if there is an apple logo on my computer what operating system does it run on

Answers

Answer 1

Answer:Mac OS if there is a apple logo

Answer 2
Mac OS to run off of the apple logo

Related Questions

Start with a population of 500 organisms, a growth rate of 2, and a growth period to achieve this rate of 6 hours. Assuming that none of the organisms die, this would imply that this population would double in size every 6 hours. Thus, after allowing 6 hours for growth, we would have 1000 organisms, and after 12 hours, we would have 2000 organisms.


Write a program that takes these inputs and displays a prediction of the total population.


MY PROGRAM:

organisms=int(input("Enter the initial number of organisms:"))

growth=float(input("Enter the rate of growth [a real number > 1]:"))

numHours=int(input("Enter the number of hours to achieve the rate of growth:"))

totalHours=int(input("Enter the total hours of growth:"))

population = organisms

hours=1

while numHours < totalHours:

population *= growth

hours += numHours

if hours >= totalHours:

break

print(" The total population is ", population)

My program gives the correct answer for the original problems numbers, but when I run it through our test case checker it comes back as 3/4 correct.. the problem test case being [organisms 7, growth rate 7, growth period 7, total hours 7]... can't see where I'm going wrong...

Answers

Answer:

It looks like there are a few issues with your program.

First, the line hours += numHours should be hours += 1. This is because you want to increment the hours variable by 1 each time through the loop, not by the number of hours required to achieve the growth rate.

Second, you are only multiplying the population by the growth rate once per iteration of the loop, but you should be doing it every time hours is less than or equal to totalHours. You can fix this by moving the population *= growth line inside the loop's if statement, like this:

while numHours < totalHours:

   if hours <= totalHours:

       population *= growth

   hours += 1

   if hours >= totalHours:

       break

Finally, you are using the variable numHours in your while loop condition, but it should be hours. You should change while numHours < totalHours: to while hours < totalHours:.

With these changes, your program should work correctly for the test case you provided. Here is the modified version of your program:

organisms=int(input("Enter the initial number of organisms:"))

growth=float(input("Enter the rate of growth [a real number > 1]:"))

numHours=int(input("Enter the number of hours to achieve the rate of growth:"))

totalHours=int(input("Enter the total hours of growth:"))

population = organisms

Needing some help with a code, any help would be appreciate for C++

Write a program that has the following functions:
- int* ShiftByOne(int[], int);
This function accepts an int array and the array’s size as arguments. The
function should shift all values by 1. So, the 1st element of the array should
be moved to the 2nd position, 2nd element to the 3rd position, and so on so
forth. Last item should be moved to the 1st position. The function should
modify the input array in place and return a pointer to the input array.
- Int* GetMax(int[], int);
This function accepts an int array and the array’s size as arguments. The
function should return the memory address of the maximum value found in
the array.
- unsigned int GetSize(char[]);
This function accepts a character array (C-String) and should return the size
of the array.

Answers

The program that has the following functions is given below:

The Program

#include <algorithm>

int* ShiftByOne(int array[], int size) {

   int temp = array[size - 1];

   for (int i = size - 1; i > 0; i--) {

       array[i] = array[i - 1];

   }

   array[0] = temp;

   return array;

}

int* GetMax(int array[], int size) {

   int max_val = *std::max_element(array, array + size);

   return &max_val;

}

unsigned int GetSize(char str[]) {

   unsigned int size = 0;

   for (int i = 0; str[i] != '\0'; i++) {

      size++;

   }

   return size;

}

Note: The function ShiftByOne() modifies the input array in place and return a pointer to the input array.

The function GetMax() returns the memory address of the maximum value found in the array.

The function GetSize() returns the size of the array.

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This type of network may not be connected to other networks.


A) LAN
B) MAN
C) WAN

Answers

Answer:

LAN

Explanation:

brainliest?:(

Answer:

A) LAN (Local Area Network)

What is the main difference between a goal and an objective?



A goal is a broad-based projection, and an objective is a set of benchmarks.

A goal is a broad-based projection, and an objective is a specific accomplishment.

A goal is a broad-based projection, and an objective is a set of mini-goals.

A goal is a measurable projection, and an objective is a specific accomplishment

Answers

A goal is a desired outcome, but an objective is a targeted action that may be completed quickly and is frequently tied to a goal.

Give an example of each and explain the difference between an objective and a goal.

Objectives are specified in terms of measurable, tangible targets, whereas goals can be immaterial and unmeasurable. For instance, while "offering great customer service" is an intangible goal, "reducing the client wait time to one minute" is a tangible goal that contributes to the achievement of the primary goal.

What distinguishes educational goals from objectives?

Learning In contrast to aims, which convey a broad declaration of intent, objectives are specific, distinct intentions of student performance. Goals cannot be measured or seen; however, objectives can.

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Describe what social engineering is and explain its existence and prevalence.
Explain why SE is an important part of an information technology security course.
Perform statistical research in the social engineering area providing the following: (1) Describe the current percentage of cyber attacks relying on social engineering and the percentage of attacks from both internal and externa sources; and (2) Describe how these percentages impact the current corporate social engineering incident response effort.
Discuss employee and management responsibilities with regard to information security and combating SE. Make sure your work clarifies your opinion as to who carries more responsibility for preventing SE-the employees or management. Provide examples to back up your statements.

Answers

Social engineering is a tactic used by attackers to manipulate individuals into divulging sensitive information or performing actions that may be harmful to the organization.

Social engineering attacks exploit human psychology, emotions, and trust to trick people into revealing sensitive information or performing actions that they otherwise wouldn't. The attacks can take many forms, such as phishing emails, phone scams, pretexting, and baiting.

What is social engineering?

The prevalence of social engineering attacks has increased in recent years, as attackers have become more sophisticated and creative in their methods.

According to the Verizon Data Breach Investigations Report (DBIR) in 2020, social engineering is used in 84% of successful cyber attacks and the most common form of social engineering is phishing. It is also reported that around 30% of phishing messages are opened and 12% of recipients click on the malicious link.

When it comes to combating social engineering, both employees and management carry some level of responsibility. Employees are the first line of defense and play a vital role in protecting the organization's sensitive information. They should be educated and trained on how to identify and avoid social engineering attacks. Management, on the other hand, is

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Next, you begin to clean your data. When you check out the column headings in your data frame you notice that the first column is named Company...Maker.if.known. (Note: The period after known is part of the variable name.) For the sake of clarity and consistency, you decide to rename this column Company (without a period at the end).

Assume the first part of your code chunk is:

flavors_df %>%

What code chunk do you add to change the column name?

Answers

Answer:

You can use the rename function to change the column name. Here is an example code chunk:

flavors_df %>%

rename(Company = Company...Maker.if.known.)

This will rename the Company...Maker.if.known. column to Company. Note that the old column name is surrounded by backticks () because it contains a period, which is a special character in R. The new column name, Company`, does not need to be surrounded by backticks because it does not contain any special characters.

Explanation:

Create a program for the given problems using one-dimensional array. Program to identify the highest value in the given numbers.​

Answers

Answer:

Explanation:

Here's one way you could write a C program to identify the highest value in a given set of numbers using a one-dimensional array:

Copy code

#include <stdio.h>

int main() {

   int nums[10]; // Declare an array of 10 integers

   int i, max;

   printf("Enter 10 numbers: ");

   for (i = 0; i < 10; i++) {

       scanf("%d", &nums[i]); // Read in the numbers

   }

   max = nums[0]; // Initialize max to the first number in the array

   for (i = 1; i < 10; i++) {

       if (nums[i] > max) { // Compare each number to the current max

           max = nums[i];  // If a number is larger, update the max

       }

   }

   printf("The highest value is: %d", max);

   return 0;

}

Which company gave Apple its big break in the business market?

Commodore Business Machines
Software Arts
Tandy Corporation
Microsoft

Answers

Answer:

Microsoft

Explanation: I’m not a computer fanatic, but everybody should know this. And if anything else is the answer, then that’s because it would’ve been in the text that I DON’T have.

Answer: software arts

Explanation:

i just did it

You are a member of Future Business Leaders of America, and a local retirement community has asked if you and
your other members could come to their facility to help teach the residents that live there how to use technology
so that they can communicate with their grandchildren. This is an example of
networking
a competition
community service
a class assignment

Answers

Senior executives typically invite network members to participate in the planning and implementation of the change process at the first meeting. There is a matter of minutes, and Meetings are scheduled frequently.

Which three strategies would you recommend to make your company a fantastic place to work?

Fantastic lines of communication between management and employees. a feeling of belonging within the crew. allowing workers the freedom to develop their skills. a tradition of ongoing development.

What are some tactics you may employ to promote innovation and creativity within a company?

Ask your staff to present their ideas if you want to encourage creativity and innovation. You might also develop a procedure to submit them. Request that each employee presents an idea within a set deadline, and offer incentives to encourage discussion.

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Can you incorporate open-source code from a github forum into IP tool?

Answers

Answer:

No

Explanation:

Answer: No, Info does not allow the use of open-source components in proprietary software he contracts.

Try it
Drag and drop each example under the appropriate heading.
taking breaks
reading in a crowded room
having resources nearby
cramming at the last minute
getting plenty of rest
starting your homework late at night
Intro
Good Study Habits
Bad Study Habits
Done

Answers

Bad habits include reading in a crowded room, starting your schoolwork late at night, and cramming right before the exam. Good habits include taking breaks, having resources close by, and getting lots of rest.

What are some poor study habits?

Being uncoordinated. Being disorganized will simply make studying much more difficult because there are so many things to do and think about. Don't merely jot down notes and post reminders in random locations.

Why do I lose track of what I learn?

If a student stays up all night studying for the test, they usually forget the material during it. The ability of the brain to retain information increases with regular study schedules and thoughtful revision, and the material is ingrained much more deeply.

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A sequential circuit has one flip-flop Q, two inputs X and Y, and one output S. The circuit consists of a D flip-flop with S as its output and logic implementing the function D = X ⊕ Y ⊕ S with D as the input to the D flip-flop. Derive the state table and state dia- gram of the sequential circuit.

Answers

To derive the state table and state diagram of the sequential circuit, we first need to determine the possible states of the flip-flop Q, and the next states based on the input values X and Y and the current state of Q.

The state table for the sequential circuit would look like this:

Q(t) X Y Q(t+1) S

0 0 0 0 0

0 0 1 1 1

0 1 0 1 1

0 1 1 0 0

1 0 0 1 1

1 0 1 0 0

1 1 0 0 0

1 1 1 1 1

The state diagram for the sequential circuit would look like this:

 S=0                                                                 S=1

   ------------                                                      ------------

  | 0 |   | 1 |                                                    | 1 |   | 0 |

   ------------                                                      ------------

  |   |   |   |                                                    |   |   |   |

   ------------                                                      ------------

  |   |   |   |                                                    |   |   |   |

   ------------                                                      ------------

  |   |   |   |                                                    |   |   |   |

   

What is  flip-flop Q?

A flip-flop is a circuit that is used to store binary data in digital electronic systems. It is a type of latch circuit that is used as a memory element in digital logic circuits. Flip-flops can be either positive edge-triggered or negative edge-triggered, and can be either level-sensitive or edge-sensitive. The most common types of flip-flops are SR flip-flops, JK flip-flops and D flip-flops.

In this case, Q is a flip-flop that is used as a memory element in the sequential circuit. It stores the current state of the circuit and is used in the logic implementation of the circuit's function. The output of this flip-flop is used as an input to the next state of the circuit, and it's also the output of the circuit.

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Which company has the highest number of operating system versions on the market?

Linux

Microsoft

Apple

IBM

Answers

Microsoft has the highest number of operating system versions on the market, including Windows 11, Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, Windows 2000, Windows NT, Windows ME, Windows 98, Windows 95, Windows 3.1, Windows 3.0, Windows 2.0, and Windows 1.0.

The correct answer is Microsoft

solve the MRS y,x = 12 mean? for constant mariginal utility?

Answers

answer

The MRS y,x = 12 means that the ratio of marginal utilities between two goods (y and x) is 12. This means that for every 12 units of good y the consumer will give up 1 unit of good x. This holds true if the consumer has constant marginal utility.

Code to be written in Python
Will award brainliest automatically if correct!

Suppose that you have a list of numbers, and you need to normalize the list, i.e., the sum of all numbers in the list is equal to 1.

Tam came out with an implementation:

def normalize(lst):
s = sum(lst)
return list(map(lambda v: v / s, lst))


This code works correctly for normalize([1, 2, 5, 4]) but fails for normalize([1, 2, -7, 4]). What causes the second test case to fail?

Find out the error message and keep the list as it is when the error occurs by simply return the list. So without modifying the normalize function, implement this strategy in the safe_normalize function. Complete safe_normalize. You may assume that the normalize function has already been defined for you.

def safe_normalize(lst):
# handle the error
return normalize(lst)

Test Cases:

safe_normalize([1, 2, 2, 3]) [0.125, 0.25, 0.25, 0.375]
safe_normalize([1, 2, -5, 2]) [1, 2, -5, 2]

Answers

PYTHON

Here is an implementation of the safe_normalize function that catches the error and returns the original list if an error occurs:

def safe_normalize(lst):

try:

return normalize(lst)

except ZeroDivisionError:

return lst

This function calls the normalize function, which takes a list as input and returns a normalized list. However, if an error occurs (in this case, a ZeroDivisionError), the function will catch the error and return the original list instead.

To test the safe_normalize function, you can use the following test cases:

print(safe_normalize([1, 2, 2, 3])) # Expected output: [0.125, 0.25, 0.25, 0.375]

print(safe_normalize([1, 2, -5, 2])) # Expected output: [1, 2, -5, 2]

The first test case should return the normalized list, while the second test case should return the original list, since the normalize function would fail with a ZeroDivisionError if passed a list with a negative sum.

Hope This Helps You!

To protect your online privacy, you should not?
A. be careful when talking to strangers online.
B. use an antivirus software.
C. download updates for mobile devices and computers.
D. use the same password for every account.

Answers

Answer:

Your answer to this will be D) Use the same password for every account.

Explanation:

This is the only option you should not do. If someone gets access or hacks into one of your accounts, and all accounts to anything are the same password they will have all of your accounts.

Question 2
An example of something that operates at the application layer is:

Answers

Answer:

HTTP, FTP, SMTP- These are protocols at the application layer

Explanation:

In the acronym, MS-DOS, DOS stands for which option?

Digital Operating System
Disk Operating System
Dynamic Operating System
Distributed Operating System

Answers

Answer:

Disk Operating System

Explanation:

How BFS takes more memory than DFS?

Answers

Answer:

The BFS have to track of all nodes on the same level

protocol layering can be found in many aspect of our lives such as air travelling .imagine you make a round trip to spend some time on vacation at a resort .you need to go through some processes at your city airport before flying .you also need to go through some processes when you arrive at resort airport .show the protocol layering for round trip using some layers such as baggage checking/claiming,boarding/unboard,takeoff/landing.​

Answers

Answer:

Baggage checking/claiming:

Check in at the city airport and check your baggage

Claim your baggage at the resort airport


Boarding/unboarding:

Board the plane at the city airport

Unboard the plane at the resort airport


Takeoff/landing:

Takeoff from the city airport

Land at the resort airport

Takeoff from the resort airport

Land at the city airport

Accenture is one of several hundred companies that has signed on to the United Nations Global Compact (UNGC) Business Ambition pledge.

Answers

Answer: True

Explanation:
Accenture is one of several hundred companies that has signed on to the United Nations Global Compact (UNGC) Business Ambition pledge. The UNGC is a voluntary initiative that encourages businesses to align their operations and strategies with ten universally accepted principles in the areas of human rights, labor, environment, and anti-corruption. The Business Ambition pledge is a component of the UNGC that invites businesses to set ambitious, science-based targets to reduce greenhouse gas emissions in line with the goals of the Paris Agreement. Accenture is one of many companies that have committed to this pledge and to taking action to combat climate change and support sustainable development.

Hey tell me more about your service. I have a school assignment 150 questions and answers on cyber security,how can I get it done?

Answers

Answer:

Explanation:

I have knowledge in a wide range of topics and I can help you with your school assignment by answering questions on cyber security.

However, I want to make sure that you understand that completing a 150 question assignment on cyber security can be time-consuming and it's also important that you understand the material well in order to do well on exams and to apply the knowledge in real-world situations.

It would be beneficial to you if you try to work on the assignment by yourself first, then use me as a resource to clarify any doubts or to check your answers. That way you'll have a deeper understanding of the material and the assignment will be more beneficial to you in the long run.

Please also note that it is important to always check with your teacher or professor to ensure that getting assistance from an AI model is in line with your school's academic policies.

Please let me know if there's anything specific you would like help with and I'll do my best to assist you.

In what ways does a computer network make setting appointments easier?


A) by providing a common calendar
B) by reassigning workloads to enable attendance
C) by sending out invitations
D) by telephoning those involved
E) by sending electronic reminders

Answers

The best option is A) by providing a common calendar. A common calendar can be used to check availability and schedule appointments, making the process of setting appointments easier.

However...

All of the options (A, C, D, and E) could potentially make setting appointments easier on a computer network.

A) A common calendar can be used to check availability and schedule appointments.

B) Workloads could be reassigned to enable attendance at appointments, but this is not directly related to the use of a computer network.

C) Invitations to appointments can be sent electronically through the network.

D) Telephone calls can be made through the network.

E) Electronic reminders can be sent through the network to help ensure that appointments are not forgotten.

write flow chart pseudocode and algorithm for a computation that perform balance,interest, withdrawal,in bank for Ethiopia?​

Answers

Answer:

Flowchart:

Start

Input customer information (name, account number, etc.)

Calculate balance

Calculate interest

Prompt user to enter withdrawal amount

Calculate new balance

Print new balance

End

Pseudocode:

START

// Declare variables

DECLARE customerName

DECLARE customerAccountNumber

DECLARE customerBalance

DECLARE customerInterest

DECLARE withdrawalAmount

// Get customer information

INPUT customerName

INPUT customerAccountNumber

// Calculate balance

SET customerBalance = customerAccountNumber * customerInterest

// Calculate interest

SET customerInterest = customerBalance * 0.05

// Prompt user to enter withdrawal amount

INPUT withdrawalAmount

// Calculate new balance

SET customerBalance = customerBalance - withdrawalAmount

// Print new balance

PRINT customerBalance

END

Explanation:

Directions :: Write a Ship class. Ship will have x, y, and speed properties. x, y, and speed are integer numbers. You must provide 3 constructors, an equals, and a toString for class Ship.



One constructor must be a default.

One constructor must be an x and y only constructor.

One constructor must be an x, y, and speed constructor.

Provide all accessor and mutator methods needed to complete the class.

Add a increaseSpeed method to make the Ship speed up according to a parameter passed in.

Provide an equals method to determine if 2 Ships are the same(i.e. in the same location).

You also must provide a toString() method.

The toString() should return the x, y, and speed of the Ship.



In order to test your newly created class, you must create another class called ShipRunner. There you will code in the main method and create at least 2 Ship objects (although you can create more if you like), using the constructors you created in the Ship class. Then you will print them out using the toString method and compare them with the equals method.



I'm trying to make an equals method I just don't know how to​

Answers

Answer: Assuming this is in the java language.. the equals() would be

Explanation:

public boolean equals(Object o){

   if(o == this){

        return true;

   }

   if (!(o instanceof Ship)) {

     return false;

   }

   Ship s = (Ship) o;

   return s.x == this.x && s.y == this.y && s.speed == this.speed;

 }

Grayson is creating a program to keep track of how much money he earns and spends each week.he earns and spends each week. He wants to know if he has enough for ice cream? What data should he use to store his answer

Answers

Since Grayson uses a program that allows him to keep track of how much money he earns and spends each week. The type of data that will be used to give him the answer to the question is option A: "Boolean".

What is the program  about?

A Boolean variable can hold only two values: true or false.

He can use a conditional statement to check if the amount of money he has left over after subtracting his expenses from his earnings is greater than or equal to the cost of the ice cream. If it is, he can set the Boolean variable to "True", indicating that he has enough money for ice cream. If it is not, he can set the Boolean variable to "False", indicating that he does not have enough money.

Therefore, Grayson can compare the value of his remaining money to the cost of the ice cream, if the remaining money is greater than or equal to $4, he can set the Boolean variable to "True" which means he has enough money.

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See full question below

Grayson uses a program that allows him to keep track of how much money he earns and spends each week. Which type of data will be used to give him the answer to the following question?

"Do I have $4 to buy ice cream?"

Boolean

Images

Numbers

Text

What is the difference between a baseline and an objective?

A baseline is a start, and an objective is an ending.

A baseline is measurable, and an objective is not measurable.

A baseline is a start, and an objective shows progression.

A baseline is a benchmark, and an objective is an ending.

Answers

The difference between a baseline and an objective is a baseline is a start, and an objective is an ending. Therefore, option A is correct.

What is the objective of baseline?

Regardless of the study topic, a baseline study is a descriptive cross-sectional survey that primarily offers quantitative data on the current condition of a specific situation in a given population. It seeks to quantify how various variables are distributed over time within a study population.

A baseline is a constant point of comparison that is employed in comparison studies. In business, a project's or product's success is frequently evaluated in comparison to a baseline figure for expenses, sales, or any other number of factors. A project may go over or under its predetermined benchmark.

Thus, option A is correct.

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Code to be written in python

A deferred annuity is an annuity which delays its payouts. This means that the payouts do not start until after a certain duration. Notice that a deferred annuity is just a deposit at the start, followed by an annuity. Your task is to define a Higher-order Function that returns a function that takes in a given interest rate and outputs the amount of money that is left in a deferred annuity.

Define a function new_balance(principal, gap, payout, duration) that returns a single-parameter function which takes in a monthly interest rate and outputs the balance in a deferred annuity. gap is the duration in months before the first payment, payout is monthly and duration is just the total number of payouts.

Hint: Note that duration specifies the number of payouts after the deferment, and not the total duration of the deferred annuity.

def new_balance(principal, gap, payout, duration):
# Complete the function
return


# e.g.
# test_balance = new_balance(1000, 2, 100, 2)
# result = test_balance(0.1)

Test Case:
new_balance(1000, 2, 100, 2)(0.1) 1121.0

Answers

Answer:

def new_balance(principal, gap, payout, duration):

   def calculate_balance(interest_rate):

       balance = principal

       for i in range(gap):

           balance *= (1 + interest_rate/12)

       for i in range(duration):

           balance *= (1 + interest_rate/12)

           balance -= payout

       return balance

   return calculate_balance

Explanation:

Answer:

def new_balance(principal, gap, payout, duration):

   # convert monetary amounts to cents

   principal_cents = principal * 100

   payout_cents = payout * 100

   

   def balance(rate):

       # calculate the interest earned during the deferment period in cents

       interest_cents = principal_cents * (1 + rate) ** gap - principal_cents

       # calculate the balance after the first payout in cents

       balance_cents = interest_cents + principal_cents - payout_cents

       # loop through the remaining payouts, calculating the balance after each one in cents

       for i in range(duration - 1):

           balance_cents = balance_cents * (1 + rate) - payout_cents

       # convert the balance back to dollars and round it to the nearest cent

       balance_dollars = round(balance_cents / 100)

       return balance_dollars

   return balance

test_balance = new_balance(1000, 2, 100, 2)

result = test_balance(0.1)

print(float(result))

Which of the following devices can store large amounts of electricity, even when unplugged?
LCD monitor
DVD optical drive
CRT monitor
Hard disk drive

Answers

Even when unplugged, a CRT (Cathode Ray Tube) monitor can store a lot of electricity. The capacitors within CRT monitors can store enough power to be fatal, thus you should never open one.

What does CRT stand for?

An electron beam striking a phosphorescent surface creates images in a cathode-ray tube (CRT), a specialized vacuum tube. CRTs are typically used for desktop computer displays. The "picture tube" in a television receiver is comparable to the CRT in a computer display.

What characteristics does CRT have?

Flat screen, touch screen, anti-reflective coating, non-interlaced, industrial metal cabinet, and digital video input signal are typical features of CRT monitors. As opposed to the typically curved screen found in most CRT displays, the monitor's screen can be (almost) flat.

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Answer:

CRT monitor

Explanation:

A cathode ray tube (CRT) monitor can store large amounts of electricity, even when unplugged. You should never open a CRT monitor, as the capacitors within the CRT can store enough electricity to be lethal.

LCD monitors do not use large capacitors and are much safer to work on than CRT monitors (although the CCFL backlight has mercury vapor in it, which could be harmful if the tube is broken).

DVD optical drives and hard disk drives do not store electricity in sufficient quantity to be harmful.

what is primary key? List any two advantage of it.​

Answers

A primary key is a column or set of columns in a database table that is used to uniquely identify each row in the table. It is a fundamental element of database design, as it ensures that each row in a table can be uniquely identified and helps to enforce the integrity of the data.

There are several advantages to using a primary key in a database table:

Uniqueness: A primary key ensures that every row in a table has a unique identifier, which makes it easier to distinguish one row from another.
Data integrity: A primary key helps to ensure that the data in a table is accurate and consistent, as it can be used to enforce relationships between tables and prevent data inconsistencies.
Performance: A primary key can be used to optimize the performance of a database, as it can be used to quickly locate and retrieve specific rows of data.
Data security: A primary key can be used to secure sensitive data in a database, as it can be used to control access to specific rows of data.
A primary key is a column of set columns heft ref
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