listen to exam instructions which of the following are best practices for hardening a server? (select three.) answer disable or uninstall unnecessary software. set the account lockout threshold. apply the latest patches and service packs. require multiple authentication factors. disable inactive accounts. ensure that a host-based firewall is running. establish time-of-day restrictions.

Flase. The the software uninstaller utility described in the chapter is NOT unnecessary because windows includes a built.

Of course, if you know how, you can delete an application manually, but deleters are designed to expedite the process. The uninstaller that comes with software frequently ignores everything created when the product is used and simply removes the files that were installed. As a result, information including data files, settings, caches, registry entries, and more is frequently overlooked.

Despite taking up disc space and contributing to system clutter, these leftovers from software can add redundant startup items, non-functional menu items, and more. When an app is deleted, the remnants it left behind can be cleaned up using an uninstaller utility. An uninstaller is therefore necessary.

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It is not true that in the client-server (CS) and the peer-to-peer (P2P) network architecture B) P2P network is more scalable than CS network CS network is more reliable than P2P network.

It is true that in client-server (CS) A dedicated server responds to client service requests in a client-server network. Client and server responsibilities are not shared by all network hosts. Computers in a peer-to-peer network are linked via a network and can share resources.

A dedicated server responds to client service requests in a client-server network. Client and server responsibilities are not shared by all network hosts.

Computers in a peer-to-peer network are linked via a network and can share resources. Depending on the nature of the transaction and the resources utilized or requested, each host can behave as either a server or a client. In a hybrid network, a server provides index information that allows a peer to locate resources on other peers. Depending on the nature of the network transaction, the peers can still play the client or server role.

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To apply the filter() function to a data frame, you need to specify the data frame as the first argument of the function, followed by the conditions that you want to filter on.

case, you can use the following code to filter the data frame for chocolate bars that contain at least 75% cocoa and have a rating of at least 3.9 points:

filter(data_frame, Cocoa.Percent >= 75, Rating >= 3.9)

Replace data_frame with the name of your data frame, and the code should filter the data frame as desired. It is also possible to use the & operator instead of , to combine the conditions in the filter() function, like this:

filter(data_frame, Cocoa.Percent >= 75 & Rating >= 3.9)

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36n passwords with length n are available. 10x(36)9 passwords with a length of 10 begin with a number.

First line of security against unwanted access to your system and personal information is provided by passwords. Your device will be more secure from hackers and bad malware if your password is strong. Password should be used for every account on our computer.

Total digit = 10

Total uppercase letter = 26

character filled in one place = 26 + 10 = 36

(a) Each place can be filled in 36 ways.

So, Number of password for lenght n = 36x36x36.....n = 36n

(b) Numerous methods for filling the top spot = 10

Number of possible methods to fill the nine rest places = 36

Consequently, a passwords of length 10 can be used in a total of 10 different ways = 10x(36)⁹

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SOHO (small office/home office) refers to a type of business or work environment that is typically set up in a small space, such as a home or a small office.

The first thing a technician should do to secure a SOHO (small office/home office) wireless router is to change the default password. The default password is the password that is set by the manufacturer and is the same for all routers of the same model.

It is important to change the default password because it is well known and can easily be guessed by someone who is trying to access the router without authorization.

By changing the default password to a unique, strong password, the technician can prevent unauthorized access to the router and protect the network from potential security threats. Other steps that can be taken to secure the router include disabling remote access, enabling encryption, and setting up a firewall.

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Note that if one's older sister is trying to decide whether to go to college or get a job and she is not sure where to begin looking for either, technology be useful for your sister in that she can leverage online search using the internet.

There are generic skills that everyone needs in the workplace. They include:

Workplace abilities enable you to complete your everyday activities on behalf of the company for which you work. For example, your abilities can help you develop an annual strategy, mediate a quarrel among employees, or be resilient when finishing a task with a tight deadline.

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ACL (Access Control Lists) are rules, typically applied to router interfaces that specify permitted and denied traffic.

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struct data{int id;float price;} , is a correct struct declaration.

A collection of elements with various data types is represented by a struct data type. An associated schema for a struct data type specifies the data's structure. You can provide ports the struct data type to pass, create, or process struct data.

How should a structure be declared in C++ programming? The identifier is followed by a structure type defined by the struct keyword (name of the structure). You can then define one or more members of that structure inside curly braces (declare variables inside curly braces).

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The eight-second rule indicates that consumers will abandon their efforts on a website if page download takes more than eight seconds.

The most significant aspect of the 8-second rule is its relationship to honesty. If a respondent spends longer than 8 seconds reading and answer a question, the probability that he or she is lying increases.

Your pages will load faster if your files are smaller. One of the simplest methods to minimize load times is to compress data, and activating compression with Gzip is now considered standard practice.

The optimization approach is used to find and optimize the transform parameters such that the similarity value in between the warped source picture and the destination image is maximized.

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Answer:

(D) Contact sensor

Correct me if I'm wrong,

happy to help!

Answer:

-- Define a list of numbers

myList = [23,24,28, 30,35,36,40,42,44,54]

-- Use a list comprehension to filter the list and return only the numbers

-- that are greater than 10 and less than or equal to 30

filteredList = [x | x <- myList, x > 10, x <= 30]

-- Print the filtered list

print(filteredList)

Answer:

1) click on the third slide

2) click New Slide or use the keyboard shortcut Ctrl + M

To have the new slide display below the selected slide in the slide window, click on that slide. Click the New Slide button under the Slides group on the Home tab. The new slide should be shown below the active slide. To add a new slide between the current ones, choose the first of the two slides and click New Slide.

On the Home tab, click Copy after selecting the slide or slides you wish to copy. Click the first slide, hold down Shift, and then click the last slide you want to select multiple consecutive slides. Press Ctrl, click each slide you want to pick, and then release the key to select several non-sequential slides.

Click Open. Ctrl + O is pressed. You can decide from a few options on the Open screen to pick a presentation to open. Decide the folder where you want to save the file.

Therefore,  click on the third slide and click New Slide or use the keyboard shortcut Ctrl + M.

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The Flatten Image option can be used to combine all layers in a file, regardless of the number of layers.

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A port number which an end user or network administrator would open on a web server is either 80 or 8080.

In Computer technology, there are different types of server and these include the following:

In Computer networking, a web server can be defined as a type of computer (server) that is designed and developed to run websites and distribute webpages as they are being requested over the Internet by end users (clients).

By default, the port number "80" are typically opened by an end user or network administrator on a web server.

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One business idea that may do well in the Metaverse is the safe of NFTs and Tokens which can be converted to means of exchange in the real world.

A non-fungible token is a one-of-a-kind digital identification that cannot be duplicated, replaced, or subdivided, is stored in a blockchain, and is used to verify authenticity and ownership.

NFTs are tokens that may be used to indicate ownership of one-of-a-kind goods. They enable us to tokenize items such as art, valuables, and even real estate. The Ethereum blockchain secures asset ownership; no one can change the record of ownership or copy/paste a new NFT into existence. NFT is an abbreviation for non-fungible tokens.

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The best motherboard for high-end workstations is one with many memory slots open and a top-tier video card.

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Since the technician is tasked to configure a mobile device to connect securely to the company network when the device is used at offsite locations where only internet connectivity is available. the option that the technician configure is option A: VPN.

The term "Virtual Private Network," or VPN, refers to the possibility of creating a secure network connection when utilizing public networks. VPNs mask your online identity and encrypt your internet activity. This makes it more challenging for outside parties to monitor your internet activities and steal data.

Therefore, through its use, Users can send and receive data via shared or public networks as if their computer equipment were physically connected to the private network thanks to a virtual private network, which extends a private network across a public network.

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VPN

WPA2

AES

S/MIME

IT security management is a formal process to ensure that critical assets are sufficiently protected in a cost-effective manner.

The world of information technology (IT) is constantly evolving, and along with this evolution comes the need to protect the various systems, networks, and data from malicious actors. With so much sensitive data now stored in digital form, it is essential that organizations implement effective IT security management systems to protect their critical assets. This essay will discuss the benefits of implementing an effective IT security management system, why it is important, and how to go about doing it.

First and foremost, an effective IT security management system provides an organization with a secure environment to store and manage their data. This is done by implementing various security protocols and measures such as encryption, firewalls, access control, and authentication. By implementing these measures, organizations can protect their data from unauthorized access, and ensure that only those with authorized access can access the data. Furthermore, an effective IT security management system can also provide organizations with the ability to identify potential security threats before they occur, and allow for the implementation of countermeasures to minimize the risk.

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Set a combination of 9 bits permissions to prevent others to access your files.

Linux/Unix-like operating systems allow you to configure a combination of 9 bits permissions to restrict other users from unwanted files/directory access. Special permissions for executable files known as set UID, set GID, and sticky bits are similar to these.

To alter the access flags on existing files, use the chmod ("change mode") command. This can be expanding the quantity with the -R option. This can be triggered with either octal data that represents the permission flags, or with symbolic representations of the flags. The modes define which permits should be granted or deleted from the given classes.

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Ahmed should anticipate potential security issues.

If Ahmed notices three events related to a remote access attempt being highlighted with a yellow exclamation mark in the Windows Server 2019 system log, he should anticipate potential security issues.

These events could indicate that someone is attempting to gain unauthorized access to the server, potentially to steal or manipulate data, or to disrupt the system.

Ahmed should investigate the source of these events and take appropriate action to secure the server and prevent further unauthorized access attempts. This could involve implementing additional security measures, such as firewalls or password protection, or disabling remote access altogether.

Ahmed should also keep an eye on the system log for any additional warning signs and take action to address them promptly.

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If the statements in the try clause raise no exceptions, the except clause is skipped and control proceeds to the end of the try-except statement. (True)

Try operates in the manner which further explained here. The try clause, which is comprised of the statement(s) between the try and except keywords, is first executed.

The try statement's execution is complete and the except clause is skipped if there is no exception.

The try clause's remaining sentences are skipped if an exception arises while it is being executed. If its type matches the name of the exception designated by the except keyword, the except clause is then executed, and execution moves on to the try/except block.

If an exception that does not match the exception listed in the except clause arises, it is passed on to outer try statements; if no handler is found, it is an unhandled exception and execution is terminated with the message shown above.

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When UX designers and collaborators want a better idea of the final state of a website or app, they can review it for mockup.

An application or web page mockup is a static design that includes many of the final design elements but is not functional. A mockup often contains some placeholder data and is less polished than a live page. It's helpful to dissect each element of the definition.

Making a product or service functional, pleasurable, and accessible is the responsibility of the UX designer. The phrase "user experience" is often associated with digital design for mobile apps and websites even though many organizations generate user experiences.

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To configure self-healing on the wireless network, you can use the following steps:

In the Wireless Controller console, go to the Configuration menu and select the Self-Healing option.

Enable the self-healing feature by checking the "Enable Self-Healing" box.

Set the radio power to automatically adjust when interference is present by checking the "Adjust Radio Power to Optimize Coverage" box.

Set the 2.4 GHz and 5 GHz radio channels to use the Background Scanning method to adjust for interference by selecting the "Background Scanning" option from the drop-down menu.

To configure background scanning for rogue device detection, AP locationing, and self-healing, you can use the following steps:

In the Wireless Controller console, go to the Configuration menu and select the Background Scanning option.

Enable background scanning by checking the "Enable Background Scanning" box.

Set the frequency of the scans to every 30 seconds by selecting "30 seconds" from the drop-down menu.

Enable rogue device detection, AP locationing, and self-healing by checking the corresponding boxes.

To configure load balancing for all radios, you can use the following steps:

In the Wireless Controller console, go to the Configuration menu and select the Load Balancing option.

Enable load balancing by checking the "Enable Load Balancing" box.

Set the threshold to 40 dB by entering the value in the "Threshold (dB)" field.

To configure band balancing to allow no more than 30% of clients to use the 2.4 GHz radios, you can use the following steps:

In the Wireless Controller console, go to the Configuration menu and select the Band Balancing option.

Enable band balancing by checking the "Enable Band Balancing" box.

Set the maximum percentage of clients allowed to use the 2.4 GHz radios to 30% by entering the value in the "Max Percentage of Clients Allowed on 2.4 GHz Radio" field.

To reduce the power levels to -3 dB for three access points in Building A, you can use the following steps:

In the Wireless Controller console, go to the Configuration menu and select the Access Points option.

Identify the access points in Building A using the wireless survey results in the exhibit.

For each of the identified access points, select the access point from the list and click the Edit button.

In the Access Point Configuration page, navigate to the Radio Configuration section and set the power level to -3 dB for each radio.

Click the Save button to apply the changes.

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Answer:

Q 1:

import time

def measure_amortized_cost_of_appending(num_iterations):

 # Create an empty list

 lst = []

 # Start a timer

 start_time = time.perf_counter()

 # Append num_iterations elements to the list

 for i in range(num_iterations):

   lst.append(i)

 # End the timer

 end_time = time.perf_counter()

 # Calculate and return the amortized cost of appending

 return (end_time - start_time) / num_iterations

This function creates an empty list, starts a timer, appends num_iterations elements to the list, and ends the timer. It then calculates and returns the amortized cost of appending by dividing the elapsed time by the number of iterations.

Q 2:

class Queue:

 def __init__(self):

   self.items = []

 def enqueue(self, item):

   self.items.append(item)

 def dequeue(self):

   return self.items.pop(0)

This implementation of the Queue class uses a Python list to store the items in the queue. The enqueue method appends an item to the end of the list, and the dequeue method removes and returns the item at the front of the list (index 0).

Answer:  bacon is made of meat and grease so the meat needs to be cooked!

Explanation:

The FIFO (First In First Out) algorithm replaces the oldest page in the frame, so the page that was brought in first is replaced first.

For the given page reference string, the FIFO algorithm would incur the most page faults when using three frames, and the Optimal algorithm would incur the least page faults when using four frames. The page fault count for the other algorithms would fall in between these two extremes.

For the given page reference string, the number of page faults that would occur for each of the replacement algorithms, assuming three and four frames, is as follows:

a) FIFO replacement:

With three frames: 9 page faults

With four frames: 8 page faults

b) Optimal replacement:

With three frames: 6 page faults

With four frames: 5 page faults

c) LRU replacement:

With three frames: 8 page faults

With four frames: 7 page faults

The FIFO (First In First Out) algorithm replaces the oldest page in the frame, so the page that was brought in first is replaced first. The Optimal algorithm replaces the page that will not be used for the longest time in the future, while the LRU (Least Recently Used) algorithm replaces the page that has not been used for the longest time in the past.

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Cassandra is likely seeing the radiology technician and dietician for a weight-loss plan.

What is technician?

A technician is a professional who has specialized knowledge in a specific area, such as computers, electronics, engineering, mechanics, and other technical fields. Technicians are often responsible for troubleshooting, installing, repairing and maintaining equipment, as well as providing technical support and advice to customers.

They typically have a wide range of skills and knowledge and may specialize in a certain type of equipment. Additionally, technicians may be required to develop and test new equipment, or to manage a team of other technicians.

1. Cassandra is likely seeing the radiology technician and dietician for a weight-loss plan. The radiology technician will likely take images of her body to give her an idea of where she is starting from and to provide a baseline for tracking her progress. The dietician will help her create a meal plan and discuss how to make healthy choices that will support her goals.

2. The Health Science and Law, Public Safety, Corrections, and Security clusters are both focused on helping people, but the Health Science cluster focuses on providing medical care and promoting health, while the Law, Public Safety, Corrections, and Security cluster is focused on protecting people and maintaining justice and order.

3. Let's say Vlad is interested in being a police officer. In this job, empathy is important in order to build relationships with the community and to understand how to best help people. At the same time, critical thinking skills are essential in order to make quick decisions and assess the situation in order to keep everyone safe.

4. University administrators are responsible for managing the day-to-day operations of a university, such as budgeting, fundraising, and managing staff. Because of the level of responsibility and the importance of the job, university administrators tend to make a higher salary than most other careers.

5. Foreign service officers are part of the Government and Public Administration cluster because they are responsible for representing their country in foreign nations. This includes managing economic, cultural, and diplomatic relations with other countries, which are all tasks that are part of the duties of a government official.

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The result of the subtraction of 4365 and 3412 using octal numbers is of:

753.

For octal numbers, each number is represented by three bits, as follows:

Then the binary representation of number 4365 is given as follows:

100011110101

The binary representation of number 3412 is given as follows:

011100001010

Then the following binary subtraction is made:

100011110101 - 011100001010

The result of this subtraction is of:

100011110101 - 011100001010 = 111101011

Then the octal result is given as follows:

111 101 011 = 753.

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The two commands can be used to add custom log file entries to the journald database include the following;

B. systemd-cat

C. logger

In Computer technology, a Linux command can be defined as a software program that is designed and developed to run on the command line, in order to enable an administrator (end user) of a Linux computer network perform both basic and advanced tasks by only entering a line of text.

In Database management systems (DBMS), the systemd-cat is a Linux command that is typically used by software engineers or database engineers for connecting the standard output and input of a database process to the journal.

In conclusion, we can logically deduce that both systemd-cat and logger are used for adding a custom log file entry to the journald database.

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Using the knowledge in computational language in python it is possible to write a code that Input a list of employee names and salaries stored in parallel arrays.

BEGIN

DECLARE

employeeNames[100] As String

employeeSalaries[100] as float

name as String

salary, totalSalary as float

averageSalary as float

count as integer

x as integer

rangeMin, rangeMax as float

INITIALIZE

count = 0;

totalSalary =0

DISPLAY “Enter employee name. (Enter * to quit.)”

READ name

//Read Employee data

WHILE name != “*” AND count < 100

employeeNames [count] = name

DISPLAY“Enter salary for “ + name + “.”

READ salary

employeeSalaries[count] = salary

totalSalary = totalSalary + salary

count = count + 1

DISPLAY “Enter employee name. (Enter * to quit.)”

READ name

END WHILE

//Calculate average salary with mix , max range

averageSalary = totalSalary / count

rangeMin = averageSalary - 5

rangeMax = averageSalary + 5

DISPLAY “The following employees have a salary within $5,000 of the mean salary of “ + averageSalary + “.”

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