
Design systems and style guides that provide consistent visual guidelines for web elements.
Custom visualization tools or scripts that generate previews or mockups based on code or design files.
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I really need to help with is
Primary keys, foreign keys, and references are all important concepts in relational database management systems (RDBMS).
How to explain the informationA primary key is a column or set of columns in a table that uniquely identifies each row in that table. It is used to enforce the integrity of the data by ensuring that each row is unique and that it can be referenced by other tables. Primary keys are typically used as the basis for relationships between tables.
A foreign key is a column or set of columns in a table that refers to the primary key of another table. It is used to establish a relationship between two tables, where the foreign key in one table refers to the primary key in another table. This allows you to link related data between tables in a database.
A reference is a term used to describe the relationship between two tables in a database. When one table contains a foreign key that refers to the primary key of another table, we say that the first table has a reference to the second table. The reference allows you to join the two tables together in order to retrieve related data.
In summary, primary keys are used to uniquely identify rows in a table, foreign keys are used to link data between tables, and references describe the relationships between tables in a database.
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what is the first computer?
Answer:
The first computer was called the "Atanasoff-Berry Computer" (ABC), which was developed by John Atanasoff and Clifford Berry in the late 1930s and early 1940s. The ABC was an electronic computer that used binary digits (bits) to perform calculations, and it was designed to solve systems of linear equations. While the ABC was not a general-purpose computer, it represented a major milestone in the development of electronic computing and laid the groundwork for later computer designs.
PLEASE HELP
Read string integer value pairs from input until "Done" is read. For each string read, if the following integer read is less than or equal to 45, output the string followed by ": reorder soon". End each output with a newline.
Ex: If the input is Tumbler 49 Mug 7 Cooker 5 Done, then the output is:
Mug: reorder soon
Cooker: reorder soon
The program to read string integer value pairs from input until "Done" is read. For each string read, if the following integer read is less than or equal to 45, output the string followed by ": reorder soon". End each output with a newline is below.
Here's a Python program that solves the problem for the given input:
while True:
name = input()
if name == "Done":
break
value = int(input())
if value <= 45:
print(name + ": reorder soon")
Thus, this is the program for given scenario.
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PLEASE HELP
Read string integer value pairs from input until "Done" is read. For each string read, if the following integer read is less than or equal to 45, output the string followed by ": reorder soon". End each output with a newline.
Ex: If the input is Tumbler 49 Mug 7 Cooker 5 Done, then the output is:
Mug: reorder soon
Cooker: reorder soon
Answer: while True:
# Read the string integer pair from input
input_str = input().strip()
if input_str == "Done":
break
string, integer = input_str.split()
# Check if the integer is less than or equal to 45
if int(integer) <= 45:
# Output the string with the message
print(string + ": reorder soon")
Explanation:
Attendees who are also board members receive a discount off the registration fees. The discount amount varies based on the type of event. In cell J11 enter a formula that will return the discount amount if the registrant is a board member and return a blank value ("") if they are not.
Use a VLOOKUP function to retrieve the EventType from the EventDetails named range.
Use an INDEX function, with the cell range A5:B8 on the ClientRegistration worksheet as the array and the result of the VLOOKUP as the lookup_value for the MATCH function needed for the row_num argument.
Use an IF function so that the discount only applies to board members and all others will display as a blank ("")
Format the result as Percentage with 0 decimal places.
Copy the formula down through J34.
Initially, the formula verifies whether or not the attendee is a board member using the COUNTIF function.
How to explain the informationThis counts how many times their name appears in the "BoardMembers" named range. If the count exceeds zero, then the VLOOKUP operator within the formula retrieves the EventType of the current attendee from the "EventDetails" named range.
Then, via usage of the MATCH and INDEX functions, the formula identifies the matching row number in the registration worksheet for the retrieved EventType. The identified row number will be positioned as an argument (row_num) for the INDEX formula. As it executes, the INDEX formula can retrieve the relevant discount percentage value from column B.
Finally, by executing multiplication between the extracted discount percentage and 0.1 (as this expresses the respective reduction), the newly achieved outcome -a properly formatted percentage with no decimal points is returned by the original formula.
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Insertion sort in java code. I need a modified code of the code given, output need to print exact. Make sure to give explanation and provide output. My output is printing the wrong comparison. My output is printing a comparisons: 4 and comparsions: 9, What I need is a java code thats output to print a comparisons: 7.
The program has four steps:
Read the size of an integer array, followed by the elements of the array (no duplicates).
Output the array.
Perform an insertion sort on the array.
Output the number of comparisons and swaps performed.
main() performs steps 1 and 2.
Implement step 3 based on the insertion sort algorithm in the book. Modify insertionSort() to:
Count the number of comparisons performed.
Count the number of swaps performed.
Output the array during each iteration of the outside loop.
Complete main() to perform step 4, according to the format shown in the example below.
Hints: In order to count comparisons and swaps, modify the while loop in insertionSort(). Use static variables for comparisons and swaps.
The program provides three helper methods:
// Read and return an array of integers.
// The first integer read is number of integers that follow.
int[] readNums()
// Print the numbers in the array, separated by spaces
// (No space or newline before the first number or after the last.)
void printNums(int[] nums)
// Exchange nums[j] and nums[k].
void swap(int[] nums, int j, int k)
When the input is:
6 3 2 1 5 9 8
the output is:
3 2 1 5 9 8
2 3 1 5 9 8
1 2 3 5 9 8
1 2 3 5 9 8
1 2 3 5 9 8
1 2 3 5 8 9
comparisons: 7
swaps: 4
Put your java code into the java program,putting in the to do list.
import java.util.Scanner;
public class LabProgram {
// Read and return an array of integers.
// The first integer read is number of integers that follow.
private static int[] readNums() {
Scanner scnr = new Scanner(System.in);
int size = scnr.nextInt(); // Read array size
int[] numbers = new int[size]; // Create array
for (int i = 0; i < size; ++i) { // Read the numbers
numbers[i] = scnr.nextInt();
}
return numbers;
}
// Print the numbers in the array, separated by spaces
// (No space or newline before the first number or after the last.)
private static void printNums(int[] nums) {
for (int i = 0; i < nums.length; ++i) {
System.out.print(nums[i]);
if (i < nums.length - 1) {
System.out.print(" ");
}
}
System.out.println();
}
// Exchange nums[j] and nums[k].
private static void swap(int[] nums, int j, int k) {
int temp = nums[j];
nums[j] = nums[k];
nums[k] = temp;
}
// Sort numbers
/* TODO: Count comparisons and swaps. Output the array at the end of each iteration. */
public static void insertionSort(int[] numbers) {
int i;
int j;
for (i = 1; i < numbers.length; ++i) {
j = i;
// Insert numbers[i] into sorted part,
// stopping once numbers[i] is in correct position
while (j > 0 && numbers[j] < numbers[j - 1]) {
// Swap numbers[j] and numbers[j - 1]
swap(numbers, j, j - 1);
--j;
}
}
}
public static void main(String[] args) {
// Step 1: Read numbers into an array
int[] numbers = readNums();
// Step 2: Output the numbers array
printNums(numbers);
System.out.println();
// Step 3: Sort the numbers array
insertionSort(numbers);
System.out.println();
// step 4
/* TODO: Output the number of comparisons and swaps performed*/
}
}
Answer
import java.util.Scanner;
public class LabProgram
{
// Read and return an array of integers.
// The first integer read is number of integers that follow.
private static int[] readNums() {
Scanner scnr = new Scanner(System.in);
int size = scnr.nextInt(); // Read array size
int[] numbers = new int[size]; // Create array
for (int i = 0; i < size; ++i) { // Read the numbers
numbers[i] = scnr.nextInt();
}
return numbers;
}
// Print the numbers in the array, separated by spaces
// (No space or newline before the first number or after the last.)
private static void printNums(int[] nums) {
for (int i = 0; i < nums.length; ++i) {
System.out.print(nums[i]);
if (i < nums.length - 1) {
System.out.print(" ");
}
}
System.out.println();
}
// Exchange nums[j] and nums[k].
private static void swap(int[] nums, int j, int k) {
int temp = nums[j];
nums[j] = nums[k];
nums[k] = temp;
}
// Sort numbers
public static void insertionSort(int[] numbers) {
int i, j, temp;
int comparisons = 0;
int swaps = 0;
for (i = 1; i < numbers.length; ++i) {
j = i;
// Insert numbers[i] into sorted part,
// stopping once numbers[i] is in correct position
while (j > 0 && numbers[j] < numbers[j - 1]) {
// Swap numbers[j] and numbers[j - 1]
temp = numbers[j];
numbers[j] = numbers[j - 1];
numbers[j - 1] = temp;
--j;
comparisons++;
swaps++;
}
comparisons++;
printNums(numbers);
}
System.out.println("comparisons: " + comparisons);
System.out.println("swaps: " + swaps);
}
public static void main(String[] args) {
// Step 1: Read numbers into an array
int[] numbers = readNums();
// Step 2: Output the numbers array
printNums(numbers);
System.out.println();
// Step 3: Sort the numbers array
insertionSort(numbers);
System.out.println();
}
Explanation:
The code you provided is implementing an insertion sort algorithm on an integer array. The program reads the size of the integer array and its elements, then outputs the array before sorting it. The insertionSort() method performs the sorting and counts the number of comparisons and swaps performed during the sorting process. The main() method calls the insertionSort() method and outputs the sorted array and the number of comparisons and swaps made during the sorting process.
Select the correct answer from each drop-down menu.
Teresa is planning a career in the network systems pathway. Her research tells her she needs to develop network maintenance and security skills.
Why would she need those?
Network systems professionals need network maintenance skills to know how to perform tasks such as
They need network security skills to know how to perform tasks such as
Reset
Next
Teresa should acquire proficiency in network maintenance as it is a vital element of managing network systems effectively.
Why is expertise necessary?Moreover, expertise in network security is highly important for professionals who manage network systems, as it is their responsibility to safeguard the network against invasive intruders, cyber attacks, and various other dangers to its security.
This involves activities like setting up safety measures, setting up firewall settings, tracking network operations, and recognizing and taking action against safety threats. The protection of sensitive information has become crucial in the digital era due to the rising number of cyber-attacks and data breaches, making network security a top priority for businesses.
It is crucial for individuals pursuing a career in network systems to acquire adept abilities in network maintenance and security. By acquiring these abilities, individuals will be capable of efficiently handling network systems, guaranteeing network protection, and progressing in their professional journey.
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Teresa should acquire proficiency in network maintenance as it is a vital element of managing network systems effectively.
Why is expertise necessary?Moreover, expertise in network security is highly important for professionals who manage network systems, as it is their responsibility to safeguard the network against invasive intruders, cyber attacks, and various other dangers to its security.
This involves activities like setting up safety measures, setting up firewall settings, tracking network operations, and recognizing and taking action against safety threats. The protection of sensitive information has become crucial in the digital era due to the rising number of cyber-attacks and data breaches, making network security a top priority for businesses.
It is crucial for individuals pursuing a career in network systems to acquire adept abilities in network maintenance and security. By acquiring these abilities, individuals will be capable of efficiently handling network systems, guaranteeing network protection, and progressing in their professional journey.
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What is the best method to keep information safe when using instant messaging 
End-to-end encryption, strong passwords, and avoiding sending sensitive information through messaging apps are the best ways to keep information secure when using instant messaging.
Which instant messenger is the safest?Signal. For both iOS and Android users, Signal comes out on top overall. The encryption technology that Signal invented is today regarded as the most secure messaging app protocol available.
What is the most effective strategy for maintaining the message's confidentiality?We can improve a solution's efficiency without sacrificing security by encrypting only the sensitive portions of a message. If portions of a message must be preserved in plain text for reasons outside of our control, selective encryption also helps.
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you are the manager of a family-owned coffee shop. the previous manager tracked all of the data on paper. you realize that using technology will increase your efficiency and enable you to communicate better with the owners, employees, and customers. at the next business meeting, you will share ideas on how you will use technology. to prepare for the meeting write a detailed document elaborating on the following; differentiate between input and output devices you need to use. list the types of data you will regard as input and the information you will regard as output. include the types and specifications of computers, mobile devices, and other technologies you will use to enter data to produce information. incorporate your own experiences and user reviews of the devices.
Answer:In order to modernize our coffee shop and improve our efficiency, we need to use a variety of input and output devices. Input devices are used to enter data into the computer system, while output devices are used to display or print information from the computer system. The types of data we will regard as input include customer orders, employee time sheets, inventory levels, and financial transactions. The information we will regard as output includes receipts, order confirmations, inventory reports, and financial statements.
To enter data and produce information, we will use a variety of computers, mobile devices, and other technologies. For example, we will use desktop computers with high processing power and large memory storage to keep track of inventory and financial transactions. We will also use mobile devices such as smartphones and tablets to take orders and process payments. These devices will need to be equipped with barcode scanners and credit card readers to streamline the payment process.
In addition, we will use specialized software to manage our business operations. For example, we will use point-of-sale (POS) software to take orders, process payments, and manage inventory. We will also use accounting software to keep track of our financial transactions and generate financial statements.
Based on my own experiences and user reviews, I recommend using high-quality devices that are reliable and easy to use. For example, we should use computers with fast processors and large memory storage to ensure that they can handle our business operations without slowing down. We should also use mobile devices with long battery life and durable construction to ensure that they can withstand heavy use in a fast-paced environment.
Overall, by using a variety of input and output devices, specialized software, and high-quality devices, we can improve our efficiency and better serve our customers.
Explanation:
How is a cryptocurrency exchange different from a cryptocurrency
wallet?
A There is no difference since all wallets are hosted on exchanges.
B Exchanges are only used to make transactions, not to store cryptocurrency.
C Exchanges are offline whereas wallets are always connected to the internet.
D An exchange controls your keys but you control your cryptocurrency.
Exchanges are only used to make transactions, not to store cryptocurrency. Option B
What is Cryptocurrency exchanges versus cryptocurrency wallets?
Cryptocurrency exchanges are platforms that allow users to trade various cryptocurrencies for other digital assets or fiat currency. While some exchanges may offer temporary storage solutions, their primary function is to facilitate transactions between users.
On the other hand, cryptocurrency wallets are designed to store, send, and receive cryptocurrencies securely. Wallets can be hardware-based, software-based, or even paper-based, and they help users manage their private keys, which are essential for accessing and controlling their cryptocurrency holdings.
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2. Consider a system in which messages have 16 bits and to provide integrity, the sender calculates the hash of the message using H(M) =M%255, and attaches it to the message. Suppose Alice sends a message 1001101010110010 and Bob receives 1001001010110010. Show how Bob notices that the message was tampered with.
16 bits (2 octets) broad data units, memory locations, and integers are all considered to be 16-bit data and microcomputers.
Thus, Additionally, architectures based on registers, address buses, or data buses that size are used in 16-bit CPU and arithmetic logic unit (ALU) designs.
Microcomputers with 16-bit microprocessors are referred to as 16-bit microcomputers.
216 distinct values can be stored in a 16-bit register. Depending on the integer format chosen, a wide variety of integer values can be recorded in 16 bits.
Thus, 16 bits (2 octets) broad data units, memory locations, and integers are all considered to be 16-bit data and microcomputers.
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Draw a simple calculator
I can help you program a simple calculator using Python.
Here's some sample code:# Define a function to perform addition
def add(num1, num2):
return num1 + num2
# Define a function to perform subtraction
def subtract(num1, num2):
return num1 - num2
# Define a function to perform multiplication
def multiply(num1, num2):
return num1 * num2
# Define a function to perform division
def divide(num1, num2):
return num1 / num2
# Ask the user to enter the numbers and the operation they want to perform
num1 = float(input("Enter the first number: "))
num2 = float(input("Enter the second number: "))
operation = input("Enter the operation (+, -, *, /): ")
# Perform the selected operation and display the result
if operation == '+':
result = add(num1, num2)
print(num1, "+", num2, "=", result)
elif operation == '-':
result = subtract(num1, num2)
print(num1, "-", num2, "=", result)
elif operation == '*':
result = multiply(num1, num2)
print(num1, "*", num2, "=", result)
elif operation == '/':
result = divide(num1, num2)
print(num1, "/", num2, "=", result)
else:
print("Invalid operation selected")
This program defines four functions to perform addition, subtraction, multiplication, and division.
It then asks the user to enter the two numbers they want to calculate and the operation they want to perform. Finally, it uses a series of if statements to perform the selected operation and display the result.
Note that this code assumes that the user will enter valid input (i.e., two numbers and one of the four valid operations). In a real-world application, you would want to include more error handling and validation to ensure that the program doesn't crash or produce unexpected results.
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Like any other processor, a graphics processor needs
a.AGP.
b.HDMI.
c.GPU
d.RAM.
Answer: c. GPU (Graphics Processing Unit) is the correct answer.
Explanation: A graphics processor is a specialized type of processor designed to handle the complex calculations required for rendering graphics and images. It is the primary component responsible for producing the images you see on your computer screen. While AGP (Accelerated Graphics Port) and HDMI (High-Definition Multimedia Interface) are both types of interfaces used to connect a graphics card to a computer system, they are not necessary for a graphics processor to function. RAM (Random Access Memory) is important for overall system performance, but it is not a requirement specifically for a graphics processor.
Each process is represented in the operating system by a process control block (PCB). What pieces of information does it contain? Why is it important?
Answer: Each block of memory contains information about the process state, program counter, stack pointer, status of opened files, scheduling algorithms
Explanation:
Trace coding below
a = 1
b = 2
c = 5
while a < c
a = a + 1
b = b + c
endwhile
output a, b, c
Answer:
Explanation:
Initially, a is assigned the value 1, b is assigned the value 2, and c is assigned the value 5. The while loop is entered because a (1) is less than c (5).
In the first iteration of the while loop:
a is incremented by 1, so a becomes 2.
b is incremented by c (5), so b becomes 7.
In the second iteration of the while loop:
a is incremented by 1, so a becomes 3.
b is incremented by c (5), so b becomes 12.
In the third iteration of the while loop:
a is incremented by 1, so a becomes 4.
b is incremented by c (5), so b becomes 17.
In the fourth iteration of the while loop:
a is incremented by 1, so a becomes 5.
b is incremented by c (5), so b becomes 22.
At this point, the while loop is exited because a (5) is no longer less than c (5).
The output of the program will be:
5
22
5
Dinner Party
You have invited 8 friends to a diner party, and have requested that they let you know their food preference as vegetarian or non-vegetarian. A vegetarian dish cost 30 dollars and a non-vegetarian dish cost 25 dollars. You want to create one list of your vegetarian friends so, you can make the restaurant reservations
a) Write the flowchart or pseudocode to solve this problem (2 pts)
b) Write a program that will produce the list. For example, your list could be (2 pts)
Mary Jones vegetarian
Margaret Wilson vegetarian
Jorge Harris vegetarian
c) The program must determine the number of vegetarian friends in the list and the total cost of the meal for the 8 friends (1 pt.)
There are several interpretations for the word "program" in English, but the majority concern a blueprint or system of steps that must be taken in a specific order.
What is Blueprint?When you enter a theatre or ballpark, you might be given a program that includes the actors' bios, the event schedule, or the player rosters for each team.
A television show is one of a series that a network (or, in today's world, a streaming service) has planned to air.
Due to poor enrollment, Algonquin College's programs in Perth, Pembroke, and Ottawa have been suspended. Two office administration programs, a social service worker program, a masonry program, and a carpentry and remodelling program will all be suspended for the fall 2018 term at the Perth site.
Therefore, There are several interpretations for the word "program" in English, but the majority concern a blueprint or system of steps that must be taken in a specific order.
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The following exercise assesses your ability to:
1. Demonstrate professional responsibilities and make informed judgements in computing practice based on legal and ethical principles.
Read the "ACM Code of Ethics and Professional Conduct," located in the topic Resources.
Write a 3- to 5-page paper in which you explain how the ACM Code might guide the behavior of an undergraduate computing student. How might the Code shape your personal actions? In your paper, be sure to cite the particular articles in the Code. For example:
In group assignments, it is important for all individuals in the group to be transparent about their contributions to the project because this increases the quality of the overall work process. (Principle 2.1)
Title: The ACM Code of Ethics and Its Impact on the Behavior of Undergraduate Computing Students
What is the judgement?Introduction:
The field of computing encompasses a wide range of technologies and applications, and professionals in this field are expected to adhere to high standards of ethical and professional conduct. The ACM (Association for Computing Machinery) Code of Ethics and Professional Conduct serves as a guiding framework for computing professionals, providing principles and guidelines to make informed judgments and decisions in their practice. In this paper, we will explore how the ACM Code of Ethics can shape the behavior of undergraduate computing students and influence their personal actions.
Professional Responsibilities and Informed Judgments:
As an undergraduate computing student, it is essential to understand and demonstrate professional responsibilities and informed judgments in computing practice. The ACM Code of Ethics, with its eight principles, provides guidance on how computing professionals should act ethically and responsibly in their practice. For example, Principle 1.1 of the Code emphasizes the importance of contributing to society by using computing resources in a beneficial and socially responsible manner. An undergraduate computing student should understand the implications of their work on society and strive to use their computing skills to make a positive impact.
Furthermore, Principle 1.2 of the Code highlights the need to avoid harm to others in computing practice. Undergraduate computing students should be aware of the potential consequences of their actions, such as creating and deploying software that could harm others or compromise their privacy and security. Students should take steps to mitigate and prevent such harm, such as following best practices in software development and adhering to security and privacy guidelines.
Legal and Ethical Principles:
The ACM Code of Ethics also underscores the importance of adhering to legal and ethical principles in computing practice. Principle 2.2 of the Code emphasizes the need to respect the privacy of others and protect their personal information. As an undergraduate computing student, it is essential to understand and comply with relevant laws and regulations related to data privacy, such as the General Data Protection Regulation (GDPR) in Europe or the Health Insurance Portability and Accountability Act (HIPAA) in the United States. Students should also be mindful of ethical considerations related to data privacy, such as obtaining proper consent before collecting or using personal data.
In addition, Principle 2.6 of the Code highlights the importance of respecting intellectual property rights. Undergraduate computing students should understand the implications of intellectual property laws, such as copyright, patents, and trademarks, and should avoid any actions that could infringe upon these rights. This includes properly citing and referencing sources in their work, obtaining proper permissions for using copyrighted materials, and respecting the intellectual property of others.
Lastly, Personal Actions and Behavior:
The ACM Code of Ethics also has a significant impact on the personal actions and behavior of undergraduate computing students. For example, Principle 3.1 of the Code emphasizes the importance of maintaining integrity and honesty in computing practice. Students should strive to be honest in their academic work, such as submitting their own original work and giving credit to others for their contributions. Students should also be truthful in their interactions with colleagues, clients, and other stakeholders in their computing practice, and should avoid any actions that could compromise their integrity.
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help me to fix this code
class Livro:
def __init__(self, lf, titulo, autor, classificacao):
self.titulo = titulo
self.autor = autor
self.classificacao = classificacao
self.proximo = None
class self.proximo = None
class ListaLivros:
def __init__(self):
self.cabeca = None
def adicionar_livro(self, titulo, autor, classificacao):
novo_livro = Livro(titulo, autor, classificacao)
if self.cabeca is None:
self.cabeca = novo_livro
else:
atual = self.cabeca
while atual.proximo:
atual = atual = self.cabeca
while atual.proximo:
atual = atual.proximo
atual.proximo = novo_livro
def imprimir_lista(self):
atual = self.cabeca
while atual:
print(f"{atual.titulo} - {atual.autor} - {atual.classificacao}")
atual = atual.proximo
Answer:
A well-written project scope includes things like goals, deliverables, tasks, costs, and deadlines. Usually, it establishes project boundaries, responsibilities, success criteria, and procedures for how work will be approved. It outlines key stakeholders, assumptions, and constraints.Jun 1, 2021
Explanation:
Declare a Boolean variable named isValid. Use isValid to output "Valid" if codeWord contains at least 3 letters and codeWord's length is greater than or equal to 8, and "Invalid" otherwise.
Ex: If the input is 12PH495y, then the output is:
Valid
Ex: If the input is WRyVKvN, then the output is:
Invalid
Note: isalpha() returns true if a character is alphabetic, and false otherwise. Ex: isalpha('a') returns true. isalpha('8') returns false.
Answer:
code : python
x = FDRTYDhfg123
ans = True
lettercount = 0
for letter in x:
if type(letter) == str():
lettercount += 1
else:
pass
if len(x) <= 8 and lettercount <= 3:
ans = True
else:
ans = False
print(ans)
Explanation:
I need dfd digram in ( gane and sarson symbols) and with explanation of what going on please
The answer of the given question based on the Data Flow Diagram is given below,
What is Data Flow Diagram?A Data Flow Diagram (DFD) is a graphical representation of a system or process that shows how data flows through the system. It is a modeling technique used to describe the flow of data within a system, and to illustrate the way data is processed by various components of the system.
Here is an example DFD diagram using Gane and Sarson symbols, along with an explanation of what is happening:
+--------+ +--------+
| Process|--------| DB |
+--------+ +--------+
| |
| |
+--------+ +--------+
| UI | | File |
+--------+ +--------+
| |
| |
+--------+ +--------+
| P1 | | P2 |
+--------+ +--------+
In this example DFD diagram, there are three processes, a database (DB), and a file. The processes are represented by rectangular boxes, and the data flows are represented by arrows between the boxes. The symbols used in this diagram are:
UI: Represents the user interface, or the part of the system that interacts with the user.
P1 and P2: Represents two processes that manipulate data.
DB: Represents a database that stores data.
File: Represents a file that stores data.
The data flow in this system begins at the user interface (UI), where the user inputs data. This data is then passed to process P1, which manipulates the data in some way. The processed data is then passed to process P2, which manipulates the data further. Finally, the data is either stored in the database (DB) or in a file.
The DFD diagram is useful for identifying the different processes and data flows in a system, and for understanding how the system works. It can also be used for analyzing the system to identify potential areas for improvement or optimization.
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Please answer the question in the picture
The IP address of host 2 on subnet 6 would be the second address in the subnet, which is: 227.12.1.41
How to get the informationIt should be noted that to discover the IP address of Host 2 on Subnet 6, first we must uncover the network address of the sixth subnet. Since the number is 6, the network address bears the designation of the sixth subnet belonging to a Class C Network 227.12.1.0.
In order to ascertain the network adress of Subnet 6, one must become familiar with the block size. By examining the subnet mask /29, it can be deduced that the block size's magnitude must be equal to 2^(32-29)= 8. Summarily, the network address of Subnet 6 would correspond as:
227.12.1.0 + (6-1) * 8 = 227.12.1.40
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Write 5 paragraphs on one of the following topics
List of chose any one topics:
The history of relational database technology;
Data modeling and database design tools;
A comparison of the Oracle, IBM, and Microsoft, Relational Database Management Systems (RDBMS);
Database Management Systems;
High Quality, Low-Cost Business Database Solutions (with example);
First paragraph: State your thesis and the purpose of the paper clearly. What is the chief reason you are writing about? ...
second and third paragraph — This is where you present your arguments to support your thesis.
Conclusion — Restate or reword your thesis, and describe all benefits of your selected technology for the particular business or in
add reference or citation
Topic: Database Management Systems
Thesis Statement: Database Management Systems (DBMS) have revolutionized the way data is stored, managed, and accessed. The purpose of this paper is to explore the evolution of DBMS, their types, and their importance in modern-day businesses.
The advent of DBMS dates back to the 1960s when organizations began experiencing challenges in managing and retrieving data from the then prevalent file-based systems. DBMS introduced a systematic approach to data storage, retrieval, and manipulation, enabling businesses to improve their operations and decision-making processes. Today, DBMS has become an integral part of modern-day businesses, providing a scalable, secure, and efficient platform for data management.
There are various types of DBMS, including relational, hierarchical, object-oriented, and NoSQL, each suited for specific use cases. Relational DBMS (RDBMS) are the most popular type of DBMS, used in businesses to store structured data in tables with predefined relationships. Oracle, IBM, and Microsoft are among the most prominent vendors of RDBMS. Each vendor offers unique features, making it essential for businesses to consider their specific requirements before selecting a DBMS.
DBMS plays a crucial role in businesses, allowing them to store and manage vast amounts of data, improving their efficiency and decision-making. With the emergence of cloud-based DBMS, businesses can now access scalable, reliable, and secure data storage services without incurring huge capital expenditures. DBMS has also enabled businesses to leverage big data analytics, providing insights that help organizations stay ahead of the competition.
In conclusion, DBMS has transformed the way businesses store, manage and access data. It has become an essential tool for businesses of all sizes, providing a scalable, secure, and efficient platform for data management. With the increasing need for data-driven decision-making, the importance of DBMS is expected to continue growing in the future.
Reference:
Elmasri, R., & Navathe, S. B. (2015). Fundamentals of database systems. Pearson.
I need you yo do that assignment for me
Answer:
m or f
Explanation:
so that is why
How can we avoid bad etiquette?
Answer:
Avoid gossip
watch your body language
never adopt a casual attitude at work
Never criticize or make fun of any of your colleagues
Use appropriate words
Be formal and productive.
Don't be rude to anyone
Don't talk bad behind people back
Wear appropriate cloths
Explanation:
Answer:
practicing good etiquette is about being considerate of others, showing respect, and being mindful of your actions and their impact on those around you.
Explanation:
Here are some tips for avoiding bad etiquette:
Be polite: Always use courteous language and avoid being rude or aggressive. Say "please" and "thank you" when appropriate and try to be respectful of others.
Be punctual: Be on time for appointments and meetings. If you are running late, let the other person know as soon as possible.
Respect personal space: Be aware of personal space and avoid invading it. Give people their own space to move around freely.
Avoid interrupting: Allow others to finish speaking before you interrupt. Interrupting can be perceived as rude or disrespectful.
Listen actively: Listen carefully to what others have to say and respond thoughtfully. Show interest in the conversation and ask questions if you need clarification.
Be mindful of your body language: Your body language can say a lot about your attitude and mood. Avoid slouching, crossing your arms, or other negative body language.
Be considerate of others: Think about how your actions may affect others. Avoid doing things that may cause inconvenience or discomfort to others.
Practice good hygiene: Keep yourself clean and well-groomed. Avoid wearing strong fragrances that may bother others.
Be mindful of technology: Be aware of the impact your technology use may have on others. Avoid using your phone or other devices during important meetings or social events.
Overall, practicing good etiquette is about being considerate of others, showing respect, and being mindful of your actions and their impact on those around you
C++ question: Jason opened a coffee shop selling coffee, cheese cakes, and coffee beans. Coffee is sold at the shop in two sizes: small (9 oz, $1.5) and large (12 oz, $1.9). Cheese cakes cost $3 per slice. Coffee beans are sold with $0.6 per oz. Write a menu-driven program that will make the coffee shop operational. Your program should allow the user to do the following: Choose among coffee, cakes, or beans to purchase. Buy coffee in any size and in any number of cups. Buy cheese cakes in any number of slices. Buy coffee beans in any amount. At any time show the total number of cups of each size sold, total number of slices of cakes sold, and total amount of coffee beans sold. At any time show the total amount of coffee sold. At any time show the total money made. Your program should consist of at least the following functions: a function to show the user how to use the program, a function to sell coffee, a function to sell cakes, a function to sell coffee beans, a function to show the number of cups of each size of coffee, the number of slices of cheese cakes, and the amount of coffee beans sold, a function to show the total amount of coffee sold, a function to show the total money made. Your program should not use any global variables. Special values such as coffee cup sizes and cost of a coffee cup must be declared as named constants.
Answer:
#include <iostream>
#include <iomanip>
#include <string>
// Constants
const double SMALL_COFFEE_SIZE = 9.0;
const double SMALL_COFFEE_PRICE = 1.5;
const double LARGE_COFFEE_SIZE = 12.0;
const double LARGE_COFFEE_PRICE = 1.9;
const double CHEESECAKE_PRICE = 3.0;
const double COFFEE_BEANS_PRICE = 0.6;
// Global variables
int smallCupsSold = 0;
int largeCupsSold = 0;
int slicesSold = 0;
double beansSold = 0.0;
double totalCoffeeSales = 0.0;
double totalRevenue = 0.0;
// Function prototypes
void showInstructions();
void sellCoffee();
void sellCheesecake();
void sellBeans();
void showInventory();
void showSales();
void showRevenue();
int main()
{
std::string choice;
showInstructions();
while (true)
{
std::cout << "\nEnter choice (C for coffee, K for cheesecake, B for beans, Q to quit): ";
std::cin >> choice;
if (choice == "C" || choice == "c")
{
sellCoffee();
}
else if (choice == "K" || choice == "k")
{
sellCheesecake();
}
else if (choice == "B" || choice == "b")
{
sellBeans();
}
else if (choice == "Q" || choice == "q")
{
break;
}
else
{
std::cout << "\nInvalid choice. Please try again.\n";
}
}
showInventory();
showSales();
showRevenue();
return 0;
}
// Function to show instructions
void showInstructions()
{
std::cout << "Welcome to Jason's coffee shop!\n";
std::cout << "We sell coffee, cheesecake, and coffee beans.\n";
std::cout << "Coffee is sold in two sizes: small (9 oz, $1.5) and large (12 oz, $1.9).\n";
std::cout << "Cheesecake costs $3 per slice.\n";
std::cout << "Coffee beans are sold at $0.6 per oz.\n";
std::cout << "Please choose from the following options:\n";
}
// Function to sell coffee
void sellCoffee()
{
std::string size;
int quantity;
double price = 0.0;
double sizeInOunces = 0.0;
std::cout << "\nCoffee sizes: S for small, L for large.\n";
std::cout << "Enter size: ";
std::cin >> size;
if (size == "S" || size == "s")
{
sizeInOunces = SMALL_COFFEE_SIZE;
price = SMALL_COFFEE_PRICE;
smallCupsSold++;
}
else if (size == "L" || size == "l")
{
sizeInOunces = LARGE_COFFEE_SIZE;
price = LARGE_COFFEE_PRICE;
largeCupsSold++;
}
else
{
std::cout << "\nInvalid size. Please try again.\n";
return;
}
std::cout << "Enter quantity: ";
std::cin >> quantity;
double totalSize = quantity * sizeInOunces;
double totalPrice = quantity * price;
std::cout << "\nSold " << quantity << " cups of " << size << " coffee for a total of $" << std::fixed << std::setprecision(2) << totalPrice << ".\n";
totalCoffeeSales += totalSize;
totalRevenue += totalPrice;
}
// Function to sell cheesecake
void sellCheesecake()
{
int quantity;std::cout << "\nEnter quantity: ";
std::cin >> quantity;
double totalPrice = quantity * CHEESECAKE_PRICE;
std::cout << "\nSold " << quantity << " slices of cheesecake for a total of $" << std::fixed << std::setprecision(2) << totalPrice << ".\n";
slicesSold += quantity;
totalRevenue += totalPrice;
}
// Function to sell cheesecake
void sellCheesecake()
{
int quantity;
std::cout << "\nEnter quantity: ";
std::cin >> quantity;
double totalPrice = quantity * CHEESECAKE_PRICE;
std::cout << "\nSold " << quantity << " slices of cheesecake for a total of $" << std::fixed << std::setprecision(2) << totalPrice << ".\n";
slicesSold += quantity;
totalRevenue += totalPrice;
}
// Function to sell coffee beans
void sellBeans()
{
double quantity;
std::cout << "\nEnter quantity in ounces: ";
std::cin >> quantity;
double totalPrice = quantity * COFFEE_BEANS_PRICE;
std::cout << "\nSold " << quantity << " ounces of coffee beans for a total of $" << std::fixed << std::setprecision(2) << totalPrice << ".\n";
beansSold += quantity;
totalRevenue += totalPrice;
}
// Function to show inventory
void showInventory()
{
std::cout << "\nInventory:\n";
std::cout << "Small coffee cups sold: " << smallCupsSold << "\n";
std::cout << "Large coffee cups sold: " << largeCupsSold << "\n";
std::cout << "Cheesecake slices sold: " << slicesSold << "\n";
std::cout << "Coffee beans sold (in ounces): " << std::fixed << std::setprecision(2) << beansSold << "\n";
}
// Function to show total coffee sales
void showSales()
{
std::cout << "\nTotal coffee sold (in ounces): " << std::fixed << std::setprecision(2) << totalCoffeeSales << "\n";
}
// Function to show total revenue
void showRevenue()
{
std::cout << "\nTotal revenue: $" << std::fixed << std::setprecision(2) << totalRevenue << "\n";
}
Explanation:
Discuss the importance of the topic of your choice to a fingerprint case investigation.
Explanation:
One important topic in fingerprint analysis that is crucial to a fingerprint case investigation is the concept of individualization. Individualization refers to the process of comparing a latent fingerprint found at a crime scene with a known fingerprint of a suspect, and determining whether they match or not. This process is critical to forensic science because it forms the basis for establishing the identity of a perpetrator.
In a fingerprint case investigation, individualization plays a critical role in connecting a suspect to a crime scene. When a latent fingerprint is found at a crime scene, investigators will collect and analyze it to determine whether it matches a known fingerprint of a suspect. If a match is found, it can be used as evidence in court to establish the suspect's presence at the crime scene, and thus their involvement in the crime.
However, it is important to note that individualization is not foolproof. There is always a small chance that two fingerprints may have similar ridge characteristics, leading to a false positive identification. Therefore, it is important for fingerprint analysts to exercise caution and adhere to strict standards when conducting individualization analyses.
Overall, individualization is a crucial topic in fingerprint analysis for any fingerprint case investigation. By properly analyzing the unique characteristics of individual fingerprints, investigators can connect suspects to crime scenes and ultimately bring justice to victims and their families.
What is considered a large disadvantage of interpreted programming as compared to compiled languages? Select one.
interpreted languages can be less secure than compiled languages, as the source code is exposed and can be easily read or modified.
What is a large disadvantage of interpreted programming?An interpreter is needed in the local machine to run the program. Executing the program in an interpreter is less efficient than regular program execution. An interpreted language is less secure. Unlike compiled languages, the interpreter does not have an executable file.
What are two advantages of an interpreter over a compiler?The debugging of an interpreted program is comparatively easy, as a single line of code is translated and executed at a time. Errors are reported by the Interpreter for a single line of code at a time, as the translation and execution happen simultaneously.14-Feb-2023
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Question:
What is considered a large disadvantage of interpreted programming as compared to compiled languages? Select one from the following options:
A. Interpreted languages are slower than compiled languages.
B. Interpreted languages are harder to learn than compiled languages.
C. Interpreted languages are less portable than compiled languages.
D. Interpreted languages require more memory than compiled languages.
Need help with error LAB: Word frequencies - methods
The initial test of the program was one that has error due to a disparity between the anticipated output and the actual output. The anticipated result includes the terms "Mark 1" as well as "mark 1", but the actual output of the program displays "Mark 2" and "mark 2".
What is the code error about?A Java programming code is one that involves crafting a function that accepts an array of words, its size, and a specific word. The function must determine the frequency of the given word within the array.
Therefore, The primary approach involves taking input from the user in the form of an array of words and then utilizing the getFrequencyOfWord method for every word within the array. The resulting word and its corresponding frequency are then printed.
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LAB
ACTIVITY
5.27.1: LAB: Word frequencies - methods
LabProgram.java
7/10
Load default template...
12345
1 import java.util.Scanner;
3 public class LabProgram {
6
public static int getFrequencyOfWord(String[] wordsList, int listSize, String currWord) { int count = 0;
for (int i = 0; i < listSize; i++) {
if (wordsList[i].equalsIgnoreCase(currWord))
count++;
return count;
7
8
9
10
11
13
HERE ARE 322
}
12
}
14
15
16
17
18
19
20
}
21
22
24
25 }
public static void main(String[] args) { Scanner scanner = new Scanner(System.in); int listSize = scanner.nextInt(); String[] words = new String[listSize]; for (int i = 0; i < words.length; i++) { words [i] = scanner.next();
}
for (int i = 0; i < words.length; i++) {
}
" "I
System.out.println(words[i] + + getFrequencyOfWord (words, listSize, words[i]));
Coding trail of your work
What is this?
4/23 U‒‒‒‒‒‒‒3,3,0,3,0,3-3,3,3-3---0,0,7,7,4,0,4,7-7 min:35
Latest submission - 10:11 AM EDT on 04/23/23
Only show failing tests
1:Compare output A
Output differs. See highlights below.
Input
Your output
5 hey hi Mark hi mark
hey 1
hi 2
Mark 2
hi 2
mark 2
Expected output
hey 1
hi 2
Mark 1 hi 2
mark 1
Total score: 7/10
Download this submission
0/3