For each of the descriptions below, perform the following tasks:

i. Identify the degree and cardinalities of the relationship.
ii. Express the relationships in each description graphically with an E-R diagram.

a. A book is identified by its ISBN number, and it has a title, a price, and a date of publication. It is published by a publisher, which has its own ID number and a name. Each book has exactly one publisher, but one publisher typically publishes multiple books over time.
b. A book is written by one or multiple authors. Each author is identified by an author number and has a name and date of birth. Each author has either one or multiple books; in addition, occasionally data are needed regarding prospective authors who have not yet published any books.
c. In the context specified in 2a and 2b, better information is needed regarding the relationship between a book and its authors. Specifically, it is important to record the percentage of the royalties that belongs to a specific author, whether or not a specific author is a lead author of the book, and each author's position in the sequence of the book's authors.
d. A book can be part of a series, which is also identified as a book and has its own ISBN number. One book can belong to several sets, and a set consists of at least one but potentially many books.
e. A piano manufacturer wants to keep track of all the pianos it makes individually. Each piano has an identifying serial number and a manufacturing completion date. Each instrument represents exactly one piano model, all of which have an identification number and a name. In addition, the company wants to maintain information about the designer of the model. Overtime, the company often manufactures thousands of pianos of a certain model, and the model design is specified before any single piano exists.
f. A piano manufacturer (see 2e) employs piano technicians who are responsible for inspecting the instruments before they are shipped to the customers. Each piano is inspected by at least two technicians (identified by their employee number). For each separate inspection, the company needs to record its date and a quality evaluation grade.
g. The piano technicians (see 2f) have a hierarchy of reporting relationships: Some of them have supervisory
responsibilities in addition to their inspection role and have multiple other technicians report to them. The supervisors themselves report to the chief technician of the company.
h. A vendor builds multiple types of tablet computers. Each has a type identification number and a name. The key
specifications for each type include amount of storage space and display type. The company uses multiple processor types, exactly one of which is used for a specific tablet computer type; obviously, the same processor can be used in multiple types of tablets. Each processor has a manufacturer and a manufacturer's unique code that identifies it.
i. Each individual tablet computer manufactured by the vendor (see 2h) is identified by the type identification number and a serial number that is unique within the type identification. The vendor wants to maintain information about when each tablet is shipped to a customer.
j. Each of the tablet computer types (see 2h) has a specific operating system. Each technician the company employs is certified to assemble a specific tablet type—operating system combination. The validity of a certification starts on the day the employee passes a certification examination for the combination, and the certification is valid for a specific period of time that varies depending on tablet type—operating system combination.

Explanation:

Evaluating the solution is the last step of the problem solving process.

Answer:

Lack of segregation of duties

Explanation:

Internal Controls are set of rules and guidelines that are followed to ensure effectiveness of business operations. The main risk in the business is weak internal controls. There are some organizations with strong internal controls but implementation of such controls is a challenge for organizations. There are human errors, IT security risks, fraud and compliance risk.

The risks associated with Olive limited is that there is no segregation of duties, Richard Palm is preparing journal vouchers, posts the journal vouchers and reconciles the balance himself. If he makes an error in recording a transaction there is no one who reviews his work and can identify an error. Also if Richard is involved in a fraud and collaborates with purchase department or sales department staff, he can pass a transaction without any supervision.

Answer:

year = int(input("Enter a year: "))

if year >= 2101:

   print("Distant future")

elif year >= 2001:

   print("21st century")

elif year >= 1901:

   print("20th century")

else:

   print("Long ago")

Explanation:

*The code is in Python.

Ask the user to enter a year

Use if-else statement to check the year and print the appropriate message given for each condition. If year is greater than or equal to 2101, print "Distant future". If year is greater than or equal to 2001, print "21st century". If year is greater than or equal to 1901, print "20th century". Otherwise, print "Long ago".

Answer:

The program goes as follows

Comments are used to explain difficult lines

#include <iostream>

#include <string>

using namespace std;

int main()

{

string userinput;

getline(cin,userinput);

/* My Solution starts here*/

//Initialize sub string position to 0

int stringpos = 0;

// Declare an iterating variable to iterate through userinput

int startpos;  

//Declare and initialize a determinant variable

int k = 0;

while((startpos = userinput.find("darn",stringpos))!=string::npos)

{

 //If userinput contaings "darn", increase k by 1

k++;

// Go to next string position

stringpos = startpos+1;  

}

//If determinant variable k is p then, userinput does not contain "darn"

if(k==0)

{

 cout<<userinput;

}

//Otherwise, it contains "darn"

else

{

 cout<<"Censored";

}

/* My Solution ends here*/

return 0;

}

See attached for .cpp program file

Answer:

The answer is d, because it is not reliable in the sense that it can be used for important and sensitive information when your collecting data.

Answer:

cout << setprecision(2)<< fixed << number;

Explanation:

The above statement returns 12.35 as output

Though, the statement can be split to multiple statements; but the question requires the use of a cout statement.

The statement starts by setting precision to 2 using setprecision(2)

This is immediately followed by the fixed manipulator;

The essence of the fixed manipulator is to ensure that the number returns 2 digits after the decimal point;

Using only setprecision(2) in the cout statement will on return the 2 digits (12) before the decimal point.

The fixed manipulator is then followed by the variable to be printed.

See code snippet below

#include <iostream>  

#include <iomanip>

using namespace std;  

int main()  

{  

// Initializing the double value

double number = 12.3456;  

//Print  result

cout << setprecision(2)<< fixed << number;  

return 0;  

}  

Answer:

This is createing a responsive website form for clients.

Explanation:

Using HTML, CSS and JavaScript or python to create an interactive, dynamic website. The html file is used to structure the layout of the website Dom , the CSS, also known as cascaded style sheet is using to style the created web pages. The CSS libraries and frameworks like sass, less and bootstraps can be used for convenience and speed. The JavaScript file is used to manipulate the Dom, creating an interactive site. Python libraries likes flask are used for backend development routing to create dynamic contents and web pages.

Answer:

A java program was used to run a simple math quiz. the program was used to generate two random integers between 1 and 20 and then ask a series of math questions

Explanation:

Solution

THE CODE:

import java.util.Random;

import java.util.Scanner;

public class LabQuiz {

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

System.out.println("****Welcome to Quiz******");

System.out.print("Enter your name: ");

String name = in.next();

System.out.println("Welcome "+name+"! Please answer the following questions:");

int scoreCounter=0;

int a;

int b;

int response;

a=getRandomNum();

b=getRandomNum();

System.out.print(a+"+"+b+"=");

response = in.nextInt();

if(response==(a+b)){

scoreCounter++;

System.out.println("That is correct");  

}  

else

System.out.println("No, thats not the right answer, its::"+(a+b));

a=getRandomNum();

b=getRandomNum();

System.out.print(a+"*"+b+"=");

response = in.nextInt();

if(response==(a*b)){

scoreCounter++;

System.out.println("That is correct");  

}  

else  

System.out.println("No, thats not the right answer, its::"+(a*b));

a=getRandomNum();

b=getRandomNum();

System.out.print(a+"/"+b+"=");

response = in.nextInt();

if(response==(a/b)){

scoreCounter++;

System.out.println("That is correct");

}

else

System.out.println("No, thats not the right answer, its::"+(a/b));

a=getRandomNum();

b=getRandomNum();

System.out.print(a+"%"+b+"=");

response = in.nextInt();

if(response==(a%b)){

scoreCounter++;

System.out.println("That is correct");  

}

else

System.out.println("No, thats not the right answer, its::"+(a*b));

System.out.println("You got "+scoreCounter+" correct answers.");

System.out.println("Thats "+(scoreCounter*25)+"%");

in.close();  

}

static int getRandomNum(){

Random rand = new Random();

int a;  

a = rand.nextInt(20);

if(a==0)

a++;  

return a;  

}  

}

Answer:

Webcast

Explanation:

Webcast is the live broadcast of a video or audio feed from your event or conference harnessing the internet. Webcast is a media presentation of an event circulated over the internet by using media technology to distribute a single source to various viewers.

Generally,  webcast is briefly defined as broadcasting over the internet. The broadcast might not be specifically live  . One can capture the video or the audio he or she wants to publish and publish it online anywhere. Webcast allow your viewers to remain engage as if they are face to face with the broadcaster.

Webcasting is a a great tools that has been used by various multinational and company to reach wide range of audience . This web based broadcast can even provide opportunity for audience to ask question and even provide answers in real time.

Answer:

Webcast.

Explanation:

A Webcast is a form of Web conferencing that uses streaming media technologies to broadcast video and/or audio over the Internet from a single content source to many listeners or viewers simultaneously.

The Webcast is an internet conferencing tool that transmits and stores, corporate presentations, lectures, workshops, seminars, etc., with the advantage of being a simple operation tool that can bring together groups in real time offering dynamism and reducing geographical distance.

It is a widely used and useful tool for companies, as it can help when traditional communication channels are not sufficient to deal with extremely relevant issues for the company, such as training and presentation of materials for prospecting customers.

The Webcast is an advantageous technology for companies by reducing personnel displacement and reducing costs with facilities, infrastructure and space rental.

Answer:

Top Secret, (A,B,C)

Explanation:

Solution:

Some information are known to be sensitive, and has a higher level of classification.

Examples for such levels are: Secret, Top secret ,Unclassified and  Confidential, and Unclassified.  all users of the system has a  level of clearance. fro a user to be able to gain access to document, he or she must have posses a level of the document.

Now, this is governed by two rules which is stated below:

No user can have access to any information that is considered higher than their level of clearance.

Secondly, a user can write to files only that contains an equal level or lower of his clearance level, this is to stop what is called the write down effect.

It is important to note that ABC, categories determine what type of access is permitted.

Now, for the given example, since, Bob and charlie cannot read it, which shows that the file must be of top priority or importance, then Bob and Charlie needs clearance to the file,the file 2 is considered a top priority.

Therefore, the File 2 is classified as a Top Secret, (A,B,C)

Answer:

Red=R, Yellow=Y, Blue=B, Orange=O, Green=G, Purple=P

Explanation:

Colors of chemical is a physical property which comes from excitation of electrons. The electrons absorbs energy which enables the chemical to change its color. The correct sequence to create cure is to use red, yellow and blue then add gradually the other colored chemicals.

Answer:The users would likely know if an upgrade would be necessary or even useful.

First hand user information is often ignored by developers, change managers etc. However, obtaining first hand user input has proven vastly cost effective ,productive and easier to apply . By having early input the actual working interface can be designed so that daily users find it works effectively for them and others they interact with. It can also allow users to effectively aim to break the functionality before a crisis occurs etc. Furthermore by having user input the users will make a greater effort in ensuring the upgrade works seamlessly.

Explanation:

Answer:

C

Explanation:

Answer:

A secure password has the following characteristics:

Phishing is a kind of social engineering where a cyber criminals  trying to trick the victims to get benefit from them. For example, a cyber criminal can send a phishing email to tell the victims about something wrong with their credit card or bank account and provide a malicious link and persuade the victim to access their fake website that resembles an official bank website.  From there, the victims can send credential info to the cyber criminals without their awareness. Phishing can also be done through phone call. Phishing is harmful as a victim can fall into the trap of disclosing highly critical credential info that incur a huge loss of money.

Answer:

weight = float(input("Enter your weight in pounds: "))

height = float(input("Enter your height in inches: "))

weight = weight * 0.45359237

height = height * 0.0254

bmi = weight / (height * height)

print("Your BMI is: %.4f" % bmi)

Explanation:

*The code is written in Python.

Ask the user to enter weight in pounds and height in inches

Convert the weight into kilograms and height into meters using given conversion rates

Calculate the BMI using given formula

Print the BMI

Answer:

Nothing just the video is series of photos together

Explanation:

Answer:

Following are code that we fill in the given in the given question

if i %2==0:# check the condition

new_list.append(elements[i])# append the list  

return new_list # return the new_list

Explanation:

Missing Information :

def skip_elements(elements):# function

new_list=[]# Declared the new list

i=0  #variable declaration

for i in range(len(elements)): #iterating over the loop  

if ---------# filtering out even places elements in the list

--------------# appending the list

return -------- # returning the new_list

print(skip_elements(['a','b','c','d','e','f','g'])) #display

Following are the description of the code:

Answer:

The odds for the event that either Romance or Downhill wins is 11/4

Explanation:

The odds that Romance will win is 2: 3

The odds that Downhill will win is 1:2

[tex]P(event) = \frac{Odd(event)}{1 + Odd(event)}[/tex]

Where P(event) = Probability that an event occurs

Odd(event) = The odds that an event occurs

Calculate the Probability that Romance wins, P(R):

[tex]P(R) = \frac{2/3}{2/3 + 1} \\P(R) = 2/5[/tex]

Calculate the probability that Downhill wins, P(D):

[tex]P(D) = \frac{1/2}{1/2 + 1} \\P(D) = 1/3[/tex]

Calculate the Probability that either Romance or Downhill wins, P(R or D):

P(R or D) = P(R) + P(D)

P(R or D) = 2/5 + 1/3

P(R or D) = 11/15

[tex]P(R or D) = \frac{Odd(R or D)}{1 + Odd(R or D)} \\\\11/15 = \frac{Odd(R or D)}{1 + Odd(R or D)}\\[/tex]

[tex]\frac{11}{15} + \frac{11}{15}[ Odd(R or D)] = Odd(R or D)\\\\\frac{4}{15}[ Odd(R or D)] = \frac{11}{15}\\\\\\Odd(R or D) = \frac{11}{15} * \frac{15}{4}\\\\Odd(R or D) = 11/4[/tex]

Answer:

yoooooooooooooooooooooooo

Explanation:

lrmgkrmbm mrm g

Answer: provided in the explanation section

Explanation:

 Network’s vulnerabilities:

           Vulnerability is a weak spot in your network that might be exploited by a security threat. Risks are the potential consequences and impacts of unaddressed vulnerabilities. In other words, failing to do Windows Updates on your Web server is vulnerability.

           Regularly scheduled network vulnerability scanning can help an organization identify weaknesses in their network security before the bad guys can mount an attack. The goal of running a vulnerability scanner or conducting an external vulnerability assessments is to identify devices on your network that are open to known vulnerabilities without actually compromising your systems.

           The overall objective of a Vulnerability Assessment is to scan, investigate, analyze and report on the level of risk associated with any security vulnerabilities discovered on the public, internet-facing devices and to provide your organization with appropriate mitigation strategies to address those discovered vulnerabilities.

Network topology issues:

Coverage Topology

           Coverage problem reflects how well an area is monitored or tracked. The coverage and connectivity problems in networks have received considerable attention in the research community in recent years

Geographic routing

           Geographic routing uses geographic and topological information of the network to achieve optimal routing schemes with high routing efficiency and low power consumption

Port Numbers

           Port Numbers While IP addresses determine the physical endpoints of a network connection, port numbers determine the logical endpoints of the connection. Port numbers are 16-bit integers with a useful range from 1 to 65535.

Port numbers are assigned by an organization called IANA and ports are allocated to various needs to avoid confusion.

Ports are classified into 3 main categories.

Well Known Ports (Port numbers 0 - 1023)

           In a client-server application, the server usually provides its service on a well-known port number. Well-known port numbers are a subset of the numbers which are assigned to applications. According to RFC1700 [5], well-known port numbers are managed by the Internet Assigned Numbers Authority (IANA). They used to be in the range from 1 to 255, but in 1992 the range was increased up to 1023.

Registered Ports (Port numbers1024 - 49151)

Such ports are used by programs run by users in the system.

           In addition to the well-known ports below 1024 there are more port numbers assigned to applications but are located anywhere from 1024 to 65535.

Private or Dynamic Ports (Port numbers 49152 - 65535)

           Private ports are not assigned for any specific purpose.

Discuss the concepts of well-known ports and give a brief description of the most commonly used ports: 20, 21, 23, 25, 53, and 110.

Commonly Used Port Numbers

The following port numbers are unofficial list of commonly used for linux/unix based servers.

20&21               TCP                FTP (File server protocol)

           FTP is one of the most commonly used file transfer protocols on the Internet and within private networks. An FTP server can easily be set up with little networking knowledge and provides the ability to easily relocate files from one system to another. FTP control is handled on TCP port 21 and its data transfer can use TCP port 20 as well as dynamic ports depending on the specific configuration.

23                   TCP/UDP          Telnet

           Telnet is the primary method used to manage network devices at the command level. Unlike SSH which provides a secure connection, Telnet does not, it simply provides a basic unsecured connection. Many lower level network devices support Telnet and not SSH as it required some additional processing. Caution should be used when connecting to a device using Telnet over a public network as the login credentials will be transmitted in the clear.

25                   TCP/UDP         SMTP   (for sending outgoing emails)

           SMTP is used for two primary functions, it is used to transfer mail (email) from source to destination between mail servers and it is used by end users to send email to a mail system.

53         TCP/UDP        DNS Server (Domain name service for DNS request)

           The DNS is used widely on the public internet and on private networks to translate domain names into IP addresses, typically for network routing. DNS is hieratical with main root servers that contain databases that list the managers of high level Top Level Domains (TLD) (such as .com). T

110             TCP                 POP3 (For receiving emails)

           POP version 3 is one of the two main protocols used to retrieve mail from a server. POP was designed to be very simple by allowing a client to retrieve the complete contents of a server mailbox and then deleting the contents from the server.

Answer:

  generate a random number in a known range and map the result to the range you want

Explanation:

Use any of the usual methods to get a random number in the range 0-20, then subtract 9. Use an IF statement to test if the result is 0. If it is, replace the value with -10.

Answer:

Software? or a person?

Answer:

import math

n = int(input("Enter the number of sides: "))

s = float(input("Enter the length of a side: "))

area = (n * s**2) / (4 * math.tan(math.pi/n))

print("The area is: " + str(area))

Explanation:

*The code is in Python.

Import the math to be able to compute the pi and tan

Ask the user to enter the number of sides and the length of a side

Calculate the area using the given formula

Print the area

The correct format for the output this tree is shown below:

(1) Output this tree

    ×

  ×××

×××××

×××××××

  ×××

(2) The correct format for the Below the tree is shown below:

Below the tree (with two blank lines), output this cat. (3 pts)

  / \        / \

     o     o

 =           =

   -   -   -

Answer:

Explanation:

We are given an Hint that:

A backslash \ in a string acts as an escape character, such as with a newline \n. So, to print an actual backslash, escape that backslash by prepending another backslash.

An Example : The following prints a single backslash: System.out.println("\\");

The main objective here is to use a Java code to interpret the above  (1) Output this tree and  (2) Below the tree.

So Using a Java code to interpret the Program: ASCII art ; we have:

public class AsciiArt {

  public static void main(String[] args) {

      // TODO Auto-generated method stub

      //Draw Tree

    System.out.println(" *");

      System.out.println(" ***");

      System.out.println(" *****");

      System.out.println("*******");

      System.out.println(" ***");

      //output cat

      System.out.println();

      System.out.println("/\\\t/\\");

      System.out.println(" o o");

      System.out.println(" = =")

      System.out.println(" ---");

  }

OUTPUT:

SEE THE ATTACHED FILE BELOW.

The program is a sequential program, and does not require loops and conditional statements.

See attachment for the complete program written in Python, where comments are used as explanation

Read more about Python programs at:

https://brainly.com/question/16397886

Answer:

Storage devices tend to be built in/physical pieces of storage such as an SD Card or Hard Drive. Virtual storage is more-so like Cloud storage, where the files are hosted elsewhere.

Explanation:

Answer:

Following is the program in the C language

#include <stdio.h> // header file  

int main() // main function

{

float weight1[10]; // array declaration  

float sum=0,max1,t; // variable declaration

for(int k = 0; k < 5; k++) //iterating the loop

{

printf("Enter weight %d: ",k+1);

scanf("%f",&weight1[k]); // Read the array by user

}

printf("\n");

printf("You entered: ");

max1=weight1[0];

for(int k = 0; k < 5 ; k++)

{

sum=sum+weight1[k];

if(max1 < weight1[k]) // check condition for highest element

{

max1=weight1[k];

}

printf("%.2lf ",weight1[k]);

}

t=sum/5.0; // find average

printf("\nTotal weight: %.2lf\n",sum); // displat total

printf("Average weight: %.2lf\n",t); // display Average

printf("Max weight: %.2lf\n",max1); // display maximum value

return 0;

}

Output:

Enter weight 1: 1

Enter weight 2: 2

Enter weight 3:3

Enter weight 4:4

Enter weight 5: 5

You entered:  1.00  2.00  3.00  4.00  5.00

Total weight: 15.00

Average weight:  3.00

Max weight:  5.00

Explanation:

Following are description of program :

Answer:

A central processing unit (CPU) is an important part of every computer. The CPU sends signals to control the other parts of the computer, almost like how a brain controls a body. The CPU is an electronic machine that works on a list of computer things to do, called instructions. hope that helps love!

Answer:

I do Stray kids and Tower Of God is good combo mannnn

Answer:

Yes

Explanation:

I dont comprehend how this question requires any intellectual answer but it's ok.

Answer:

Physical / Data link layer

Explanation:

If two computers (A & B) are directly connected through Ethernet cable. A is sending data to B, the data would be transmitted if the network is clear but if the network is not clear, the transmission would wait until the network is clear.

The Open Systems Interconnection model (OSI model) has seven layers each with its own function.

The physical layer is the first layer responsible for data transmission over a physical link. The data packets are converted to signals over a transmission media like ethernet cable.

The data link layer is the second layer in the OSI layer responsible for transmission of data packets between nodes in a network. It also provides a way of detecting errors and correcting this errors produced as a result of data transmission.

Answer:

numbers = []

count = 0

while True:

   number = int(input("Enter a number: "))

   if number < 0:

       break

   else:

       numbers.append(number)

       count += 1

min_number = min(numbers)  

print(str(min_number) + " was the smallest among " + str(count) + " entered numbers.")

Explanation:

Initialize an empty array, to hold the entered numbers, and count as 0

Create a while loop that iterates until a specific condition is met

Inside the loop, ask the user to enter the numbers. When the user enters a negative number terminate the loop. Otherwise, add the entered number to the numbers array and increment the count by 1.

When the loop is done, find the smallest of the number in the numbers array using min method and assign it to the min_number.

Print the min_number and count