You can use the reader = File.OpenText("data.txt"); to open a sequential access file for input.
What is StreamReader ?After declaring a StreamReader variable, you can use the OpenText method to open a sequential access file for input. This method creates a StreamReader object that allows you to read data from the file sequentially.
For example, suppose you have declared a StreamReader variable named reader and you want to open a file named data.txt for input. You can use the OpenText method to create a StreamReader object and open the file as follows:
reader = File.OpenText("data.txt");
What is OpenText method?This code will create a StreamReader object that is associated with the file data.txt. You can then use the reader variable to read data from the file using the ReadLine or ReadToEnd methods, for example.
In summary, the OpenText method is used to open a sequential access file for input using a StreamReader object. This method automatically creates a StreamReader object that can be used to read data from the file.
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what is an attack hackers flood a network server or web server with many thousands of false communications or requests for services to crash the network? group of answer choices
DoS( Denial of Service ) attack is a hackers flood a network server or web server with many thousands of false communications or requests for services to crash the network.
what is DoS attack ?A Denial-of-Service (DoS) attack is an attack meant to shut down a machine or network, making it inaccessible to its intended users. DoS attacks accomplish this by flooding the target with traffic, or sending it information that triggers a crash. In both instances, the DoS attack deprives legitimate users (i.e. employees, members, or account holders) of the service or resource they expected.
Victims of DoS attacks often target web servers of high-profile organizations such as banking, commerce, and media companies, or government and trade organizations. Though DoS attacks do not typically result in the theft or loss of significant information or other assets, they can cost the victim a great deal of time and money to handle.
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listen to exam instructions you are requested to help a user who reports that he has no more local storage space. you go to his system and log in as the root user. which of the following commands will display the available disk space on all partitions? (select two).
The commands will display the available disk space on all partitions df -h, df.
What is commands?The term commands refer managed to the demand. There was to direct the team to order are the complete on the particular deadline there was to direct the command to the team.
According to the commands will display the available disk infinite are the dividers df -h, df are the based on the two in the cases. There the operating commands are bespoke to assist a user who describes that he has no more localised storage infinite.
As a result, the commands will display the available disk space on all partitions df -h, df.
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using psp1, write a program to calculate the linear regression parameters and and correlation coefficients and for a set of n pairs of data,given an estimate, calculate an improved prediction, where. software documentation
#include <iostream>
#include <cmath>
#include <vector>
using namespace std;
// Calculates the mean of a vector of values.
double mean(const vector<double>& values)
{
double total = 0;
for (double v : values)
{
total += v;
}
return total / values.size();
}
// Calculates the variance of a vector of values.
double variance(const vector<double>& values, double mean)
{
double total = 0;
for (double v : values)
{
double diff = v - mean;
total += diff * diff;
}
return total / values.size();
}
// Calculates the linear regression parameters and correlation coefficients for a set of data.
void linear_regression(const vector<double>& x, const vector<double>& y, double& a, double& b, double& r)
{
// Calculate the mean of the x and y values.
double x_mean = mean(x);
double y_mean = mean(y);
// Calculate the variance of the x and y values.
double x_var = variance(x, x_mean);
double y_
Here is an example of a program that calculates the linear regression parameters and correlation coefficients for a set of data, and uses them to make an improved prediction.
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use this forum to discuss homework and material related to recursion and recurrence relations. some prompts for discussion: for those of you who have taken programming classes, how have you used recursion to solve problems? how can an understanding of recursion help make one a better programmer? you need to do initial posting before you can see responses from your peers. see the rubric below.
Recurrence relations can be resolved using the Recursion Tree Method. Recursive trees are created using this method from a recurrence relation.
Each node reflects the expense incurred at different recursive levels. The overall cost is calculated by adding the costs from each level.
20 nodes at level 0 are equal to one.
21 + 2 Equals number of nodes at level 1.
Number of nodes at level 2log10/9(n), which is equal to nlog10/9 (2)
nlog10/9(2) x T(1) = nlog10/9(2) x 1 = nlog10/9 Cost of subproblems at level log2(n) (last level) (2)
Step 4: Add up all of the levels' costs in the recursive tree.
T(n) = n times (number of levels - 1) plus the cost of the last level.
= log10/9(n) times + (nlog10/9(2)) = n + n + n + —-
= (nlog10/9(2)) + nlog10/9(n)
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by default, what type of alternative hypothesis is tested when using the proc ttest procedure? select one: a. two-sided test b. right-tail (one-sided) test c. left-tail (one-sided) test
Two-sided test is type of alternative hypothesis is tested when using the proc ttest procedure. Two-side test leads to accurate and reliable results.
One-side tests permit the opportunity of an effect in one direction. Two-side tests are tests for the opportunity of an impact in positive and negative direction opportunity of an impact in positive and negative directions are a test for the opportunity of an impact in positive and negative direction opportunity of an impact in directions—positive and negative. The -tailed test can show proof that the control and version are different, however, the one-tailed test can display proof if a variant is higher than the manipulated.
Pros and Cons One-tailed tests
Requires much less traffic.Gains importance faster.Only bills for one scenario.Can cause erroneous and biased results.Pros and Cons Two-sided test
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use autofilter to filter the query results first to show only records where value of the staffid field is mo or shannon
According to the scenario, in the Home Ribbon tab in the Sort and Filter ribbon group, you clicked the selection button, followed by an advanced button.
What do you mean by Autofilter?Autofilter may be characterized as an easy way to turn the values in an Excel column into filters based on the column's cells or content. This feature is used to find, show, or hide values in one or more columns of data.
You can definitely filter the data and content based on choices you make from a list, or search to find the data that you seek. When you filter data, entire rows will be hidden if the values in one or more columns don't meet the filtering criteria.
In the access table, you clicked the arrow at the top of the StaffID column.
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So according to the video, one of the strengths of the articles of confederation as it gave congress the ability to deal with the foreign affairs and authority to declare war.
The following powers were asserted by Congress: to declare war and peace; to manage foreign affairs; to ask the states for men and money; to print money; and to regulate.
One of the advantages of the Articles of Confederation was the power it provided Congress.The creation of a powerful central authority was prohibited by the Articles of Confederation, which protected state sovereignty.
The strength or weakness of the Articles of Confederation Why?In accordance with the Articles, a loose confederation of independent states was established, with a small central government that gave the majority of power to the state legislatures. A stronger federal government was soon required, which prompted the Constitutional Convention in 1787.
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because volume-based allocation rates assign more cost to high-volume products, low-volume products are often undercosted.
The allocation of factory overhead to goods based on the quantity of production resources used is known as traditional costing.
What is Traditional Costing?According to the quantity of resources used in production, traditional costing divides factory overhead among products. With this approach, overhead is typically calculated based on either the number of hours of direct labor or the number of machine hours used. Traditional costing has the drawback that factory overhead may be substantially higher than the basis of allocation, causing a small change in the volume of resources consumed to result in a large change in the amount of overhead applied. This is a problem that is especially frequent in factories with high levels of automation, where direct labor is almost nonexistent and factory overhead is quite high.For instance, a conventional costing analysis might determine that factory overhead should be charged to products at a rate of $500 per direct labor hour. As a result, if there is a slight change in the production process that increases direct labor by one hour, the cost of the product has just increased by $500 of overhead. Given that there isn't always a direct correlation between the volume of production resources and factory overhead, such a significant change in applied overhead makes no sense.When overhead is simply applied to the quantity of produced units for the purpose of valuing ending inventory, traditional costing still serves financial statement reporting well. From the perspective of management decision-making, there are no repercussions.
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Complete Question.
it is important for leaders to be able to recognize obstacles because they provide cues for how leaders can help followers.
Obstacles are important for leaders to recognize because they provide clear cues for what leaders can do to help followers.
What is the obstacle means?Because they offer crystal-clear indicators for what leaders may do to assist followers, obstacles are crucial for leaders to recognize.an obstacle that stands in the way of followers and makes it challenging for them to achieve their goal.Action or progress that is impeded or prevented by something is referred to as an obstacle, obstruction, hindrance, or barrier.Anything that prevents literal or figurative progress, whether it be physical or intangible, is an obstacle:Advancement is hampered by a lack of imagination.A person's personality, talents, behavior, and cognitive limits can all be considered as obstacles.For instance, a student who wants to work in a highly visible field but has a severe fear of public speaking.
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computronics, a manufacturer of computer peripherals, has excess capacity. the company's utah plant has the following per-unit cost structure for item no. 89:
Variable manufacturing $ 60
Fixed manufacturing $25
Variable selling $8
Fixed selling $11
Traceable fixed administrative $4
Allocated administrative $2
The traceable fixed administrative cost was incurred at the Utah plant; in contrast, the allocated administrative cost represents a "fair share" of Computronics' corporate overhead. Utah has been presented with a special order of 5,600 units of item no. 89 on which no selling cost will be incurred. The proper relevant cost in deciding whether to accept this special order would be:
Variable manufacturing costs of $60 should be considered for deciding on whether to accept this special order as the relevant costs are always affected by the management decision.
Relevant costs:
Relevant cost is a management accounting term that describes the avoidable costs incurred only when making certain business decisions. The concept of relevant costs is used to eliminate unnecessary data that can make the decision-making process difficult.
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Which of the following statements are TRUE? Check all that apply The two terms: higher-order functions and first-class functions have the exact same meaning and can be used interchangeably The correct implementation of myfilter function is: myfilter (F,[H∣T])−> case F(H) of
true −> myfilter (F,T);
false−>[H∣myfilter(F,T)]
end. In the example provided in lectures, mymapper function is equivalent in its logic to lists:map In Erlang, when storing a function into a list, keyword function must be used, e.g. Funcs = [function isOdd, function isEven, function isPositive]. In Erlang, an anonymous function equivalent to isEven could be written as fun (X)−>X rem 2==0 end.
The implementation of my filter function is myfilter (F,T)
What is meant by class function ?When functions in a programming language are treated like any other variable, the language is said to have first-class functions. In such a language, for example, a function can be passed as an argument to other functions, returned by another function, and assigned as a value to a variable.
A first-class object is a programming language entity that can: Appear in an expression. Be given to a variable. Be used as a counter-argument. A function call will return this value.
JavaScript functions that can behave like variables are known as first-class functions. They can also be used to parse higher-order functions. Higher-order functions are those that either return a function or accept a function as an argument.
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data models show the organization of data without indicating how it is stored, created or manipulated whereas data models show how the data will actually be stored.
The organization of data without indicating how it is stored, created or manipulated Logical data model shows.
Data models describe Data Architecture and coordinate fundamental business principles with data definitions. Additionally, data models provide businesses and their clients with a detailed understanding of the relationships, data structures, and data flow between various entities, such as tables, programs, or data stores. A logical data model is a non-database-specific model that outlines the variables and their relationships that a company wants to gather data on. The physical data models provide specifics on how the data will be implemented, while the logical data models serve as a blueprint for the data that will be used. The logical data model will then be translated into the physical database's tables, columns, keys, and other elements by database administrators and application developers.
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which of the following preflight actions is the pilot in command required to take in order to comply with the united states code of federal regulations regarding day visual flight rules (vfr)?
A preflight action that the pilot in command is required to take in order to comply with the United States code of federal regulations regarding day visual flight rules is to verify the airworthiness certificate is legible to passengers.
What preflight actions are required for a pilot?For the preflight actions that are required for a pilot prior to every flight, pilots should gather all information vital to the nature of the flight, assess whether the flight would be safe, and then file a flight plan. Pilots can receive a regulatory-compliant briefing without contacting Flight Service.
A pilot in command may effectively accept a "land and hold short" (LAHSO) clearance in order to provide that he or she determines that the aircraft can safely land and stop.
Therefore, a preflight action that the pilot in command is required to take in order to verify the airworthiness certificate is legible to passengers.
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list the top 5 customers (first and last name) by totalsales (saleprice*quantity). use a subquery in the from clause to calculate the totalsales field.
Using a subquery:
SELECT CustID,
FName,
LName,
(SELECT Sum (Saleprice * quantity)
FROM SaleProduct SP
JOIN Sale s
ON SP.PurchaseID = s.Purchase ID
WHERE S.CustID = C.CustID) AS TotalSold
FROM Customer C
What is a subquery?
A subquery is a query that is contained within a SELECT, INSERT, UPDATE, or DELETE statement, as well as within another subquery. Anywhere an expression is allowed, a subquery can be utilized.
In addition to being known as an inner query or inner select, a subquery is also known as an outer query or outer select in the statement it is contained in. Many statements in Transact-SQL that contain subqueries can also be written as joins. Only via subqueries can other questions be posed.
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What is network connecting device? Explain
Answer:
Hardware devices that are used to connect computers, printers, fax machines and other electronic devices to a network are called network devices. These devices transfer data in a fast, secure and correct way over same or different networks. Network devices may be inter-network or intra-network.
Explanation:
configure the journal to be persistent across system reboots. make a configuration file that writes all messages with an info priority to the file/
Persistent journaling is a feature of the systemd journaling subsystem that enables the journal to survive reboot. This is useful for collecting logs from machines that are rebooted frequently, such as servers.
Answer Explanation:
To configure persistent journaling, create a configuration file that tells the journaling subsystem to write all messages with an info priority to the file /var / log / messages. info. The contents of this file should look like this:
This will tell the journaling subsystem to write all messages with an info priority to the file /var / log /messages . info, compress the journal files, and seal them so that they cannot be tampered with.
The journal will be synchronized to disk every 5 minutes, and will be rate-limited so that no more than 1000 messages are written per 30 seconds. Finally, the journal will be allowed to use up to 10% of the disk space on the system.
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What is card stacking propaganda technique?.
Answer: A technique generally applied through commercials
a system administrator needs to implement a secure remote administration protocol and would like more information on telnet. evaluate and select the features of telnet that the administrator should consider to accomplish this task. (select all that apply.)
The features of telnet that the administrator should consider to accomplish this task are:
Telnet does not support direct file transfer.
Telnet uses TCP port 23.
What is Telnet?The network protocol Telnet is straightforward and text-based. Using TCP/IP networks, such as the internet, some people have used and still use Telnet to connect to distant computers. It is possible to consider Telnet to be the first internet because it was developed and introduced in 1969.
For accessing a server's data in the past, you had to go there physically. This implied, among other things, that you would have to wait until it was your turn to interact with the server after spending some time traveling to their location.
You were unable to use the server to its full potential even if it had the hardware necessary to perform multiple tasks at once; instead, you had to wait for others to finish their work first.
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FILL IN THE BLANK. the___component of an enterprise resource planning (erp) system collects and analyzes relevant internal and external information needed by other functions.
The unified database component of an enterprise resource planning (erp) system collects and analyzes relevant internal and external information needed by other functions.
What is a ERP?The term "enterprise resource planning" (ERP) refers to a class of software that businesses use to oversee routine operations like accounting, purchasing, project management, risk management, and compliance.
Note that When a business combines all of its disparate data sources into a single, centralized view, it is said to have "unified data." Although unified data gives a more complete and accurate picture of a company's data, doing so is far from straightforward.
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a script developer is working on some new features for the administering linux servers and wants to add the features without changing the master branch. which of the following is the best command to use?
Since the script developer is working on some new features for the administering Linux servers and wants to add the features without changing the master branch. the term that is best command to use is git branch.
Why is Linux used in servers?A server that runs the Linux open-source operating system is referred to as a Linux server. It gives businesses a cheap way to provide their customers with information, apps, and services. Due to Linux's open-source nature, users also gain access to a large community of supporters and resources.
Therefore, Using branches in Git is a standard element of developing software. Git branches serve as a link to an image of your changes. No matter how big or tiny, you spawn a new branch to contain your modifications whenever you want to add a new feature or solve a bug.
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The date 8/3/2021 is stored in cell c1. What function is used to extract just 3?.
The date supplied as a serial number in cell c1 is converted to the day of the month using the Microsoft Excel formula =DAY(C1).
Dates are kept in Microsoft Excel as consecutive serial numbers so that computations may be made with them. Because January 1, 2008 is 39,448 days after January 1, 1900, it is serial number 39448 instead of the normal number 1, which is assigned on January 1, 1900.
Regardless of the display format for the supplied date value, the values returned by the YEAR, MONTH, and DAY functions will all be Gregorian values.
In Microsoft Excel, the DAY function returns the day of a date as a serial number. An integer in the range of 1 and 31 is used to specify the day.
The serial number in DAY(serial number) represents the date of the day you're looking for. Dates must be entered either directly or as the output of other formulas or functions, such as the DATE function. For the 23rd day of May 2008, for instance, use DATE(2008,5,23).
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insert another audio element below the h3 element, music option 2. add the controls attribute to the audio element. insert two source elements within the audio element and use the two audio-rock audio files contained within the /media folder.
The HTML audio tag with the h3 element is shown below.
Coding Part:
<audio controls>
<source src="horse.ogg" type="audio/ogg">
<source src="horse.mp3" type="audio/mpeg">
Your browser does not support the audio tag.
</audio>
What is HTML?
The HyperText Markup Language (HTML) is a set of markup symbols or codes that are inserted into a file for Internet display. The markup instructs web browsers on how to display the words and images on a web page.
Each individual piece of markup code (which would fall between "" and ">" characters) is referred to as an element, though it is also known as a tag by many people. Some elements come in pairs, indicating when a display effect will begin and when it will end.
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write a program which prompts the user for a celsius temperature, convert the temperature to fahrenheit, and print out the converted temperature.
print("——OR——") Input ("Temperature value in degree Celsius:"), celsius 2 = float) Celsius 2 = (Fahrenheit 2 * 9/5) + 32; print the result.
The user's input is taken. Enter the temperature in celsius by typing it into the input box. Fahrenheit is equivalent to (celsius multiplied by 1.8) + 32 print(str(celsius)+ "A degree in Celsius is equal to a " + str(fahrenheit)+ " degree in Fahrenheit. The change from C to F is therefore 100/180, or 5/9. It is 180/100 or 9/5 from F to C. As a result, the conversion yields °F = °C (9/5) + 32. As a result, the equation for changing from the Celsius to Fahrenheit scale becomes °F = °C (9/5) + 32. To convert from degrees Fahrenheit to degrees Celsius, do the inverse calculation: subtract 30 from the degrees Fahrenheit reading, then multiply the result by two to obtain the degrees Celsius reading.
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cloud computing allows client firms to acquire IT resources from vendors in strict accordance with long-term contracts that stipulate services. True or False
The Statement is True. This provides the client firm with a high degree of certainty regarding the costs and quality of the services they will receive.
Advantages of Cloud Computing for BusinessesCloud computing has become an increasingly popular way for businesses to acquire IT resources. This is because it allows businesses to enter into long-term contracts with vendors that stipulate the services that will be provided. This provides businesses with a high degree of certainty regarding the costs and quality of the services they will receive.
Cloud computing has a number of advantages over traditional methods of acquiring IT resources.
First, it is generally more cost-effective. This is because businesses only pay for the resources they use, and they are not responsible for the upkeep and maintenance of the resources. Second, cloud computing is more flexible. This is because businesses can scale up or down their use of resources as their needs change. Finally, cloud computing is more reliable. This is because businesses can be assured that the resources they are using are of a high quality and will be available when they need them.Learn more about Computing: https://brainly.com/question/25480553
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All of the following are specific security challenges that threaten the communications lines in a client/server environment except:
A) errors.
B) tapping.
C) theft and fraud.
D) radiation.
E) sniffing.
All of the following are specific security challenges that threaten the communications lines in a client/server environment except Radiation.
What is Radiation?
Radiation is energy that moves from one location to another in the form of waves or particles. In our day to day lives, we are always exposed to radiation.
The sun, microwave ovens in our kitchens, and radios we listen to in our cars are all common sources of radiation. The vast majority of this radiation poses no threat to our health.
However, some do. In general, radiation poses a lower risk at lower doses but can pose a higher risk at higher doses. Depending on the type of radiation, different precautions must be taken to protect our bodies and the environment while still allowing us to benefit from its numerous applications.
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create a paragraph element containing the value of summarize(mypizza). use the appendchild() method to append the paragraph to the cartbox element.
The paragraph element containing the value of summarize(mypizza):
var cartbox = document. getElementById("cart-box");
var mypizza = "The best pizza in town!";
var para = document. createElement("p");
var node = document. createTextNode(mypizza);
para. appendChild(node);
cartbox. appendChild(para);
Code Explanation: We first create a new <p> element. Then we create a text node. Then we append the text node to the <p> element. Finally, we append the <p> element to the <div> element with id="cart-box".Learn more about programming:
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if you were to look at a machine language program, you would see a a. java source code b. a stream of binary numbers c. english words d. circuits
Binary numbers are made up of a combination of 1s and 0s. As a result, a machine language program would appear as a stream of binary digits.
Machine language is the numerical code for the actions that a specific computer is capable of performing immediately. Binary digits, often known as bits, are strings of 0s and 1s that are routinely translated to and from hexadecimal (base 16) for human viewing and alteration. The fundamental language of computers is machine code, which is also referred to as machine language. It is made of digital binary integers, is read by the central processing unit (CPU) of the computer and appears to be a very lengthy string of zeros and ones.
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Suppose you are to design a LAN for a company that has 100 employees, each given a desktop computer attached to the LAN. What should be the data rate of the LAN if the typical use of the LAN is shown below: a. Each employee needs to retrieve a file of average size of 10 megabytes in a second. An employee may do this on average 10 times during the eighthour working time. b. Each employee needs to access the Internet at 250 Kbps. This can happen for 10 employees simultaneously. c. Each employee may receive 10 e-mails per hour with an average size of 100 kilobytes. Half of the employees may receive e-mails simultaneously.
The data rate of the LAN if the typical use of the LAN is shown below is that C. Each employee may receive 10 e-mails per hour with an average size of 100 kilobytes. Half of the employees may receive e-mails simultaneously.
What is a local area network?A local area network (LAN) is a computer network that connects computers within a specific geographic area, such as a home, school, laboratory, university campus, or office building. A wide area network, on the other hand, not only covers a greater geographic distance, but also typically involves leased telecommunication circuits.
A local area network (LAN) can serve as few as two or three users in a home office or as many as thousands of users in the central office of a corporation.
Local Area Networks (LANs) connect computers and provide shared access to printers, files, and other services. Local area network architecture is divided into two types: peer-to-peer and client-server.
In this case, this will be illustrated as:
100 KB/ Hr = 100 / 3600 = 0.028 KB/s
To calculate data rate add all values = ( 10240 + 31.25 + 0.028 ) KB/s
data rate of lan = 10,271.278 KB/s
= 10.031 MB/s
In conclusion, the correct option is C.
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if each key is mapped to a different index in the hash table, it is called . a. perfect hashing b. normal hashing
If each key is mapped to a different index in the hash table, it is called option A. perfect hashing.
What in a data structure is perfect hashing?Any collection of n elements can be kept in an equal-sized hash table using the perfect hashing model, and lookups can be completed in a fixed amount of time. It is known as "Hashing" because Fredman, Komlos, and Szemeredi (1984) are particularly credited with its invention and discussion.
Hence, A perfect hash function avoids collisions while mapping the set of actual key values to the table. A table that only contains as many slots as the key values to be hashed is used by a minimum perfect hash algorithm.
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ow do you format a valid date serial number as a date ? question 3 options: home (tab) ->number (command group) ->number format -> $ home (tab) -> number (command group) ->number format -> text home (tab) -> number (command group) -> number format -> fraction none of the options provided is correct
None of the options provided is correct as to how you format a valid date serial number as a date.
What do you mean by format?
A blank diskette, hard drive, or other drives can be made data-ready with the format command. All data would be deleted from the disk or drive if it previously contained data. For instance, typing "format C:" would completely erase everything on your computer's hard drive, including the operating system (e.g., Windows).
A document's or a spreadsheet's general layout is frequently referred to as its format or document format. As an illustration, the alignment of text in many English papers is to the left of the page. A user could modify the text's format to bold to emphasize certain words.
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