you need to store key-value pairs of users and their high scores for a gaming application. which is the fastest and cheapest storage option for this type of data?

Answers

Answer 1

Amazon S3 - RDS MySQL - DynamoDB - Amazon RedShift is the quickest and least expensive storage solution for gaming application data.

Key-value pair-based items are stored in what form of storage?

A key-value database stores data as key-value pairs, where a key serves as a unique identifier. Anything, from simple items to complex composite ones, can be used as a key or value.

What types of data are supported by S3?

Almost every type of data can be stored in any format. For more information, please see the Amazon Web Services Licensing Agreement. You are permitted to store an infinite number of items and pieces of data.

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Related Questions

What are examples of common computer hardware problems? select three options. Pages from a printer come out blank. Programs freeze or quit unexpectedly. The monitor goes blank or turns black. The keyboard keys get stuck or fall off. The mouse responds very slow to a click command the computer crashes when trying to boot up.

Answers

Answer:

Pages from a printer come out blank.

The monitor goes blank or turns black.

The keyboard keys get stuck or fall off.

What needs to be public and what needs to be private?

Answers

In this scenario, the most appropriate implementation of the Car class would be:

public class Car
{
public String make;
public String model;
public Car(String myMake, String myModel) { /* implementation not shown */ }
}
In this implementation, the attributes make and model are both declared as public, which means that they can be accessed and modified by code outside of the Car class. This is appropriate, as the make and model of a car are typically considered to be public information that can be accessed by anyone.

The constructor for the Car class is also declared as public, which means that it can be called by code outside of the Car class. This is appropriate, as the constructor is used to create new instances of the Car class, and this functionality should be available to code outside of the class.

In contrast, if the attributes make and model were declared as private, they would only be accessible within the Car class and would not be available to code outside of the class. Similarly, if the constructor were declared as private, it would only be accessible within the Car class and could not be called by code outside of the class. These declarations would limit the ability of code outside of the Car class to access and use the make, model, and constructor functionality, which would not be appropriate for this scenario.

main menu2of12 in the five-layer hierarchy of apple's operating systems, mac os x/macos, which layer is most complex?

Answers

In the five-layer hierarchy of apple's operating systems, mac os x/macos, The layer that is most complex is Layer five, the application layer that has Cocoa and Carbon.

What distinguishes the Apple operating system (OS) from others?

The operating system that runs every Mac is called macOS, and it is the first layer in Apple's five-layer operating system architecture. It enables you to perform tasks that other computers simply cannot perform. This is so because it was built to work with the hardware that it uses, and vice versa.

Therefore, one can say that the OSI (Open Systems Interconnection) model's Session Layer regulates the conversations (connections) between computers. The connections between the local and distant applications are established, managed, and terminated by it.

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algorithm workbench 1. write an if statement that assigns 100 to x when y is equal to 0. 2. write an if-else statement that assigns 0 to x when y is equal to 10. otherwise, it should assign 1 to x.

Answers

Used the equal operator == in the if statement, which returns true if the value to its right is equal to the value to its left and false otherwise.

What is the  if statement ?I used the equal operator == in the if statement, which returns true if the value to its right is equal to the value to its left and false otherwise.By using this operator, you can determine the value of y and, if it is 10, you can assign 0 to x and 1, if it is false, 1, to x.== is used for passwords, for instance, to make a number or string equal to a variable. It is accurate if mypasswords == passwordentered. It is used to verify if the left input is accurate before moving on to the right one.

Program:

if(y==10)

{

    x=0;   // assigning 0 to x if y equals 10.

}

else

{

  x=1;   // assigning 100 to x otherwise.

}

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Templates contain common layout and formatting that can save you time by not having to recreate documents from scratch

Answers

Templates contain common layout and formatting that can save you time by not having to recreate documents from scratch is true.

What is the purpose of applying templates?

Using templates makes creating documents easier. The use of templates can reduce stress and lessen work-related burdens while also improving productivity. The audience is more attentive while using templates. They aid in time and financial savings.

Therefore, based on the above, Standard layouts or placeholder text are frequently included in document templates so they can be reused whenever new files are created. As a result, using the template eliminates the need to constantly produce new documents by allowing users to reuse certain common sections of text and merely fill in the variable sections.

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See full question below

Templates contain common layout and formatting that can save you time by not having to recreate documents from scratch. triu or false.

Open the NetBeans IDE and create a new project named MyGradeLoops.java. Your program should do the following:

declare and initialize a char variable for the student grade;
use a for loop that has five iterations;
use the System.out.println() method in the for loop to request a grade from the student;
use the System.in.read() method to receive student grades in the for loop;
use the System.out.println() method to tell the student to try again if they enter anything other than one letter for a grade;
use the System.out.println() method after the for loop to output a message for the student; and,
compile and run your program.

Answers

Using knowledge in computational language in JAVA it is possible to write a code that Open the NetBeans IDE and create a new project named MyGradeLoops.java.

Writting the code:

package grading.on.a.loop.java;

public class GradingOnALoopJava {

   public static void main(String[] args) {

       char studentgrade = 100;

       System.out.println("Please enter your Grade here.");

       for(int counter = 75; counter <= 100; counter += 5) {

           System.out.println(counter);

           System.out.println("Please enter your Grade.");

       }

   }

}

package grading.on.a.loop.java;

public class GradingOnALoopJava {

   public static void main(String[] args) {

       char studentgrade = 100;

       System.out.println("Please enter your Grade here.");

       for(int counter = 75; counter <= 100; counter += 5) {

           System.out.println(counter);

           System.out.println("Please enter your Grade.");

           System.in.read("");

       }

   }

}

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What are the disadvantages of de-identification

Answers

deidetifying data to do research can also leave individuals studies with that data set anonymous; there are inherit privacy risks

you need to view the files within /home/gshant/expfile.bz2, but you want to leave the compressed file unchanged. which bzip2 option should you use?

Answers

-k should be used in  bzip2 option.

What purposes serves bzip2?

In Linux, using bzip2 program is employed to compressing and decompress files, or to combine multiple files into a consolidated one that uses less storage space than the original file did. It uses more memory and features a slower decompression time.

Where can I find bzip2?

The README file included with the installation files contains instructions for installing bzip2. And used an ANSI Source code, it builds similarly to C and C++ files. Instead of using the usual directories, bzip2 is installed in the example below to /Users/ch/bzip2-1.0. 8.

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a pet store sells dogs, cats, birds, and hamsters. write a declaration for an anonymous enumerated data type that can represent the types of pets the store sells.

Answers

Enumerators can be freely utilized to provide features like control variables or even improved readability because they have been developed and specified.

What is a fundamental data type?

The primary or fundamental data types are other names for the fundamental data types. The C language uses basic data types to store the accessible values in integer and decimal representations, and these types accept both unregistered and signed literals.

What does SQL datatype mean?

A type of data is an attribute that describes the kind of data an object can store, such as binary strings, numeric data, character data, financial data, time and date data, and so on. System data types are provided by SQL Server and can be utilized with SQL Server.

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To save a URL, we use:

Copy
Bookmark
Save
Paste

Answers

Answer

A bookmark is a web browser feature used to save a web site's URL address for future reference. Bookmarks save user and browser time, which is especially useful for Web pages with long URLs or accessing a specific part of the site that might not be the homepage for the site.

Please Help! (Language=Java) This is due really soon and is from a beginner's computer science class!
Assignment details:
CHALLENGES
Prior to completing a challenge, insert a COMMENT with the appropriate number.

1) Get an integer from the keyboard, and print all the factors of that number. Example, using the number 24:

Factors of 24 >>> 1 2 3 4 6 8 12 24
2) A "cool number" is a number that has a remainder of 1 when divided by 3, 4, 5, and 6. Get an integer n from the keyboard and write the code to determine how many cool numbers exist from 1 to n. Use concatenation when printing the answer (shown for n of 5000).

There are 84 cool numbers up to 5000
3) Copy your code from the challenge above, then modify it to use a while loop instead of a for loop.

5) A "perfect number" is a number that equals the sum of its divisors (not including the number itself). For example, 6 is a perfect number (its divisors are 1, 2, and 3 >>> 1 + 2 + 3 == 6). Get an integer from the keyboard and write the code to determine if it is a perfect number.

6) Copy your code from the challenge above, then modify it to use a do-while loop instead of a for loop.

Answers

Answer:

For challenge 1:

import java.util.Scanner;

public class Main {

   public static void main(String[] args) {

       // Get an integer from the keyboard

       Scanner scanner = new Scanner(System.in);

       System.out.print("Enter an integer: ");

       int num = scanner.nextInt();

       // Print all the factors of the integer

       System.out.print("Factors of " + num + " >>> ");

       for (int i = 1; i <= num; i++) {

           if (num % i == 0) {

               System.out.print(i + " ");

           }

       }

   }

}

For challenge 2:

import java.util.Scanner;

public class Main {

   public static void main(String[] args) {

       // Get an integer from the keyboard

       Scanner scanner = new Scanner(System.in);

       System.out.print("Enter an integer: ");

       int n = scanner.nextInt();

       // Count the number of cool numbers from 1 to n

       int coolCount = 0;

       for (int i = 1; i <= n; i++) {

           if (i % 3 == 1 && i % 4 == 1 && i % 5 == 1 && i % 6 == 1) {

               coolCount++;

           }

       }

       // Print the result using concatenation

       System.out.println("There are " + coolCount + " cool numbers up to " + n);

   }

}

For challenge 3:

import java.util.Scanner;

public class Main {

   public static void main(String[] args) {

       // Get an integer from the keyboard

       Scanner scanner = new Scanner(System.in);

       System.out.print("Enter an integer: ");

       int n = scanner.nextInt();

       // Count the number of cool numbers from 1 to n using a while loop

       int coolCount = 0;

       int i = 1;

       while (i <= n) {

           if (i % 3 == 1 && i % 4 == 1 && i % 5 == 1 && i % 6 == 1) {

               coolCount++;

           }

           i++;

       }

       // Print the result using concatenation

       System.out.println("There are " + coolCount + " cool numbers up to " + n);

   }

}

For challenge 5:

import java.util.Scanner;

public class Main {

   public static void main(String[] args) {

       // Get an integer from the keyboard

       Scanner scanner = new Scanner(System.in);

       System.out.print("Enter an integer: ");

       int num = scanner.nextInt();

       // Determine if the integer is a perfect number

       int sum = 0;

       for (int i = 1; i < num; i++) {

           if (num % i == 0) {

               sum += i;

           }

       }

       if (sum == num) {

           System.out.println(num + " is a perfect number.");

       } else {

           System.out.println(num + " is not a perfect number.");

       }

   }

}

For challenge 6:

import java.util.Scanner;

public class Main {

   public static void main(String[] args) {

       // Get an integer from the keyboard

       Scanner scanner = new Scanner(System.in);

       System.out.print("Enter an integer: ");

       int num = scanner.nextInt();

       // Determine if the integer is a perfect number using a do-while loop

       int sum = 0;

       int i = 1;

       do {

           if (num % i == 0) {

               sum += i;

           }

           i++;

       } while (i < num);

       if (sum == num) {

           System.out.println(num + " is a perfect number.");

       } else {

           System.out.println(num + " is not a perfect number.");

       }

   }

}

Helpppp!!!!!! i need help please

Answers

for i in range(4,28,+4):

   print(i)

What is the value returned by the following function?
int function( )
{
int value = 35;
return value + 5;
value += 10;
}

Answers

Answer:

returned value is 40.

Explanation:

value = 35, and the function returns value + 5

35 + 5 = 40

Which of the following statements is false?

A.
Obstacles can make a game frustrating.

B.
Obstacles can be rewarding when they are overcome.

C.
Physical obstacles are better than mental obstacles.

D.
Obstacles can be used to keep the player in the play area.

Answers

c because physical obstacles hurt

imagine a designer finishes a client project and wants to write a case study. they draft a case study that describes their role in the project, the goal of the project, and the target user. they also add sketches and wireframes, and their polished designs. what critical components are missing from the case study? select all that apply.

Answers

The critical components are mission from the case study is d. The research conducted and research findings

The case study is a vital insight for the clients. The designer write case study to tell to the clients how the work must be done and how they handle the work.

The critical component of case study is the most important component in case study which if this component is missing, the case study will not give the expected results and it can make the client have bad perception about the designer.

Since case study is a short written about how designer work so the critical component is the role in project, the goal of project, the target user, and the research finding and research conducted.

The research needed because it will inform about situation in case study and the project. So, this is a part of critical component.

You question is incomplete, but most probably your full question was

Imagine a designer finishes a client project and wants to write a case study. They draft a case study that describes their role in the project, the goal of the project, and the target user. They also add sketches and wireframes, and their polished designs. What critical components are missing from the case study?

a. The key challenges or constraints the designer faced

b. The designer’s learnings during the design process

c. The designer’s thoughts on how the design could be improved

d. The research conducted and research findings

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write a for loop that iterates from 1 to numbersamples to double any element's value in datasamples that is less than minvalue. ex: if minval

Answers

The provided code is written in MATLAB.

# double the data in sample if it is less than minValue

function data_Samples = Adjust_MinValue(numberOfSamples, user_Samples, minValue)

data_Samples = user_Samples;

%for loop

for k = 1:numberOfSamples

%checking if data_Samples value at index,k

%is less than minValue

if data_Samples(k)<minValue

%set double of data_Samples value

data_Samples(k)= 2*data_Samples(k);

end

end

end

# End

What is MATLAB ?

MathWorks' MATLAB is a proprietary multi-paradigm programming language and numeric computing environment. MATLAB supports matrix manipulation, function and data plotting, algorithm implementation, user interface creation, and interfacing with programmes written in other languages.

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Zoey wants to change the margins in her word document but is not sure how to do it. What tab should she select to find directions?.

Answers

Select (highlight) all of your text (control key + a); choose layout tab at the top of your screen,, choose margins and then choose the preset you prefer from the pull down menu.

which model for health information exchange, also known as the federated model, uses a record locator service that functions similar to an internet search?

Answers

The hybrid HIE (Health Information Exchange) approach, sometimes referred to as the federated model, provides a record locator service that works like an internet search and is used for the exchange of health information.

What is a federated approach for the exchange of health information?

The decentralized or federated model. The single data warehouse approach is completely disregarded in the decentralized or federated architecture for health information exchange. Healthcare providers have control over their own patient information because data is kept at the source.

What is the hybrid model for the exchange of health information?

hybrid design a hybrid approach of health information exchange that combines the features of a record locator service with a centralized data repository.

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you are concerned with the security of a site you use and run a vulnerability test against it. the test reveals a security threat. is this hacking?

Answers

Hacking is the term used to describe the unauthorized or excessive use of computer resources.

Is the common word for malware that infects a user's computer, gathers sensitive data, and then delivers that data to an attacker?

One of the most prevalent risks to internet users is spyware. Once installed, it keeps track of login details, spies on confidential data, and monitors internet activities. Spyware's main objective is typically to collect passwords, banking information, and credit card numbers.

How did the attackers on the target receive the information they took from the target?

In November 2013, the criminals used credentials from a third-party vendor that had been stolen to access Target servers. They then put malware in place to collect information such as names, email addresses, credit card numbers, and more.

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Write a program that computes an integer's checksum. To compute the checksum, break the integer into its constituent digits and, working from right to left, doubling every second digit. If the product results in a number with two digits, treat those two digits independently. Then, sum all the digits for the final checksum. For example, 1496 has a checksum of 21. We compute this by first breaking 1496 into constituents and doubling the ever second digit => 6, 18, 4, 2. Then, the individual digits are summed as 6 + (1 + 8) + 4 + 2 = 21.

Answers

Answer:

def checksum(num):

   total = 0

   count = 0

   while num > 0:

       digit = num % 10

       count += 1

       if count % 2 == 0:

           digit *= 2

           while digit > 0:

               total += digit % 10

               digit //= 10

       else:

           total += digit

       num //= 10

   return total

   

num = int(input("Enter an integer: "))

print("Checksum:", checksum(num))

if there’s anything to amend, please let me know. thank you!

Issue: How to fix "Application failed to start because no Qt platform plugin could be initialized" error in Windows?Recently, after a Windows update, I was unable to get OneDrive to work. Whenever my PC boots, I receive an error "Application failed to start because no Qt platform plugin could be initialized." Any advice on how to deal with this issue?

Answers

The Qt Platform Abstraction (QPA) layer of Qt 5 must be implemented by a plugin in order for all Qt GUI apps to run. The platform plugin for Windows is known as qwindows.dll.

How to deal with this issue?

Replacing the Qt files in the destination folder is the first and most effective solution. Let's use Python as an illustration. Follow these steps to do that:

Step 1: Open the File Explorer by pressing Win + E, choosing This PC, typing pyqt5 tools into the search box, and pressing Enter.

Step 2: After the search is finished, right-click the pyqt5 tools folder and choose Open folder location.

Step 3: Next, open the Plugin folder, right-click the platforms folder, and choose Copy. Then, navigate to the folder path "PyQt5 > Qt > plugins."

Step 4: Navigate to pyqt5 tools > Qt > bin in the site-packages folder that you initially opened.

5. Select paste by right-clicking any empty area inside the bin directory. then verify it

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You want to copy a formula in a cell down the column into multiple other cells. What would be the best tool for the job?

answer choices
Spelling Checker
Find and Replace
Cut and Paste
AutoFill

Answers

You wish to move a formula from one cell in a column to several others. The ideal tool for both the job would be AutoFill.

What is a class 9 cell computer?

Each row and then a column come together to form a cell. An address that comprises of the data type and row number is used to identify a cell. For instance, its first cell is labeled as A1, indicating that it is located where row 1 and column A converge.

What does a cell range mean?

In Excel, a cell range is a group of selected cells. It can be used as a formula reference. With the connection of the top half cell serving as the range's minimum value and the ref of lower-right cell serving as the range's maximum value, this is specified in a spreadsheet.

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you have been given logs for a system that was identified as having unusual network activity. after analyzing the logs, you determined that there were many failed login attempts by multiple usernames, most of which were invalid accounts. there were no log entries for successful logins from external addresses, and the system integrity logs indicate that no files were tampered with. which incident type best describes this situation?

Answers

Brute Force Attack is the incident type best describes this situation.

What is  Brute Force Attack? A Brute Force Attack is a type of cyberattack that involves attempting to gain access to a secure system by trying every possible combination of characters and/or words until the correct one is discovered. This attack is often used to gain access to an account or to decrypt an encrypted message. The attacker usually uses automated software to launch the attack and can try thousands of combinations in a short amount of time. The attack can be successful if the attacker knows some information about the target system such as the type of encryption used or the length of the password. Brute Force Attack can be difficult to protect against since the attacker has access to a wide range of possible combinations. The best way to protect against a Brute Force attack is to use strong passwords, limit the number of failed login attempts, and employ two-factor authentication.    

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What it job is in charge of a software application development team that develops, designs, and tests software applications?.

Answers

Answer:

Head Applications Developers

For a Python program that reads every third integer in a list, which arguments of the range function should you specify?

A start, a stop, and a step argument
A start and a stop argument
No arguments
One stop argument

Answers

Answer:

A start, a stop, and a step argument

Explanation:

the range function takes three arguments: a start, a stop, and a step.

Which it job designs parts of applications that complies with the head application developer’s design principles?.

Answers

Answer:

application architects

Explanation:

WILL GIVE BRAINLY IF RIGHT When should a double equal sign (==) be used?


to set the value of a decimal variable


to set the value of a float variable


to check whether two pieces of data are actually equal


to indicate greater than or less than

Answers

The double equal sign (==) should be used to check whether two pieces of data are actually equal. It should not be used to set the value of a variable. Instead, a single equal sign (=) should be used to set the value of a variable. The double equal sign is used in programming languages to perform a comparison between two values and determine if they are equal. For example, you might use the double equal sign to check if a user's input matches a certain value, or to compare the value of one variable to another.

Double equal sign(==) is used to check whether two pieces of data are actually equal. It is another form of compareTo(), used more in if-else loops.

after seizing a telephone, it occurs to you that cohorts of the suspect may hack into the phone and wipe it clean before you can examine it back at the lab. you don't have anything in which to store the phone which would block incoming signals, and because the phone is password-encoded, you need to keep it running. what else might you do to prevent this from happening? group of answer choices

Answers

Could you do something to stop this ? Change the phone's mode to airplane.

What takes place if a police investigation results in the seizure of your phone?

The phone itself may be kept for the duration of the if it contains evidence rather than merely the data on it. After the pertinent data has been copied, the phone will likely be returned if the authorities are just interested in what is on it. Certain steps must be taken after your phone has been confiscated.

What should you do if you suspect that your phone has been ?

What to do if you believe your phone has been is described here. You should seek for any that you don't recall downloading as your initial step.

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an unhappy systems administrator installed malware that attacked after a timed event, rather than when it was installed. what type of malware does this describe?

Answers

It describes a logic bomb type of malware.

What is a Malware?

Malware is any software intentionally designed to cause disruption to a computer, server, client, or computer network, leak private information, gain unauthorized access to information or systems, deprive access to information, or which unknowingly interferes with the user's computer security and privacy. By contrast, software that causes harm due to some deficiency is typically described as a software bug. Malware poses serious problems to individuals and businesses on the Internet. According to Symantec's 2018 Internet Security Threat Report (ISTR), malware variants number has increased to 669,947,865 in 2017, which is twice as many malware variants as in 2016. Cybercrime, which includes malware attacks as well as other crimes committed by computer, was predicted to cost the world economy $6 trillion USD in 2021, and is increasing at a rate of 15% per year.

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what do you call a large organization, structured hierarchically, that performs specialized functions?

Answers

A bureaucracy is a large organization, structured hierarchically, that performs specialized functions.

Define bureaucracy?

Bureaucracy is a system of government in which most of the important decisions are made by state officials rather than by elected representatives. It is characterized by its hierarchical structure, detailed rules and regulations, and strict enforcement of procedures. In a bureaucracy, decisions are made based on a set of predetermined rules and procedures, and the focus is on efficiency and uniformity. Bureaucracies are often seen as impersonal and oppressive, since they are designed to ensure that decisions are made in a consistent and standardized way. However, they can also be beneficial to citizens, providing a reliable and efficient way to manage public resources and services. The main functions of a bureaucracy include: formulating policies, developing regulations, providing administrative support, setting standards, supervising activities, and monitoring compliance. It can also be responsible for providing services to citizens, such as social welfare and education, and maintaining public order.

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If xy(-z) = 150, find the values of (-2x)(2y)(-4z)WILL GIVE BRAINLIEST IF THE ANSWER IS CORRECT! HELP PLSGraph -8x - y = 8. what is the value of this expression5 (9/12 - 1/4) + 0.5 single-cell rna-sequencing reveals widespread personalized, context-specific gene expression regulation in immune cells What is the difference between a formal and informal proof? (Please give explanations)A) A formal proof uses a table or a list of steps, whereas an informal proof uses paragraphs.B) A formal proof provides the reasons for steps, whereas an informal proof does not.C) A formal proof is much shorter, whereas an informal proof is longer.D) A formal proof uses equations, whereas an informal proof only uses text. Drag each label to the appropriate position to identify whether the given vessel directly arises from the aorta or from another (other) named vessel. Aorta Other Read the last paragraph of "Among Free Men.""Among free men," said Abraham Lincoln, "there can be no successful appeal from the ballot to the bullet; and those who take such appeal are sure to lose their cause and pay the costs." Which rhetorical device does Lincoln use?alliteration, in the phrase "ballot to the bullet"antithesis, in suggesting one could both "lose" and "pay"metonymy, in the use of "ballot" to represent votingallusion, in the reference to "free men" A doctor may use a(n)_____ to help diagnose an illness. A. clone B. expert system C. neural network D. knowledge base In paragraph 18, the author describes the road usingantonyms: "unknown, and yet so familiar." roller coasters are popular attractions at amusement parks. a cart on a roller coaster approaches the highest point on the coaster. as the cart reaches the top, it slows down. Which system of linear inequalities is graphed? x -2y -x-3x< -3y< -x-2x A 2,500-kilogram roller coaster car is just reaching the bottom of a 30.00-meter hill. Assuming friction is 0, what are the potential energy (PE) and kinetic energy (KE) of the car at a height of 0 meters?PE = 367,500 J; KE = 367,500 J.PE = 0 J; KE = 735,000 J.PE = 735,000 J; KE = 0 J.PE = 735,000 J; KE = 735,000 J. if the pressure on a gas increased then its a volume will decrease because gas molecules will pushed closer together did the data support the hypothesisjustify your answer what major part of a typical food chain is more or less missing from the galapagos islands A glowing beam of electric current is deflected away from a negatively charged object. What does this tell us about electricity?It is densely packed and has a positive chargeIt is made of negatively charged particles.It is mostly empty space.It is composed of a positive charge that is spread out with negative charges scattered about within it. Which cash crop was the most significant in ninteenth century texas? Choose the options that best improves the underlined portion of the sentence A) no changeB)herC)theirD)our Warm Up:When designing a survey, what is one of the first things you need to know? What would you ask yourself? g the exchange rate that equates the quantities of currecnysupplued ad dermanded in the foreign exhange market is called the exchange market When magnesium reacts with copper sulfate solution, the ionic equation is:Mg(s) + Cu (aq) Mg (aq) + Cu(s)-Which species has lost electrons?Which species has gained electrons?Which species is oxidised and which is reduced?(4 marks)