we need usecase diagram that show UPM chat application include that features 1. User signup and login 2. Handles multiples users at the same time 3. Support private messages and public messages 4. Graphics exchange 5. 6. Support for file transfer 7. listing the IP addresses of different logged in users 8. Clients and server must not be on the same network (WiFi)

Answer:

To be distinguished from the physical or hardware components of a computer, programs are collectively referred to as software. A computer system, therefore, is a computer combined with peripheral equipment and software so that it can perform desired functions.

A computer is a device that does certain things (mostly very basic data manipulation and mathematical functions), just as a building is a device that does certain things (such as housing offices or apartments). What makes a computer special is that it does these things very very quickly. A computer system is a mechanism that incorporates multiple computers along with other things like data storage devices, networks, and data paths (ways to move data around among storage devices and computers), as well as software (rules for how to do things), procedures and processes and protocols and on and on. A computer system performs a rather complex function, just as a city is a system that involves multiple buildings along with roads, sewage treatment plants, water and electrical systems and many other things that enable it to perform a function considerably more complex than the function performed by a building.

A major advance in the field of computing was the advent of networking. Before that, computers had to be near each other in order to communicate with each other and computer systems typically existed in a relatively small physical location where all the computers were in the same place. If you see a movie released in the period from roughly 1950 to 1980, you will note that computers and computer systems were typically depicted as gigantic things located in a large room. With networking, a computer system might have computers in one place, remote access devices in another place, and other computers in other places. Thus a building might have computers and terminals and printers and what have you all over it, all capable of communicating with each other. The internet, which enables world wide networks, has made it possible to have computer systems that consist of thousands of computers (or more), located all over the globe.

a computer is like an engine whereas a computer system is like a vehicle (a car or truck or boat) that contains one or more engines and does something more complex than what the engine does. But the engine is the essential component that enables the vehicle to do what it does. a computer exists in a single place and does a primitive set of functions. A computer system combines a computer with many other things to perform a complex set of functions. It can also exist in a single place, but it may exist in many places at the same time.

Explanation:

Pleeeeeeeeeeeeeeeeeeez mark me as brainliest i did this so hardly so plez i beg u and cry to mark me as brainliest and give a vote of full and give a thanks

1

they were crafted in stained-glass art in religious buildings

2

puzzle games

3

motion-capture devices (e.g., Kinect, WiiMote

4

puzzle

simulation

To find the heat capacity of the copper, we can use the principle of heat transfer. The heat lost by the copper is equal to the heat gained by the water.

First, we need to calculate the heat gained by the water using the formula:

Q = m * c * ΔT

Where:

Q is the heat gained by the water

m is the mass of the water (50.0 g)

c is the specific heat of water (4.18 J/g°C)

ΔT is the change in temperature of the water (final temperature - initial temperature)

ΔT = 25.0°C - 20.0°C = 5.0°C

Q = 50.0 g * 4.18 J/g°C * 5.0°C = 1045 J

Since the heat lost by the copper is equal to the heat gained by the water, the heat capacity of the copper can be calculated as:

Q = m * c * ΔT

Rearranging the equation, we get:

Copper heat capacity = Q / ΔT = 1045 J / 5.0°C = 209 J/°C

Therefore, the heat capacity of the copper is 209 J/°C.

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Answer:

Kindly check explanation

Explanation:

food = ['rice', 'beans','yam', 'bread', 'pasta', 'cocoa','tea']

add = ['plantain']

new_list = food + one_more

print(new_list)

Output: ['rice', 'beans','yam', 'bread', 'pasta', 'cocoa','tea','plantain']

food.append('flour')

print(food)

Output : ['rice', 'beans','yam', 'bread', 'pasta', 'cocoa','tea','flour']

food.insert(0,'milk')

Output: ['milk','rice', 'beans','yam', 'bread', 'pasta', 'cocoa','tea']

flowers = ['tulip', 'lavender', 'carnation']

To remove carnation from list

flowers.remove('carnation')

Output : ['lavender', 'carnation']

To remove carnation using pop()

flowers.pop(2)

Chmod o=rx file sets the "other" permissions of the file to read and execute. The correct answer is B.

The chmod command in Linux/Unix is used to change file or directory permissions. In this case, the o option refers to "other" permissions, which means the permissions for users other than the owner or group. The equals sign = sets the permissions to the specified value, and rx specifies read and execute permissions for "other" users.

Option A is incorrect because + adds permissions instead of setting them to a specific value. Option C removes permissions instead of setting them to a specific value. Option D adds read and execute permissions instead of setting them to a specific value.

The correct answer is B.

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CAD, CAM, and 3D animation all are common as they are all specialized software that help to solve a problem in the business industry. The correct option is B.

CAD, or computer-aided design and drafting (CADD), is a design and technical documentation technology that automates manual drafting.

CAD is an abbreviation for Computer-Aided Design, and CAM is an abbreviation for Computer-Aided Manufacturing, both of which are used to create things.

CAD/CAM software is used to create prototypes, finished products, and product production runs.

CAD, CAM, and 3D animation are all related because they are all specific software programs used in business industry.

Thus, the correct option is B.

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Answer:

USB is a small storage device that can be carried in a pocket

Answer:

Explanation:

The following Python code is a function that takes in an array as a parameter, it then loops through the array determining if the element is divisible by 3. If it is it leaves it alone, otherwise it changes it to a 0. Then ouputs the array. A test case is shown in the attached image below using a sample array.

def divisible_by_three(array):

   for x in array:

       if x % 3 == 0:

           pass

       else:

           array[array.index(x)] = 0

   return array

In this exercise we have to use the knowledge of computational language in python to describe the code, like this:

We can find the code in the attached image.

After wondering what an array is, you might wonder what it's for. The main purpose is to store information in an orderly way, that is, for each line, one piece of information. An example of an array is when storing names of people present in a classroom.

The code can be written more simply as:

def divisible_by_three(array):

  for x in array:

      if x % 3 == 0:

          pass

      else:

          array[array.index(x)] = 0

  return array

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Answer:

#include <iostream>

using namespace std;

int main() {  

 int start, end;

 cout << "Enter start number: ";

 cin >> start;

 cout << "Enter end number: ";

 cin >> end;

 for(int n=start; n<=end; n+=5) {

   cout << n << " ";

 }

}

Explanation:

I output the numbers space separated.

Answer:

3/8

Explanation:

Because 2 can't go into 7, the next best thing is 6, so 2x3 is 6 with 1/8 left over~~~~~hope this helps :) pls brainlist

Answer:

the answer is in the website that are there

It is a bad programming practice for the stack adt clear method to simply set the top index to -1 in an array-based implementation because the objects in the stack remain allocated.

What is Stack?

A stack is an Abstract Data Type (ADT) that is found in almost all programming languages. It is called a stack because it behaves like a real-world stack, such as a deck of cards or a pile of plates.

A real-world stack can only perform operations at one end. For instance, we can only place or remove a card or plate from the top of the stack. Similarly, Stack ADT allows all data operations at only one end. We can only access the top element of a stack at any given time.

Because of this feature, it has a LIFO data structure. LIFO is an abbreviation for Last-in-First-Out. The element that was placed (inserted or added) last is accessed first in this case. In stack terminology, an insertion operation is referred to as a PUSH operation, while a removal operation is referred to as a POP operation.

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Denial of service (DoS) attacks can be prevented using several methods, including:

A denial-of-service attack is a type of cyberattack used in computing in which the attacker attempts to render a machine or network resource unavailable to its intended users by irreparably interrupting the operations of a host that is linked to a network.

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The code given below is a basic C# program. This program takes an input integer from the user and computes its square. The program then outputs the result. There are two questions we need to answer about this program.

Question 1: What is the purpose of the program?The purpose of the program is to take an input integer from the user, compute its square, and output the result.

Question 2: What is the output of the program for the input 5?To find the output of the program for the input 5, we need to run the program and enter the input value. When we do this, the program computes the square of the input value and outputs the result. Here is what the output looks like:Enter an integer5The square of 5 is 25Therefore, the output of the program for the input 5 is "The square of 5 is 25".The code is given below:public class Square {public static void Main() {int num;string inputString;Console.WriteLine("Enter an integer");inputString = Console.ReadLine();num = Int32.Parse(inputString);Console.WriteLine("The square of " + num + " is " + (num * num));}}

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Data modelling is an element of system analysis and conceptual design.

Data modelling is the process of developing a visual representation of an entire information system or specific components of it in order to convey connections between various data points and organisational structures. The objective is to illustrate the various types of data that are used and stored within the system, the connections between these types of data, the various ways that data can be grouped and organised, as well as its formats and attributes.

Data models are created with business needs in mind. In order to be incorporated into the design of a new system or modified during an iteration of an existing one, rules and requirements are defined upfront through feedback from business stakeholders. Different levels of abstraction can be used to model data. Information about the business requirements is first gathered from end users and stakeholders.

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Answer:

Explanation:

Most smartphone security experts agree that one way to prevent unauthorized access to one's iPad is to enable the erase data feature. Enabling this feature is believed to allow the possibility of all data on the device to be erased if a wrong passcode is entered after a specified number of times.

Of course, it is also possible to set a complex alphanumeric passcode, however, you'll need to first disable the simple passcode option.

Answer: See explanation

Explanation:

Computer hardware simply refers to the part of the computer that we can see and also touch. This includes the mouse, keyboard, monitor, central processing unit, monitor etc.

The computer software simply refers to the set of instructions which are used in the operation of the computer. It includes the application programs, operating system etc.

Outlook blocks attachments for security or blocked file type, try renaming, compressing, cloud storage, or adjusting security settings.

Outlook may block attachments due to security concerns or because the file type is blocked by Outlook's security settings. Possible solutions include renaming the file extension, compressing the file, sending the file via cloud storage, or adjusting Outlook's security settings.

Additionally, some organizations have policies in place that restrict the sending of certain types of attachments due to security concerns, such as executable files. In some cases, email service providers, including Outlook, will block attachments that contain viruses or malware. If you suspect that your attachment is being blocked due to a security concern, it is recommended to scan the file using antivirus software before attempting to send it.

It's also important to keep in mind that some email servers have size limits for attachments. If the attachment you are trying to send is too large, it may not go through, even if it is not being blocked by Outlook. In this case, you can try compressing the file to reduce its size, or you can send the file via cloud storage and include a link to the file in the email.

If you continue to experience issues with attachments being blocked by Outlook, it may be best to consult with your IT department or Microsoft support for further assistance.

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Answer: Star

Explanation:

Answer:

Step 1: Input the two numbers, a and b.

Step 2: Output a + b.

Step 3: Output a - b.

Step 4: Output a * b.

Step 5: If b = 0 output “undefined”.

Step 6: Else output a / b.

Step 1 If ( a < b ) then there will be no answer .

step 2f ( a = b ) then all the numbers greater than a are the answer so there will be infinite solutions possible.

Step 3 If ( a > b ) Suppose x is an answer to our equation. Then x divides (a – b).

A user calls Alice at the IT help desk and reports intermittent problems accessing both local servers and Internet websites.

Alice can rule out duplicate MAC addresses as it is not related to the reported issue. However, she cannot rule out duplicate IP addresses, malfunctioning router, or malfunctioning DNS server as they can all cause intermittent connectivity problems. Alice needs to troubleshoot and investigate further to determine the root cause of the issue and provide a resolution.

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Answer: Answer Surface

Explanation:

#Swap this value by your name. Mine is Hamza :)

my_name = "Hamza"

#Get input from user.

inp = input("What's your name?: ")

#Print the length of his/her name.

print("The length of your name is",len(inp),"characters.")

#Check if the input matches with my name?

#Using lower() method due to the case insensitive. Much important!!

if(inp.lower()==my_name.lower()):

   print("My name is",my_name,"too! Nice to meet you then.")

Type the command, followed by the > or >> operator and the path to the file where you want the command's output to go in order to redirect it. The ls command, for instance, displays a list of the files and directories in the current directory.

To store command output to a file in Linux, use redirection. In Linux, redirection can be used for this. Instead of displaying the output on the screen, the redirection operator sends it to the specified file. The > replaces any existing content on the file by redirecting the command output to the file. The routines for output to a text terminal either send output there or retain track of output sent there.

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leave (i'm pretty sure this is the answer)

If you try to close PowerPoint while there are unsaved changes, you will be asked whether you want to save them.

You may create projects, write text, and create presentations online using the software called PowerPoint Presentation. Slides may be created, transitions can be included, and ideas can be presented to friends or professors.

A businessman can present what he thinks or has to say by using a PowerPoint to keep his thoughts and ideas organized. Yes, I am aware. PowerPoint is something I've been using for a while now.

Basically, you press the home button in the upper-left corner of your screen, and an option that says "create a new slide" should appear there.

Therefore, if you attempt to close PowerPoint with modifications that have not been saved, you will be prompted to do so.

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Answer:

The output is 100

Explanation:

See attachment for complete question

I'll be making reference to the attachment time to time.

On line 1 of the attachment, variable fizz was declared

On line 2, variable bop was declared

Variable bop was initialised to 10 on line 3

Variable fizz was initialised to 20 on line 4

On line 5, 100 was assigned to bop

On line 6, 200 was assigned to fix

The value of bop was printed on line 7.

Note that, the current value of bop is not 100 (as updated on line 5).

Hence, the output of the program at line 7 is 100

Based on the program command displayed in the console, the output displayed by the console.log command would be 100.

Hence, the output would be 100.

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The Application program that saves data automatically as it is entered MS Access. The correct option is C.

Microsoft Access is a database management system that includes a graphical user interface, the relational Access Database Engine, and software-development tools.

It is a component of the Microsoft 365 software package and is available as a standalone product or as part of the Professional and higher editions.

Data kept in Access may be found and reported on with ease. Make interactive data entry forms. a variety of data sources can be imported, transformed, and exported.

Access is often more effective at managing data because it makes it easier to keep it structured, searchable, and accessible to several users at once.

MS Access is an application tool that automatically saves data as it is entered.

Thus, the correct option is C.

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Correct Answer:

c.

SELECT InvoiceNumber, VendorName

FROM Invoices JOIN Vendors ON Invoices.VendorID = Vendors.VendorID

WHERE InvoiceTotal IN (SELECT MAX(InvoiceTotal) FROM Invoices)

Explanation:

All options only differ on the WHERE clause:

a: WHERE InvoiceTotal = MAX(InvoiceTotal)

Fails because aggregate functions (like MAX, COUNT, etc) have to be used on the SELECT clause.

b: WHERE InvoiceTotal = (SELECT MAX(InvoiceTotal))

Fails because the SELECT clause is incomplete.

c: WHERE InvoiceTotal IN (SELECT MAX(InvoiceTotal) FROM Invoices)

This one is correct, and returns the InvoiceNumber and VendorName register with the largest value on the InvoiceTotal field.

The statement "the original or copy of a vehicle’s registration must be kept at home unless the registration is being renewed or transferred" is false.

A vehicle registration is a mandatory record that identifies a specific vehicle and its owner and is kept with the vehicle's governing agency. In a jurisdiction, the registration number is a distinctive alphanumeric identifier that identifies the vehicle within the jurisdiction's licensing scheme.

In conclusion, the original or copy of a vehicle's registration must not be kept at home. Instead, the original registration must be held in the vehicle, and if a copy is required, it must be obtained from the governing agency.

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