The majority of contemporary CPUs offer the two execution modes of kernel mode and user mode. When operating in kernel mode, the CPU can carry out every instruction in its instruction set and utilise every piece of hardware.
How does the fundamental contrast between kernel mode and user mode work?In the following way, the difference between kernel mode and user mode offers a basic sort of protection. Some instructions can only be executed while the CPU is running in kernel mode. Similar to software, access to hardware devices is only possible when the programme is running in kernel mode.
What exactly do the terms "user mode" and "kernel mode" mean?Describe the benefits of having two distinct modes for operating system design. In the User mode, which is the default setting, the process has restricted access. In the kernel mode, a privileged mode, the process has full access to all system resources, including hardware, memory, etc.
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draw an er diagram for an airline reservation system. this system holds information of airports, airplane types, airplanes, flights, flight legs, and seats reserved for a flight leg. the system handles information such as:
A diagram for an airline reservation system and this system holds information of airports Airport: airportID, airportName, airportLocation
Airplane Types: typeID, typeName
Airplanes: planeID, planeTypeID
Flights: flightID, originAirportID, destAirportID, departureTime, arrivalTime
Flight Legs: flightLegID, flightID, planeID
Seats Reserved: seatReservationID, flightLegID, seatNumber
What uses System Information?displays the operating system configuration, security information, product ID, and hardware properties (such as RAM, disk space, and network cards) in detail about a computer and its operating system.
What kinds of information systems exist?An organization's data collection, transfer, organization, and storage are all supported by a variety of information technology systems, including computers, software, databases, communication systems, the internet, and other devices.
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[TRUE or FALSE] you can use the formulas tab to change the excel view, to hide the heading, gridlines and ruler.
False. The Formulas tab can be used to create and edit formulas, but not to change the view of Excel.
What is Excel?
Excel is a powerful spreadsheet software developed by Microsoft Corporation. It is primarily used to store, analyze and manipulate data. It is also used to create charts and graphs to visualize data. Excel has a powerful calculation engine which can perform complex calculations, such as financial calculations and statistical analysis. It also has functions to automate tasks and make data processing easier. Excel has powerful data analysis capabilities, such as the ability to sort, filter, pivot and chart data. It also supports macros, which allow users to write code to automate tasks.
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a) the following table shows the execution time of five routines of a program (25%) routine a (ms) routine b (ms) routine c (ms) routine d (ms) routine e (ms) 4 14 2 12 2 1. find the total execution time, and how much it is reduced if the time of routines a, c, & e is improved by 15%. 2. by how much is the total time reduced if routine b is improved by 10%?
the program's overall execution time would be lowered by 0.2 ms, or around 0.6%, overall. the whole time would be cut by 1.4 milliseconds, or around 4.1%.
The program's overall execution time may be calculated by summing the timings of all five procedures. The execution took 4 + 14 + 2 + 12 + 2 = 34 ms in total. The revised execution timings of procedures a, c, and e would be 3.4 ms, 1.7 ms, and 1.7 ms, respectively, if their times were reduced by 15%. With these enhancements, the overall execution time would be 3.4 + 14 + 1.7 + 12 + 1.7 = 33.8 ms. As a result, the overall execution time would be decreased by 0.2 ms, or around 0.6%. Routine B's updated execution time, assuming a 10% improvement, would be 14 - (0.1 * 14) = 12.6 ms. With this optimization, the overall execution time would be 4 + 12.6 + 2 + 12 + 2 = 32.6 ms.
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which of the following events leads to an increase in the supply of desk top computers, ceteris paribus? select an answer and submit. for keyboard navigation, use the up/down arrow keys to select an answer. a a decrease in the cost of producing desk top computers b a decrease in the number of desk
The event that leads to an increase in the supply of desktop computers, ceteris paribus, is a decrease in the cost of producing desktop computers.
When the cost of production decreases, firms are able to produce more desktop computers for the same cost, and as a result, they are able to supply more desktop computers at each price level. This shift in the supply curve would cause a movement along the demand curve, resulting in a lower price for desktop computers and a higher quantity supplied.On the other hand, a decrease in the number of desk does not directly affect the supply of desktop computers, since the number of desks is not directly related to the production or supply of computers. However, a decrease in the number of desks could indirectly affect the demand for desktop computers, as people may be less likely to purchase or use computers if they do not have a desk to place them on. This could potentially lead to a decrease in the price of desktop computers and a lower quantity supplied, but it would not directly increase the supply of desktop computers.To know more about computer visit:
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assume that the turtlebot uses a* tree search with manhattan distance heuristic (using path lengths) to generate the navigation path. what will be the path returned?
The environment as well as the starting and goal points will influence the return path. Taking into account the distances between the start and goal points as well as any obstacles in the way
A tree search using the Manhattan distance heuristic will typically return the path with the shortest overall path length.
Dot the turtle does what?The dot() function is used to draw a circular dot with some color and a particular size. The maximum of pensize+4 and 2*pensize is used if the size is not specified.
In Python, what does "turtle" stand for?By providing users with a virtual canvas, turtle, a pre-installed Python library, enables them to create pictures and shapes. The library takes its name from the turtle-shaped onscreen pen that is utilized for drawing.
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which type of hacker attempts to probe a system with an organization's permission for weaknesses and then privately report back to that organization?
"Ethical hackers" or "decent hackers," often known as white hat hackers. They exploit computer networks or systems to look for security flaws that can be fixed.
White hat hackers have a wealth of networking and computer knowledge, and practically every firm may profit from the skills and knowledge of security experts. IT companies, especially those that deal with cybersecurity, are welcome to hire ethical hackers to perform various penetration tests, bug bounty programs, and other services.
IT professionals should look for White Hat hacker employment by earning IT Security Certification to bring a wide range of skills to the table if they want a safer career with lots of possibilities for progress.
Certain businesses commonly use white hat hackers. The experts then begin identifying security weaknesses and enhancing security.
To stop invasions, they use their skills. Additionally, they usually operate in the background to stop attacks in real-time to safeguard services and assets. In addition, they could focus on analyzing cyber threats, and revealing weaknesses to organize and direct the prioritization of vulnerability rectification.
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assume the compiled programs run on two different processors. if the execution times on the two processors are the same, how much faster is the clock of the processor running compiler a's code versus the clock of the processor running compiler b's code?
Assuming that the only difference between the two compiled programs is the choice of compiler, then the difference in clock speed between the two processors running the compilers could potentially affect the resulting execution times.
If the clock speed of the processor running compiler A's code is faster than the clock speed of the processor running compiler B's code, then the resulting compiled program from compiler A may have a shorter execution time. Conversely, if the clock speed of the processor running compiler B's code is faster than the clock speed of the processor running compiler A's code, then the resulting compiled program from compiler B may have a shorter execution time. Assuming that the only difference between the two compiled programs is the choice of compiler, then the difference in clock speed between the two processors running the compilers could potentially affect the resulting execution times.
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the cout object represents the a. standard output stream b. file output stream c. common output stream d. dedicated output stream
The count object represents the standard output stream. It is an object of the stream class that represents the stream of standard output that is focused on narrow characters.
What is standard output stream?Standard streams are connected input and output communication channels between a computer programme and its environment when it starts to run. Standard input (stdin), Standard output (stdout), and Standard error are the names of the three input/output (I/O) connections (stderr).
Standard streams abstract from the fact that initial I/O occurred through a physically connected system console (input via keyboard, output via monitor). The streams that are connected to the text terminal where the interactive shell is running when a command is run can be changed using redirection or a pipeline. A child process generally takes on its parent's standard streams.
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Will MARK BRAINLIEST TO WHOEVER GETS THIS CORRECT, PLS HELP!! PLS WRITE CODE IN PYTHON. CHECK THE IMAGE I PUT THERE.
Answer:
def findLastBinary(s):
binaryString = ""
for c in s:
binaryString += bin(ord(c))[2:].zfill(8)
n = 0
while(bin(n)[2:] in binaryString):
n = n + 1
return n-1
s = input("Enter a string: ")
n = findLastBinary(s)
print("The highest binary string found is", bin(n)[2:])
Explanation:
bin(n) converts an integer to binary
the [2:] index is to skip the "0b" prefix that is otherwise prepended.
zfill(8) left fills the ASCII number with zeros
describe a fast recursive algorithm for reversing a singly linked list l, so that the ordering of the nodes becomes opposite of what it was before
Answer:
struct Node {
int data;
Node *next;
};
Node *reverse_list(Node *head) {
if (head == nullptr || head->next == nullptr) {
return head;
}
Node *new_head = reverse_list(head->next);
head->next->next = head;
head->next = nullptr;
return new_head;
}
Explanation:
The reverse_list function takes a pointer to the head of the list as input and returns a pointer to the new head of the reversed list. The function works as follows:
If the list is empty or has only one node, then it returns the head, since the list is already reversed.Otherwise, it calls itself recursively with the next node in the list.After the recursive call returns, the current node's next pointer is updated to point to the previous node, effectively reversing the direction of the link.Finally, the function returns the new head of the reversed list.how does the word length of a computer affect what the computer is able to compute? that is, is it a valid argument, in light of what you learned in chapter 1, to say that a computer with a larger word size can process more information and therefore is capable of computing more than a computer with a smaller word size?
What a computer can compute is unaffected by the length of the words. Although it will take longer, a computer with a shorter word length may perform the same calculation as one that has a higher word length.
A computer is what?A computer is an electronic device used to change data or information. You might already be aware of the fact that you are able are using a computer to type documents, send emails, play games, and surf the web.
What roles do computers play?A computer system's four primary equipment functions are as follows: processing, output, and storage.
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Symbols that store values are called what?
what is the minimum amount of available buffer space advertised at the received for the entire trace? does the lack of receiver buffer space ever throttle the sender? g
The minimum amount of available buffer space advertised at the receiver Information for the entire trace is zero. Yes, the lack of receiver buffer space can throttle the sender if the receiver does not have enough buffer space to handle the incoming traffic.
The minimum amount of available buffer space advertised at the receiver for the entire trace is zero. This means that at some point in the trace, the receiver buffer was completely filled, and no more data could be accepted. When the receiver buffer is full, the sender will be throttled and will need to reduce their transmission rate in order to allow the receiver to process the data in their buffer. This can cause a decrease in performance if the sender is sending data faster than the receiver can handle. In the case of buffer overflow, the sender will be forced to decrease the transmission rate until the receiver is able to keep up with the data stream. The lack of receiver buffer space can also cause packet loss if the sender is unable to reduce their transmission rate fast enough to prevent the buffer from overflowing.
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why might you use an array instead of an arraylist?
Arrays and ArrayLists are both used to store and manage collections of data in programming, but there are some cases where you might use an array instead of an ArrayList.
Where you might use an array instead of an ArrayList?
Here are some possible reasons:
Fixed-size requirement: Arrays have a fixed size that cannot be changed once they are created, whereas ArrayLists can grow and shrink dynamically as elements are added or removed. If you know in advance that you need to store a fixed number of elements, an array might be more efficient than an ArrayList since it does not need to dynamically resize.Performance considerations: Since arrays are a lower-level construct than ArrayLists, they can offer better performance in certain situations. For example, when iterating over a large collection of elements, an array might be faster than an ArrayList because of lower overhead and memory usage.Memory limitations: Arrays can be more memory-efficient than ArrayLists in some cases. For example, if you are working with very large collections of primitive data types, like integers or doubles, an array of primitives may be more memory-efficient than an ArrayList of objects.Compatibility with legacy code: Some older programming languages or legacy code may only support arrays and not ArrayLists, which can make it necessary to use an array.To know more about arraylist, visit: https://brainly.com/question/30511164
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what will the following code segment evaluate to? a ← 9 b ← 5 c ← 4 expression = a b * c display(expression)
The code segment will display the value 180.
The following given code segment will evaluate to the expression 9 * 5 * 4, which equals 180. This is because the variables "a", "b", and "c" are assigned the values 9, 5, and 4, respectively, and the expression is set to the product of these three variables. Therefore, the code segment will display the value 180.
Here is the code segment with the evaluated expression:
a ← 9
b ← 5
c ← 4
expression = a * b * c
display(expression)
The final result of this code segment is 180.
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why does the hardware implement both trap and interrupt for the os when they do much the same thing: stop the flow of control? g
The trap is a signal that a user software sends to the operating system telling it to carry out particular activity right away. The interrupt, on the other hand, is a hardware-generated signal sent to the CPU to alert it to an urgent situation. A trap also activates OS features.
Applications in operating systems rely on events to carry out operations. As a result, the OS fits within the paradigm of an event-driven module. When an OS runs specific programs or apps, an event may happen. An event causes a program to run and switches an OS's state from user-mode to kernel mode.
A trap is a synchronous interrupt used to carry out functionality when a user process encounters an exception.
An OS trap can be set off by exceptional circumstances such an illegal memory access, a division by zero, or a breakpoint.
A trap changes the mode of an OS to a kernel routine. Here, the OS executes some actions and returns the control to the process it was executing before. During a trap, the execution of a process is set as a high priority compared to user code.
An OS must respond immediately to a hardware or software signal known as an interrupt. It alerts the processor to the urgent need to complete a crucial process. The current working process is disrupted in such a situation.
Generally speaking, a hardware or software device can cause an interrupt. We can see a hardware interruption following the completion of an I/O operation.
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You have a games console in your bedroom and a video streaming device in your lounge. You use both devices to watch movies. The Wireless Access Point is located in the lounge. You have found that you are able to stream movies at a far higher quality in the lounge than in your bedroom. Why is this?
Answer: Your ping reach time (ETA) is far faster or "lower" the closer you are to your wireless router. I hope this helps!
Explanation:
1) What are some legal issues that can arise from the use of social media?
This a critical thinking question.
All of the legal concerns surrounding user-generated content are covered under social media law, which has both civil and criminal law components. Privacy rights, slander, advertising rules, property rules etc.
Is using social media healthy?Even if social media may not provide the same psychological benefits as face-to-face interaction, there are many good ways that it can help you stay connected and improve your wellness. Through social media, you may stay in touch with family members and friends from all over the world.
What serves as social media's primary purpose?Social media is a method for interacting and connecting with others. Social media has evolved into a potent tool for connecting with people in the modern age, when people's lives are very personal and hectic.
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predictive health, a fast-growing medical research firm, has accumulated so much patient information that conventional database management systems cannot handle its needs. therefore, predictive health purchased very sophisticated analysis software and supercomputing-level hardware to leverage the power of
The AI-driven insights will also help Predictive health create personalized preventive care plans for patients, which can help reduce the prevalence of certain medical issues.
1.Predictive health accumulates patient information which is too large to be handled by conventional database management systems
2.In order to process the data, Predictive health purchased sophisticated AI software and supercomputing-level hardware
3.The AI software and hardware will enable Predictive health to analyze the patient data and provide insights that would otherwise be impossible to obtain with conventional database management systems
4.The AI software and hardware will be used to identify patterns in the data, uncover correlations between patient data points, and draw conclusions that can be used to improve patient care.
5.The AI-driven insights will also help Predictive health create personalized preventive care plans for patients, which can help reduce the prevalence of certain medical issues.
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describe three types of multicomputer configurations. what are their comparative advantages and disadvantages?
Answer:
Clustered SystemGrid ComputingDistributed SystemExplanation:
Clustered System: A cluster is a group of interconnected computers that work together as a single system. Clustered systems are often used for high-availability applications, where multiple computers work together to provide fault tolerance. The comparative advantage of a clustered system is its high level of reliability, as it can continue to operate even if one or more of its computers fail. The disadvantage of a clustered system is its high cost, as multiple computers and interconnecting hardware are required.Grid Computing: A grid is a large-scale network of computers that work together to perform complex computations. Grid computing is often used for scientific and engineering applications, where massive amounts of data must be processed. The comparative advantage of grid computing is its scalability, as additional computers can be added to the grid as needed. The disadvantage of grid computing is its complexity, as a large number of computers must be managed and coordinated to achieve the desired results.Distributed System: A distributed system is a network of computers that work together to share resources and data. Distributed systems are often used for enterprise applications, where multiple computers work together to provide a common service. The comparative advantage of a distributed system is its flexibility, as resources can be shared and distributed as needed. The disadvantage of a distributed system is its complexity, as multiple computers must be managed and coordinated to achieve the desired results.Kieran wants to search a database quickly for information on the last time a patient came to his medical facility. This information is contained in one table. Which feature would make the most sense for him to use?
A. Query
B. Report
C. Filter
D. Sort
Sort feature would make the most sense for him to use.
What is Medical facility?In general, a health facility is any place that offers medical services. Small clinics, doctor's offices, urgent care facilities, big hospitals with sophisticated emergency rooms, and trauma centers are all examples of healthcare facilities.
One typical indicator of a country or region's prosperity and quality of life is the quantity and caliber of its health services. Health care facilities are frequently subject to some legal regulation; frequently, a facility must first get a license from a regulatory body before it can begin operations.
Governments, for-profit companies, non-profit groups, and occasionally even private citizens may own and run healthcare facilities, with the proportions varied by nation.
Therefore, Sort feature would make the most sense for him to use.
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One software license model allows software to be freely distributed, downloaded, and installed without paying a license fee, but often requires a fee for support, training, or added functionality.What is the name of this model?A. Open SourceB. DRMC. You risk losing your job.D. You expose your company
The software license model that allows software to get freely downloaded, freely distributed, downloaded, and installing doesn't require you to pay for a license fee, but often requires a fee for support, training, or added functionality is called the Open Source model.
What is software license?
Open Source refers to software that is available to the public with its source code, or underlying programming code, accessible and modifiable by users.
Open Source software is typically distributed under a license that allows users to download, install, and use the software without paying a license fee.
However, some Open Source licenses may require users to contribute any changes or modifications made to the software back to the Open Source community.
While the software itself is free, users may need to pay for additional support, training, or added functionality.
This can include things like technical support, documentation, training materials, and access to additional features or add-ons.
The Open Source model has become increasingly popular over the years, and many organizations, both large and small, use Open Source software to power their businesses.
Some examples of popular Open Source software include the Linux operating system, the Apache web server, and the MySQL database.
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Which of the following is most likely to be a complement to coffee? a) decal coffee b) baked beans c) tea d) creamer.
Creamer among the following is most likely to be a complement to coffee. Creamer comes in many different flavors, including organic, non-dairy, and flavored varieties
Option D is correct.
Creamer: What is it?Coffee and tea's flavor and texture are enhanced with creamer, a type of dairy product. It typically consists of cow's milk and vegetable oils like soybean or coconut oil, making it a thicker liquid than milk. Cream, sugar, and a variety of flavorings can also be used to make creamer. It gives drinks a velvety, creamy texture and is typically used sparingly. Creamer comes in many different flavors, including organic, non-dairy, and flavored varieties. Cappuccinos, lattes, and other popular coffee drinks can all be made with it.
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you want to focus and track malicious activity to a particular host in your screened subnet. what should you configure
To focus and track malicious activity to a particular host in your screened subnet, you should configure network monitoring tools such as intrusion detection and prevention systems (IDS/IPS).
These tools are designed to analyze network traffic, detect any suspicious activity, and alert the administrator in real-time.
To configure an IDS/IPS system, you would need to define rules that specify the type of traffic to monitor and the actions to take when a rule is triggered. For example, you could configure the system to monitor traffic to a specific IP address or range of addresses, and then trigger an alert when a particular type of traffic is detected, such as port scanning, brute force login attempts, or network-based attacks.
By configuring an IDS/IPS system to focus on a particular host in your screened subnet, you can quickly identify and respond to any malicious activity directed towards that host. This can help prevent the attacker from gaining access to your network, stealing data, or causing damage to your systems.
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the operating system serves as the interface between the user, applications, and hardware. a. true b. false
False that the operating system acts as a conduit between the user, programmes, and hardware.
What is the operating system's interface with the user?The portion of an operating system, software, or device that enables a user to enter and receive information is referred to as the user interface (UI). Text is shown on a text-based user interface, and commands are often entered using a keyboard on a command line.
Which of the following statements regarding operating systems is false?Complete Resolution. Option 1: It makes sure that RAM and hard discs in computer systems never crash or malfunction. False, System software called an operating system (OS) controls or ensures computer hardware, software resources, and offers standard services for software programmes.
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PLEASE HELP 40 POINTS What are the advantages and disadvantages of advertising on radio? In what ways does advertising use films and video (other than in TV commercials)?
Answer:
Advantages of advertising on radio:
Reach: Radio has a wide reach and can target specific demographics, such as age, gender, and geographic location.
Cost-effective: Radio advertising is generally less expensive than television advertising and can still reach a large audience.
Flexibility: Radio advertising can be created and broadcast relatively quickly, making it a good option for time-sensitive promotions.
Audio-only format: Radio advertising can create a strong emotional connection with listeners, as the use of music and voice can evoke different emotions and moods.
Disadvantages of advertising on radio:
Limited visuals: Radio advertising is limited to audio only, so it can be difficult to capture the attention of listeners and convey information effectively.
Limited attention span: Radio listeners may be multitasking or not paying close attention to the radio, making it harder for advertisements to stand out.
Competition: With many stations and programs available, it can be difficult to stand out and be heard above the noise.
In terms of advertising using films and video, here are some ways that they can be used:
Corporate videos: Companies can use films and videos to showcase their products, services, and company culture to potential customers, employees, and stakeholders.
Online video advertising: Video advertisements can be placed on websites, social media platforms, and streaming services to reach a large audience.
Event videos: Films and videos can be created to promote events, such as concerts, trade shows, and product launches.
Product demonstrations: Videos can be used to demonstrate how products work and highlight their benefits.
Interactive video advertisements: Interactive video advertisements allow viewers to engage with the content and make choices that determine the outcome of the video.
Explanation:
In the event of CPU capacity starvations, you can either ________ _______ or ______________
The only options in the event of CPU starvation are to either increase CPU resources or decrease whatever is using the resources, which is clearly not always an option.
What functions does the CPU perform?As instructed by the software, the CPU carries out essential mathematical, logical, controlling, and input/output (I/O) operations. In contrast, internal processors like graphics processing units and specialised processors like main memory and I/O circuitry are built into computers (GPUs).
What kinds of CPU scheduling are there?The two primary categories of CPU scheduling are preemptive and non-preemptive. Preemptive scheduling refers to the transition of a process from a running state to a ready state or from a waiting state to a ready state. When a process ceases or changes, non-preemptive scheduling is used.
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Kevin enjoys taking apart electronics and putting them back together. Which occupation would work for Kevin? (2 points)
Group of answer choices
Accountant
Graphic designer
Marketing manager
Technician
Kevin enjoys taking apart electronics and putting them back together Technician occupation would work for Kevin.
What is the Technician ?A technician is an individual who possesses a wide range of professional skills and knowledge in a particular field, such as engineering, information technology (IT), medical technology, laboratory technology, and many others. They work in various industries and settings, including hospitals, schools, businesses, and research and development centers. Technicians use their expertise to solve technical problems, build and maintain systems, diagnose and repair equipment, and provide technical advice and support to customers. They often work with other professionals to ensure that systems and systems-related processes are running smoothly. Technicians use their technical knowledge to develop solutions to problems, analyze data, and create and maintain databases.
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Answer:
Technician
Explanation:
I got it right on the test
c does not use exceptions. what is commonly used instead (in the standard library, for example) to indicate whether a function has succeeded or failed? what represents success, and what represents failure?
Error handling is not directly supported by C. (also known as exception handling).
By convention, the programmer is required to test function return values and take steps to avoid mistakes from happening in the first place. Both exception handling and error handling are not supported by the C programming language. It is an added service provided by C. Although this feature is missing, there are still ways to provide error management in C. In general, most functions either return a null result or -1 in the event of an error. Although error handling (or exception handling) is not directly supported by C, there are nonetheless ways to handle errors in the language. A programmer must start by eliminating errors.
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the different rates of synapse production in different areas of the brain indicate the a. incapability of the brain to develop simultaneously in multiple areas. b. all of the answers are correct. c. differences in the timing of development of different skills and behavioral categories. d. different rates of synapse elimination.
The timing of the development of various skills and behavioral categories varies according to the rates of synapse creation in various brain regions.
What does brain development's synaptogenesis entail?About all of the neurons that will make up the mature brain have matured by 7 months of gestation. Synaptogenesis is the term used to describe the process through which axons, synapses, and dendrites (fiber connections) grow in the brain after birth.
How many synapses are there in a neuron?An average of 7,000 synaptic connections exist between each neuron and other neurons. It places the number of synapses somewhere around 600 trillion.
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