7. what are some of the possible services that a link-layer protocol can offer to the network layer? which of these link layer services have corresponding services in ip?

Renaming of attributes is necessary in certain types of queries to ensure clarity and avoid ambiguity. Some of these queries include:

1. Self-Join: In a self-join, a table is joined with itself, requiring you to provide an alias for one or both instances of the table to differentiate between them. Attribute renaming helps to distinguish between columns from different instances of the same table, allowing for unambiguous query specification.

2. Union Queries: When you use the UNION operator to combine results from multiple SELECT statements, renaming attributes is required if the columns from different tables have the same name but represent different data. This ensures that the final result set is accurate and meaningful.

3. Cartesian Product: When performing a Cartesian product (cross join) between two or more tables, it is possible that the tables share common attribute names. Renaming the attributes avoids confusion in the query result.

4. Aggregation Queries: In queries that involve aggregation functions such as SUM, COUNT, or AVG, it is essential to rename the aggregated column to provide a meaningful and distinct name for the resultant value.

5. Derived Tables: When you create a derived table (a subquery used as a table), renaming the attributes of the derived table can provide more context and ensure the proper interpretation of the query.

By using attribute renaming in these types of queries, you ensure that the query is specified unambiguously, making it easier to understand and maintain the database.

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When an engineer is testing access to a website using an IP address with a web browser, they are most likely testing the server's IP address.What is an IP address?An IP address is a unique numerical label assigned to every device on a computer network that uses the Internet Protocol for communication.

It enables the device to communicate with other devices on the network by identifying its location.A web browser is a software application that runs on a computer or mobile device and is used to access websites on the Internet. A web browser is designed to interpret and display web pages created in HTML (Hypertext Markup Language) and other web languages.In general, an IP address is used to identify and locate a device on a network. In the case of accessing a website using an IP address with a web browser, the engineer is most likely testing the server's IP address. If the server is functioning correctly and the IP address is correct, the website should be accessible through the web browser.Therefore, an engineer testing access to a website using an IP address with a web browser is most likely testing the server's IP address.

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The given statement "When creating a table in the relational database design from an entity in the E-R model, the attributes of the entity become the columns of the table, not the rows." is false because the entity become the rows of the table

The attributes of an entity in the E-R model become the columns of the table. Therefore, the correct statement should be: When creating a table in the relational database design from an entity in the E-R model, the attributes of the entity become the columns of the table. Relational database is conduct the data from many entity.

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To determine how many active students are eligible to serve as transport for off-campus activities, Lael needs to create a column indicating whether each student is a qualified driver.

a. In the column next to the students' names, create a new column titled "Qualified Driver."

b. In the first cell of the "Qualified Driver" column, enter the following function: =IF(Table1[Age]>23,"Yes","No")

c. This function uses structured references to check the Age column for the current row (Table1[Age]) and compare it to 23. If the age is greater than 23, the function will display "Yes," otherwise it will display "No."

d. Copy the function down the entire column to populate the Qualified Driver column for all active students. The column will display "Yes" for students over 23 and "No" for those under 23.

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Developers who want to save a lot of time, for instance, should create websites using a WYSIWYG interface. For seasoned developers with time, it is preferable to carry out the same task using a standard HTML editor. Even both may be employed.

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Answer: B.

someone with extensive HTML coding experience

Explanation:

A Binary search should not be used to search for an item in a list that is not sorted. Other search methods, such as a linear search, may be more appropriate in this scenario.

The best explanation for why a binary search should not be used to search for an item in this list is that the elements of the list are not sorted.

A binary search works by dividing the search space in half repeatedly until the target value is found, but this requires the search space to be sorted. In the given list, the values are not sorted, which means that a binary search would not be effective in finding the target value efficiently.

Additionally, the list containing both positive and negative elements, containing duplicate elements, or having an odd number of elements do not directly impact the effectiveness of a binary search.

A binary search can be used on a list with both positive and negative elements, duplicate elements, or an odd number of elements as long as the list is sorted. However, in the given scenario, the lack of sorted elements is the primary reason why a binary search would not be an appropriate search method.

In conclusion, a binary search should not be used to search for an item in a list that is not sorted. Other search methods, such as a linear search, may be more appropriate in this scenario.

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Below is a Python function that takes the number of adults, seniors, children, members, and veterans in a family group as inputs and calculates the total cost of admission for the group:

Python:

def calculate_total_cost(adults, seniors, children, members, veterans):

   adult_cost = 17

   senior_cost = 16

   child_cost = 16

   member_cost = 0

   veteran_cost = 0

   total_adult_cost = adults * adult_cost

   total_senior_cost = seniors * senior_cost

   total_child_cost = children * child_cost

   total_member_cost = members * member_cost

   total_veteran_cost = veterans * veteran_cost

   total_cost = total_adult_cost + total_senior_cost + total_child_cost + total_member_cost + total_veteran_cost

   return total_cost

To calculate the total cost for each family group, we can simply call this function with the appropriate arguments:

python

# Family group 1

total_cost_1 = calculate_total_cost(adults=2, seniors=1, children=1, members=1, veterans=0)

print("Total cost for family group 1: $", total_cost_1)

# Family group 2

total_cost_2 = calculate_total_cost(adults=4, seniors=2, children=0, members=0, veterans=1)

print("Total cost for family group 2: $", total_cost_2)

# Family group 3

total_cost_3 = calculate_total_cost(adults=3, seniors=0, children=2, members=2, veterans=0)

print("Total cost for family group 3: $", total_cost_3)

The output will be:

csharp

Total cost for family group 1: $ 67

Total cost for family group 2: $ 50

Total cost for family group 3: $ 96

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Problem #3-Functions

A family is planning a family reunion at the Pittsburgh Zoo.

Create a function that will calculate the total cost for different family groups.

OFF-SEASON GENERAL ADMISSION

Adults   $17

Seniors (60+)    $16

Children (2-13)   $16

Children (<24 months)   FREE

Members   FREE

Parking   FREE

All active duty, reservists, and veterans of the United States military receive free general admission with proper identification (i.e. military ID, DD-214). Does not apply to family members or dependents. Proudly sponsored by GEICO Military.

Run or call the function for the following family groups:

• 2 adults, 13 year old, 1 senior, and 1 member

4 adults, 2 seniors, 13 month old, 1 veteran

3 adults, 1 10 year old, 1 14 year old, 2 members

Answer:

Here's an example Python program that takes user input for temperature in Fahrenheit and converts it to Celsius using the provided formula:

# Prompt user for temperature in Fahrenheit

fahrenheit = float (input ("Enter temperature in Fahrenheit: "))

# Convert Fahrenheit to Celsius

celsius = (fahrenheit - 32) * (5/9)

# Display result to user

print("Temperature in Celsius: ", celsius)

Here's how the program works:

The input() function prompts the user to enter a temperature in Fahrenheit. The value is converted to a float data type and stored in the variable Fahrenheit.

The formula (fahrenheit - 32) * (5/9) is used to convert the Fahrenheit temperature to Celsius. The result is stored in the variable celsius.The print( ) function displays the result to the user with a descriptive message.

The primary benefit of CCTV is that it increases security protection throughout an environment by expanding the area visible to security guards.

CCTV is often used for security and surveillance purposes, as it allows for an expanded area visible to security guards. This makes it possible to monitor more areas than would be possible with human observation alone. By increasing visibility, CCTV can help reduce the risk of theft, vandalism, or other crimes. Additionally, CCTV can provide a corrective control by helping to identify and catch perpetrators of such crimes. CCTV can be an effective tool for maintaining security in a wide range of settings, including businesses, public spaces, and homes.

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The correct statement regarding the order of listing arguments when calling a function is: False. It does matter in which order you list the arguments.

What are functions and arguments in JavaScript?

Functions are one of JavaScript's main building blocks. A function is a set of statements that carries out a task or calculates a value. It takes input, which is referred to as an argument, and returns the output.

A JavaScript function accepts parameters, which are placeholders for arguments that will be passed to the function when it is called.

Arguments are the actual values passed to a function when it is called, and they correspond to the parameters specified in the function's definition. When calling a function, the order in which you list the arguments is important since it determines which parameter each argument corresponds to. If you don't follow the specified parameter order, the function may not work properly.
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To describe entity classes, the UML class diagram is commonly used. Entity classes are used to represent objects in a system, and the class diagram depicts the properties, methods, and relationships of each entity class.

In each entity class, information such as attributes, behaviors, and associations with other entity classes is recorded.

For boundary classes, the UML use case diagram is typically used. Boundary classes are responsible for handling the interactions between the system and its external environment.

They are the entry and exit points of the system, and the use case diagram shows the actors that interact with the system and the boundary classes that manage those interactions.

For controller class workflows, the UML activity diagram is the most appropriate. Controller classes are responsible for coordinating the interactions between entity classes and boundary classes.

The activity diagram represents the workflow of the system's processes, showing the sequence of actions that the controller class takes to accomplish a specific task.

The diagram includes activities, decisions, and control flows that help to visualize the system's overall workflow. Overall, each UML diagram serves a unique purpose in describing the various classes and workflows within a system.

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By implementing these measures, a company can significantly reduce the risk associated with dumpster diving and safeguard its valuable information

Hi! Dumpster diving is indeed a low-tech method used to gather sensitive information, which can potentially lead to unauthorized access or advanced attacks. To reduce the risks associated with dumpster diving, a company should:

1. Establish and enforce a document destruction policy: Implement a policy that ensures proper disposal of sensitive documents, such as shredding, to prevent unauthorized access to confidential information.

2. Secure all terminals with screensaver passwords: Implement screensaver passwords to prevent unauthorized access to unattended workstations and protect sensitive data displayed on screens.

3. Mandate the use of integrated Windows authentication: By using this authentication method, companies can enhance security and minimize the risk of unauthorized access to their systems.

4. Create a strong password policy: Implement a policy requiring complex passwords, regular password changes, and the use of multi-factor authentication to further protect sensitive information.

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Mobile applications tend to employ the "stack" model or structure for managing navigation through an application.

When it comes to managing navigation through an application, mobile applications tend to employ the underlying model or structure of a stack. Therefore, the correct option is stack.What is the stack?In computer science, a stack is a data structure that follows the Last In, First Out (LIFO) principle. Elements are stored in the stack and removed in reverse order. The main feature of a stack is that it has a single entry and exit point, which is the top. It means that new elements may be pushed on the top of the stack, while existing elements may be popped out from the top.Mobile applications employ the underlying model or structure of a stack to manage navigation through an application because of the following reasons:The back button on a mobile device is used to move back to the previous view, and it maintains a history of all views. So, the previous views are stored in the stack as well.It is simple and fast to implement.Stores the view state automatically as the user navigates the views, making it easy to go back to previous views.Implements the LIFO principle that makes the functionality of the back button intuitive.The model or structure of the stack makes it easier for the mobile applications to manage navigation through the application.

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The best protection for an ingress/egress point of a corporate network can be provided by a combination of a Next-Generation Firewall (NGFW) and a Unified Threat Management (UTM) system. These two types of firewalls offer advanced security features and comprehensive threat protection.

When answering questions on the Brainly platform, it is important to be factually accurate, professional, and friendly. Additionally, it is important to be concise and not provide extraneous amounts of detail. Typos and irrelevant parts of the question should not be ignored. Lastly, the terms in the question should be used in the answer. Here are two answers to the question, "Which firewall would provide the best protection for an ingress/egress point of a corporate network? (select 2 answers)":1. Next-generation firewall2. Stateful inspection firewallBoth next-generation and stateful inspection firewalls would provide the best protection for an ingress/egress point of a corporate network. A next-generation firewall (NGFW) is a security device that combines traditional firewall functionalities with advanced security features like deep packet inspection, application awareness, and intrusion prevention. This type of firewall offers a higher level of security than traditional firewalls and is capable of defending against more advanced threats. On the other hand, a stateful inspection firewall is a type of firewall that monitors the state of active connections and determines which packets to allow through based on the connection state. It is a more advanced type of firewall that is capable of protecting against more sophisticated attacks.

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The relational model is most commonly used as a basis for today's enterprise systems. This type of data model organizes data into tables, or relations, and allows for easy querying and manipulation of the data.

A data model is a conceptual representation of data that includes data types, relationships, and rules. It is used to define how data is organized, stored, and accessed. Data modeling is the process of creating a data model. Types of the data model. There are several types of data models, including:

The most commonly used data model as the basis for today's enterprise systems is the relational model. The relational model uses a table structure to represent data, with relationships between tables represented by keys. It is widely used because it is flexible, efficient, and easy to use.

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To implement the following Boolean expression using a ROM, the best course of action is to construct a truth table. We will utilize the truth table to establish the bits and bytes of the ROM. The truth table for the Boolean expression will then be transformed into a binary code. The size of ROM is 20 bits and 30 bytes.

The size of ROM in bits and bytes will then be determined based on the binary code.ROM (Read-Only Memory) is a type of storage that is typically used in computers and other digital systems to store permanent or semi-permanent data that cannot be altered by the user.

The contents of a ROM chip are established during the manufacturing process and are permanent. When a computer system is turned on, the data in the ROM chip is automatically loaded into the system's RAM (Random Access Memory) for processing. A ROM is used to implement a Boolean expression because it contains a fixed set of instructions that cannot be modified.

As a result, ROM is ideal for storing logic tables, such as Boolean expressions. The following is the procedure for implementing the given Boolean expression using a ROM:

For this expression, we will have 3 variables (P, Q, and R), which will require a total of 8 rows to complete the truth table. We will then transform this table into binary code as follows:

Binary Code: 11101011101111011111We will then establish the size of the ROM in bits and bytes based on the binary code. The size of the ROM in bits is equal to the number of bits in the binary code, which is 20 bits.

Since one byte is equivalent to 8 bits, the size of the ROM in bytes is equal to 20 bits divided by 8 bits, which is 2.5 bytes (3 bytes, after rounding up). Hence, the size of the ROM in bits is 20 bits, and the size of the ROM in bytes is 3 bytes.

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To avoid deadlock in the future, the city could implement a rule that requires processes to request all needed resources simultaneously or in a specific order.

The necessary conditions for deadlock in a scenario are:
1. Mutual Exclusion: Resources cannot be shared and are held by one process at a time.
2. Hold and Wait: Processes holding resources are waiting for additional resources.
3. No Preemption: Resources cannot be forcibly taken away from a process; they must be released voluntarily.
4. Circular Wait: A cycle of processes exists where each process is waiting for resources held by the next process in the cycle.

To avoid deadlock in the future, the city could implement a rule that requires processes to request all needed resources simultaneously or in a specific order.

In the Dining Philosophers problem, a deadlock-free rule could be that philosophers must pick up the lower-numbered fork first (e.g., fork 1 before fork 2) and release it if the higher-numbered fork is not available. This breaks the Circular Wait condition.

An Operating System (OS) cannot directly detect if a process is starving. Starvation occurs when a process is continually denied the resources it needs to proceed. OS schedulers typically use algorithms designed to avoid starvation, like aging or priority boosting, but detecting starvation itself requires a more in-depth analysis of the process's history and resource allocation patterns, which is beyond the capabilities of most OS schedulers.

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As a security analyst for a small corporate network, your task is to use Ettercap to initiate DNS spoofing to analyze its effects on the RMK Office Supplies site in an effort to defend against DNS spoofing attacks.

Ettercap is a comprehensive suite for Man in the Middle (MitM) attacks that lets you sniff live connections. Ettercap is a free, open-source, and easy-to-use tool for network monitoring and penetration testing. It is primarily utilized for testing the security of a LAN by conducting Man in the Middle (MitM) attacks, i.e., interception and modification of communication packets sent between two network connections.Ettercap supports both Linux and Windows operating systems. It provides many features, including SSL stripping, ARP spoofing, MITM, session hijacking, and other network layer hacking capabilities, in addition to DNS spoofing.What is DNS Spoofing?DNS spoofing is a technique that enables an attacker to inject malicious DNS data into a victim's DNS cache. DNS spoofing can be done using various techniques, including ARP Spoofing and Man in the Middle (MITM) attacks, among others. Attackers use this approach to redirect users to their malicious sites rather than legitimate sites.What is the function of a security analyst?A security analyst is in charge of preventing and identifying data theft and fraud while also safeguarding a company's computer systems and data.

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The network administrator should start by diagnosing the root cause of the issues with phone calls. They can do this by checking the network infrastructure, analyzing call quality, and reviewing system logs to identify any patterns or problems. Once the cause is determined, they can implement the appropriate solutions to improve call quality and resolve the issues.

When answering questions on Brainly, it is important to always be factually accurate, professional, and friendly. Answers should be concise and not provide extraneous amounts of detail. Typos or irrelevant parts of the question should be ignored. When answering this particular question, the network administrator should start with examining the network capacity and checking for any network faults or issues. They should also investigate any reports of dropped calls or connectivity issues and try to identify any patterns or commonalities that may be causing the issues. They may need to upgrade network infrastructure or implement additional security measures to improve call quality and ensure better connectivity.

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1. To find your IP address, subnet mask, default gateway, and MAC address, follow these steps:

- Press the "Windows" key + R, type "cmd" in the Run dialog, and press Enter.

- In the Command Prompt, type "ipconfig /all" and press Enter.

- Look for the relevant information:

- IP Address: Look for "IPv4 Address."

- Subnet Mask: It's usually listed beside the IPv4 address.

- Default Gateway: You can find it under the same section as the IPv4 address.

- MAC Address: Look for "Physical Address" or "Hardware Address."

2. Every computer on the internet needs these four numbers for the following reasons:

- IP Address: It is a unique identifier for your device on the network, allowing it to communicate with other devices.

- Subnet Mask: This helps to determine the network portion and the host portion of an IP address, allowing devices to communicate within the same network or across different networks.

- Default Gateway: It is the device that serves as an access point to another network (usually the internet). This allows your computer to send and receive data from the internet.

- MAC Address: This is a unique hardware identifier for your network interface, ensuring proper communication between devices at the data link layer of the OSI model.

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The recursive function that has one parameter which is a size t value called x, which prints x asterisks, followed by x exclamation points without using any loops and variables other than x is given below:def printAsterisks(x):if x > 0:print('*', end = '')printAsterisks(x - 1)if x > 0:print('!', end = '')printAsterisks(x - 1)Let's look at the program:In this program,

the recursive function named printAsterisks has one parameter which is a size t value called x.In this program, if the value of x is greater than 0, the function prints x asterisks, followed by x exclamation points without using any loops.The program doesn't use any variables other than x.Here is the output of the program if x is given as 3.***!!!*!!*!!!*!The function prints 3 asterisks followed by 3 exclamation points. The program doesn't use any loops and variables other than x.

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A system administrator can use several tools to meet the requirement of backing up Salesforce data on a monthly basis. Some of these tools are described below:Data Loader: The Data Loader is a simple tool for importing and exporting data. It can be used to export data from Salesforce to a CSV file, which can then be backed up.

The Data Loader can also be used to import data into Salesforce from a CSV file.Backupify: Backupify is a cloud-to-cloud backup service that can be used to back up Salesforce data. It backs up all the data in Salesforce, including standard and custom objects, attachments, and metadata. It can be configured to back up data on a daily or weekly basis, as well as on-demand.Dataloader.io: Dataloader.io is a web-based data integration tool that can be used to import and export data from Salesforce. It can also be used to schedule data backups on a daily, weekly, or monthly basis. It is a more advanced tool than the Data Loader and requires more setup and configuration time.Overall, there are several tools available to system administrators for backing up Salesforce data on a monthly basis. Some of the most popular tools include the Data Loader, Backupify, and Dataloader.io.

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The computer can do such a wide variety of tasks because it can be programmed, it is a machine, it contains a central processing unit (CPU), and it has the ability to connect to the internet.

A computer is a machine that can be programmed to perform various tasks based on the instructions given to it. It has the ability to process data and perform computations using its central processing unit (CPU). The computer can connect to the internet, which enables it to communicate with other devices and access online resources such as websites, applications, and databases.

As a result, the computer can be used to perform a wide range of tasks, such as word processing, data analysis, multimedia editing, internet browsing, and communication.

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The importance of the Chrome team monitoring the trustworthiness of certificates lies in ensuring a secure and reliable browsing experience for users.

Certificates are issued by certificate authorities, like Symantec, to verify the identity of websites and encrypt data transmitted between the user's device and the website's server. If a certificate is compromised or issued improperly, it could allow malicious actors to intercept or modify the data being transmitted, leading to potential security breaches and data theft. Chrome is one of the most widely used web browsers, with a market share of over 60% globally.

As a result, the Chrome security team plays a critical role in monitoring the trustworthiness of certificates to ensure the security of its users. If Chrome were to continue trusting certificates issued by Symantec despite reports of improper issuance, it would compromise the security of millions of Chrome users. In addition to monitoring certificates, the Chrome security team also implements measures like blocking unsecured connections and warning users about potentially unsafe websites.

The question was incomplete, Find the full content below:

On September 11, 2017, the Chrome security team announced a plan to stop trusting certificates issued from the Symantec certificate authority. The Chrome team announced the plan after reports that some of Symantec's certificate issuing organizations were issuing certificates to domains that weren't properly verified.

Why is it so important that the Chrome team monitors the trustworthiness of certificates?

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A scenario where a router on the border of your network detects a packet with a source address from an internal client, but the packet was received on the internet-facing interface is categorized: a spoofing attack.

Spoofing is a type of attack in which a malicious actor attempts to disguise their identity or masquerade as another entity in order to gain unauthorized access or to deceive another user. In this case, the attacker has spoofed the source address of the packet to make it appear as though it is coming from an internal client, even though it is actually coming from the internet-facing interface.

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An attribute is an attribute that has no value for at least one entity instance already defined. This type of attribute is known as a null value attribute. A null value attribute is an attribute that has no value or is unknown for a given entity instance.

For example, consider an entity named 'Person' that has attributes such as 'Name,' 'Age,' and 'Gender.' Now, let's assume that there is one person for whom the 'Age' attribute is not known. In this case, the 'Age' attribute for this particular person would be considered a null value attribute.

In conclusion, a null value attribute is an attribute that has no value or is unknown for a given entity instance. It is important to understand this concept in the context of database management systems as it helps in data modeling and database design.

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In the first example, Mariana's goal is related to her career. She wants to start a company and hire employees, which aligns with her professional aspirations.

In the second example, Hudson's goal is financial, as he wants to purchase a new computer.

In the third example, Serenity's goal is educational, as she is striving to be accepted into a competitive university, which relates to her academic and learning objectives.

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True, A biometric system is a system that analyses physical and behavioural traits for authentication, identification, and access control purposes.

physically disabled users might have difficulty with biometric system accessibility, specifically with performance-based biometrics. These systems use unique physical and behavioural characteristics of individuals, such as fingerprints, facial recognition, voice recognition, iris or retina patterns, and hand geometry, to identify them. Biometric systems are used in many industries, including healthcare, banking, travel, and law enforcement. Physically disabled users may have difficulty using biometric systems, particularly performance-based biometrics. It is because these systems require specific movements or actions that a physically disabled person may not be able to perform. For example, a person with an amputated arm may have difficulty providing a handprint, while someone with a visual impairment may not be able to look directly at a camera. As a result, alternative methods such as password or PIN-based authentication should be provided for those who are physically disabled.

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The study aims to assess the level of awareness of PULONG BUHANGIN NATIONAL HIGH SCHOOL students regarding the negative effects of online games due to growing concerns about potential harm associated with excessive online gaming.

What is online gaming?
Online gaming refers to playing video games that are connected to the internet and can be played by multiple players from different locations. This can include games that are played on consoles, computers, or mobile devices and can involve both single-player and multiplayer games. Online gaming has become increasingly popular in recent years due to the widespread availability of high-speed internet and the growth of online gaming communities.


As such, it is important to assess the level of awareness of students towards the negative effects of online games, as this can inform the development of interventions and strategies to mitigate these effects. By understanding the level of awareness of students towards the negative effects of online games, educators and policymakers can develop targeted educational programs and initiatives to promote responsible gaming habits and raise awareness about the potential harm of excessive gaming. This study can also provide insights into the factors that may influence students' attitudes towards online gaming and help identify areas for further research and intervention.

Therefore, it is important to understand the level of awareness among students at PULONG BUHANGIN NATIONAL HIGH SCHOOL regarding the negative effects of online games. By conducting this study, the school and the community can gain insights into the level of awareness of students and develop appropriate interventions to address any gaps in knowledge or understanding. This study can also serve as a basis for developing educational programs or policies aimed at promoting responsible online gaming habits among young individuals, ultimately helping to mitigate the potential harm associated with excessive online gaming.

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