A network administrator is looking at the security of their Domain Name System servers and is researching common attacks against DNS. Which of the following is NOT as common of an attack geared towards DNS services?
Question options:
a. Flood attacks
b. Rogue server
c. Zone transfer
d. Cache Poisoning
e. SMB attacks

The most important question to ask a user when trying to determine what a problem is and why is: "Please explain the situation in detail and how it arose."

If the question "What is the problem you are facing?" is not answered in detail, then the question "Why" will be used to ask the user to explain their situation more precisely to identify the underlying cause.

Therefore, both the questions "What is the problem you are facing?" and "Why" should be asked when trying to determine what a problem is. These questions will help to identify the problem and to understand the cause of the problem, which is important in troubleshooting.

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Answer:

The feature you're talking about is usually called a web browser's "homepage." It lets users set a specific web page or a group of web pages to load automatically when they open their web browser. Users can change the settings for their homepage to suit their needs. Some web browsers may also have extra features, like the ability to open multiple tabs with different homepages or to show a grid of frequently visited sites.

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To overwrite the flip coin method to return one of three strings based on the probabilities, you can create a custom function that takes the probabilities as parameters.

Within the function, use a random number generator to generate a number between 0 and 1. Use a series of conditional statements to check if the generated number is within the range of the probability, and then return the corresponding string. For example, if you want to return the strings 'heads', 'tails', and 'edge' with respective probabilities of 0.4, 0.4, and 0.2, you could use the following code:

def flip_coin_3_outcomes(heads, tails, edge):

  random_num = random.random()

  if random_num < heads:

      return 'heads'

  elif random_num < (heads + tails):

      return 'tails'

  else:

      return 'edge'

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This can be done using the subplot function in MATLAB

Write a MATLAB script?

The MATLAB script that uses loop(s) to iteratively calculate the extent of reaction if the initial concentrations of A and B were 3 and 10 mol/L with no present and given the following Keq values is given below

MATLAB Code:

clc; clear all; close all;%

Defining the initial concentrations of A and BcA0 = 3; %mol/LcB0 = 10; %mol/LKeq1 = 0.00015; %L²/mol²Keq2 = 4.0; %L²/mol²Keq3 = 1284; %L^2/mol^2%

Iterating the extent of reaction from 0 to 1 with a step of 0.01for x = 0:0.01:1%

Calculating the Concentrations of A and B after the reactioncA = cA0 - x*cA0;cB = cB0 - x*cB0;%

Calculating the concentration of C and the equilibrium concentration of AcC = x*cA0;cAeq = cA*cB/cC;%

Calculating the equilibrium constant using the concentrations of A, B, and cCKeq1 = cAeq^2/cC*Keq1;

Keq2 = cAeq^2/cC*Keq2;Keq3 = cAeq^2/cC*Keq3;end%

Plotting the extent of reaction vs. equilibrium constantsubplot

(3,1,1)plot(x,Keq1)xlabel('Extent of reaction (x)')ylabel('Equilibrium constant (Keq)')title('Keq = 0.00015 L²mol²)grid onsubplot(3,1,2)plot(x,Keq2)xlabel('Extent of reaction (x)')ylabel('Equilibrium constant (Keq)')title

('Keq = 4.0 L^2mol^-2')grid onsubplot

(3,1,3)plot(x,Keq3)xlabel

('Extent of reaction (x)')ylabel('Equilibrium constant (Keq)')title('Keq = 1284 L^2mol^-2')grid

In the given question, we are asked to calculate the extent of the reaction iteratively using MATLAB loop(s). The given values are the initial concentrations of A and B, and Keq values of three different reactions.

The extent of reaction can be calculated using the formula:x = (cA0 - cA)/cA0 = (cB0 - cB)/cB0

We can iterate the value of x from 0 to 1 using the loop in MATLAB. For each value of x, we can calculate the concentrations of A and B after the reaction. Then, we can calculate the concentration of C using the stoichiometry of the reaction. The equilibrium concentration of A can be calculated using the formula:

cAeq = cA*cB/cC

The equilibrium constant can be calculated using the formula:Keq = (cAeq)^2/cC

For each Keq value, we can plot the extent of reaction vs. equilibrium constant.

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A computer virus is one type of malicious software program that disrupts or destroys existing programs and networks.

A computer virus is a program that attaches itself to other programs or files and, when activated, spreads throughout the computer system.

Virus- A virus is a type of malware that can self-replicate and spread throughout a computer system, frequently infecting other computers via email, file sharing, or a network. A computer virus can be disguised as a legitimate file or program, and when it is executed, it can cause harm to the system or install other malicious programs.

Computer viruses are created by hackers to disrupt computer systems, steal information, or destroy data. They can be difficult to remove once they have infected a computer, and they can spread rapidly via the internet, email, or other means. There are many different types of viruses, each with its own set of symptoms and effects on a computer system.

Therefore, computer virus is the correct answer.

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The bus transmits a memory address when primary storage is the sending or receiving device.

Bus in Computer Science- A bus is a collection of wires used to transmit data from one component to another on a motherboard or other electronic circuit board. In modern computer systems, buses have become a significant component.

The primary purpose of a bus is to enable the computer's different components to communicate with one another. Each bus in a computer has a fixed number of wires dedicated to transmitting data to specific parts of the computer. These buses' capacity and design are determined by the type of computer being built and the components being used. A computer may have a number of buses, each performing a specific function.

The transmission of memory addresses when primary storage is the sending or receiving device is made possible by a bus. To put it another way, the bus makes it possible for the computer's central processing unit (CPU) and random access memory (RAM) to communicate efficiently. When the CPU is looking for information, it sends a request to RAM, and the address of the data is transmitted over the bus. Then, once the requested data is found, it is sent back over the bus to the CPU, which can now use it to execute the instructions required for the computer to complete a given task.

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Answer:

A cookie is a small text file that a website stores on a user's computer or mobile device when they visit the site. Cookies can remember user preferences, login information, and other data that helps websites personalize the user experience.

First-party cookies are created by the website that the user is visiting, while third-party cookies are created by a domain other than the one the user is currently visiting. Third-party cookies are commonly used for tracking user behavior across multiple websites for targeted advertising purposes.

Whether cookies are good or bad depends on their use. Cookies can be useful for remembering user preferences and login information, which can improve the user experience on websites. However, some cookies are used for tracking user behavior without their knowledge or consent, which can be a privacy concern. It's important for users to be aware of how cookies are being used and to have the ability to control their cookie settings.

In the entity column of the CO2 and oil source dataset, the percentage of rows in the default sample that are marked red (NOK) for having an invalid meaning is 9%.

An entity in data mining is a unique, identifiable object or concept that exists in the data that you're working with. In the context of the CO2 and oil source dataset, entities are the individual samples or sources of CO2 and oil that are being analyzed.The dataset contains a column labeled "entity" that identifies each sample/source, along with other columns that provide data on the type, location, and other attributes of each entity. The column is color-coded so that rows that are marked red (NOK) are flagged as having an invalid meaning. In the default sample of the CO2 and oil source dataset, 9% of the rows in the entity column are marked red (NOK) for having an invalid meaning.

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When a person logs on to a computer in their assigned domain, the kind of program they choose can be installed automatically.

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The activity that Isabella is planning to carry out with her DRP (Disaster Recovery Planning) team is called a "Disaster Recovery Test" or "DR Test."

A DR test is a process of testing the effectiveness of a company's disaster recovery plan by simulating a disaster scenario and evaluating the organization's ability to recover from it. In this case, the DR test involves interrupting the primary data center, which simulates a disaster, and transferring the processing capability to a hot site, which is the secondary data center designated for disaster recovery.

By performing a DR test, Isabella and her team can identify any weaknesses or gaps in the disaster recovery plan and take corrective actions before an actual disaster occurs. The DR test also helps to ensure that the organization can recover critical systems and operations in a timely and effective manner, minimizing the impact of a disaster on the business.

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To add a bill using the Receipt Capture feature in QuickBooks Online, Mariette can follow these steps:

1-Open QuickBooks Online and go to the "Expenses" tab.

2-Click on the "Receipts" tab and then click on "New receipt".

3-Select the appropriate vendor from the drop-down menu and enter the date and total amount of the bill.

4-Click on "Add expense account" to assign the bill to a specific account.

5-Click on "Upload receipt" and choose the file from her computer or cloud storage that contains the bill.

6-Verify the information entered and then click on "Save and close" to add the bill to her company's records.

By using the Receipt Capture feature, Mariette can easily keep track of bills and expenses, and ensure that all financial records are accurate and up-to-date.

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The given statement "When obtaining information on products and services from websites, discussion boards, and blogs, it is important NOT to assume that vendors' claims are accurate" is true because a vendor is a business or person who sells products or services to customers. They have no control over who purchases their products or services.

When consumers conduct research on the internet, it is critical that they are cautious and do not rely solely on a vendor's claims. The following are the reasons why it is crucial not to assume that vendor's claims are accurate:

When obtaining information on products and services from websites, discussion boards, and blogs, it is important not to assume that vendors' claims are accurate. Consumers should do their research and seek third-party reviews or other credible sources of information before making a purchase.

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Analog signals are represented as continuous waveforms that can be at an infinite number of points between some given minimum and maximum.

What are Analog Signals?

Analog signals are the signals that use continuous waves to transmit information. The word "analog" refers to the fact that the signal is analogous to the information it represents. Analog signals can take on any value at any point in time. That means, the signal's voltage or current can vary infinitely, giving it an infinite number of possibilities.

What are Digital Signals?

Digital signals are signals that use discrete, discontinuous waveforms to transmit information. These signals are represented by a series of 1s and 0s (bits) and are transmitted via a wire or airwaves. Digital signals can only take on certain values (0 or 1), and the signal must be at a specific level (or threshold) for the receiver to read it correctly.

What are Digital Pulses?

Digital pulses are simply the rapid change of voltage from one state to another. They represent the bits (1s and 0s) that are used in digital signal transmissions. The speed of the pulse and the duration of the "on" state determine the rate at which data is transmitted.

What is Digital Data?

Digital data refers to information that has been converted into binary code (a series of 1s and 0s) that computers can read and understand. Digital data can be transmitted via digital signals, which are more reliable and secure than analog signals. Digital data is used for everything from email and text messages to streaming video and online gaming.

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The risk response implemented by the security manager is risk mitigation.

Full disk encryption is a security measure that helps to protect sensitive data from unauthorized access if a laptop is lost or stolen. By encrypting the entire contents of the laptop's hard drive, the data is made unreadable without the appropriate encryption key. This reduces the impact of the risk associated with data loss due to stolen laptops. The risk has not been eliminated, but its potential impact has been significantly reduced through the implementation of a security control.

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Lifecycle management is available for both storage1 and storage2 accounts. The movement and destruction of data based on user-defined policies may be automated using Azure Storage Lifecycle management.

The movement and destruction of data based on user-defined policies may be automated using Azure Storage Lifecycle management. Only account types of StorageV2 and BlobStorage that have this functionality enabled can use it. Lifecycle management is available for both storage1 and storage2 accounts. Because storage1 is specified as a StorageV2 kind and storage2 is configured as a BlobStorage kind in this case, both storages are eligible for Lifecycle management. Storage3, on the other hand, is not qualified since it is set up as a FileStorage type, which does not enable Lifecycle management.

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The number of computers required to create a network varies depending on the size and scope of the network. The goal of a computer network is to transfer, exchange, or share data and resources between two or more computers that are linked together via WiFi or wires (wired).

However, to create a basic home network, you will need at least two computers connected by a router or switch. Furthermore, there are many types of networks, including Local Area Networks (LANs),

Wide Area Networks (WANs), and Metropolitan Area Networks (MANs), and the number of computers required varies depending on the type of network.

For example, a LAN might only require two or three computers, while a WAN might need hundreds or thousands of computers to be effective.

Similarly, the number of computers needed to build a MAN will depend on the number of users, the distance between locations, and other factors.

To summarize, the number of computers needed to build a network varies depending on the type of network, the number of users, and the geographic location of the computers.

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Configuration Manager is a tool designed to help system administrators manage large-scale computing environments. It provides a single console for managing both physical and virtual servers, desktops, laptops, and mobile devices, allowing administrators to automate deployment, updates, and configuration of these systems.

To configure discovery and boundaries in Configuration Manager, follow the steps given below:

Step 1: Open the Configuration Manager console.

Step 2: To configure boundaries, go to the Administration workspace, expand Hierarchy Configuration, and select Boundaries.

Step 3: To configure discovery methods, go to the Administration workspace, expand Hierarchy Configuration, and select Discovery Methods.

Step 4: Click Create Boundary, specify the type of boundary, and then click OK.

Step 5: When configuring boundary groups, be sure to include all boundaries that fall within the group's geographic region. The associated site system servers will then automatically install software, manage clients, and maintain security in the associated boundaries.

Step 6: When configuring discovery methods, select the type of discovery that best suits your needs, such as Active Directory System Discovery, Network Discovery, or Heartbeat Discovery.

Once configured, the discovery methods will scan the network for devices and add them to the Configuration Manager console, where they can be managed as needed.

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The following question may be like this:

What is Configuring discovery and boundaries in Configuration Manager?

To improve his score on a security self-assessment, Saul set up his laptop so that the first thing he must do when he turns it on is to enter a strong and unique password or passphrase to log in to the system.

This helps ensure that only authorized users can access the laptop and its data, and reduces the risk of unauthorized access or data breaches. Additionally, Saul may have enabled other security measures such as full disk encryption or multi-factor authentication to further enhance the security of his laptop.

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A single sign-on system that uses symmetric key encryption and provides mutual authentication for clients and servers is Kerberos.

It is a network authentication protocol that establishes a trusted third party to verify the identities of clients and servers. It was developed by MIT in the 1980s and has since become a widely used authentication protocol in enterprise networks.Kerberos works by using a centralized authentication server to issue tickets to clients, which they can use to authenticate themselves to other servers in the network. This process allows for seamless authentication across multiple servers without requiring users to enter their credentials repeatedly. Additionally, Kerberos uses symmetric key encryption to secure communication between clients and servers, which helps prevent eavesdropping and other attacks.

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The most likely reason for the anomalies is: c. A backdoor was installed previously and utilized over the weekend to access the computer and the programs.

Program- A program is a sequence of instructions that a computer executes to achieve a particular task. The operating system, system software, utilities, and applications are examples of programs. Computer programs are written in a programming language and are stored in a computer's memory or on storage devices such as hard drives or USB drives. When executed, the instructions are carried out by the computer, which performs the specified task.

Anomalies- Anomaly is defined as an unusual or unexpected occurrence, event, or behavior. In the IT industry, anomaly detection is used to recognize events that do not follow the expected pattern of behavior. When a situation deviates from the expected norm or when a system parameter falls outside of the normal range, it may indicate the presence of an anomaly in the system. Anomalies may be caused by system problems or by human error and could signal a security vulnerability that could be exploited by attackers. Hence the term "ANOMALIES" in the question refers to an unusual or unexpected event that occurred with the computer settings and programs.

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True. The transport-level protocol can use encryption to ensure that application messages are not read by intruders, even if the network layer cannot guarantee the confidentiality of transport-layer segments. However, encryption at the transport layer is typically used to improve security rather than to ensure confidentiality.

Encryption is a process that involves converting plaintext into ciphertext so that it can be sent over the internet securely. Encryption is the method of encoding messages to keep them secret. By translating the text into a secret code, encryption can help keep your data private from unauthorized parties.

The procedure is used to protect sensitive data, such as credit card numbers, social security numbers, and login credentials, by scrambling the data and then making it unreadable until it is decrypted with the appropriate key.

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Depending on the kind of firewall being used and the particular parameters set up on it, the procedure for unblocking a firewall connection may differ.

The following general procedures can assist you in opening a firewall connection:

How to locate the firewall Identify the firewall that is preventing the connection.

Verify the firewall's configurations: Check the firewall's settings to see if the connection you're trying to utilise is blocked or not.

Add an exception: If the firewall is blocking the connection, you can add a rule or an exception to let the connection through.

Temporarily turn off the firewall: If adding an exception does not help, you can turn off the firewall for a while and see if the connection still functions.

Check the firewall's documentation or get help from a technical person: if you're unable to manually unblock the firewall connection.

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The program calculates and displays the simple interest in Python for several loans by taking input of principal, rate, and days, and using the formula interest = principal * rate * days / 365.

What is Python?
Python is a high-level, interpreted programming language that is widely used for various purposes such as web development, data analysis, machine learning, and artificial intelligence.


Here's the Python code to implement the interest calculator:

while True:

   principal = float(input("Enter loan principal (-1 to end): "))

   if principal == -1:

       break

   rate = float(input("Enter interest rate: "))

   days = int(input("Enter term of the loan in days: "))

   interest = principal * rate * days / 365

   print("The interest charge is ${:.2f}".format(interest))

1) The program uses a while loop to repeatedly prompt the user for input until they enter -1 to end the program.

2) Inside the loop, the program uses input() to get the principal, interest rate, and loan term in days from the user, and stores them in variables.

3) The program then calculates the simple interest using the formula given in the problem statement: interest = principal * rate * days / 365.

4) Finally, the program uses print() to display the calculated interest to the user.

Sample output:
Enter loan principal (-1 to end): 1000.00

Enter interest rate: .1

Enter term of the loan in days: 365

The interest charge is $100.00

Enter loan principal (-1 to end): 1000.00

Enter interest rate: .08375

Enter term of the loan in days: 224

The interest charge is $51.40

Enter loan principal (-1 to end): -1

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In the communication process, encoding takes place before the message.encodes refers to the process of converting the message or information that the sender wants to communicate into a form that can be transmitted through a communication channel.

This involves selecting the appropriate words, symbols, or other means of conveying the message in a way that can be understood by the receiver.Before the message can be transmitted, the sender must first encode it into a form that can be transmitted. This involves not only selecting the appropriate words and symbols, but also taking into account the context, tone, and other factors that can affect how the message is perceived.Once the message has been encoded, it can then be transmitted through a communication channel to the receiver. After the message has been transmitted, the receiver must then decode or interpret the message in order to understand its meaning.

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Answer:

The Application Layer is the OSI layer that serves as the link between the programs used to communicate and the network over which messages are sent (Layer 7).

The Application Layer is in charge of offering services that help user applications directly. It specifies the protocols and interfaces that applications use to connect to network services, and it lets applications running on different hosts talk to each other from end to end.

At the Application Layer, some common protocols are HTTP (Hypertext Transfer Protocol) for browsing the web, SMTP (Simple Mail Transfer Protocol) for sending and receiving emails, and FTP (File Transfer Protocol) for sending and receiving files.

The majority of the time, websites that offer travel- or educational-related material will have maps and driving instructions.

Web pages are the common name for web-based documents. T. Web servers are servers where websites are normally kept, or hosted. T. A URL that contains the HTTPS protocol denotes that the web page has finished, been sent, or been loaded.

A wiki is an online hypertext publication that is collaboratively revised and maintained by its own audience through the use of a web browser (/wki/ (listen) WIK-ee).

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Answer:

The correct answer is b. reference.

What is a web site?

A web site is a collection of web pages. It contains multimedia content like text, images, videos, and interactive apps that are associated with a specific domain name and published on one or more web servers. A web site can be accessed via a web browser over the internet. It can be accessed using any internet-enabled device, including desktop computers, tablets, and mobile phones.

Explanation:

Web sites provide access to specific types of useful information, such as maps and driving directions, product information, news, and educational or reference contentProduct Information is a specific type of useful information that web sites provide. Product Information is any data about a product that a customer may want to know before purchasing it. It can include product features, specifications, price, availability, and reviews. Product Information is important to customers, especially when they're making purchasing decisions. It enables them to compare different products and make informed choices. Therefore, e-commerce and online retail websites usually provide detailed Product Information for their products.

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Answer:

input device is a device that provide information to a computer

It lowers the network's administrative overhead. However, it is not recommended for large networks KW.

What is DHCPv6?

DHCPv6 refers to Dynamic Host Configuration Protocol for IPv6 (Internet Protocol version 6), which is used to assign IPv6 addresses to network devices automatically. When it comes to IPv6, DHCPv6 is a good replacement for IPv4 since it includes functionality for granting IPv6 addresses, IPv6 prefix delegation, and other options. DHCPv6 provides several advantages over IPv6, including flexibility, adaptability, and automated host configuration.

How to diagnose the problem?

Stateless DHCPv6 operation implementation for the firm has failed. IPv6 addresses are being configured by clients as expected. However, clients are not obtaining DNS server address and domain name data from the DHCP pool. The GigabitEthernet interface is turned on, the DNS server address is on the same network as the clients, and clients can talk to the DHCPv6 server.The issue is caused by the router being configured for SLAAC (Stateless Address Autoconfiguration) operation. Stateful DHCPv6 operation, in which the DHCPv6 server provides addresses and options to the client, is required for DNS and domain name data to be assigned to the clients. DHCPv6 server is assigned the role of providing the DNS server address and domain name information to the clients.

What is Stateless Address Autoconfiguration?

Stateless Address Autoconfiguration (SLAAC) is a protocol in which the router sends the prefix to the host, and the host creates its address using that prefix. The host will generate an EUI-64 (Extended Unique Identifier 64) that will be used as the interface ID. SLAAC eliminates the need for DHCPv6 (Dynamic Host Configuration Protocol version 6) servers by enabling hosts to generate their own IP addresses.

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The two functions that are performed at the LLC sublayer of the OSI Data Link Layer to facilitate Ethernet communication are:

D: Implements a process to delimit fields within an Ethernet 2 frame: The LLC sublayer adds a header and trailer to the Ethernet 2 frame, which includes information such as the source and destination MAC addresses, and a type field that identifies which network layer protocol is being encapsulated by the frame.

E: Places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame: The type field in the header added by the LLC sublayer identifies the network layer protocol being used, such as IPv4 or IPv6.

Option 1 is incorrect because CSMA/CD is implemented at the MAC sublayer, not the LLC sublayer. Option 2 is also incorrect because enabling IPv4 and IPv6 to utilize the same physical medium is not a function of the LLC sublayer. Option 3 is incorrect because integrating Layer 2 flows between different types of Ethernet is not a function of the LLC sublayer, but rather a function of Ethernet switches and routers.

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When a new user account is created, the /etc/skel directory is copied and named accordingly to form the new user's home directory.

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