Answer:
The answer is "True".
Explanation:
The key to a relational database that is unique for each data record is a primary key, also called a primary keyword.This unique identifier, including a driver's license name, telephone number, or vehicle identification number. This is an identifier (VIN).There must always be the only primary key in such a relational database.This is a specific relational database field (or column combination) that identifies each table entry in a unique way.It utilized it to swiftly analyze the data within the table as a unique identifier.A hierarchy chart can be helpful for a. planning the functions of a program b. naming the functions of a program c. showing how the functions of a program relate to each other d. all of the above e. a and c only
Answer:
Hence the correct options are option B and option C.
Explanation:
Hierarchy Chart means top to bottom structure 0f a function or a program or an organization.
Planning the functions of a program means deciding beforehand that what are the functions of a program and what to try to do and when to try to, hierarchy Charts are often helpful In doing/knowing this all.
Showing how the functions of a program relate to every other means what's the connection between two functions for instance if we have a hierarchical chart of a corporation member then we'll have the connection among the members of the team i.e., first, we'll have CEO, then Manager then team/ project lead then team members and by using hierarchical chart ready to " we will be able to identify the connection among them. during a similar way, we will have a relationship among the functions of a program using the hierarchical chart.
Chất xơ có nhiều trong thực phẩm nào?
Answer:
Quả lê Quả lê là một loại trái cây phổ biến vừa ngon vừa bổ dưỡng. ...
Quả dâu tây. Dâu tây là loại quả cực kỳ ngon. ...
Quả bơ Quả bơ khác hơn so với hầu hết các loại trái cây. ...
Quả táo. ...
Quả mâm xôi. ...
Quả chuối. ...
Cà rốt. ...
Củ cải đường.
At the Greene City Interiors branch office, you have been asked to implement an IP network. Your network ID is currently192.168.1.0/24. You need to divide this in half network (two subnets) to accommodate hosts on two separate floors of the building, each of which is served by managed switches. The whole network is served by a single router.
Based on the above scenario, answer the following questions:
1. To divide the network in half, what subnet mask do you need to use?
2. What are the subnet IDs for each network?
3. Your manager is not satisfied with the new subnet scheme and wants to reduce the number of subnets to make more hosts and addresses available in each subnet. Is there a way to use the same subnet for the two floors of the office?
Answer:
3 is your correct answer
how to not addUse methods to: 1. Get a String from the user at the command line 2. Populate an ArrayList of Character data (the wrapper class), with each char in the String represented as a separate Character element in the ArrayList 3. Output each Character to the command line, each on a separate line space into my array list
Answer:
Explanation:
The following code is written in Java. It asks the user to enter a string. Then the program loops through the string and separates the string into an ArrayList of characters. Finally, it outputs each character separately on a its own line.
import java.util.ArrayList;
import java.util.Scanner;
class Brainly {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.println("Enter a String: ");
String answer = in.nextLine();
ArrayList<Character> charsList = new ArrayList<>();
for (int i = 0; i < answer.length(); i++) {
charsList.add(answer.charAt(i));
}
for (char x: charsList) {
System.out.println(x);
}
}
}
different types of computer and state the major difference between them
Answer:
computers system may be classified according to their size.
four types of computers are;
microcomputers / personal computers- micro computers are also called personal computers which is PC this computer came in different shapes size and colors. a personal computers are designed to be used by one person at a time.some examples of the computer are;
laptopdesktopa palmtopa work station2. mini computers- mini computers are sometimes called mid-range computers which are more powerful than microcomputers and can support a number of users performing different tasks, they were originally developed to perform specific tasks such as engineering calculations.
3. Mainframe computers- Mainframe computers are larger systems that can handle numberous users, store large amounts of data and process transaction at a high rate. these computers are expensive and powerful.
4. super computers- super computers are the most largest, fastest and most powerful computer. this systems are able to process hundreds of million of instructions per second they are used for job requiring and long complex calculation.
Genevieve is a student who attends classes at a campus downtown. She likes to study in the college's coffee shop, where she often accesses the Internet through the college's wireless network. Which network type is Genevieve using
Answer:
I'll let you make an educated guess off of this info! You always retain info better making an inference on a subject that you are having trouble with!
Explanation:
There are four types of wireless networks -- wireless local area networks, wireless metropolitan area networks, wireless personal area networks and wireless wide area networks -- each with its own function.
wireless local area networkA wireless local area network (WLAN) is a wireless distribution method for two or more devices. WLANs use high-frequency radio waves and often include an access point to the Internet. A WLAN allows users to move around the coverage area, often a home or small office, while maintaining a network connection.
wireless metropolitan area networkA metropolitan area network (MAN) is a computer network that connects computers within a metropolitan area, which could be a single large city, multiple cities and towns, or any given large area with multiple buildings. A MAN is larger than a local area network (LAN) but smaller than a wide area network (WAN).
wireless personal area networkA PAN provides data transmission among devices such as computers, smartphones, tablets and personal digital assistants. PANs can be used for communication among the personal devices themselves, or for connecting to a higher level network and the Internet where one master device takes up the role as gateway.
wireless wide area networkWireless wide area network (WWAN), is a form of wireless network. ... WWAN connectivity allows a user with a laptop and a WWAN card to surf the web, check email, or connect to a virtual private network (VPN) from anywhere within the regional boundaries of cellular service.
I hope this helped!!
shania
The network type Genevieve uses is a wireless local area network.
What is a wireless local area network?
A wireless local area network (WLAN) exists as a wireless distribution procedure for two or more devices. WLANs utilize high-frequency radio waves and often contain an access issue to the Internet. A WLAN permits users to move around the coverage area, often a house or small office, while preserving a network connection.
Therefore, the correct answer is option (a) LAN.
Complete questions:
Genevieve is a student who attends classes at a campus downtown. She likes to study in the college's coffee shop, where she often accesses the Internet through the college's wireless network. Which network type is Genevieve using
(a) LAN
(b) MAN
(c) PAN
(d) WAN
To learn more about wireless local area networks refer to:
https://brainly.com/question/8985345
#SPJ2
what are the draw backs of the third generation computer
Answer:
They are quite expensiveThey have the disadvantage of requiring cooling for their mainframe computers integral components cannot be repaired once damagedintegrated components require advanced knowledge to serviceThe trackpad/touchpad on my laptop is acting unusual. When I click on something or move to an area, it jumps or moves to another area. What would be a good troubleshooting step to try and resolve this issue?
a. Use a mouse instead
b. Remove all possible contact points, and test again while ensuring only a single contact point
c. Refer caller to user guides
d. increase the brightness of the display
Answer:
My best answer would be, "b. Remove all possible contact points, and test again while ensuring only a single contact point"
This is because usually when the cursor jumps around without reason, it's caused by the user accidentally hitting the mouse touchpad on his or her laptop while typing. ... Similarly, know that just because you have an external mouse attached to your laptop, the built-in mousepad is not automatically disabled.
Brainliest?
Write a program to print all odd numbers between 20 and 50(Qbasic)
how do you format a cd or a DVD
As the first step, load the dataset from airline-safety.csv by defining the load_data function below. Have this function return the following (in order):
1. The entire data frame
2. Total number of rows
3. Total number of columns
def load_data():
# YOUR CODE HERE
df, num_rows, num_cols
Answer:
import pandas as pd
def load_data():
df = pd.read_csv("airline-safety.csv')
num_rows = df.shape[0]
num_cols = df.shape[1]
return df, num_rows, num_cols
Explanation:
Using the pandas python package.
We import the package using the import keyword as pd and we call the pandas methods using the dot(.) notation
pd.read_csv reads the csv data into df variable.
To access the shape of the data which is returned as an array in the format[number of rows, number of columns]
That is ; a data frame with a shape value of [10, 10] has 10 rows and 10 columns.
To access the value of arrays we use square brackets. With values starting with an index of 0 and so on.
The row value is assigned to the variable num_rows and column value assigned to num_cols
Consider the relational schema below: Students(sid: integer, sname: string, major: string) Courses(cid: integer, cname: string, hours: integer) Enrollment(sid: integer, cid: integer, grade: real) Write a relational algebra expression that satisfies this query? Find the distinct names of all students that take at least three courses and major in "Philosophy".
Solution :
Here, we need to perform JOIN operation of the students and registration.
Use NATURAL JOIN operator [tex]\Join[/tex] and so no need to specify Join condition.
Also we need to selection operator tp select only those course whose major in "philosophy".
Finally we projection operator π to project only distinct students name who took at least three courses.
[tex]$\pi [\sigma_{\text{student's nam}e} [ \sigma(\text{three courses}) \Join \text{"Philosophy"}]]$[/tex]
list two ways to insert a chart in powerpoint
Answer:
1st way: On the Insert tab, in the Illustrations group, click Chart. In the Insert Chart dialog box, click a chart, and then click OK.
2nd way: Click INSERT > Chart. Click the chart type and then double-click the chart you want.
How does a computer work? Explain with an example.
Answer:
A computer system works by combining input, storage space, processing, and output. ... For example, when we type something using a keyboard, it is known as an Input provided to the Computer. Storage Space: It is the place where our input gets stored. It is known as Computer Memory that keeps the data into it.
Which option is used in order to configure switchboards for a complex database?
Switchboard Manager
Global Options
Quick Search
Database Formatter
worth 100 points
Answer:
switch board manager
Explanation:
Write a program named lastname_firstname_cities.py that works with information about large cities. Your program will open the cities.txt downloadfile. Each line in the file has the name of a city, its country, and its population. The first few lines of the file look like this:
Answer and Explanation:
Open your text editor and open new file. Save new file file as lastname_firstname_cities.py. The program will open the file cities.txt downloadfile hence :
dfile= open(cities.txt, "r")
If we write this into our lastname_firstname_cities.py file it will open our cities.txt downloadfile in read mode and text mode(by default unless we specify binary mode which is for images)
give one advantage of saving file in the same folder
Answer:
it's easier to find
Explanation:
things are much more organized
Write the code for the following problem.
Add a function to problem to display the last name and highest, last name and lowest and average exam score. Hint: for highest initialize a variable to 0 (high_var). If the array value is higher than the high_var then set high_var to the array value and set high_index to the position of the array. Proceed through the array until you get to the end. Do the same for finding the lowest using low_var set to 999 (higher than the highest value). For the average score, sum all the exam scores as you proceed through the loop. Use a for loop to go through each occurrence of the arrays. Note you can do all this with one for loop but if it makes more sense to you to use multiple for loops that is ok too.
Answer:
no
Explanation:
Hi ! How can you return the value of the class computeDiscountInfo to the variable savings in the main class ?
Here is my code :
import java.util.Scanner;
public class RoomCost{
public static void main (String [] args){
double price;
double discount;
double savings;
Scanner keyboard = new Scanner(System.in);
System.out.print("Enter cutoff price for discount $>> ");
price = keyboard.nextDouble();
System.out.print("Enter discount rate as a whole number >> ");
discount = keyboard.nextDouble();
displayinfo();
//insert code to set the value returned from computeDiscountInfo method to savings);
// savings =
System.out.println("Special this week on any room over " + price);
System.out.println("Discount of " + discount + " percent");
System.out.println("That's a savings of at least $" + savings);
}
public static void displayinfo(){
System.out.println("We want your stay to be memorable.");
System.out.println("We promise to make you as comfortable as possible.");
}
public static double computeDiscountInfo(double price, double discountRate)
{
double savings;
//(insert code to calculate savings as price multiplied by discount divided by 100);
savings = (price * discountRate)/100;
return savings;
}
}
Answer:
savings = computeDiscountInfo(price, discount);
Explanation:
First of all computeDiscountInfo is a function, not a class.
You can call this function and assign its return value to a variable, savings in this example.
Develop Swimlane Activity diagram for Assignment announcement and submission system.
The steps to this question can be defined as follows:
For step 1:
The task is to decide the action steps depending upon your use case.For step 2: Identify all parties involved
If you know whoever the actors are, it's easier to determine the acts they are liable for.For step 3: Establish a movement among activities
Change the priority in which the action is required by studying the flowchart. If you need to add any branches to the graph, note the conditions that must be met for certain processes to take place. Furthermore, do you even have to finish some tasks before moving onto someone else?For step 4: Adding swimlanes
We know who is to blame for each act. It's time to assign everyone a swimming lane and group every action they are accountable for under it.Some many activities and actions make up your sales system or process.Please find the diagram in the attachment file.
Learn more:
Assignment submission: brainly.com/question/11714037
Write a program that accepts the lengths of three sides of a triangle as an input from the user: A, B, C
Validate the user input so that the user can only enter positive values for sides A, B, C. All three must be true:
A > 0
B > 0
C > 0
Answer:
The program in Python is as follows:
A = int(input("A: "))
B = int(input("B: "))
C = int(input("C: "))
while A<=0 or B <= 0 or C <= 0:
A = int(input("A: "))
B = int(input("B: "))
C = int(input("C: "))
print("Valid inputs")
Explanation:
Get input for A, B and C
A = int(input("A: "))
B = int(input("B: "))
C = int(input("C: "))
The loop is repeated until inputs for A, B and C are above 0
while A<=0 or B <= 0 or C <= 0:
Get input for A, B and C
A = int(input("A: "))
B = int(input("B: "))
C = int(input("C: "))
Print valid inputs when user inputs are correct
print("Valid inputs")
How can a DevOps team take advantage of Artificial Intelligence (AI)?
Answer:
By using AI to collate data from multiple sources and assess existing automation to improve efficiency.
Artificial Intelligence is indeed a technique that allows machines to imitate the conduct of people. Machine Learning, even so, is an AI subset.
AI/ML could indeed help the creativity and innovation of DevOps team members by eradicating inefficient information. By their operations and maintenance life cycle and allowing the staff to collaborate on the quantity, speed, and variability of data. It could lead to automated improvements as well as improved productivity for the DevOps team.Therefore, By using AI, data from various sources is gathered and established automation is assessed to make it more efficient.
Learn more:
brainly.com/question/10054757
Which statement is most likely to be true about a computer network?
A network can have several client computers and only one server.
A network has to have physical cables connecting the devices in the network.
A network can have several servers and only one client.
A network can consist of a single computer with no other devices in communication with that computer.
Which statement is most likely to be true about a computer network?
A network can have several client computers and only one server.
Explanation:
a network can have several client computers and only one server
Give three reasons to use a hard drive as mass storage.
Answer:
With that in mind, let's take a look at five places where hard drives shine.
Backups and Archives. ...
Media Libraries. ...
Large Capacity Storage. ...
NAS Drives and Security. ...
RAID Arrays. ...
Other Uses.
AWS's EC2 is primarily considered which type? OA OB. Maas O Claas O D. None of the above O E. Serverless
Answer:
IaaS (Infrastructure as a Service)
"Amazon takes the responsibility of networking, storage, server and virtualization and the user is responsible for managing the Operating System, middleware, runtime, data and application."
Which of the following are examples of third party software that banks use? (Select all that apply.)
A -compliance reporting
B -unencrypted Microsoft Suite
C -accounting software
D -customer relationship management
Answer:
c , it is a correct answer for the question
True or False.
Figuring out the learning styles of your instructors will help you better understand how they prefer to teach.
You are the network administrator for the ABC Company. Your network consists of two DNS servers named DNS1 and DNS2. The users who are configured to use DNS2 complain because they are unable to connect to internet websites. The following shows the configuration of both servers:
Server Configurations:
DNS1: _msdcs.abc.comabc.com
DNS2: .(root)_msdcs.abc.comabc.com
The users connected to DNS2 need to be able to access the internet. What should be done?
Answer:
ABC Company
The action to take is to:
Delete the .(root) zone from the DNS2. Then configure conditional forwarding on the DNS2 server. If this is not done, the users will be unable to access the internet.
Explanation:
DNS forwarding enables DNS queries to be forwarded to a designated server, say DNS2, for resolution according to the DNS domain name. This stops the initial server, DNS1, that was contacted by the client from handling the query, thereby improving the network's performance and resilience and enabling the users to be connected to the DNS2 in order to access the internet.
Explain how data structures and algorithms
are useful to the use of computers in
data management (10 marks)
Explain how data structure and uses of computer in data management
Answer:
Data management is a important tool for data handling.
Explanation:
A good knowledge about the data stricture and data management is a prerequisite for working with codes and algorithms. It helps to identify the techniques for designing the algorithms and data storage in the system. It helps to find out the data hierarchy. Thereby allowing the data management in an efficient and effective way. It can increase the skills in computer programminga. Download the attached �Greetings.java� file.
b. Implement the �getGreetings� method, so that the code prompts the user to enter the first name, the last name, and year of birth, then it returns a greetings message in proper format (see the example below). The �main� method will then print it out. Here is an example dialogue with the user:
Please enter your first name: tom
Please enter your last name: cruise
Please enter your year of birth: 1962
Greetings, T. Cruise! You are about 50 years old.
Note that the greetings message need to be in the exact format as shown above (for example, use the initial of the first name and the first letter of the last name with capitalization).
c. Submit the final �Greetings.java� file (DO NOT change the file name) online.
Answer:
Code:
import java.util.*;
public class Greetings
{
public static void main(String[] args)
{
Scanner s = new Scanner(System.in);
System.out.println(getGreetings(s));
}
private static String getGreetings(Scanner console)
{
System.out.print("Please enter your first name: ");
String firstName=console.next();
char firstChar=firstName.toUpperCase().charAt(0);
System.out.print("Please enter your last name: ");
String lastName=console.next();
lastName=lastName.toUpperCase().charAt(0)+lastName.substring(1, lastName.length());
System.out.print("Please enter your year of birth: ");
int year=console.nextInt();
int age=getCurrentYear()-year;
return "Greetings, "+firstChar+". "+lastName+"! You are about "+age+" years old.";
}
private static int getCurrentYear()
{
return Calendar.getInstance().get(Calendar.YEAR);
}
}
Output:-
