True. Functions that are not thread-safe can lead to data races, where two or more threads access shared data concurrently and produce unpredictable results.
In a multithreaded environment, multiple threads may access shared data simultaneously. If a function is not designed to handle this situation, it may result in a data race. Data races occur when two or more threads access the same memory location, and at least one thread modifies the data. If the threads don't synchronize access to the data, the order in which they access the data is undefined, and the result is unpredictable. This can cause bugs that are hard to detect and reproduce. Therefore, it's crucial to ensure that functions that operate on shared data are designed to be thread-safe.
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examples of volatile memory are mass storage devices such as disks and tapes. _________________________
The statement is false. Volatile memory is a type of computer memory that requires power to maintain its contents. It is usually used to store temporary data or code that is currently in use by the computer.
Examples of volatile memory include Random Access Memory (RAM), cache memory, and registers. Mass storage devices such as disks and tapes, on the other hand, are non-volatile memory devices, which means that they retain their contents even when the power is turned off. Non-volatile memory is commonly used for long-term storage of data, such as files, programs, and operating system code.
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When a generic class is instantiated without specifying a type argument, it is said to have a ___
When a generic class is instantiated without specifying a type argument, it is said to have a "raw type".
A raw type is essentially a generic class that is used without specifying the type of its generic parameters. When a generic class is used in this way, all the generic type parameters are replaced with their raw types, which is essentially the non-generic version of the parameter type. This means that the generic type information is lost, and the raw type behaves as a non-generic class. Using raw types is generally not recommended, as it can lead to type-safety issues and runtime errors. It is recommended to always specify the type argument when instantiating a generic class, to ensure that the type-checking and type-inference mechanisms of the Java compiler can do their job correctly.
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In the following procedure, the parameter numList is a list of numbers and the parameters j and k are integers.
PROCEDURE swapListElements(numList, j, k)
{
newList ââ numList
newList[j] ââ numList[k]
newList[k] ââ numList[j]
RETURN(newList)
}
Which of the following is the most appropriate documentation to appear with the swapListElements procedure?
Responses
answer choices
A. Returns a copy of numList with the elements at indices j and k interchanged.The value of j must be between 0 and the value of k, inclusive.
B. Returns a copy of numList with the elements at indices j and k interchanged.The values of j and k must both be between 1 and LENGTH(numList), inclusive.
C. Interchanges the values of the parameters j and k.The value of j must be between 0 and the value of k, inclusive.
D. Interchanges the values of the parameters j and k.The values of j and k must both be between 1 and LENGTH(numList), inclusive.
The most appropriate documentation to appear with the swapListElements procedure is A. Returns a copy of numList with the elements at indices j and k interchanged. The value of j must be between 0 and the value of k, inclusive.
Why is this answer correct?The value for j must remain within 0 and the extent of k, inclusively. This elucidates the purpose of this utility and lists the declared input parameters proportional to the fundamentals of those values.
Moreover, it clears up that the procedure returns a distinct list, instead of intensifying the data put forward
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5505 - Which maximum range factor decreases as weight decreases?-altitude-airspeed-angle of attack
Airspeed maximum range factor decreases as weight decreases. The correct answer is b) "airspeed".
As weight decreases, the maximum range of an airplane decreases as well. To maintain the same range, the airplane needs to fly at a lower true airspeed. This is because as weight decreases, the airplane requires less lift to maintain level flight, and therefore it can fly at a lower angle of attack and lower airspeed. Lower airspeed means less kinetic energy, which means less range. Thus, the maximum range factor that decreases as weight decreases is airspeed.
The correct answer is b) "airspeed".
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What are the most popular concurrency models?
The most popular concurrency models include the shared memory model, message passing model, and actor model.
The shared memory model involves multiple threads or processes sharing a common memory space and communicating through that shared memory. The message passing model involves passing messages between different threads or processes to communicate. The actor model involves concurrent computation units, called actors, which communicate with each other through message passing. Each of these models has its own advantages and disadvantages and can be used in different scenarios depending on the requirements of the system being developed.
The most popular concurrency models include:
1. Threads: This model uses multiple threads of execution within a single process. Threads share the same memory space, making communication between them relatively easy, but requiring careful synchronization to avoid issues like race conditions and deadlocks.
2. Message Passing: In this model, independent processes or actors communicate by exchanging messages. This can be done using various mechanisms, such as message queues or channels. The main advantage of this model is the clear separation of concerns, as each process or actor is responsible for a specific task.
3. Event-driven: The event-driven model is based on the concept of events and event handlers. When an event occurs, a corresponding event handler is triggered, which performs a specific action. This model is particularly useful for managing asynchronous operations and is commonly used in GUI applications and web servers.
4. Data Parallelism: In this model, data is divided into smaller pieces, and each piece is processed concurrently by different execution units, typically on parallel hardware like GPUs. This model is particularly suitable for tasks that involve processing large amounts of data, like in scientific simulations or machine learning.
These models can be combined in various ways to suit specific application needs.
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Both Windows _______________ and iTunes have a feature to share media files on a local network.
Both Windows "Media Streaming" and iTunes "Home Sharing" have a feature to share media files on a local network. Windows is a family of operating systems developed by Microsoft Corporation. The first version of Windows was released in 1985, and since then, many different versions and editions have been released.
Windows is the most widely used operating system in the world, with over 1.5 billion active users. It is used on a variety of devices, including desktop and laptop computers, tablets, and smartphones.
Some of the key features of Windows include:
Graphical user interface (GUI): Windows is known for its user-friendly GUI, which allows users to interact with the operating system using a mouse and keyboard.
Multitasking: Windows allows users to run multiple applications simultaneously, making it easy to switch between different tasks and programs.
Compatibility: Windows is compatible with a wide range of software applications and hardware devices, making it easy to find software and hardware that works with the operating system.
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What could be one use for a business report from a manufacturer?
Question 3 options:
share details of the new employee benefits program
share details of a job offer, such as start date and salary
share quarterly earnings with investors
share an apology with a disgruntled customer
help
The most appropriate use for a business report from a manufacturer would be to share quarterly earnings with investors
Write a short note on business reports.Business reports are formal documents that present information and data about a specific business topic or issue. They are often used to analyze business operations, evaluate performance, and make informed decisions. Business reports typically follow a standard format and include an introduction, methodology, results, and conclusions.
The purpose of business reports may vary, including providing information to stakeholders, informing business decisions, identifying areas for improvement, or documenting processes and procedures. Business reports may include various types of data such as financial information, market trends, customer feedback, or performance metrics.
Business reports can be generated for internal or external audiences and can be presented in different formats such as written reports, presentations, or visual aids. Overall, business reports are an important tool for businesses to communicate information and data effectively and make informed decisions.
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A computer only has 2GB of RAM. Alicia says that virtual memory can be used instead of adding more RAM.
(i) Explain how virtual memory can compensate for the lack of RAM in Alicia's computer.
(ii) Explain why it would be beneficial for Alicia to get more RAM instead of relying on virtual memory.
Answer:
(i) Virtual memory is a technique used by computers to extend the available memory beyond the physical RAM installed in the computer. It does this by temporarily transferring data from the RAM to the hard disk, freeing up space in the RAM for other tasks. When an application needs data that has been moved to the hard disk, it is swapped back into the RAM. This process is done automatically by the operating system and is transparent to the user.
(ii) Virtual memory is a useful technique when a computer does not have enough RAM to run all the necessary programs at once, but it has some drawbacks. When the operating system has to swap data between the RAM and the hard disk, it can slow down the computer's performance. This is because accessing the hard disk is slower than accessing the RAM. In addition, relying on virtual memory too heavily can shorten the life of the hard disk. Therefore, it would be beneficial for Alicia to get more RAM instead of relying on virtual memory, as this would improve her computer's performance and reduce wear and tear on her hard disk.
1)It is a UML convention to denote the name of an abstract class in ________.
Group of answer choices
bold
italics
a diamond
There is no convention of the UML to denote abstract classes-they are listed just as any other class
In accordance with the UML convention, the name of an abstract class is denoted in italics.
Unified Modeling Language (UML) is a graphical language used to model software systems. It is a standardized modeling language used in software engineering to visualize, design, construct, and document software systems. UML uses a set of graphical symbols and conventions to represent different aspects of a system, such as classes, objects, relationships, and behaviors. These symbols and conventions provide a standardized way to communicate complex system designs and help developers to better understand and manage the software development process. UML is used by developers to design and document software systems, as well as by analysts to model and understand complex systems. UML is also used in software testing, project management, and system maintenance. There are several types of UML diagrams, including class diagrams, sequence diagrams, activity diagrams, and use case diagrams.
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Write the code for invoking a static method named sendNumber , provided by the DataTransmitter class.There is one int argument for this method.Invoke this method and use the number 5 as an argument.
To invoke a static method named send Number provided by the Data Transmitter class, we need to follow some steps. First, we need to import the Data Transmitter class in our program. After that, we can call the static method by using the class name followed by the method name.
The syntax to invoke a static method is as follows:
Class Name.Method Name(arguments);
In our case, the class name is Data Transmitter and the method name is send Number, which takes an int argument. So, the code to invoke this method and pass the number 5 as an argument would be as follows:
Data Transmitter.send Number(5);
Here, we are calling the static method send Number of the Data Transmitter class and passing 5 as an argument. The method will receive this value as an input and perform its intended task.
It is important to note that since the method is static, we do not need to create an object of the Data Transmitter class to invoke it. We can directly access the method using the class name. Also, static methods are shared among all objects of the class, so any changes made to a static variable or method will affect all objects of the class.
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Name the fifty reserved words/ keywords in Java?
The reserved key words in Java Programming Environment are given below.
What are reserved key words in Java?Reserved key words are normal words in English Language which in Java may not be used in their literal context or used as identifiers for classes or variables or other programming elemetns.
some of them are:
abstract assert boolean break byte case
catch char class const continue default
double do else enum extends false
final finally float for goto if
implements import instanceof int interface long
native new null package private protected
public return short static strictfp super
switch synchronized this throw throws transient
true try void volatile while.
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When it comes to finding sources to act as owners of claims, the media tend to prefer...
When it comes to finding sources to act as owners of claims, the media tend to prefer individuals who are credible, have expertise in the topic at hand, and are willing to provide quotes or statements that support the angle or perspective of the article.
The media also tends to look for sources that have a strong reputation and are well-respected within their respective fields. Additionally, sources that have a compelling personal story or have been directly affected by the issue being covered may also be preferred by the media. Overall, the media seeks sources that will provide insightful and informative commentary that will engage and inform their audience.
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To change Proofing tool settings, first display the :
To change Proofing tool settings, first display the "Review" tab in the ribbon.
The Review tab is where the proofing tools, such as spell check and grammar check, are located in Microsoft Office applications such as Word, Excel, and PowerPoint. To change the settings for these tools, you must first navigate to the Review tab.
Once you are on the Review tab, you can access the proofing tools and modify their settings by clicking on options such as "Spelling & Grammar" or "Thesaurus." From there, you can adjust the proofing language, turn on or off certain features, and customize the dictionary.
It is important to note that the steps to access the Review tab may vary slightly depending on the version of Microsoft Office you are using.
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46.5% complete question an intruder monitors an admin's unsecure connection to a server and finds some required data, like a cookie file, that legitimately establishes a session with a web server. what type of attack can the intruder perform with the cookie file?
The intruder can perform a session hijacking attack with the cookie file, using the legitimate session established with the web server to gain unauthorized access to sensitive information or perform actions on behalf of the legitimate user. This is why it's important to always use secure connections and encrypt sensitive data, including cookies, to prevent these types of attacks.
The intruder can perform a session hijacking attack with the cookie file. With the cookie file, the intruder can impersonate the legitimate user and gain access to the user's account and sensitive information. Session hijacking is a type of attack in which an attacker steals a session identifier or cookie to hijack a valid user session. The attacker can then use the stolen session identifier to impersonate the user and perform unauthorized actions on the user's behalf. It is important to always use secure connections, such as HTTPS, to protect sensitive information and prevent session hijacking attacks.
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ou can use this ArrayList class method to insert an item at a specific location in an ArrayList.
set
store
add
insert
the "add" method from the ArrayList class to insert an item at a specific location in an ArrayList.
Your answer: add
To insert an item at a specific location in an ArrayList, you can use the "insert" method provided by the ArrayList class. This method allows you to specify the index at which you want to insert the new item and will shift any existing items to make room for it. For example, if you have an ArrayList called "myList" and you want to insert the value "newValue" at index 2, you could use the following code:
myList.insert(2, "newValue");
Alternatively, you could also use the "set" method to replace an existing item at a specific index with a new value, or the "add" method to simply store a new item at the end of the ArrayList. However, if you specifically need to insert an item at a certain location, the "insert" method is the best option.
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_______ are/is electronic billboards that promote a product or a vendor.Pop-under adsSpamPop-up adsBanners
Banners are electronic billboards that promote a product or a vendor.
Banners are a type of online advertising that consists of a rectangular graphic display that appears on a web page. They typically contain an image, some text, and a link to the advertiser's website or landing page. Banners are designed to attract the attention of web users and encourage them to click through to the advertiser's site, where they can learn more about the product or service being promoted.
Banners are one of the most common forms of online advertising and can be found on a wide variety of websites, including news sites, social media platforms, and e-commerce sites. They can be static or animated and can come in a range of sizes and shapes, depending on the website and the advertiser's preferences.
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Banners are electronic billboards that promote a product or a vendor.
Banners are a type of online advertising that consists of a rectangular graphic display that appears on a web page. They typically contain an image, some text, and a link to the advertiser's website or landing page. Banners are designed to attract the attention of web users and encourage them to click through to the advertiser's site, where they can learn more about the product or service being promoted.
Banners are one of the most common forms of online advertising and can be found on a wide variety of websites, including news sites, social media platforms, and e-commerce sites. They can be static or animated and can come in a range of sizes and shapes, depending on the website and the advertiser's preferences.
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suppose you have a list of numbers stored in consecutive locations in a java array. what is the worst-case time complexity of finding a given element in the array using linear search?
Linear search is a simple search algorithm that sequentially searches each element in an array until the target element is found. In the worst-case scenario, the element being searched for is located at the end of the array, or not present at all, requiring the algorithm to search through all n elements of the array.
Since the algorithm has to examine each element in the array, the worst-case time complexity of linear search is O(n), where n is the number of elements in the array. This means that the time it takes to complete the search will increase linearly with the size of the input array.
For instance, if the array has 200 elements, it will take linear search up to 200 comparisons to find a given element in the array. In the worst-case scenario, if the target element is not present in the array, the algorithm will have to traverse all 200 elements before determining that the element is not present.
In summary, the worst-case time complexity of finding a given element in an array using linear search is O(n), where n is the number of elements in the array. Therefore, the larger the array, the longer it will take to complete the search using linear search.
The worst-case time complexity of finding a given element in a Java array using linear search can be described in terms of Big O notation, which is used to express the upper bound of an algorithm's running time.
To summarize, the worst-case time complexity of finding a given element in a Java array using linear search is O(n), indicating that the algorithm's running time grows linearly as the size of the input increases.
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MPI programs have to be run with more than one process (T/F).
True. MPI (Message Passing Interface) programs are designed to run in parallel on a distributed memory system, where multiple processes can communicate and collaborate to solve a problem.
MPI is a widely used standard for writing parallel programs. It allows programmers to create a set of processes that can communicate and share data with each other. The processes can run on multiple nodes of a cluster or on a single multi-core machine. To take advantage of the parallelism, an MPI program needs to be run with multiple processes. Each process can work on a subset of the problem, and then the results can be combined to produce the final output. Running an MPI program with only one process would limit the program to a single thread of execution and negate the benefits of parallel computing.
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for binsearch, which of the following assertions will be true following every iteration of the while loop? group of answer choices a[low]
Answer:
It is not possible to determine which assertion will be true following every iteration of the while loop for binsearch without knowing the specific implementation of the algorithm. The while loop could consist of various conditions and operations that would affect the truth value of any given assertion.
T/F infinitely recursing directories is a symptom of logical damage to a file system.
False. Infinitely recursing directories can be caused by programming errors or malicious code, rather than logical damage to a file system.
Infinitely recursing directories, also known as infinite loops, occur when a program enters a loop and repeats the same set of instructions endlessly, without any way to exit. This can be caused by programming errors or malicious code, rather than logical damage to a file system. For example, a programming error could cause a program to create a directory within a directory, and then try to access the new directory it created, leading to an infinite loop. Similarly, a virus or malware could be designed to create infinite loops as a way to slow down or crash a system. Logical damage to a file system typically refers to issues such as bad sectors or corrupted files, which can cause data loss or other problems, but not necessarily infinite looping.
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The U.S. government now has a new branch of computer crime called __________________________________________________.
The U.S. government now has a new branch of computer crime called computer hacking and intellectual property (CHIP)
The Department's continued efforts to stop cybercrime and intellectual property theft have progressed to the new CHIP units as the next step. The Department established the Criminal Division's Computer Crime and Intellectual Property Section (CCIPS) in 1991.
Section is made up of 22 attorneys with expertise in these offenses who coordinate prosecution of computer intrusion and intellectual property cases, provide national training, and guidance. The highly skilled network of prosecutors at CCIPS and the US Attorneys' Offices will be supplemented by the CHIP team members.
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What does the Python expression 3 * "A" evaluate to?
a) It produces an error.
b) "3A"
c) "3A3A3A"
d) "AAA"
The Python expression 3 * "A" evaluates to: d) "AAA". In this case, "A" is a string with a single character "A", and 3 is an integer. So 3 * "A" will repeat the string "A" three times, resulting in the string "AAA".
In Python, the * operator is used for multiplication, but it can also be used with strings to perform string repetition or concatenation. When the * operator is used with a string on the left-hand side and an integer on the right-hand side, it repeats the string a specified number of times, as indicated by the integer.
Python is a popular high-level, interpreted, and general-purpose programming language. It was created by Guido van Rossum and first released in 1991. Python is known for its simplicity, readability, and versatility, which makes it widely used for a wide range of applications, including web development, scientific computing, data analysis, artificial intelligence, machine learning, automation, and more.
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T/F: Hadoop is good at storing semistructured data.
True. Hadoop is good at storing and processing semistructured data.
Hadoop is good at storing and processing semistructured data. Semistructured data refers to data that does not follow a fixed schema or structure like traditional relational databases. Hadoop's Hadoop Distributed File System (HDFS) can store large amounts of unstructured and semistructured data, such as log files, social media data, and sensor data. Hadoop's MapReduce programming model can process these large datasets in parallel, making it suitable for big data processing. Additionally, Hadoop provides various tools, such as Hive, Pig, and HBase, that allow users to query and analyze the data stored in Hadoop using SQL-like syntax or other programming languages.
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Which two tasks are functions of the presentation layer? (Choose two.)
compression
addressing
encryption
session control
authentication
The presentation layer is responsible for the formatting and delivery of data to the application layer, which means that it plays a crucial role in ensuring that data is transmitted correctly and securely.
There are several functions of the presentation layer, but two of the most important tasks that it performs are encryption and authentication.Encryption is the process of converting plain text into a code or cipher that cannot be easily read or understood by unauthorized users. The presentation layer is responsible for encrypting data to protect it from interception or unauthorized access during transmission. This is particularly important when sensitive information such as passwords, financial transactions, and personal data are being transmitted over a network.Authentication is the process of verifying the identity of a user or device. The presentation layer provides authentication services by verifying the digital certificate of the sender and receiver of data. This ensures that the data is transmitted only to authorized parties and prevents unauthorized access to sensitive information.In summary, the presentation layer performs many functions that are essential to secure and reliable data transmission. Two of the most important tasks that it performs are encryption and authentication, which are critical for protecting data during transmission and ensuring that it is only accessible by authorized users.For such more question on authentication
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The term ________ implies that either all transactions relate to a traditional relational DBMS are processed or none of them are processed.Consistent Atomic DurableIsolatedIronic
The term b) "Atomic" implies that either all transactions related to a traditional relational DBMS are processed or none of them are processed.
This is known as atomicity, which is one of the ACID (Atomicity, Consistency, Isolation, Durability) properties of a database. Atomicity ensures that if a transaction fails, any changes made to the database during that transaction are rolled back to their original state, so that the database remains consistent. This ensures that the database remains reliable even in the face of unexpected events or errors.
Option b is answer.
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_______________ installation is the best installation method for a large organization with hundreds of computers that require new software at the same time.
Network installation, in which the software is installed from a central place onto all machines at once, is the ideal installation technique for a large organisation with hundreds of PCs that need new software at the same time.
When a large organization needs to install new software on hundreds of computers at the same time, network installation is the most efficient method. Network installation involves setting up a central server or repository that hosts the software installation files, and then deploying the software across the network to all of the organization's computers simultaneously.This method saves time and reduces the need for manual intervention, as IT staff can remotely initiate the installation process and monitor the progress from a central location. Additionally, network installation ensures consistency and uniformity across all installations, reducing the likelihood of errors or compatibility issues.Overall, network installation is the most efficient and reliable way to deploy software across a large organization with many computers.
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The columns in a database are also called ________. RecordsTables FilesFieldsVerticals
The columns in a database are also called fields.
These fields represent specific attributes or properties of the data being stored in the database. They are essential components of a database table, which is a collection of related records. Each record in the table consists of multiple fields, representing different aspects of the data. Fields help in organizing and structuring the data, making it easier to manage and analyze.
For example, in a database containing information about students, a table might have fields such as Student ID, Name, Age, and Major. Each student would be a record in the table, with their unique information entered into the corresponding fields.
In summary, fields (columns) are a critical part of a database, allowing users to store and manage structured data efficiently. By organizing data into records and fields within tables, databases can effectively store, retrieve, and analyze information to support various applications and processes.
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List three public interest and benefit activities for which the disclosure of protected health information is allowed without authorization.
The three public interest and benefit activities for which the disclosure of protected health information is allowed without authorization are Public Health Activities, Law Enforcement Purposes, and Research Purposes.
1. Public Health Activities: Disclosure of PHI is allowed for purposes related to public health, such as preventing or controlling disease, injury, or disability. This may involve reporting to public health authorities or authorized entities.
2. Law Enforcement Purposes: PHI can be disclosed without authorization to law enforcement officials for specific purposes, such as to comply with a court order, identify or locate a suspect, or prevent a serious threat to public safety.
3. Research Purposes: In some instances, PHI can be disclosed without authorization for research purposes, provided that the research has been approved by an institutional review board or privacy board and necessary safeguards are in place to protect individuals' privacy.
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which of the following types of operating systems would most likely be found on a laptop computer? a. mobile operating system b. desktop operating system c. multithreading operating system d. server operating system
The type of operating system that would most likely be found on a laptop computer is option b. desktop operating system.
A laptop computer would most likely use a desktop operating system. The most likely type of operating system to be found on a laptop computer is a desktop operating system. Mobile operating systems are typically found on smartphones and tablets, while multithreading operating systems are designed for high-performance computing environments. Server operating systems are used for managing servers in data centres. However, depending on the intended use of the laptop, it may also have a mobile operating system installed as a secondary option.
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2) viruses that load from usb drives left connected to computers when computers are turned on are known as
Viruses that load from USB drives left connected to computers when computers are turned on are known as "USB-based viruses" or "USB-borne viruses."
These types of viruses are designed to spread through USB drives by creating a copy of themselves on the drive and then infecting any other computer that the drive is connected to. When a USB drive infected with this type of virus is left connected to a computer when the computer is turned on, the virus is loaded into the computer's memory and can begin to infect files and spread to other connected drives or devices.
To prevent USB-based viruses, it is recommended to use reputable antivirus software, avoid using unknown or suspicious USB drives, and always scan USB drives with antivirus software before using them. Additionally, it is important to safely eject USB drives before disconnecting them from a computer to avoid any potential data loss or corruption.
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Viruses that load from USB drives left connected to computers when computers are turned on are known as "USB-based viruses" or "USB-borne viruses."
These types of viruses are designed to spread through USB drives by creating a copy of themselves on the drive and then infecting any other computer that the drive is connected to. When a USB drive infected with this type of virus is left connected to a computer when the computer is turned on, the virus is loaded into the computer's memory and can begin to infect files and spread to other connected drives or devices.
To prevent USB-based viruses, it is recommended to use reputable antivirus software, avoid using unknown or suspicious USB drives, and always scan USB drives with antivirus software before using them. Additionally, it is important to safely eject USB drives before disconnecting them from a computer to avoid any potential data loss or corruption.
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