Your company has 100TB of financial records that need to be stored for seven years by law. Experience has shown that any record more than one-year old is unlikely to be accessed. Which of the following storage plans meets these needs in the most cost efficient manner?
A. Store the data on Amazon Elastic Block Store (Amazon EBS) volumes attached to t2.micro instances.
B. Store the data on Amazon Simple Storage Service (Amazon S3) with lifecycle policies that change the storage class to Amazon Glacier after one year and delete the object after seven years.
C. Store the data in Amazon DynamoDB and run daily script to delete data older than seven years.
D. Store the data in Amazon Elastic MapReduce (Amazon EMR).

Out of the following options, Fannie Mae was created by Congress to operate a secondary mortgage market for conventional loans originally.

Fannie Mae is a government-sponsored enterprise that was established by Congress in 1938 to provide liquidity, stability, and affordability to the U.S. housing and mortgage markets. Fannie Mae operates in the secondary mortgage market and works with a network of mortgage lenders to buy and sell mortgages, thus facilitating home lending.

A secondary mortgage market refers to a market where mortgage lenders and investors buy and sell existing mortgages. It provides mortgage lenders with liquidity and helps to keep the mortgage market flowing.

The government-sponsored enterprises Fannie Mae and Freddie Mac are the two largest players in the secondary mortgage market for conventional loans.

Learn more about mortgages at:

https://brainly.com/question/16005345

#SPJ11

The three types of vulnerability identifiers found in the Qualys KnowledgeBase are B. Bugtraq ID, C. CVE ID, and D. QID.

Bugtraq ID is a vulnerability identifier that refers to vulnerabilities listed in the Bugtraq mailing list, which is a popular security vulnerability forum. CVE ID stands for Common Vulnerabilities and Exposures ID and is a unique identifier assigned to known vulnerabilities. QID, on the other hand, stands for Qualys ID and is a proprietary identifier used by Qualys to uniquely identify vulnerabilities within their vulnerability management system. These three identifiers play a crucial role in identifying and tracking vulnerabilities, allowing organizations to efficiently manage and remediate security issues.

Learn more about vulnerability management here:

https://brainly.com/question/3187197

#SPJ11

Search engine optimization (SEO) is the process of improving the quality and quantity of website traffic to a website or web page from search engines. It involves optimizing various aspects of a website to make it more visible and relevant to search engine algorithms, thereby increasing its organic (non-paid) search engine rankings.

In more detail, SEO encompasses a range of techniques and strategies aimed at improving a website's visibility and ranking in search engine results pages (SERPs). The goal is to attract targeted and relevant traffic from search engines, SEO involves both on-page and off-page optimization.

On-page optimization focuses on optimizing individual web pages by optimizing tags, headings, content, and internal linking. Off-page optimization involves building high-quality backlinks and promoting the website through social media, content marketing, and other strategies.

By implementing effective SEO practices, website owners can increase their chances of ranking higher in search engine results, which can lead to increased organic traffic and potential conversions. SEO is an ongoing process that requires continuous monitoring, analysis, and adjustment to keep up with search engine algorithm updates and industry trends.

learn more about Search engine optimization (SEO) here:

https://brainly.com/question/29582565

#SPJ11

Here is the answer to the given question:

Algorithm to Check Password Requirements: Define three Boolean variables for each of the password requirements (e.g., has_uppercase, has_number, has_length). Set all Boolean variables to False at the beginning of the program. Ask the user to input a password. Check the length of the password. If the password is less than eight characters long, set the has_length variable to False. Otherwise, set it to True. Loop through each character in the password. If the character is an uppercase letter, set the has_uppercase variable to True. If the character is a digit, set the has_number variable to True.If all Boolean variables are True, the password is valid. Otherwise, it is invalid.The implementation of the above algorithm in Python is given below:## Initialize Boolean variables.has_length = Falsehas_uppercase = Falsehas_number = False## Ask user for a password.password = input("Enter a password: ")## Check length of password.if len(password) >= 8:    has_length = True## Loop through each character in password.for char in password:    if char.isupper():        has_uppercase = True    elif char.isdigit():        has_number = True## Check if password is valid.if has_length and has_uppercase and has_number:    print("Valid password")else:    print("Invalid password")

Know more about  Boolean variables here:

https://brainly.com/question/13527907

#SPJ11

Document A is not a reliable source to understand what happened when Moctezuma met Cortés for various reasons.

For instance, Document A is a poem, and poetry is typically regarded as a form of artistic expression that often includes imaginative embellishments. In 200 words, we will explain why Document A is not a trustworthy source to comprehend what occurred when Moctezuma met Cortés.Document A is not a reliable source to comprehend the events that occurred when Moctezuma met Cortés for several reasons. For starters, Document A is a poem, and poetry is typically considered an art form that frequently includes imaginative embellishments. As a result, the author of the poem, who is unknown, might have added dramatic or fictionalized elements to the poem to make it more engaging to readers.Document A is also written from a subjective perspective, which might not provide an accurate portrayal of events. The author's personal views or experiences may have colored the account. Furthermore, the poem was not composed at the time of the events, which raises concerns about its accuracy.The poem's purpose is to recount Moctezuma's thoughts and sentiments during his meeting with Cortés, which may not be entirely accurate. Additionally, the poem does not provide a comprehensive account of the events leading up to the meeting. As a result, relying solely on Document A to understand what occurred when Moctezuma met Cortés may lead to a biased or incomplete understanding of the situation. Therefore, Document A should be viewed as one of many sources that provide an insight into the events surrounding the meeting of Moctezuma and Cortés.

To learn more about moctezuma:

https://brainly.com/question/18882212

#SPJ11

Here's the x86 assembly code for the given C++ program:```section .datavalue db '3', 0Ah, 0section .textglobal _main_main:mov dword [ebp-4], 10; ecx = 10.loop:mov eax, 4mov ebx, 1mov ecx, valuecall print_digcall print_spaceadd value, 3dec dword [ebp-4]jnz loopcall print_endcall system_exitprint_dig:push eaxpush ecxpush edxpush ebxmov edx, 1mov ecx, digitmov ebx, 1mov eax, 4int 80hpop ebxpop edxpop ecxpop eaxretprint_space:push eaxpush ecxpush edxpush ebxmov edx, space_lenmov ecx, spacemov ebx, 1mov eax, 4int 80hpop ebxpop edxpop ecxpop eaxretprint_end:push eaxpush ecxpush edxpush ebxmov edx, 1mov ecx, endlmov ebx, 1mov eax, 4int 80hpop ebxpop edxpop ecxpop eaxreboot:push eaxpush ecxpush edxpush ebxmov eax, 1int 80hpop ebxpop edxpop ecxpop eaxret```

The family of assembly languages known as "x86 assembly language" offers some degree of backward compatibility with CPUs dating all the way back to the Intel 8008 microprocessor, which was introduced in April 1972. It is used to create object code for processors in the x86 class.

Assembler is a low-level, machine-specific programming language. All assembly languages use mnemonics to encode the basic CPU instructions, or machine code, and x86 assembly is no different. Although they can be used for other purposes, assembly languages are most frequently employed for complex and time-sensitive applications like small real-time embedded systems, operating-system kernels, and device drivers. When converting a high-level programme into machine code, a compiler will occasionally generate assembly code as a stage in the process.

Know more about x86 assembly  here:

https://brainly.com/question/30453388

#SPJ11

Answer:

Sequencing is the sequential execution of operations, selection is the decision to execute one operation versus another operation (like a fork in the road), and iteration is repeating the same operations a certain number of times or until something is true.

Explanation:

The type of backup that ensures you capture a complete snapshot of everything that makes your computer run is the image backup.

An image backup is a complete copy of the contents of a hard drive, including the files that are required to run the operating system and any installed programs. This means that an image backup captures everything that makes your computer run, including the operating system, applications, configurations, and personal files.Image backup is different from other types of backups in that it creates an exact copy of the entire hard drive, rather than just copying selected files or folders. The backup software takes an image of the drive, compresses it, and stores it as a single file. An image backup makes it possible to restore an entire system in the event of a catastrophic failure or a malware attack.Image backups are typically created on a regular basis, such as once a week or once a month, depending on how frequently changes are made to the system. This ensures that you always have a recent backup of your system that you can use to restore your computer to its previous state if necessary. It is also important to store image backups on an external hard drive or another type of storage device that is separate from the computer being backed up. This helps to protect the backup from the same disasters that could affect the computer itself.

To know more about backup visit :-

https://brainly.com/question/32536502

#SPJ11

Answer:

Material systems developer typically combines the skills of a programmer with the multitasking expectations of developing 3 dimensional models of objects, enhancing the graphical effects.

The process described in the scenario, where Paul retrieves locally created, modified, or deleted files from the backup disk after a power outage, is commonly referred to as "data restoration" or "file recovery."

In the given scenario, Paul experienced a power outage while working on a company project. As a result, any changes or modifications made to the project during the three hours without power were lost. However, Paul remembered that Time Machine, a backup feature, stores backup copies of locally created, modified, or deleted files on the hard drive.

It involves recovering lost or corrupted data from a backup source, such as a backup disk or system. In this case, the Time Machine feature was used to restore the data.

Learn more about data on

https://brainly.com/question/26711803

#SPJ4

Answer:

The carrying capacity of an ecosystem, for example the Earth system, is the ability of an ecosystem to provide biological species for their existence; that is, the living environment is able to provide them with a habitat, sufficient food, water and other necessities for a longer period of time.

When the populations of different species living in an ecosystem increase, the pressure on the environment increases, partly due to intensive use. The population size decreases again when the population exceeds the carrying capacity, so that a natural equilibrium is maintained. This is due to a number of factors, depending on the species involved. Examples are insufficient space, sunlight and food.

Thus, given the current conditions of pollution, extinction of species and other environmental damage caused by humans on Earth, it can be said that we are about to exceed the limit of carrying capacity of the Earth, which would imply that this, through different natural forces, would seek to stabilize said overpopulation to return the environmental environment to a state of equilibrium.

To provide a sine wave as the input voltage using the function generator, follow the steps given below:

Step 1: First, connect the function generator to a power supply.

Step 2: Set the function generator's amplitude to the desired level using the amplitude knob.

Step 3: Next, set the frequency of the function generator using the frequency knob.

Step 4: Set the waveform shape to a sine wave by selecting the sine wave option.

Step 5: Finally, connect the output of the function generator to the input of the circuit you want to test or analyze.

The function y = sin x defines a sine wave as a geometric waveform that oscillates (moves up, down, or side to side) frequently. It is an s-shaped, smooth wave that oscillates above and below zero, to put it another way.

Know more about sine wave here:

https://brainly.com/question/32149687

#SPJ11

The solution to the provided problem can be given by following these steps:Step 1: First, we take the input of an integer that specifies the number of integers that follow.

#include
using namespace std;
void GetUserValues(vector& userValues) {
   int n;
   cin >> n;
   int temp;
   for(int i=0; i> temp;
       user Values. push_back(temp);
   }
}
void Output In ts Less Than Or Equal To Threshold(vector user Values, int upper Threshold) {
   for(int i=0; i user Values;
   Get User Values(user Values);
   int upper Threshold;
   c in >> upper Threshold;
   Output In ts Less Than Or Equal To Threshold(user Values, upper Threshold);
   return 0;
}

Note: This code uses two functions as required in the question prompt. The Get User Values() function takes a vector of integers as input and stores the input values in the vector. The Output In ts Less Than Or Equal To Threshold() function takes a vector of integers and an integer as input and outputs all integers in the vector that are less than or equal to the given integer.

To know more about solution visit:

https://brainly.com/question/1616939

#SPJ11

The authentication protocol can perform authentication, but does not require it, so that operating systems without password encryption capabilities can still connect to RAS is RADIUS

RADIUS is a well-known AAA protocol that allows centralized control of authentication, authorization, and accounting, facilitating enhanced access control.

Although RADIUS has the ability to authenticate through passwords, it also offers choices for alternate authentication methods like challenging response protocols, digital certificates, and one-time passwords (OTPs).

The adaptability of the system allows for connection to a RADIUS server through alternative methods of authentication even if the operating system doesn't have password encryption capabilities, ensuring secure access control in all situations.

Learn more about authentication protocol at: https://brainly.com/question/15875549

#SPJ4

Based on the information provided, the query to display the book number, book title, and subject for every book sorted by book number would be as follows:

SELECT BOOK_NUM, TITLE, Subject_of_Book

FROM YourTableName

ORDER BY BOOK_NUM

LIMIT 20;

Replace YourTableName with the actual name of the table containing the book information. Adjust the query accordingly based on your database schema.

This query retrieves the specified columns from the table named YourTableName and sorts the result based on the book number in ascending order. The LIMIT 20 clause ensures that only the first 20 rows are displayed.

Remember to replace YourTableName with the actual name of the table in your database that contains the book information. Additionally, adjust the column names (BOOK_NUM, TITLE, Subject_of_Book) if they differ in your table schema.

Executing this query will provide you with the book number, book title, and subject for each book, with the results sorted by the book number.

Learn more about query here:

https://brainly.com/question/29575174

#SPJ11

Answer:

21 % 4 is 24 modulus 4. The remainder you get when you divide 21 by 4. 21 divided by 4 is 5, remainder 1.

So, 21 % 4 = 1.

Answer:

Answered below

Explanation:

//Program is written in Java.

public void first three elements(int[] nums){

int I;

//Check if array has up to three elements

if(nums.length > 3){

for(I = 0; I < nums.length; I++){

while (I < 3){

System.out.println(nums [I]);

}

}

else{

System.out.print("Array does not contain up to three elements");

}

}

}

1. Tail recursion is a kind of recursion in which the recursive function call is the final operation to be performed. In this situation, the program does not have to preserve the state of the current function call, and it can simply use the space of the present function call for the recursive call.

The purpose of tail recursion is to reduce the number of calls that a recursive function makes in order to reduce stack consumption and improve runtime efficiency. The goal of tail recursion is to ensure that there is no unnecessary stack consumption and that the computer does not run out of stack space. It is important to define functions that use recursion to make repetition tail recursive so that the computer can work faster. This reduces the amount of stack space required to execute the function, making it more efficient. To make a repetition tail recursive, the function must return a final result to be used in the next recursive call.

2. If CONS is applied with two atoms, say 'A and 'B, what is the result? Briefly explain why. CONS is a procedure in Lisp programming language that stands for "construct". It returns a newly created list in which its first element is the value of the first argument, and its second element is the list created by the second argument. If the two arguments to CONS are both atoms, the result is a list with the first atom in the first position and the second atom in the second position. This list is then returned as the result of the function.

3. A lambda expression is an anonymous function that is used to create new functions. It specifies a set of parameters that the function will accept, along with an expression that is evaluated when the function is called. The expression can use the parameters to compute a result that is returned to the caller. Lambda expressions can be used in place of named functions wherever a function is expected. They are often used to create small, one-time-use functions that are passed as arguments to other functions.

4. The following are the differences between =, EQ?, EQV?, and EQUAL:• = is used to compare numbers for numerical equivalence. Two numbers are equivalent if they have the same mathematical value.• EQ? is used to compare two objects to determine if they are the same object in memory. If they are, it returns #t; otherwise, it returns #f.• EQV? is used to compare two objects to determine if they are equivalent in value. It returns #t if the two objects have the same value or if they are the same object in memory.• EQUAL? is used to compare two objects to determine if they are equivalent in value. It is similar to EQV?, but it is more flexible in that it can compare different types of objects, including strings, numbers, and lists.

5. The underlying difference between a sequence and a list in F# is that a sequence is a type of lazy collection that is not stored in memory until it is needed, while a list is a type of eagerly computed collection that is stored in memory. A sequence is designed to be used with large datasets that cannot fit into memory, while a list is designed to be used with smaller datasets that can fit into memory.

6. Implementation of count-by-cat function in racket. The following is an implementation of the count-by-cat function in racket that takes a list of nested lists as input and returns a two-element list with the sum of the values of all nested lists with O as the key in the first element and the sum of the values of all nested lists with 1 as the key in the second element:(define (count-by-cat lst)(let ((zeros (filter (lambda (x) (= (car x) 'O)) lst))(ones (filter (lambda (x) (= (car x) 1)) lst)))(list (apply + (map cdr zeros))(apply + (map cdr ones)))))

Know more about Tail recursion here:

https://brainly.com/question/30762268

#SPJ11

If the spotlight model is false and assuming you could pay attention to everything on the screen, the results would likely show a more equal distribution of attention across various elements on the screen.

In contrast to the spotlight model, which suggests that attention is focused on a limited area or specific objects, the absence of the spotlight model would mean that attention is spread more evenly across the entire visual field.

Without the spotlight model, individuals would not exhibit preferential processing or selective focus on specific objects or regions of the screen. Instead, attention would be distributed across the entire visual scene, and all elements would receive relatively equal attention.

As a result, the results would indicate a lack of significant differences in attention allocation, and the distribution of attention across different elements on the screen would be relatively uniform. This would suggest that individuals are processing and attending to all elements simultaneously without prioritizing specific areas or objects.

Learn more about spotlight model here:

https://brainly.com/question/3935067

#SPJ11

One of the most critical components of an effective coding compliance program is ensuring that patient record documentation is precise and comprehensive.

Maintaining accurate and thorough documentation of patient records is an essential element of healthcare delivery. Accurate documentation can help healthcare providers make informed decisions about patient care and outcomes, assist in quality improvement efforts, and serve as a legal record of the care delivered to the patient. Inaccurate documentation can result in incorrect coding, reduced reimbursements, and may lead to costly fines or penalties for the healthcare provider. To ensure that patient records are accurate and thorough, healthcare providers must implement a strong coding compliance program. This program should include policies and procedures for documentation, regular audits of patient records, and training for staff members on coding and documentation requirements. In addition, the program should include ongoing monitoring and feedback to ensure that staff members are meeting documentation standards. Regular updates and communication regarding changes in coding and documentation guidelines should also be provided. Finally, healthcare providers should establish a culture of compliance, where all staff members understand the importance of accurate documentation and are committed to maintaining it. By implementing an effective coding compliance program, healthcare providers can ensure that patient records are accurate and comprehensive, which can improve patient outcomes and reduce risks for the healthcare provider.

To know more about reimbursements visit:

https://brainly.com/question/28198103

#SPJ11

In this function, we first check if both a and b are greater than 21. If they are, we return 0 since both values have gone over. If only one of the values is greater than 21, we return the other value since it is the nearest to 21 without going over.

Finally, if neither value is greater than 21, we return the maximum value between a and b since it is the nearest value to 21 without going over.You can call this function with two integers a and b to get the desired result. For example:as specified in the problem statement.

result = nearest_to_21(18, 23)

print(result)  # Output: 18

result = nearest_to_21(20, 22)

print(result)  # Output: 20

result = nearest_to_21(25, 27)

print(result)  # Output: 0

Note that the function assumes the inputs a and b are both greater than 0, as specified in the problem statement.

To know more about function click the link below:

brainly.com/question/30763392

#SPJ11

To lay out a web page so it adjusts to the width of the screen, you use : a. fluid layout.

Although fluid layout can also be used with fixed-size elements, responsive documents particularly benefit from it.

Using proportional values as a unit of measurement for blocks of text, graphics, or any other object that is a part of the WordPress design is known as a fluid layout (according to the language used in WordPress theme development). Due to the user's screen size, the web page can now expand and decrease in size.

Learn more about web page at;

https://brainly.com/question/28431103

#SPJ4

complete quesion;

To lay out a web page so it adjusts to the width of the screen, you use : a. fluid layout, b. media queries, c. liquid layout, d. scalable images

Using python as our choice language , the program which performs the function of adding all values in a given dictionary or object is described is as follows :

def sum_values(dictionary):

#function named sum_values is declared and takes a dictionary as argument

"""

Sums the values of a dictionary.

Args:

dictionary: The dictionary to sum, the dictionary could be of any length

Returns:

The sum of the dictionary's values.

"""

sum_of_values = 0

for key, value in dictionary.items():

#iterates through the dictionary as key,value pairs

sum_of_values += value

#iteratively adds all the values in the dictionary given

return sum_of_values

Hence, the program will perform addition operation on all decimal values declared in the dictionary supplied to the function.

Learn more on programs: https://brainly.com/question/26134656

#SPJ4

True. A firewall that provides numerous capabilities to maintain complete visibility and control can offer features and functionalities beyond what traditional firewalls typically provide.

Traditional firewalls primarily focus on traffic filtering based on source and destination IP addresses, port numbers, and protocol types.

However, advanced firewalls or next-generation firewalls (NGFWs) go beyond these basic functionalities. They offer additional features such as deep packet inspection (DPI), intrusion prevention systems (IPS), application control, user identification, content filtering, VPN support, threat intelligence integration, and more. These capabilities enhance visibility into network traffic, enable granular control over applications and user access, and provide better protection against advanced threats.

By incorporating these additional capabilities, a firewall can provide organizations with a more comprehensive and robust security solution, allowing them to better monitor and control network traffic, identify potential threats, enforce security policies, and protect against various types of attacks.

Learn more about firewalls here:

https://brainly.com/question/31753709

#SPJ11

The VPN tunneling protocol that enables forwarding based on MAC addressing is Layer 2 Tunneling Protocol (L2TP).

Layer 2 Tunneling Protocol (L2TP) is a VPN protocol that operates at the data link layer of the OSI model. L2TP allows the creation of virtual private networks by encapsulating data packets within IP packets and establishing tunnels between client and server endpoints. While L2TP itself does not provide encryption or confidentiality, it can be combined with other encryption protocols like IPsec to enhance security.

Unlike other VPN protocols that operate at the network layer, L2TP operates at the data link layer and can forward traffic based on MAC (Media Access Control) addresses, making it suitable for scenarios where MAC-based forwarding is desired. Therefore, L2TP is the VPN tunneling protocol that enables forwarding based on MAC addressing.

You can learn more about Layer 2 Tunneling Protocol  at

https://brainly.com/question/32367069

#SPJ11

To display the number of files in your current directory that match the pattern "linux" using a single Linux pipeline command, you can use the following command:```ls -l | grep -c linux```

Here's what each component of the command does:

1. `ls -l`: lists the files in your current directory in a long format

2. `|`: the pipe operator takes the output of `ls -l` and passes it as input to `grep`

3. `grep -c linux`: searches for the pattern "linux" in the input and returns the count of lines that match the pattern The `-c` option with `grep` is used to count the number of occurrences of the pattern in the input. However, as per the question, you are NOT permitted to use this option with the Linux command for pattern matching. Therefore, we are using a combination of `ls` and `grep` to achieve the desired output.

Know more about linux here:

https://brainly.com/question/32144575

#SPJ11

To compute the equivalent resistance of the network shown in Figure 1, additional information and a visual representation of the circuit are required.

The given statement mentions a battery with negligible internal resistance, but without further details, it is not possible to provide a specific answer regarding the equivalent resistance.

To determine the equivalent resistance of a circuit network, it is necessary to analyze the circuit configuration, including the arrangement of resistors, their values, and the connections between them. Equivalent resistance represents a single resistor that can replace the entire network while maintaining the same current flow.

To compute the equivalent resistance, one can employ various circuit analysis techniques such as Ohm's law, Kirchhoff's laws, or a combination of series and parallel resistor calculations. The specific circuit diagram, resistor values, and connections are essential to perform these calculations accurately.

Learn more about network here:

https://brainly.com/question/29350844

#SPJ11

The Full Screen Reading view is a view that hides the ribbon and shows text on the screen in an easy-to-read format.

The Full Screen Reading view is a new, alternative way to read Microsoft Word files that makes reading documents a much more pleasant experience.The screen is split into two columns, with the text taking up the majority of the screen, and a sidebar on the right providing easy access to various viewing options. This view is ideal for long documents with many pages, and it may be customized to meet your specific reading requirements.Furthermore, the Full Screen Reading view includes a "zoom" option that allows you to zoom in or out on the page, as well as a "Next Page" and "Previous Page" button to help you navigate the document. The Full Screen Reading view is ideal for individuals who want to read through long Word documents without being distracted by unnecessary information.

Learn more about Screen here

brainly.in/question/30942240

#SPJ11

The following refers to the doorways into an operating system, Ports and protocols refer to the doorways into an operating system.

In the context of computer networking and operating systems, ports and protocols play a crucial role in establishing communication between different devices and services. Ports are virtual endpoints that allow data to enter or exit a computer system. They are identified by numerical values and are associated with specific protocols.

Protocols, on the other hand, define the rules and standards for data transmission and communication between devices. They specify the format of data packets, the sequence of actions to be performed, and the procedures for error handling.

Together, ports and protocols act as the doorways into an operating system, enabling the exchange of data and information between different applications, devices, and networks. When a data packet arrives at a computer system, the operating system uses the designated port and the corresponding protocol to determine which application or service should receive the data and how it should be processed. By utilizing ports and protocols, the operating system can efficiently manage the flow of information and facilitate communication between various components of a networked system.

Learn more about Ports here:

https://brainly.com/question/31920439

#SPJ11

**Full question- Which of the following refers to the doorways into an operating system?

- Policies and Procedures

- Ports and Protocols

- Keyboard and Mouse

- Hardware and Software**

a) To split the MNIST dataset into training and testing sets using the mnist function from Keras datasets, and print the number of images in each set along with the image width and height,

you can use the following code:

from tensorflow.keras.datasets import mnist

# Load the MNIST dataset

(x_train, y_train), (x_test, y_test) = mnist.load_data()

# Print the number of images in each set

print("Number of images in the training set:", x_train.shape[0])

print("Number of images in the testing set:", x_test.shape[0])

# Print the image width and height

print("Image width:", x_train.shape[1])

print("Image height:", x_train.shape[2])

b) To write a function that plots a figure with 10 subplots for each digit, you can use the following code:

import matplotlib.pyplot as plt

def plot_digits(images, labels):

   fig, axes = plt.subplots(2, 5, figsize=(10, 4))

   axes = axes.ravel()

   for i in range(10):

       axes[i].imshow(images[i], cmap='gray')

       axes[i].set_title(str(labels[i]))

       axes[i].axis('off')

   plt.tight_layout()

   plt.show()

c) To create a loop that randomly selects images from each set and calls the plot function to create three figures, each containing all 10 digits, you can use the following code:

import numpy as np

# Concatenate the training and testing sets

x_all = np.concatenate((x_train, x_test))

y_all = np.concatenate((y_train, y_test))

# Create three figures

for _ in range(3):

   # Randomly select 10 images from the dataset

   indices = np.random.choice(len(x_all), size=10, replace=False)

   selected_images = x_all[indices]

   selected_labels = y_all[indices]

   # Call the plot function

   plot_digits(selected_images, selected_labels)

d) To randomly select 20% of the training images and labels as the validation set, while keeping the remaining images and labels as the training set, you can use the following code:

from sklearn.model_selection import train_test_split

# Split the training set into training and validation sets

x_train, x_valid, y_train, y_valid = train_test_split(x_train, y_train, test_size=0.2, random_state=42)

# Print the number of images in each set

print("Number of images in the training set:", x_train.shape[0])

print("Number of images in the validation set:", x_valid.shape[0])

This code splits the training set into 80% for training (x_train and y_train) and 20% for validation (x_valid and y_valid). The train_test_split() function from scikit-learn is used to perform the random split, ensuring there are no overlaps between the two sets.

Learn more about dataset here:

https://brainly.com/question/31190306

#SPJ11