Why might a system use interrupt-driven I/O to manage a single serial port and polling I/O to manage a front-end processor, such as a terminal concentrator?
Answers
Interrupt-driven I/O is more efficient and does not waste CPU time for devices that generate events infrequently, such as a single serial port. Polling I/O may be a better technique for front-end processors, such as a terminal concentrator, which may have multiple devices connected to it and each device may generate I/O events frequently. Polling I/O is simpler to implement and does not require as much overhead as interrupt-driven I/O.
Interrupt-driven I/O and polling I/O are two different techniques for managing I/O operations in a computer system.
Interrupt-driven I/O is a technique where the CPU is interrupted when an I/O operation is ready to be performed, such as when data arrives at a serial port. The CPU stops what it is doing and services the I/O operation, then returns to its previous task. This is a more efficient way of managing I/O operations because the CPU is not wasting time continuously checking for I/O events.
Polling I/O, on the other hand, is a technique where the CPU continuously checks the status of an I/O device to see if an operation is ready to be performed. This technique is simpler to implement, but it can waste CPU time if the device is not ready for I/O operations.
A system might use interrupt-driven I/O to manage a single serial port because it is more efficient and does not waste CPU time. Interrupt-driven I/O is especially useful for devices that generate events infrequently, such as serial ports. Using polling I/O for such devices would cause the CPU to waste time checking the device status continuously.
A front-end processor, such as a terminal concentrator, may have multiple devices connected to it, and each device may generate I/O events frequently. Polling I/O may be a better technique to manage I/O operations for such devices because it is simpler to implement and does not require as much overhead as interrupt-driven I/O. Additionally, terminal concentrators are typically responsible for managing a large number of devices, so using interrupt-driven I/O for each device could overwhelm the CPU with interrupts.
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Related Questions
What three elements must be present for a fire to ignite and continue to burn? how do fire suppression systems manipulate the three elements to quell fires?
Answers
The three elements needed to spark up a potential fire exist temperature (source of ignition), fuel, and oxygen.
What are the elements be present for a fire to ignite and continue to burn?The three elements needed to spark up a potential fire exist temperature (source of ignition), fuel, and oxygen. Fire suppression systems exploit this danger by detecting and responding to a fire, potential fire, or a combustion hazard by denying the environment of any of the three elements needed to ignite a fire.
Physical security's main purpose is to protect the assets and facilities of the organization. So the foremost obligation of physical security is to safeguard employees since they exist as an important asset to the company. Their safety stands as the first priority pursued by securing the facilities. The 3 things a fire needs stand heat, fuel, and oxygen. These three elements work together to support a fire start and take over. However, if any of the three elements stand removed from a fire, then it will destroy and no longer pose a threat.
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What technology that was developed in the early 1880s was used for both mining reclaiming land in the california delta?.
Answers
The technology that was developed in the early 1880s ,that was used for both mining reclaiming land in the california delta is hydraulic mining.
A type of mining known as hydraulic mining involves moving silt or displacing rock material with the help of high-pressure water jets. The resulting water-sediment slurry from placer mining for gold or tin is sent through sluice boxes to extract the gold. Kaolin and coal mining both use it.
Ancient Roman practices that employed water to remove soft subsurface minerals gave rise to hydraulic mining. Its contemporary form, which makes use of pressured water jets generated by a nozzle known as a "monitor," was developed in the 1850s in the United States during the California Gold Rush. Despite being effective in extracting gold-rich minerals, the process caused significant environmental harm due to increased flooding and erosion as well as sediment blocking water ways and covering farmland.
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How does the brain influence your emotions, thoughts, and values?
Answers
Amygdala. Each hemisphere of the brain has an amygdala, a small, almond-shaped structure. The amygdalae, which are a part of the limbic system, control emotion and memory and are linked to the brain's reward system, stress, and the "fight or flight" reaction when someone senses a threat.
What are the effects of the brain?Serotonin and dopamine, two neurotransmitters, are used as chemical messengers to carry messages throughout the network. When brain areas get these signals, we recognize things and circumstances, give them emotional values to direct our behavior, and make split-second risk/reward judgments.Amygdala. The amygdala is a small, almond-shaped structure found in each hemisphere of the brain. The limbic systems' amygdalae control emotion and memory and are linked to the brain's reward system, stress, and the "fight or flight" response when someone perceives a threat.Researchers have demonstrated that a variety of brain regions are involved in processing emotions using MRI cameras. Processing an emotion takes happen in a number of different locations.To learn more about Amygdala, refer to:
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What value is displayed as a result of executing the code segment?
Answers
Answer:
A: 3
Explanation:
The MOD operator is used to calculate the remainder of dividing two numbers, so by the end of this operation, we are adding the MODs of each integer in this list, because this program ends once each integer in list has gone through the steps, and the result of calculating the MOD of each integer is then added back because of the third step. So it should look like this: (4 MOD 2) + (2 MOD 2)...(1 MOD 2) and the result of adding these values should then result in 3.
The value which is displayed as a result of executing the code segment is equal to: A. 3.
What is MOD?MOD is an abbreviation for modulo operation and it can be defined as a mathematical technique that is used in computer science to determine the remainder of an arithmetic operation such as the division of two numbers.
Based on the code segment, the value which is displayed as a result of executing the modulo operation would be equal to 3 at the end of the iteration or operation.
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The image shows a bar graph.
A bar graph shows a series of 4 vertical bars along an x and y axis.
In which scenarios would using this graph be best for a presentation? Check all that apply.
showing change in a community’s average median age over a century
comparing the percentages of the types of pets owned in a community
showing how the world’s shark population has changed over 50 years
comparing the number of men and women who earned engineering degrees in a decade
showing the percentages of the various religions practiced in Indonesia
Answers
Answer:
showing change in a community’s average median age over a century
showing how the world’s shark population has changed over 50 years.
comparing the number of men and women who earned engineering degrees in a decade
Explanation:
After previewing and cleaning your data, you determine what variables are most relevant to your analysis. Your main focus is on Rating, Cocoa. Percent, and Company. Location. You decide to use the select() function to create a new data frame with only these three variables. Assume the first part of your code is:
trimmed_flavors_df <- flavors_df %>%
What bean type appears in row 6 of your tibble?
a. Criollo
b. Beniano
c. Forastero
d. Trinitario
Answers
Answer: None of these
Explanation:
It is not possible for me to determine what bean type appears in row 6 of your tibble without more information. The select() function is used to create a new data frame with only the specified variables, but it does not change the content of the original data frame. In order to determine the bean type for row 6 of your tibble, you will need to access the relevant column of the data frame and use the index to retrieve the value for that row.
For example, if the column containing the bean type is called "Bean Type", you could use the following code to retrieve the value for row 6:
bean_type <- flavors_df$Bean.Type[6]
What will be the pseudo code and flow chart for this?
If the salary is 9000 or greater, tax of 15% should be applied. If the salary is less than 9000, no tax is applied.
Show the gross salary at the end.
Answers
Answer:
Sure! Here's a possible pseudo-code and flow chart for this program:
Pseudo code:
Ask the user for their salary.
If the salary is greater than or equal to 9000, apply a tax of 15% and calculate the net salary.
If the salary is less than 9000, do not apply any tax and set the net salary equal to the gross salary.
Display the gross and net salaries.
Flow chart:
+---------------------+
| Start Program |
+---------------------+
|
v
+---------------------+
| Ask for salary input |
+---------------------+
|
v
+------------------------+
| Check if salary >= 9000 |
+------------------------+
|
+----+----+
| |
v v
+----------------+ +----------------+
| Apply 15% tax | | Set net salary |
+----------------+ +----------------+
| |
v v
+----------------+ +----------------+
| Calculate net | | Display results |
+----------------+ +----------------+
|
v
+---------------------+
| End Program |
+---------------------+
Explanation:
Which of the following is an example of a technical ("hard") skill?.
Answers
Answer: Microsoft Office, Troubleshooting, Interpreting Data, Video Editing, Graphic Design
Explanation:
A photograph is created by what
A) Silver
B) Shutters
C) Light
4) Mirror
Answers
A photograph is created by Light.
What are photographs made of?Any photograph created is one that is made up of Support and binders.
The steps that are needed in the creation of a photograph are:
First one need to expose or bring the film to light.Then develop or work on the imageLastly print the photograph.Hence, for a person to create a photograph, light is needed and as such, A photograph is created by Light.
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Which type of system is not proprietary?
Answers
Nonproprietary software is open source and accessible for free download and usage. It also makes its source code completely available. Software that is not proprietary can also be referred to as open-source.
Due to the fact that Linux and Android are not proprietary, there are several variations of both operating systems. A system, tool, or program that is solely owned by an organization is referred to as proprietary technology. In most cases, the proprietor develops and employs them domestically in order to manufacture and offer goods and services to clients. From the foregoing, it can be inferred that Microsoft Windows is an example of proprietary system software. Linux is an open-source, free operating system that was made available under the GNU General Public License (GPL). The source code may be used, examined, altered, and distributed by anybody, and they may even sell copies of the altered code. computer operating system that is specific to a certain class of computers
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Which of the following are results of technological advancements and increased automation?
Increased labor demand
Decreased productivity
Increased cost
Increased productivity
Answers
Answer:
increased productivity
Explanation:
sorry if i am not correct
which fields in the contact form is used to control the order in which contacts are displayed in the current view?
Answers
Answer:
The answer is "File As"
Explanation:
The file is a data collection, that is processed either by filename in a single system. It could be a text, an image, a sound or a streaming server, a software collection, an and app, and other data collection. In this, the File As the field is used to order in connections that are displayed in the original understanding was controlled by using the contact-form sector.
what do these actions represent? record checksums increase secure audit logging buildup host defenses backup critical data educate users preparing for incident detection preparing for computer forensics preparing systems for incident response preparing for incident investigation
Answers
The actions you have listed represent steps to take in order to secure a computer system. These steps include: record checksums, increase secure audit logging, buildup host defenses, backup critical data, educate users, preparing for incident detection, preparing for computer forensics, preparing systems for incident response, and preparing for incident investigation.
Record checksums is a process used to compare two sets of data to make sure they are identical. Increase secure audit logging is used to track events that occur on a system in order to identify security incidents. Buildup host defenses involves setting up firewalls and other security measures to protect the system. Backing up critical data is important for restoring information in the event of a security breach.
Educating users involves teaching them about good security practices, such as not clicking on unknown links or opening attachments from unknown sources. Preparing for incident detection includes implementing processes and tools to detect malicious activity. Preparing for computer forensics is the process of gathering evidence in order to investigate security incidents.
Preparing systems for incident response is the process of making sure the system can quickly and effectively respond to security incidents. Finally, preparing for incident investigation involves putting processes in place to investigate and document the details of a security incident.
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Complete the sentence.
involves placing a device on the network that captures all the raw data in the network traffic to try to find something valuable
A. Dumpster diving
B. Packet sniffing
C. Social engineering
D. Phishing
Answers
Answer:
D. Phishing
Explanation:
Answer: B. Packet sniffing
Explanation:
right on edge
an aspect of impaired control processes is evidenced when an older adult:____
Answers
An aspect of impaired control processes is evidenced when an older adult experiences difficulty in making decisions.
As people age, their cognitive abilities tend to decline, and they may find it challenging to make decisions quickly or effectively. This difficulty can be a result of impaired control processes, which refers to the brain's ability to exert control over cognitive functions.
Impaired control processes can manifest in several ways, including difficulty in decision-making, planning, and problem-solving. These challenges can have a significant impact on an older adult's daily life, leading to frustration, confusion, and decreased independence.
It is essential for caregivers and healthcare professionals to be aware of these difficulties and provide support and resources to help older adults maintain their cognitive abilities and overall quality of life.
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Match each definition with the term it describes. A(n) ______ provides identification and addressing information for computers and devices on a network. A(n) ________ is a network that covers an area of less than a mile. The Internet is an example of a(n) ______.
Answers
Answer:
IP address, LAN, WAN
Explanation:
Answer:
Sentence 1: IP Address
Sentence 2: LAN
Sentence 3: WAN
Explanation:
Edge 2022
Is MOOC's potentially harmful to copyright? Why or why not ?
Answers
Answer:
Fair-use exceptions to traditional copyright protection face challenges as well, given a MOOC's potential for global reach. Nonetheless, fair use and MOOCs are not mutually exclusive ideas. MOOCs remain an experiment...
1. Create a function called count_to_three() , remember the colon.
2.Indented inside the function add the print() function three times to output the
words "One" "Two" and "Three"
3.Outside the function add a line to call the function
Answers
Answer:
This program is written using Python programming language
The program doesn't make use of comments
See attachment for proper format of the program
def count_to_three():
print("One")
print("Two")
print("Three")
count_to_three()
Explanation:
The first line of the program defines the function count_to_three() with no parameters, passed to it
Line 2 to 4 of the program is indent and each line make use of print() function
Line 2 prints "One", Line 3 prints "Two" and Line 4 prints "Three" without quotes
The last line of the program calls the defined function
Which computer program offers a comprehensive collection of tools for creating digital art by using a variety of shapes, lines, and letters which can be easily measured and formatted?
Answers
Answer:
LibreOffice Draw
Explanation:
Answer:
A
Explanation:
Which of the following is an example of an application ?
Answers
I need help with this question.
Answers
Explanation:
Whilst it is impractical to convert all the numbers to binary, I will explain how binary works to you.
Binary is usually composed of eight bits, each representing a different number.
0000 0000
Each 0 represents a column in an 8-bit binary number. The far-right column starts at 1 and doubles each time you change to the left column.
128 64 32 16 8 4 2 1
0 0 0 0 0 0 0 0
A number 1 means that there is a number in that column whereas a 0 means there isn't, like the normal "0 means off and 1 means on" system. When there is a 1 in every column:
1 1 1 1 1 1 1 1
There can be a maximum value of 255.
For example, the number 79 would be represented in binary as:
128 64 32 16 8 4 2 1
0 1 0 0 1 1 1 1
64 + 8 + 4 + 2 + 1 = 79
Hope this helps!
Why does python process slower than c
Answers
Python processes slower than C because it is an interpreted language, meaning the code is executed line by line, while C is a compiled language, which translates the entire code into machine language before execution.
Python is an interpreted language, meaning that it is translated into machine code on-the-fly as it runs. This process can be slower compared to compiled languages like C, where the code is pre-compiled into machine code before running. Additionally, Python is a dynamically typed language, which means that the type of a variable is determined at runtime, whereas C is statically typed and the type is determined at compile time. This can also contribute to slower processing in Python compared to C. However, Python is known for its ease of use and readability, which can be advantageous in certain situations.
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Research and describe plug-ins and their usage in graphic design.
Answers
Answer:
Plug-ins are software developed to work with another software that is already installed in the computer. They are basically add-on software that enhance a functionality of an existing software. These plug-ins can be used for different purposes based on which software they support. There can be plug-ins for search engines, audio-video players, photo-editing software, graphical design software, and more.
Plug-ins may be developed by the same company which developed the software that the plug-in is supposed to work with. It may also be developed by independent developers who just want to solve or add an element to the existing features of a software.
Plug-ins are mostly free and are released after the target software is tested and released.
Plug-ins offer a lot of assistance in graphical design. It works with the design software for adding or enhancing affects and styles to the original work. Some of the functions that popular plug-in software provide are:
• to improve color, sharpness, and focus (perspective) of the images
• to create (and enhance) natural lighting effects within the image
• to sharpen or define (emphasize) particular parts of the image
• create motion blur
• change point-of-focus of the image
• alter the level of opacity of brushes
• alter the size of brush strokes (different from the ones that already exist)
• Control and enhance the intensity of dark areas in an image
• eliminate distortion due to camera shake
• create metallic edges for elements in the image
• introduce mood and blended contrast effects
Explanation:
This is what it said when I submitted my answer
how is motion detection technology used to monitor and provide security for sensitive areas, and how can it deal with false positives?
Answers
Motion detection technology is widely used to monitor and provide security for sensitive areas such as banks, airports, government buildings, and other high-security locations.
The technology uses cameras and sensors to detect movement in the monitored area, which triggers an alert and sends notifications to the security personnel. The system can also record the motion, allowing authorities to review footage and investigate any security breaches.
Motion detection technology can deal with false positives by using advanced algorithms to analyze the detected movement and distinguish between a real threat and a false alarm. The system can be programmed to ignore certain types of movement, such as the movement of small animals or objects that may trigger false alarms. Additionally, the system can be configured to adjust the sensitivity of the motion detector based on the time of day or specific environmental conditions, such as weather or lighting.
To further reduce the number of false positives, motion detection technology can also incorporate other security measures, such as facial recognition software, biometric authentication, or access control systems. These additional measures provide an extra layer of security and help ensure that only authorized individuals are granted access to sensitive areas.
Overall, motion detection technology is an essential tool for monitoring and securing sensitive areas. Its ability to detect and alert security personnel of potential threats helps to prevent security breaches and protect the safety of individuals and assets. By incorporating advanced algorithms and other security measures, motion detection technology can also reduce the number of false positives, providing a more reliable and efficient security solution.
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Within a design, what is the idea of consistency which can illustrate a theme of a design?
Answers
The idea of consistency which can illustrate a theme of a design is called; Rythm
In interface design of websites, we have to carefully note the interactions that happen between human cognition and also the screen you’re trying to design for by having consistency and standards.
The two primary reasons for having consistency and standards when doing interface design are;
1) Reduce Learning; Being consistent limits the number of ways actions and operations are represented on the interface which ensures that the users do not have to learn new representations for each task.
2) Eliminate Confusion; Confusion arises when people are unable to add up piece of information together which sometimes, obstructs them from achieving a worthwhile target.
Thus, we have to make sure that the users do not have to spend time thinking about different words and actions and if they really mean the same thing within the context of your product.
Now, this idea of consistency explained above when illustrating themes is called Rythm.
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you have a pc that you connect to the ethernet network and that you use to create a console
Answers
As an AI language model, I don't have a physical presence or the ability to connect to networks or create consoles. However, I can provide you with general guidance on setting up a PC to connect to an Ethernet network and creating a console.
To connect your PC to an Ethernet network:
Ensure that your PC has an Ethernet port. Most modern PCs have built-in Ethernet ports, but if yours doesn't, you may need to use an Ethernet adapter.
Connect one end of an Ethernet cable to the Ethernet port on your PC and the other end to a network switch, router, or modem.
To create a console on your PC:
Launch a terminal emulator or console application. Bhas a built-in command prompt (CMD) or PowerShell that can be accessed by searching for "cmd" or "PowerShell" in the Start menu.
Alternatively, you can use third-party terminal emulators like PuTTY, iTerm2 (for macOS), or GNOME Terminal (for Linux).
Once you have the console or terminal open, you can use it to run command-line commands, execute scripts, manage files, and interact with the operating system and network.
Keep in mind that the exact steps may vary depending on your specific operating system and network configuration. It's always a good idea to consult the documentation or seek further assistance based on your specific needs and setup.
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select the ess product that provides a high level overview of the total number of installed applications, running services and ports for your managed systems?
Answers
The ESS product that provides a high-level overview of the total number of installed applications, running services, and ports for your managed systems is ESS Data Protection.
What is Data Protection ?Data protection is a set of practices and technologies designed to protect sensitive and confidential data from unauthorized access, use, disclosure, destruction, or modification. It involves protecting data from any kind of malicious attack, accidental damage, or other malicious activities. Data protection also involves measures to ensure the security and privacy of data, including encryption, access control, and other security protocols.
This product provides a comprehensive view of the security posture of your systems, including system-level information about installed applications, running services, and open ports. It also provides detailed reports on security threats and vulnerabilities, as well as real-time alerts and notifications. This allows you to quickly identify and respond to potential security threats and ensure your systems are secure and up-to-date.
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Explain any three views of the presentation
Answers
Slide sorter view is an exclusive view of the slides in thumbnail form.
Slide show view takes up the full computer screen, like an actual slideshow presentation.
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What does the machine do and how do the operators react to their work?
Answers
Answer:
The answer is below
Explanation:
Machine functions or does the following:
1. Transform energy
2. Change force direction
3. Increase or decrease speed
4. Move force over a distance.
Machine operator reacts to their work in the following ways:
1. Setting the machine for use
2. Utilizing the machine effectively
3. Performing machine maintenance
4. Ensuring maximum optimization of the machine
any one wanna play forza later?
no liberals/snowflakes
Answers
Answer:
sure
Explanation:
but im independent so