Answer:
Let X be the number of users that do not close Windows properly before someone does including that
person. Then X has a geometric distribution with a success rate of p = 0.9. The expected value of
X is given as 1/p = 1.1111. Define a random variable Y to be the number of users that do not close
windows properly before someone does, not including the final person who closes windows properly. If
X = 1, then Y = 0; if X = 2, then Y = 1; if X = 3, then Y = 2, etc. In general, if X = k, then
Y = k − 1, so we can write Y as a function of X: Y = X − 1. Therefore, E[Y ] = E[X] − 1 = .11111.
The random variable Y has a modified geometric distribution with p = .9.
Explanation:
A Color class has a constructor that accepts three integer parameters: red, green and blue components in the range of 0 ... 255 with 0 representing no contribution of the component and 255 being the most intense value for that component. The effect of full or semi-transparency can be achieved by adding another component to the color called an alpha channel. This value can also be defined to be in the range of 0...255 with 0 representing opaque or totally non-transparent, and 255 representing full transparency. Define a class AlphaChannelColor to be a subclass of the Color class. AlphaChannelColor should have the following: - an integer instance variable alpha - a constructor that accepts four parameters: red, green, blue and alpha values in that order. The first three should be passed up to the Color class' constructor, and the alpha value should be used to initialize the alpha instance variable. - a getter (accessor) method for the alpha instance variable
Answer:
The following are the code in the Java Programming Language.
//define a class and inherit the other class
public class AlphaChannelColor extends Color {
//define constructor and pass arguments
public AlphaChannelColor(int red, int green, int blue, int alpha) {
super(red, green, blue);
this.alpha = alpha;
}
//define function
public int getAlpha()
{
return alpha;
}
//declare a private type variable
private int alpha;
}
Explanation:
The following are description of the program.
Firstly, define a class 'AlphaChannelColor' that inherits the other class that is 'Color' through the extend keyword. Define the constructor (in Java, the class name and the name of the constructor remain same) and pass four integer data type arguments 'red', 'green', 'blue' and 'alpha' in its parameter. Define the integer data type function 'getAlpha()' that returns the value of the variable 'alpha'.The next generation of 3-D video will be based on _____ technology, where a viewer will be able to get different views of the scene by moving her head or walking around the display. This will involve dynamic depth cues that result from the viewer’s own motion, not just from the motion of objects in the scene.
Answer:
Virtual Reality Technology
Explanation:
Virtual reality is a simulation based computer technology which imitates the real world and provides real life like experience. One of the key applications of virtual reality is 3D video games where users use VR headsets and get immersed into the world of simulated reality. VR technology also incorporates sensory inputs from the user, their physical movement gets translated in real time and they can move around and interact with various features. They can also sense dynamic depth which provides a real world experience.
Samantha was hired to perform an internal security test of company XYZ. She quickly found that all networks are making use of switches instead of traditional hubs. This greatly limit her ability to perform network sniffing for information gathering. Which of the following techniques could she use use to gather information from the switched network or to disable some of the traffic isolation feature of the swtich?a. sniff in promiscuous mode b. ethernet zapping c. ARP spoofing d. TCP session hijacking
Answer:sws
Explanation:swwswswsswswsw
Recall that TCP can be enhanced with SSL to provide process-to-process security services, including encryption. Does SSL operate at the transport layer or the application layer? If the application developer wants TCP to be enhanced with SSL, what does the developer have to do?
Answer:
SSL has operate in Application Layer to encrypt the information from user and pass it to the TCP. To enhance TCP security developer can integrate the code of SSL with application layer.
Explanation:
SSL certificate is used to enhance the security of user data and encrypt the information of passwords, data transfer and other information to make it secure. This certificate is installed at application layer to make all the information secure and send it to the Transmission Control Protocol (TCP) to send it further. The TCP can be enhanced more by adding SSL code to the application Layer of the Network.
The analysts at Techno Info Systems are considering the four-model approach to system development for a new client. If they make use of the four-model approach, which of the following is a likely outcome?
A. It will not be possible to get ac clear picture of the current system functions before modifications are made.
B. Time taken to develop the model increases.
C. The requirements of a new information system will always be different from the current information system.
D. Costs need to develop a logical and physical model of the current system will be less.
Answer:
Option B is correct.
Explanation:
Within Techno Info Systems the user has been analyst contemplating that four-model concept towards computer development for such its new customer. When they adopt that four-model method, thus the result seems to be the time taken to implement the rises in the method.
So, therefore the other options are incorrect according to the following scenario.
Final answer:
Using the four-model approach to system design likely leads to an increase in the time taken to develop the model, as it entails creating complex and detailed models to replace the real system for analysis.
Explanation:
If the analysts at Techno Info Systems employ the four-model approach to system development for a new client, a likely outcome is that time taken to develop the model increases. This approach involves creating different models, each with its purpose and complexity. For instance, understanding ecosystem dynamics necessitates analytical and simulation models that can predict the consequences of changes within an ecosystem. Similarly, a four-model approach in system development requires meticulous detail, and this extensive modeling aims to replace the real system with an easier-to-examine version, ultimately providing more reliable predictions and a detailed design.
However, as the complexity of models increases with the aim of better accuracy and understanding, it also often leads to longer development times. While the models serve to understand the system before making modifications, a more detailed four-model approach means investing more time to build and analyze each model. One must balance the drive for comprehensive understanding against the requirement to deliver results in a timely manner.
Windows 10 features a storage solution called Storage Spaces. What is the name of the Storage Spaces feature that allows allocating space for redundant information using options that include two-way mirroring, three-way mirroring, and parity
Answer:
Data resiliency.
Explanation:
Spaces for storage may involve resilience to the information. Selecting a resiliency solution implies whether they assign capacity towards redundant details. The information resiliency choice regarding storage facilities.
Two-way mirror needs two capacity units or more. The information is engraved on both computers. Two-way mirror enables twice the volume of storage assigned to that of the storage capacity as such system capacity. This choice will prevent you against loss of a specific storage unit.
You have a server with Windows Server 2012 R2 installed on Disk 0, a basic disk. You use the server to store users' documents. You have two more disks that you can install in the server. What should you do if you want to provide fault tolerance for users' documents
Answer:
Create a RAID 1 volume from Disk 1 and Disk 2.
Explanation:
To provide fault tolerance for users' documents we should create a RAID 1 volume from Disk 1 and Disk 2.
After class, Anita and Bev make plans to study for their psychology exam together but cannot decide on a time or location. In addition, Anita realizes that she left her phone in her apartment. Anita and Bev change their mind and agree that it is easiest simply to meet at Bev's dorm. Bev gives Anita her room number and passcode. Anita likely will be able to retain this information in short-term memory, without additional processing, for:_________.a. a second or lessb. 30 seconds or lessc. about two minutesd. a maximum of five minutes
Answer:
Option B; 30 SECONDS OR LESS.
Explanation:
Short-term memory, also known as primary or active memory, is the information we are currently aware of or thinking about.
When short-term memories are not rehearsed or actively maintained, they last mere seconds.
Most of the information kept in short-term memory will be stored for less than 30 seconds (approximately 20 to 30 seconds), but it can be just seconds if rehearsal or active maintenance of the information is not done.
Therefore, Anita likely will be able to retain the information in short-term memory, without additional processing, for 30 SECONDS OR LESS.
A website that sells high-end ties notices that its ads are showing up for searches that include "cheap". Because its ties are expensive, it does not want its ads to show up for searchers using the word "cheap". What should this advertiser do?
Answer: Add "cheap" to the negative keyword list.
Explanation: Pretty self explanatory, by adding a negative keyword It should not use that word if searched to find people to advertise to.
The __________ stage of the data science process helps in converting raw data to a machine-readable format.
Answer:
The answer is "Data Cleaning".
Explanation:
In the given question some information is missing, that is the option of the question, which can be described as follows:
A) Data Gathering
B) Data Description
C) Data Cleaning
D) Exploratory Data Analysis
Information cleaning is the method of processing information, that may not be accurate, complete, obsolete, replicated. It is used in to review the deleted and changing information, and certain options choice is incorrect, that can be explained as follows:
In option A, It is used in collecting data. In option B, It provides the details about the data. In option D, It is used in the statistical model for analyzing the data.Of the measures of feasibility in the accompanying figure, ____ considers points such as "Does the proposed platform have sufficient capacity for future needs?" and "Will the hardware and software environment be reliable?"
a. schedule feasibility
b. technical feasibility
c. economic feasibility
d. operational feasibility
Answer:b. technical feasibility
Explanation: Technical feasibility is an important tool for both troubleshooting and maintenance,it is the process through which an expert evaluates a process or a product in order to determine what can either be achieved or to the extent to which a certain action will lead to a tangible result.
Technical Feasibility is one of the most important factor when making decisions on the use of materials or equipments in a particular environment or condition.
A recent antivirus scan on a server detected a Trojan. A technician removed the Trojan, but a security administrator expressed concern that unauthorized personnel might be able to access data on the server. The security administrator decided to check the server further. Of the following choices, what is the administrator MOST likely looking for on this server?
a. Trojan
b. spyware
c. adware
d. ransomware
Answer:
B. Spyware
Explanation:
Spywares are silent software that steals sensitive information such as internet or company data, and other similar information. They are oftentimes unnoticed and supply stolen data to external users, data centers or advertisement companies.
Sophisticated spyware can go as far as installing software to manipulate your settings or use passwords on your behalf.
Even though the Trojan was detected in our scenario, The Trojan would have created a backdoor to allow spyware in. This spyware will not be easily noticed by the technician or the antivirus, however, it could be more devastating than the Trojan.
That is why the security administration expresses concern over a breach despite the removal of the Trojan.
The analysts at Techno Info Systems are considering the four-model approach to system development for a new client. If they make use of the four-model approach, which of the following is a likely outcome?
A. It will not be possible to get ac clear picture of the current system functions before modifications are made.
B. Time taken to develop the model increases.
C. The requirements of a new information system will always be different from the current information system.
D. Costs need to develop a logical and physical model of the current system will be less.
Answer:
B
Explanation:
...if they make use of the four-model approach, the time taken to develop the model would increase.
Cheers
The computer program that Josh is working on presents him with a sentence in which a word has been underlined. Josh has to indicate the part of speech represented by the underlined word. After receiving feedback about the correctness of his response, Josh is given another sentence with an underlined word. This description best illustrates what type of computer-based instruction (CBI) program?
Answer:
Drill and practice.
Explanation:
That system program for which Josh works provides himself with such a sentence stressing a phrase. He must signify that portion of speech described by that of the term that has been emphasized.
He being provided a further statement with such an underlined term while getting suggestions regarding the current consistency for his answer This definition is the best demonstration of CBI system Drill and practice.
In older existing installations, where an equipment ground does not exist in a metal switch box that is located within reach of a conductive floor such as tile or cement, NEC 404.9(B) requires the use of what kind of faceplate
Answer:
A metal faceplate with grounding means
Explanation:
metal faceplate with grounding means is required in older existing installations, where an equipment ground does not exist in a metal switch box that is located within reach of a conductive floor such as tile or cement.
Answer:
The NEC requires the use of a metallic faceplate for this situation.
Explanation:
NEC 404.9(B) requires a metal faceplate having a means for grounding to be used in older installations where there is no ground for an equipment in a metal box switch located within a conductive floor. There is however an exception which states that as long as the wiring method does not have anything to do with an equipment-grounding conductor, it is required that a snap switch that is wired and located within reach of conductive floors must have a nonmetal faceplate or protected by an interrupter.
Show the printout of the following code.
public class Test {
public static void main(String[] args) {
double[][] m = {{1, 2, 3}, {1.5, 2.5, 3.5}, {0.1, 0.1, 0.1}};
System.out.println(sum(m));
}
public static double sum(double[][] m) {
double sum = 0;
for (int i = 0; i < m.length; i++)
sum += m[i][i];
return sum;
}
}
A). 3
B). 4
C). 4.0
D). 3.6
E). 3.0
Answer:
E. 7.0
Explanation:
the 7 of the out of the older and make a shame of waves and force of trying
A stack is initially empty, then the following commands are performed: push 5, push 7, pop, push 10, push 5, pop, which of the following is the correct stack after those commands (assume the top of the stack is on the left)? A. 5, 10, 7, 5.
B. 5, 10.
C. 7, 5.
D. 10, 5.
Answer:
d
Explanation:
An IT department submits a purchase order to buy a new computer from a vendor. "Purchase orders" are documents issued by buyers that indicate a purchase they want to make from a seller. Which stage of the hardware lifecycle does this scenario belong to?
Answer:
Procurement
Explanation:
Characteristics hardware lifecycle:
Procurement- Acquiring new IT hardware assets involves evaluating vendors, purchase orders, receiving, and device labeling.Deployment - Hardware configuration and installment, placing hardware and software assets into production environments.Maintenance & Support - Management of assets include scheduling scans and getting audit history.Upgrade - Before you retire your IT hardware assets, you’ll reach a processing plateau that can be restored with hardware upgrades.The scenario belongs to the Procurement stage of the hardware lifecycle.
Explanation:The scenario described belongs to the Procurement stage of the hardware lifecycle.
During the procurement stage, the IT department submits a purchase order to buy the new computer from a vendor. A purchase order is a document issued by buyers that indicates a purchase they want to make from a seller. This document initiates the process of acquiring the computer.
Other stages of the hardware lifecycle include Planning, Acquisition, Implementation, and Retirement.
You are flying on an ifr flight plan at 5500 feet with a vfr on top clearance when you encounter icing. you know there is clear air above and you request 9500 feet from atc they deny the request. A. Yes, you are still IFR with a VFR-on-top clearance.
B. No, you are now VFR.
C. No, your VFR-on-top clearance has been canceled.
Answer:
A. Yes, you are still IFR with VFR-on-top clearance
Explanation:
Instrument Flight Rules (IFR) and Visual Flight Rules (VFR) are regulations controlling the operations of civil aviation. Pilots use these terms as well to describe their flight plan.
When your request is rejected to fly 9500 feet from atc, your VFR-on-top clearance is still active and you are still IFR.
An optimal solution to a linear programming problem MUST lie A. somewere on the line between two corner points. B. somewhere outside of the feasible region. C. somewhere in the interior of the feasible region. D. at the intersection of at least two constraints.
Answer:
D. at the intersection of at least two constraints.
Explanation:
Linear programming is an optimization technique which is fine for the purpose of getting the best solution such as maximizing profit or certain o 4th era quantities. It is fine by modelling real life problems into mathematical models that have linear relationships or constraints such as in the form of objective functions. In linear programming, an objective function defines the formula for quantity optimization and the goal from this is to determine variable values that maximize or minimize the objective function depending on the problem robbery solved.
What is the name of the virus that appears to be a legitimate program but when opened
Answer: trojan horse virus
Explanation:A trojan horse is a non-replicating program that looks legitimate, but it is actually used to perform malicious and illicit activities when launched. Attackers use trojan horses to steal a user's
personal information like password information, or they may simply use it to destroy programs or data on the hard disk.
Assuming that a user enters 5 as the age, what is the output of the following code snippet? int age = 0; Scanner in = new Scanner(System.in); System.out.print("Please enter your age: "); age = in.nextInt(); if (age < 10) { System.out.println("Kid"); } if (age < 30) { System.out.print("Young"); } if (age < 70) { System.out.print("Aged"); } if (age < 100) { System.out.print("Old"); }
You are tasked with accumulating survey data on a web page and are responsible for it being free from dirty data once you close the survey and get the data to the researching team. Which is the best way to handle the possibility of dirty data?
Answer:
Build a website that validates data as the survey participant takes the survey.
Explanation:
Whenever a user is charged towards gathering survey information on such a webpage and seems to be liable for freeing this against bad data when the survey is closed as well as the data will be sent to the testing group.
Creating a platform that validates information is just the easiest approach to tackle the risk of bad results as when the research user completes the test.
You work as the IT administrator for a small corporate network. One of the company employees needs to add an additional PCI card to the motherboard. When you open the computer, you see that the card purchased will not fit due to the card's height.
The question involves a compatibility issue with a PCI card's installation in a small corporate network's computer system. It requires an understanding of the technical specifications and form factors of both the motherboard and the PCI card to resolve the problem.
Explanation:The subject of the question pertains to installing additional hardware in a computer, specifically within the context of Computers and Technology. The scenario at hand deals with a physical compatibility issue between a PCI card and the available space on the motherboard concerning the card's height. It is important to recognize that there are different sizes of PCI cards, including standard and low-profile cards, and they must match the specifications of the available slots to ensure a proper fit. This might require purchasing a different type of PCI card or utilizing a different slot that accommodates the card's dimensions.
Your networking card is crucial for connecting your system to a network but encountering a compatibility issue requires quick problem-solving to maintain productivity in a corporate environment. The key to resolving this issue lies in understanding the technical specifications of the motherboard and the PCI card, and then taking appropriate action either by exchanging the card for one with the correct form factor or modifying the arrangements inside the case if possible and if not against company policy.
Use of the Internet for recruiting is: a. popular with job seekers, but not recruiters. b. the most commonly used search tactic by job seekers and recruiters. c. cheaper and easier, but less effective than other methods. d. popular with recruiters, but not job seekers.
Answer:
the most commonly used search tactic by job seekers and recruiters.
Explanation:
Internet is used in various ways and both job seekers and recruiters can take advantage of this to look for jobs and hire respectively. Most business use this platform to help open doors to very many candidates. Almost everything nowadays in most situations is conducted online, from posting job ads, to emailing successful candidates to setting up interviews through video calls. Posting a job ad online widens the radius for interested candidates and most businesses are not constrained while trying to look for the perfect applicant. In America alone, almost 80% of Americans take leverage of the online resources to look for open job positions.
Which collaboration technology is becoming more and more popular within organizations because it provides a means for forming ad hoc groups, networking and locating potential business allies?
a) Intranet
b) Wikis
c) VoIP
d) Social networking sites
e) Unified communications
Answer:
d) Social networking sites
Explanation:
-Intranet is a network that is created by an organization to share information, tools and different services inside the company.
-Wikis are websites used to share content and knowledge and different users can modify the information.
-VoIP is a technology that allows you to make calls over the internet.
-Social networking sites are online platforms that allow people to connect with organizations and other people, create communities online and share different types of information.
-Unified communications is a system that has different communication methods through a single application.
According to this, the collaboration technology that is becoming more and more popular within organizations because it provides a means for forming ad hoc groups, networking and locating potential business allies is social networking sites.
Suppose the beta of Microsoft is 1.13, the risk-free rate is 3 percent, and the market risk premium is 8 percent. Calculate the expected return for Microsoft.
Answer:
8.65%
Explanation:
Rj = Rf + risk premium.
Rj = Rf + β[E(RM − Rf)].
= 3 + 1.13 (8 - 3)
= 3 + 1.13 x 5
= 3 + 5.65
= 8.65 percent
This relationship between risk and expected return is called the security market line.
The expected return for Microsoft, using CAPM and the given risk-free rate, beta, and market risk premium, is 12.04 percent.
To calculate the expected return for Microsoft, given that the beta of Microsoft is 1.13, the risk-free rate is 3 percent, and the market risk premium is 8 percent, we can use the Capital Asset Pricing Model (CAPM). The CAPM formula is:
Expected Return = Risk-Free Rate + (Beta Times Market Risk Premium)
Plugging in the given values:
Expected Return = 3% + (1.13 Times 8%)
Expected Return = 3% + 9.04%
Expected Return = 12.04%%
Therefore, the expected return for Microsoft is 12.04% percent.
You want to allow members of the users group to use fdisk on the /dev/sda drive (and only that drive) and to use the yum command to update and install packages. Which command do you run?
Answer:
su ,sg and sudo command.
Explanation:
Whenever the user needs to enable workgroup mates should use fdisk including just that disk on both the /dev / sda disk, using the following command to update and configure the following packages. Thus he uses the command su, sg, and sudo.
So, the following commands are required according to the following statement.
What happened if the offshore team members are not able to participate in the iterations demo due to timezone/infrastructure issues?
a) No issues. Onsite members can have the iteration demo with the product owner; it a single team anyway.
b) Offshore members will miss the opportunity to interact with product owner and get the direct feedback about the increment they created.
c) No Major issue. Since offshore lead and onsite members participate in the demo with the product owner, they can cascade the feedback back to the offshore members.
d) It is a loss as the offshore members will not be able to contribute to the ideas releated way of working
What happened if the offshore team members are not able to participate in the iterations demo due to timezone/infrastructure issues-(c) No Major issue. Since offshore lead and onsite members participate in the demo with the product owner, they can cascade the feedback back to the offshore members.
Explanation:
No Major issue. Since offshore lead and onsite members participate in the demo with the product owner, they can cascade the feedback back to the offshore members.
From the above statement it is clear that in case the offshore team members are not able to participate in the demo with the product owner due to timezone/infrastructure issues it want be a big issue since the onsite members of the team will participate in the demo and they can give all the valuable knowledge and feedback to the offshore members.As they all are part of the very same team
Hence the option(3) is the correct option
structure for forloop?
Answer:
for ( initialization; condition;increment)
{
code goes here;
}
in python:
for i in list/range:
code with proper indentation
By initialization above we mean, like int i=0; etc.
By condition like i<10;
and by increment it means like i++, ++i or i+=1; etc
And in python, i can be an integer value if the range is mentioned, and it can be an item of a list if the list is used. We can also use an array, string and various other data structures in python. like we can have characters in a string and so on.
Explanation:
Please check the answer section.