Answer:
c. organizing observations into distinct groups based on a measure of similarity
Explanation:
In the field of data science and machine learning, clustering is a technique that is used to identify sub-groups within a data set. This subgroups are called clusters because they share similarities. K-means is one technique of clustering where the algorithm iteratively tries to divide the data into a pre-defined K subgroup. k-means ensures that each data-point belongs to only one sub-group (cluster) and data-points in same cluster are as similar as possible.
K-means clustering is the process of organizing observations into distinct groups based on a measure of similarity.
Explanation:K-means clustering is the process of organizing observations into distinct groups based on a measure of similarity. It does not reduce the number of variables or estimate the value of a continuous outcome variable, nor does it agglomerate observations into nested groups. The algorithm assigns each point to exactly one cluster based on their attributes, aiming to create the most compact clusters possible.
The amount of RAM storage is measured in A: GB The rule of thumb that predicts that CPU capacity will double every 2 years is called _______ Law. A: Moore’s Law The processor market for desktop and laptop computers is dominated by A: Intel Which of the following does NOT determine processor power? A: LCD Which of the following activities is carried out by the ALU? A: Perform arithmetic calculations The CPU consists of which two parts? A: The control unit and the arithmetic logic unit The speed of a level of cache memory is impacted by A: The chip's proximity to the CPU
Answer:
1) Gigabyte (Ram Storage Unit)
2) Moore's Law ( states that computing power doubles after every two years)
3) Intel (Producers of computer processors)
4) LCD (Liquid Crystal Display is only concerned with the monitor display and has nothing to do with processor power
5) Control Unit and and the arithmetic logic unit
6) The chip's proximity to the CPU
Explanation:
The RAM which refers to the Random Access Memory is a storage device with capacity measured in units of gigabytes (GB). The computer generally store information in bytes and one gigabyte is the equivalent of 1 billion bytes.
A malware-infected networked host under the remote control of a hacker is commonly referred to as:
a. Trojan
b. Worm
c. Bot
d. Honeypot
Answer:
Option a: Trojan
Explanation:
A Trojan or Trojan horse is one of the computer malware that exist in computing world. Trojan often appears as a legitimate software to deceive user to activate it by social engineering. Once the Trojan is activated in the user computer, a hacker can remote control the infected computer for malicious purposes such as removing files, sending files, displaying message or rebooting computer.
However, Trojan cannot be replicated in the infected computer.
Answer:
Option C i.e., Bot is the correct option.
Explanation:
Because the bot is also a malware the infects the whole computer system and host's network by the hackers, using the remote control by which they remotely controlled the user's system without the permission of the user for the purpose of stealing the confidential data and the information from the computer system of the user they aimed.
While troubleshooting a recurring problem on your network, you will want to examine the TCP messages being exchanged between a server and a client. Which tool should you use?
Answer:
Wireshark
Explanation:
Wireshark is a free tool used to troubleshoot a network it was named wireshark in 2006 from ethereal due to trademark issues, it is especially used for examining the information exchange between the server and the client. You can analyze and read live data on different types of network. Wireshark is an important tool for network admins, QA engineers, developers, etc.
Refer to the following code segment. You may assume that array arr1 contains elements arr1[0],arr[1],...,arr[N-1], where N = arr1.length int count = 0; for (int i = 0; i < N; i++) if (arr1[i] != 0) { arr1[count] = arr1[i]; count++; } int[] arr2 = new int[count]; for (int i = 0; i < count; i++) arr2[i] = arr1[i]; If arr1 initially contains the elements 0, 6, 0, 4, 0, 0, 2 in this order, what will arr2 contain after the execution of the code segment?
Answer:
6, 4, 2 will be contained by the arr2.
Explanation:
In the following code execution the integer array variable "arr2" contain 6, 4, 2 elements because in the code, set integer type variable "count" and initialize to 0 then, set the for loop which starts from 0 and end at length of the array variable "arr1" then, set the if conditional statement and check condition the variable "arr1" is not equal to 0 then, the value of the variable "arr1" initialize in the variable "arr2".
If the encoding value is known, once can insert the corresponding character directly into a web page using the character encoding reference ______.
1. code;
2. &char;
3.
4. ©
Answer:
Option A i.e., &#code; is the correct option.
Explanation:
The following option is true because the following code is the HTML character set that is used for the encoding of the character reference into the web page. This character set is the encoding value that is inserted for the corresponding character set into the web page without changing their path. It is also used to add special characters in the HTML scripting language.
What scope would be set for a Custom Dimension that reports membership status for a customer rewards program?
A. Session.
B. Hit.
C. Product.
D. User.
Answer:
Option D is the correct answer.
Explanation:
The organization held a program for customer known as customer reward program in which the problem arises by the customer of a organization is get solved by the expert. It affects the organization's decision. It also helps to the organization on taking the decision for future enhancement because the customer is the key point for any organization.
This program is held because the organization wants to listen the customer and wants to know that which factor of the organization is cause the problem for customer or user so that the organization remove or modify that factor and their customer will happy. So the main scope of this program is for user which is described above. Hence Option D is the correct answer while the other is not because--
Option A states about session which used for online website data.Option B states about Hit which is used for any website.Option C states about product, but this program is for user.Mercury Technical Solutions has been using SSL in a business-to-business environment for a number of years. Despite the fact that there have been no compromises in security, the new IT manager wants to use stronger security than SSL can offer. Which of the following protocols is similar to SSL but offers the ability to use additional security protocols?
A. SSH
B. TLS
C. X.509
D. RSH
Answer:
B) TLS (Transport Layer Security)
Explanation:
SSL refers to secured socket layer, while TLS refers to Transport Layer Security. They are both security measures implementing crytography to ensure secured communication on a network especially in web and electronic mails. While very minor technical differences exist between these two protocols, SSL is veiwed as outdated because TLS uses stronger algorithms for encryption. The SSL is also unable to work on different ports unlike TLS.
A(n) ____ is an entry in a cell that contains text such as "2016 Sales" or "Travel Expenses."
A. value
B. label
C. formula
D. argument
Answer:
B- label
Explanation:
A label is an entry such as a text within a cell that describes particular rows and columns. Labels are usually found at the top of the particular row/column they are identifying.
Hence, the texts "2016 Sales" and "Travel Expenses" are labels that identify cells such as the values of the sales in 2016 of a company and expenses spent on travel in a year of a family.
A user has requested a field that counts the number of child records associated with a custom object. These custom objects have a lookup relationship between each other, which feature would best accomplish this requirement?
A. Apex Trigger
B. Roll-Up summary field
C. Lightning Process Builder
D. Visual Flow
Answer:
A. Apex Trigger
Explanation:
Apex Trigger: A trigger that gets executed before and after a record is Inserted/Updated/Deleted from the force.com database.
Syntax:
Trigger <trigger name> on <Object name> (trigger Events)
{
// your Logic here
}
Usually we use triggers when we have to perform such operations that are based on some specific conditions to modify related records. with Apex you can do SOQL and DML operations including;
Insert
Update
Delete
Merge
Upsert
Undelete
The feature that would best accomplish the requirement of counting the number of child records associated with a custom object through a lookup relationship is: B. Roll-Up summary field
Roll-Up summary fields allow you to calculate values from related records, such as counting the number of child records. It automatically updates based on changes to the child records, making it an ideal choice for this requirement.
A roll-up summary field would be the best choice for this requirement. Roll-up summary fields automatically calculate values from related records and can perform operations like counting the number of child records associated with a parent record.
To implement this, you would create a roll-up summary field on the parent custom object, choosing the appropriate relationship field and specifying the aggregation function as "Count." This field will then display the count of related child records, providing the user with the desired information without the need for manual calculations or complex logic.
A startup company has an idea for a new medical records application. The company wants to develop the application so it can be run on multiple OSs. However, they have limited funds to build the development environment that is necessary to create and test the application properly. What service should they consider?
Answer:
Cloud based service Public PaaS
Explanation:
Public PaaS (Platform as a service) refers to service running on a public cloud examples include AWS Elastic Beanstalk, Apache Stratos and Windows Azure. They provide computing environment that include multiple operating systems, databases, programming languages (in summary, servers, storage and infrastructure) are all provided which will best suit the start up company as stated in the question
Technician A says that the ECT and IAT sensors can be tested by using a digital multimeter or a scan tool. Technician B says that the ECT sensor is a high-authority sensor at engine start-up and is used for open-loop control, as well as idle speed. Who is right?Select one:a. Both technicians A and Bb. Neither technician A nor Bc. Technician A onlyd. Technician B only
Answer:
A) Both Techician A and B are correct
Explanation:
IAT refers to the Intake Air Temperature sensor while ECT refers to Electronically Controlled Transmission sensor. The IAT is a thermistor whose values changes based on the air temperature entering the engine, the ECT controls engine revolution. The statements in the questions by both technicians are correct
Final answer:
Both Technician A and B are correct. Technician A states that ECT and IAT sensors can be tested with a digital multimeter or scan tool, while Technician B underlines the importance of the ECT sensor during the engine start-up for open-loop control and idle speed regulation.
Explanation:
The correct answer is a. Both technicians A and B. Technician A is correct in saying that the Engine Coolant Temperature (ECT) and Intake Air Temperature (IAT) sensors can be tested using a digital multimeter or a scan tool. These tests can measure the electrical resistance of the sensors, which changes with temperature changes. Technician B is also correct, as the ECT sensor is indeed a high-authority sensor during engine startup. It significantly influences the engine's fuel management system by providing temperature data that the engine control unit (ECU) uses for open-loop control. This period of engine operation occurs before the oxygen sensors heat up and are able to provide feedback to the ECU. The ECT sensor also contributes to regulating the idle speed during a cold start, when the engine requires a higher idle speed to avoid stalling and to warm up efficiently.
Let's practice Audience analysis by going to the Google Merchandise Store demo account with a date range of Feb 1, 2016 - Feb 29, 2016 to answer the following question:
Under Audience in the Benchmarking > Devices report, select an Industry vertical of "Shopping > All Shopping," a Country/Region of "United States > All Regions," and daily session size of "5000-9999." Compared to the benchmark, which Device Category has the lowest "% New Sessions"?
a. Desktop
b. Mobile
c. Tablet
d. None of the above
Answer:
Option A.
Explanation:
Desktop have relatively the lowest percentage of new session. On the other hand, Mobile and tablet have a wide range of New sessions.
Data at Work: Best practices for creating effective charts and information graphics in Microsoft Excel by Jorge Camoes.
Answer:
Making a graph in Excel is a very simple task. For this you need only a small table with data like the following:
Once the range of the table is selected, we will select the «Insert» tag and then go to the «Graphics» group where we will select one of the graphs that Excel offers us and which we have explained previously. The steps you must follow can be seen in this image:
The great advantage of creating these charts in Excel is that you can edit very easily through the menu options and you can also change the chart type very easily.
A student receives an e-mail containing a Web address hyperlink. The e-mail instructs the student to go to the Web site to confirm his bank account number. When the student clicks on the link, it would take him to a phony Web site. This is an example of which of the following:
COMPLETE QUESTION
A student receives an e-mail containing a Web address hyperlink. The e-mail instructs the student to go to the Web site to confirm his bank account number. When the student clicks on the link, it would take him to a phony Web site. This is an example of which of the following:
A- pharming
B- worm
C- Trojan horse
D- phishing
Answer:
D) Phishing
Explanation:
In computing, phishing refers to a Web scam technique. It involves the sending of e-mail messages bearing the names of reputable organizations to unsuspecting people. Such emails will contain hyperlinks and victims will be asked to perform some task like confirmation of account numbers, In this process, their personal information like passwords and credit card numbers will be stolen.
The term _____ best describes the level of technology skills needed in today’s business world.A: computer knowledgeB: computer fluencyC: computer digitizationD: computer information
Answer:
The answer is "Option B"
Explanation:
The ability to learn and use basic computer hardware and software understanding to solve problems and to access information is known as computer fluency. and other options are not correct, that can be defined as follows:
In option A, computer knowledge is a basic general awareness, that helps the user to use the computer more fluently, that's why it is not correct. In option C, It is an internal feature of the computer, that helps to transfer data, that's why it is not correct. In option D, computer information is also known as data that is stored in the computer, that's why it is not correct.The local emergency manager has the responsibility for coordinating emergency management programs and activities. A local emergency manager is responsible for all of the following activities except for:_________
A: Managing resources before, during, and after a major emergency or disaster.
B: Coordinating the planning process and working cooperatively with response partners.
C: Developing an Incident Action Plan that specifies tactics for first responders
D: Identifying and analyzing the potential impacts of hazards that threaten the jurisdiction
Answer:
Option D is the correct option.
Explanation:
In the following statement, The manager of the emergency department has to manage the emergency management responsibility for the following programs and activities because the manager of the emergency department having control over identifying and analyzing the possible collisions of danger that threaten the jurisdiction.
Final answer:
A local emergency manager is not directly responsible for developing an Incident Action Plan, as this task is typically handled by incident response personnel such as the Incident Commander within the framework of the Incident Command System.
Explanation:
A local emergency manager is tasked with various critical responsibilities to prepare for and respond to emergencies, including natural disasters such as earthquakes. However, one specific task the local emergency manager is not directly responsible for falls outside of the typical scope of their duties. The correct answer for the activity they are not responsible for is:
Developing an Incident Action Plan that specifies tactics for first respondersLocal emergency managers are indeed involved in managing resources, coordinating planning processes, and analyzing potential impacts of hazards. However, the Incident Action Plan, which involves specific tactics for first responders, is typically developed at the incident level by the personnel directly involved in the response, such as the Incident Commander and the Planning Section Chief within the framework of the Incident Command System (ICS). The local emergency manager helps to coordinate broader efforts, but the tactical details of on-scene incident management are not typically under their purview.
To assist with controlling orphaned and dormant accounts, what can be used to indicate when an account is no longer active?
Answer:
Account Expiration is used
Explanation:
Orphaned account is linked to an inactive employee. This means that even after an employee has left an organization, this account remains active.
A dormant account has not been accessed and had no activity for a lengthy period of time.
These type of accounts are a security vulnerability. For example an employee who has left the company in some unpleasant circumstances can steal confidential information using his account. To handle the dormant and orphaned accounts there should be a process that disables the account for employees who have left or dismissed and employee's access to the account should be ended right away. Moreover monitoring the accounts helps to restrain using other accounts. So the security risk can be reduced using account expiration. This involves the use of automatic expiration date for the user accounts or to set an account to expire once the its password is expired for a certain number of days. So the account will be automatically disabled when the contract period of the employee is ends.
True or false: The sensory regions of the brain are more vulnerable to shrinking with age than areas such as the prefrontal cortex.
Answer:
False
Explanation:
The "last-in, first-out hypothesis" is a widely accepted explanation for the effects of aging on the brain. This hypothesis entails that the areas of the brain that mature last are the first ones to age or thin out with passage of time. Therefore, the pre-frontal cortex, the cerebellum and hippocampus suffer the most thinning with age.
Using python,
At one college, the tuition for a full-time student is $8,000 per semester.
It has been announced that the tuition will increase by 3% each year for the next five years.
Write a program with a loop that displays the projected semester tuition amount for the next five years as:
Answer:
Explanation:
We can use for-loop in python to calculate the tuition amount in the next 5 years. If the tuition is increasing 3% each year, in each loop we can multiply the amount by 1.03
tuition = 8000
for year in range(1,6):
tuition *= 1.03
print("The tuition amount after " + str(year) + " year(s) is $" + str(tuition))
In this exercise we have to use the knowledge of computational language in python to write the following code:
The code can be found in the attached image.
That way, to find it more easily we have the code like:
tuition = 8000
for year in range(1,6):
tuition *= 1.03
print("The tuition amount after " + str(year) + " year(s) is $" + str(tuition))
See more about python at brainly.com/question/26104476
According to security vendor Finjan Software, a bug in Google could have allowed attackers to grab a Google user’s ____.
Answer:
The correct answer for the given question is "cookie".
Explanation:
In the security of vendor Finjan Software, a bugs or error in the google could allowed the attackers the grab the information of google users account i.e cookie.The cookie gives all the information of google account OF that user because it is stored in the client side machine that means it stored in the web browser .all the information of particular user are stored in the browser with the help of cookie attackers easily grab the information by using cookie and harm the user.
When describing the pattern in the wallpaper, Gilman writes, "You think you have mastered it...but it turns a back somersault and there you are. It slaps you in the face, knocks you down, and tramples upon you. Like a bad dream." This is an example of what literary device?
Final answer:
The literary device used in the wallpaper description by Gilman is personification, which assigns human traits to the wallpaper to convey the narrator's sense of confusion and entrapment.
Explanation:
The passage you are referring to from the wallpaper description by Gilman uses a literary device known as personification. Personification gives human characteristics to inanimate objects, phenomena, animals, or ideas. This technique is employed to create vivid imagery or to convey emotions and moods more effectively. In the quoted segment, the wallpaper is described as if it has human abilities and emotions: it turns a back somersault, slaps you in the face, knocks you down, and tramples upon you, as it is like experiencing a bad dream. These human-like actions attributed to the wallpaper intensify the sense of confusion and entrapment the narrator feels.
Which of the following is true regarding the use of instance variable j in class B1?
A) It is directly accessible only in B1
B) It is directly accessible only in B2
C) It is directly accessible only in B3
D) It is directly accessible in B1 and B2
E) It is directly accessible in B1, B2, and B3
Answer: A) It is directly accessible only in B1
Explanation: In the given chunk of code, Class B1 is a base class. Class B2 is derived class of class B1. Class B3 is derived class of B2. As you can see class B1 has two members or instance variables i and j. Instance variable cannot be directly accessible by both B2 and B3. If you see this statement of the given code private int j; the keyword private is used with the variable j. This keyword is called access specifier. Access specifiers specifies how the members of a class can be accessed. These members are attributes and methods of that class. Any member of a class that are declared private cannot be inherited by derived classes of that class. Additionally these private members cannot be accessed from within any method inside derived class. So j is directly accessible only in B1. You can access a private instance variable from within the same class or can access it through the methods of class.
If you enter the formula, =B2-B5-B6 into cell B7, the answer would be ____.
A. 70
B. 80
C. 30
D. 10
Please insert an image to refer to
Answer: 30
(Got it right on Odyseyware)
What field in an IPv4 packet is altered to prioritize video streaming traffic over web surfing traffic?
Answer:
DiffServ (Differentiated Service)
Explanation:
DiffServ (Differentiated Service) field is used to prioritize traffic in IPv4 packet.
DiffServ is used as QoS (quality of service) on networks at Layer 3, replacing former IPv4 TOS field to effectively deal with the web traffic and prioritization issues starting from 1998.
By using colocated, replicated hardware and software, cloud solution providers reduce many threats to IT resources.
A. TrueB. False
Answer:
A. True
Explanation:
Colocation is simply the renting of data centers that are located somewhere else, here the managing and maintenance is totally taken care of by the service provider, all you need to do is pay for the service where they handle the maintenance, cooling, power. etc for you. It is so helpful in such a way that you can have a high reliable data center so that you work effectively in exchange for some money.
Bob is designing input screens for a re-designed system for the shipping and inventory department. For order forms, he puts Zip code first (as the database will take the zip code and look up the city and state); for receiving forms, he puts them in the order of city, then state, then zip code. His design choices will help experienced users be more productive.
Answer:
The correct answer to the following question is False.
Explanation:
Because he uses the wrong method for receiving form because by using the database commands he can get both order and receiving forms at a time but he firstly uses database for the order form then again use database for receiving form which is time-consuming. he can get both of the forms by using the Join by which he can merge tables to get convenient result.
Explains the strategic design choices Bob made for input screens based on zip code, city, state, and order of information for enhanced productivity in the shipping and inventory department.
Zip code plays a crucial role in database management, allowing for efficient retrieval of location-based information. In Bob's design choices for input screens, placing zip code first on order forms streamlines the process by utilizing the database to look up city and state details.
For receiving forms, sorting information in the order of city, state, then zip code optimizes the workflow for local delivery. This tailored approach enhances productivity for experienced users in the shipping and inventory department.
Overall, Bob's strategic positioning of data fields aligns with best practices in user experience design, demonstrating a keen understanding of information organization based on context and workflow efficiency.
"On a TCP/IP network, which of the following are used by a router to determine the destination of a packet?"
Answer: Switching packets function.
Explanation: while the main function of a router is to forward packets to their target destination, this can be actualised by adopting a switching packet function.
Switching packet function is the process which the router uses to accept a packet from one interface and passes it to another interface. The main function the switching packet plays is to encapsulate the packets in the right data link frame type for the data link meant to be sent out.
The switching is about moving the packet to the right destination without been mistaken with the layer 2 switch function.
A user reports that the PC displays a warning message. The warning message indicates that the PC is infected by a virus. A technician comes with a USB drive that contains a malware detection and removal program. What should the technician do before running the program
According to the reports of the user, the PC displays a warning message. According to the displayed message, the PC is infected by a virus. The technician's USB drive is equipped contains malware detection and removal program.
Explanation:
Before inserting the USB drive and running the program, the technician should examine the displayed message and try to determine the source of the message.
Before putting the malware detection and removal program to work, the technician should make sure that there are no other factors and sources causing problems in the PC. Asking the user about any past similar encounters will be a plus.
What the technician do before running the program is to quarantine the virus or format the flash drive.
What is PC that displays a warning message?A warning message are known to be brief or quick messages that often pop up to inform users of some issues with a system.
They are said to be displayed at the beginning of programs or operating systems, or when a person is said to be accessing public Web sites. This message is often shown when running the program that have virus attached to it and so one should quarantine the virus or format the flash drive.
Learn more about warning message from
https://brainly.com/question/1400514
To employ an access key, press and hold down the ____ key as you tap the access key.
a. Backslash
b. Alt
c. Scroll
d. Tilde
To use an access key, you should hold down the b. 'Alt' key. This key is used for various shortcuts in software, such as inserting an equation with 'Alt' + '=' or a degree symbol with 'Alt+0176'.
To employ an access key, press and hold down the Alt key as you tap the access key. This is a common shortcut used in various applications to activate certain features quickly. For example, to insert an equation in certain software, you can use the shortcut "Alt" + "=" (press the "Alt" key and the "=" key simultaneously.
Additionally, if you want to insert a Degree Symbol in Word or Excel, the shortcut is holding down the Alt key and typing 0176, which is Alt+0176. Another interesting fact is that on German keyboards, to type the "a" symbol, the combination is "Alt Gr" key plus "Q" because the layout is different compared to American keyboards.
Each time Kevin re-reads his JAVA book(which happens every month), he learns 10% of whatever material he didn’t know before. He needs to score at least 95% on the comprehensive exam to become a certified JAVA developer. When Kevin’s started, he knew nothing about JAVA . Write a method that simulates Kevin’s learning progress and returns the number of months it will take him to get ready for the exam. Write a main method that displays the result (in years and months).
Answer:
The java main method that can be used to display the number of years and months to get ready for the exam is explained below.
Explanation:
public class GetMonths {
public static void main(String[] args) {
int noofmonths = 0;
int noofyears = 0;
double percentnotknown = 100;
double percentKnown = 0;
while (percentKnown<95) {
percentnotknown *= 0.9;
percentKnown = 100 - percentnotknown;
noofmonths++;
if (noofmonths==12) {
noofyears++;
noofmonths = 0;
} // end if
} // end while
System.out.println("After "+noofyears+" years, "+noofmonths+" months,");
System.out.println("Percentage known = "+percentnotKnown);
} // end main()
} // end class
Answer:
below
Explanation:
public class GetMonths {
public static void main(String[] args) {
int noofmonths = 0;
int noofyears = 0;
double percentnotknown = 100;
double percentKnown = 0;
while (percentKnown<95) {
percentnotknown *= 0.9;
percentKnown = 100 - percentnotknown;
noofmonths++;
if (noofmonths==12) {
noofyears++;
noofmonths = 0;
} // end if
} // end while
System.out.println("After "+noofyears+" years, "+noofmonths+" months,");
System.out.println("Percentage known = "+percentnotKnown);
} // end main()
} // end class