Learn more:
brainly.com/question/7342246
The Address Resolution Protocol ARP cache maintained by ARP keeps a record of IP addresses and their corresponding Media Access Control, MAC address
The correct response to what would happen if the wrong EtherAddr is
entered into the arp-s InetAddr EtherAddr command is that;
The system will not be able to connect to the IP address linked to the wrong Ethernet address.
The reason the above response is correct is as follows:
Characteristics of the ARP protocol;
The ARP protocol is a protocol that has a high level of control such that
the reply is trusted and can be used to redirect traffic through spoofing of
the responses to ARP which are then stored in the cache.
Functioning of the arp -s InetAddr EtherAddr command;
The command arp -s InetAddr EtherAddr command inputs a manual entry
into the ARP cache that works to assign the inputted IP address in InetAddr
to the MAC physical address in EtherAddr.
The ARP provides the translation from physical MAC addresses of Layer 2
to the IP address of Layer 3 by mapping the MAC address to the IP
address.
Solution:
What would happen if, when you manually added an entry, you entered the correct IP address, but the wrong Ethernet address for that remote interface is as follows;
When the wrong Ethernet address is entered in the arp -s command, the
IP-address is resolved as belonging to the wrong Ethernet or MAC
address, and if the address does not exist, it will not be possible to
connect to the correct or desired IP address.
Learn more about ARP here:
https://brainly.com/question/13068535
https://brainly.com/question/22696379
https://brainly.com/question/12975431
Define a function ComputeGasVolume that returns the volume of a gas given parameters pressure, temperature, and moles. Use the gas equation PV = nRT, where P is pressure in Pascals, V is volume in cubic meters, n is number of moles, R is the gas constant 8.3144621 ( J / (mol*K)), and T is temperature in Kelvin.Sample program:#include const double GAS_CONST = 8.3144621;int main(void) { double gasPressure = 0.0; double gasMoles = 0.0; double gasTemperature = 0.0; double gasVolume = 0.0; gasPressure = 100; gasMoles = 1 ; gasTemperature = 273; gasVolume = ComputeGasVolume(gasPressure, gasTemperature, gasMoles); printf("Gas volume: %lf m^3\n", gasVolume); return 0;}
Answer:
double ComputeGasVolume(double pressure, double temperature, double moles){
double volume = moles*GAS_CONST*temperature/pressure;
return volume;
}
Explanation:
You may insert this function just before your main function.
Create a function called ComputeGasVolume that takes three parameters, pressure, temperature, and moles
Using the given formula, PV = nRT, calculate the volume (V = nRT/P), and return it.
I have tried looking for this answer everywhere, and I could not find the answer
I have a Windows 10 Laptop, with a 12GB RAM Card, okay? I also have my 1TB Disk Partitioned so that I have 3 Disks. 2 of them are my primary, both of those are 450GB apiece. The last one ([tex]Z:[/tex]) I named "RAM" and set that one to 100GB.
How do I turn the drive [tex]Z:[/tex] into strictly RAM?
I already did the Virtual Memory part of it, but I was wondering if I can make it strictly RAM so the system uses drive [tex]Z:[/tex] before using the RAM disk? If it is not possible, I'm sorry.
If my computer has 4 gigabytes of ram memory then I have 4e+9 bytes of memory. I think-
Answer: That isn't a software problem, its a hardware problem. There is a difference between 12gb of ram versus 100 gb of HDD. Ram is temporary storage, you can not turn SSD or HDD storage into RAM. If you are a gamer, STEER AWAY FROM LAPTOPS, DO NOT BUY A GAMING LAPTOP. Either buy a DESKTOP (or build) or a console. They give more performance for the price and they are easily upgradable. Not many people can open up a laptop and put in more RAM because the hardware is incredibly small.
Write a program that create Employee class with fields id,name and sal and create Employee object and store data and display that data.
Answer:
Here is the C++ program for Employee class with fields id,name and sal.
#include <iostream> // to use input output functions
#include <string> //to manipulate and use strings
using namespace std; // to access objects like cin cout
class Employee { //class Employee
private:
/* the following data members are declared as private which means they can only be accessed by the functions within Employee class */
string name; //name field
int id; //id field
double sal; //salary field
public:
Employee(); // constructor that initializes an object when it is created
/* setName, setID and setSalary are the mutators which are the methods used to change data members. This means they set the values of a private fields i.e. name, id and sal */
void setName(string n) //mutator for name field
{ name = n; }
void setId(int i) //mutator for id field
{ id = i; }
void setSalary(double d) //mutator for sal field
{ sal = d; }
/* getName, getID and getSalary are the accessors which are the methods used to read data members. This means they get or access the values of a private fields i.e. name, id and sal */
string getName() //accessor for name field
{ return name; }
int getId() //accessor for id field
{ return id; }
double getSalary() //accessor for sal field
{ return sal; } };
Employee::Employee() { //default constructor where the fields are initialized
name = ""; // name field initialized
id = 0; // id field initialized to 0
sal = 0; } // sal field initialized to 0
void display(Employee);
// prototype of the method display() to display the data of Employee
int main() { //start of the main() function body
Employee emp; //creates an object emp of Employee class
/*set the name field to Abc Xyz which means set the value of Employee class name field to Abc Xyz through setName() method and object emp */
emp.setName("Abc Xyz");
/*set the id field to 1234 which means set the value of Employee class id field to 1234 through setId() method and object emp */
emp.setId(1234);
/*set the sal field to 1000 which means set the value of Employee class sal field to 1000 through setSalary() method and object emp */
emp.setSalary(1000);
display(emp); } //calls display() method to display the Employee data
void display(Employee e) { // this method displays the data in the Employee //class object passed as a parameter.
/*displays the name of the Employee . This name is read or accessed through accessor method getName() and object e of Employee class */
cout << "Name: " << e.getName() << endl;
/*displays the id of the Employee . This id is read or accessed by accessor method getId() and object e */
cout << "ID: " << e.getId() << endl;
/*displays the salary of the Employee . This sal field is read or accessed by accessor method getSalary() and object e */
cout << "Salary: " << e.getSalary() << endl; }
Explanation:
The program is well explained in the comments mentioned with each statement of the program.
The program has a class Employee which has private data members id, name and sal, a simple default constructor Employee(), mutatator methods setName, setId and setSalary to set the fields, acccessor method getName, getId and getSalary to get the fields values.
A function display( ) is used to display the Employee data i.e. name id and salary of Employee.
main() has an object emp of Employee class in order to use data fields and access functions defined in Employee class.
The output of the program is:
Name: Abc Xyz
ID: 1234
Salary: 1000
The program and its output are attached.
Write a program that displays the values in the list numbers in ascendingorder sorted by the sum of their digits.
Answer:
Here is the Python program.
def DigitList(number):
return sum(map(int, str(number)))
list = [18, 23, 35, 43, 51]
ascendList = sorted(list, key = DigitList)
print(ascendList)
Explanation:
The method DigitList() takes value of numbers of the list as parameter. So this parameter is basically the element of the list. return sum(map(int, str(number))) statement in the DigitList() method consists of three methods i.e. str(), map() and sum(). First the str() method converts each element of the list to string. Then the map() function is used which converts every element of list to another list. That list will now contain digits as its elements. In short each number is converted to the string by str() and then the digit characters of each string number is mapped to integers. Now these digits are passed to sum() function which returns the sum. For example we have two numbers 12 and 31 in the list so each digit is 1 2 and 3 1 are added to get the sum 3 and 4. So now the list would have 3 4 as elements.
Now list = [18, 23, 35, 43, 51] is a list of 5 numbers. ascendList = sorted(list, key = DigitList) statement has a sorted() method which takes two arguments i.e. the above list and a key which is equal to the DigitList which means that the list is sorted out using key=DigitList. DigitList simply converts each number of list to a another list with its digits as elements and then returns the sum of the digits. Now using DigitList method as key the element of the list = [18, 23, 35, 43, 51] are sorted using sorted() method. print(ascendList) statement prints the resultant list with values in the list in ascending order sorted by the sum of their digits.
So for the above list [18, 23, 35, 43, 51] the sum of each number is 9 ,5, 8, 7, 6 and then list is sorted according to the sum values in ascending order. So 5 is the smallest, then comes 6, 7, 8 and 9. So 5 is the sum of the number 23, 6 is the sum of 51, 7 is the sum of 43, 8 is the sum of 35 and 9 is the sum of 18. So now after sorting these numbers according to their sum the output list is:
[23, 51, 43, 35, 18]
Write a program that read two numbers from user input. Then, print the sum of those numbers.
Answer:
#This is in Python
number1 = raw_input("Enter a number: ")
number2 = raw_input("Enter another number: ")
sum = float(number1) + float(number2)
print(sum)
Explanation:
15. The primitive data types in JavaScript are:
Answer:
The three primitive data types in JavaScript are:
1. Numbers
2. Strings of text(known as "strings")
3. Boolean Truth Values (known as "booleans")
Modify the DemoSalesperson application so each Salesperson has a successive ID number from 111 through 120 and a sales value that ranges from $25,000 to $70,000, increasing by $5,000 for each successive Salesperson. Save the file as DemoSalesperson2.java.
Answer:
Here is the modified DemoSalesperson2
public class DemoSalesperson2{ // class DemoSalesperson2
public static void main(String[] args) { //start of main() function body
SalesPerson[] sp = new SalesPerson[10]; // creates an array of SalesPerson object named sp
int start_id =111; // assign 111 to starting id number
double start_sal=25000; //assign 25000 to starting salary means salary will start from amount 25000
for (int i =0; i<sp.length; i++) { //loop iterates until the value of loop variable i remains less then length of the array object sp
sp[i] =new SalesPerson(start_id+i,start_sal+5000*(i)); /*at each iteration ID number from 111 through 120 and a sales value that ranges from $25,000 to $70,000, increasing by $5,000 for each successive is displayed using object array sp[] which calls the SalesPerson constructor to access id and sales */
System.out.println(sp[i].getId()+" "+sp[i].getAnnualSales() ); } } } /*uses object sp of class SalesPerson to access the methods getId which returns the id and getAnnualSales method which returns the annual sales, to display id and annual sales */
Explanation:
The question first requires a SalesPerson class with these requisites:
Class name: Salesperson.
Data fields for Salesperson: int ID number , double annual sales amount.
Methods: constructor SalesPerson() that requires values for both data fields, as well as get and set methods for each of the data fields.
So according to the complete question's requirement, I have implemented SalesPerson class:
public class SalesPerson { // class name
//data members: integer type id variable and double type sales variable
private int id;
private double sales;
public SalesPerson(int id_no, double annual_sales) { //constructor that requires values for id and sales
id = id_no;
sales = annual_sales; }
public int getId() { //accessor getId() method to get or access the value of id data field
return id; }
public void setId(int id_no) { //mutator setId to set the value of id data field
id = id_no; }
public double getAnnualSales() { //accessor getAnnualSales() method to get or access the value of sales data field
return sales; }
public void setAnnualSales(double annual_sales) { //mutator setAnnualSales to set the value of sales data field
sales = annual_sales; } }
However you can use my DemoSalesperson2 application for your own SalesPerson class.
Now I will explain the working of for loop used in DemoSalesperson2
Iteration 1:
i=0
i<sp.length is true because length of sp[] is 10 so i<10
This means the body of for loop will execute.
The statement inside the body of for loop is :
sp[i] =new SalesPerson(start_id+i,start_sal+5000*(i));
class SalesPerson constructor is used to access the data members of SalesPerson class
start_id = 111
start_sal=25000
start_id+i = 111 + 0 = 111
start_sal+5000*(i) = 25000 + 5000 (0) = 25000
The values 111 and 25000 are stored to sp[0] means at the first index of the sp array.
System.out.println(sp[i].getId()+" "+sp[i].getAnnualSales() );
This statement uses sp object to get access to the getId and getAnnualSales methods to print the id number and sales amount.
So the output at 1st iteration is:
111 25000.0
Iteration 1:
The value of i is incremented to 1 so now i = 1
i<sp.length is true because length of sp[] is 10 so i<10
This means the body of for loop will execute.
The statement inside the body of for loop is :
sp[i] =new SalesPerson(start_id+i,start_sal+5000*(i));
class SalesPerson constructor is used to access the data members of SalesPerson class
start_id = 111
start_sal=25000
start_id+i = 111 + 1 = 112
start_sal+5000*(i) = 25000 + 5000 (1) = 25000 + 5000 = 30000
The values 111 and 25000 are stored to sp[1] means at the first index of the sp array.
System.out.println(sp[i].getId()+" "+sp[i].getAnnualSales() );
This statement uses sp object to get access to the getId and getAnnualSales methods to print the id number and sales amount.
So the output at 1st iteration is:
112 30000.0
The loop keeps iterating and the value of id is incremented by 1 and value of sales is increased by 5000 at every iteration.
This loop continues to execute until the value of i exceeds the length of sp array i.e. 10.
The values from iteration 1 to 8 following the above explanation are:
Iteration 1:
111 25000.0
Iteration 2:
112 30000.0
Iteration 3:
113 35000.0
Iteration 4:
114 40000.0
Iteration 5:
115 45000.0
Iteration 6:
116 50000.0
Iteration 7:
117 55000.0
Iteration 8:
118 60000.0
Iteration 9:
119 65000.0
Iteration 10:
120 70000.0
At iteration 11 the for loop body will not execute as value of i at 11th iteration is i = 10 and i<sp.length evaluates to false as i = sp.length because length of sp array is 10 and now the value of i is also 10. So the loop ends. Screenshot of the program and its output is attached.
How to set up a simple peer-to-peer network using a star topology?
Answer:
The description including its scenario is listed throughout the explanation section below.
Explanation:
Star topology seems to be a LAN system under which all points are connected to a single cable link location, such as with a switch as well as a hub. Put it another way, Star topology is among the most commonly used network configurations.
Throughout this configuration or setup:
Each common network setups network unit, such as a firewall, switch, as well as computer. The main network computer serves as either a server as well as the peripheral system serves as just a client.4. Discuss the advantages and disadvantages of using the same system call interface for both files and devices. Why do you think operating system designers would use the same interface for both
Answer:
According to the principles of design, Repetition refers to the recurrence of elements of the design
One of the advantages of this is that it affords uniformity. Another is that it keeps the user of such a system familiar or with the interface of the operating system.
One major drawback of this principle especially as used in the question is that it creates a familiar route for hackers.
Another drawback is that creates what is called "repetition blindness". This normally occurs with perceptual identification tasks.
The phenomenon may be due to a failure in sensory analysis to process the same shape, figures or objects.
Cheers!
Write code to create a list of numbers from 0 to 67 and assign that list to the variable nums. Do not hard code the list. Save & RunLoad HistoryShow CodeLens
Answer:
The program written in Python is as follows
nums = []
for i in range(0,68):
-->nums.append(i)
print(nums)
Explanation:
Please note that --> is used to denote indentation
The first line creates an empty list
nums = []
This line creates an iteration from 0 to 67, using iterating variable i
for i in range(0,68):
This line saves the current value of variable i into the empty list
nums.append(i)
At this point, the list has been completely filled with 0 to 67
This line prints the list
print(nums)
Your boss wants you to start making your own Ethernet cables to save the company money. What type of connectors will you need to order to make them?
Answer:
Bulk Ethernet Cable - Category 5e or CAT5e
Bulk RJ45 Crimpable Connectors for CAT-5e
Explanation:
differentiate between web site and web application?
Explanation:
A website is a group of globally accessible into linked pages which have a single domain name. A web application is a software or program is is accessible using any web browser.
Answer:
Explanation:
A website shows static or dynamic data that is predominantly sent from the server to the user only, whereas a web application serves dynamic data with full two way interaction.
A customer contacts the help disk stating a laptop does not remain charged for more than 30 minutes and will not charge more than 15%. Which of the following components are the MOST likely causes the issue? (Select three.) A. LCD power inverter B. AC adapter C. Battery D. Processor E. VGA card F. Motherboard G. Backlit keyboard H. Wireless antenna
Answer:
A. LCD power inverter
B. AC adapter
C. Battery
Enter key is also known as Return key. (True or false)
Answer:
I think false
hope it helps
Answer:
False
Explanation:
The return key is the backspace or escape key.
Hope it helps.
12. Kelly would like to know the average bonus multiplier for the employees. In cell C11, create a formula using the AVERAGE function to find the average bonus multiplier (C7:C10).
Answer:
1. Divide each bonus by regular bonus apply this to all the data
2. In cell C11 write, "Average" press tab key on the keyboard and then select the range of the cells either by typing "C7:C10" or by selecting it through the mouse.
Explanation:
The average bonus multiplier can be found by dividing each bonus with the regular bonus applying this to all the data and then putting the average formula and applying it to the cells C7:C10.
After dividing the bonus with regular bonus, in cell C11 write, "Average" press tab key on the keyboard and then select the range of the cells either by typing "C7:C10" or by selecting it through the mouse.
The user can set their own computer hostname and username. Which stage of the hardware lifecycle does this scenario belong to?
Answer:
Deployment
Explanation:
Hardware lifecycle management is geared at making optimum use of the computer hardware so as to maximize all the possible benefits. During the deployment stage of the hardware lifecycle, the user is prompted by the computer to input their own computer hostname and username. In doing this, it is important that the user takes note of possible flaws in security. Passwords are set at this stage too. The four stages in the hardware lifecycle are procurement, deployment, maintenance, and retirement. At the deployment stage, the hardware is set up and allocated to employees so that they can discharge their duties effectively.
So, for organizations, it is important that strong passwords are used to prevent security breaches in the event that an employee leaves the organization.
Answer:
Deployment
Explanation:
opearating system protection refers to a mechanism for controling access by programs, processes, or users to both system and user resources. briefly explain what must be done by the operating system protection mechanism in order to provide the required system protection
Answer:
The operating system must by the use of policies define access to and the use of all computer resources.
Policies are usually defined during the design of the system. These are usually default in settings. Others are defined and or modified during installation of the addon and or third-party software.
Computer Security Policies are used to exact the nature and use of an organisations computers systems. IT Policies are divided into 5 classes namely:
General PoliciesServer PoliciesVPN PoliciesBack-Up PoliciesFirewall Access and Configuration PoliciesCheers!
When you are creating a certificate, which process does the certificate authority use to guarantee the authenticity of the certificate
Answer:
Verifying digital signature
Explanation:
In order to guarantee authenticity of digital messages an documents, the certificate authority will perform the verification of the digital signature. A valid digital signature indicates that data is coming from the proper server and it has not been altered in its course.
You are in a rectangular maze organized in the form of M N cells/locations. You are starting at the upper left corner (grid location: (1; 1)) and you want to go to the lower right corner (grid location: (M;N)). From any location, you can move either to the right or to the bottom, or go diagonal. I.e., from (i; j) you can move to (i; j + 1) or (i + 1; j) or to (i+1; j +1). Cost of moving right or down is 2, while the cost of moving diagonally is 3. The grid has several cells that contain diamonds of whose value lies between 1 and 10. I.e, if you land in such cells you earn an amount that is equal to the value of the diamond in the cell. Your objective is to go from the start corner to the destination corner. Your prot along a path is the total value of the diamonds you picked minus the sum of the all the costs incurred along the path. Your goal is to nd a path that maximizes the prot. Write a dynamic programming algorithm to address the problem. Your algorithm must take a 2-d array representing the maze as input and outputs the maximum possible prot. Your algorithm need not output the path that gives the maximum possible prot. First write the recurrence relation to capture the maximum prot, explain the correctness of the recurrence relation. Design an algorithm based on the recurrence relation. State and derive the time bound of the algorithm. Your algorithm should not use recursion
Answer:
Following are the description of the given points:
Explanation:
A) The Multiple greedy approaches could exist, which could be to reach for the closest emergency diamond, and yet clearly we are going to miss some very essential routes in that case. So, it can make every argument quickly, and seek to demonstrate a reference case for that.
B) An approach to the evolutionary algorithm and its users are going to just have states M x N. But each state (i, j) indicates the absolute difference between the amount of the selected diamond and the amounts of the costs incurred.
DP(i, j) = DimondVal(i, j) + max ((DP(i, j-1)-2), (DP(i-1,j-1)-3))
DP(i, j) is a description of the state.
DimondVal(i, j) is the diamond value at (i j), 0 if there is no diamond available.
This states must calculate the states of M N and it involves continuous-time for each State to determine. Therefore the amount of time of such an algo is going to be O(MN).
ZigBee is an 802.15.4 specification intended to be simpler to implement, and to operate at lower data rates over unlicensed frequency bands.
a. True
b. False
Answer:
True
Explanation:
Solution
ZigBee uses unlicensed frequency bands but operate at slower speed or data rates.
ZigBee: This communication is particular designed for control and sensor networks on IEEE 802.15.4 requirement for wireless personal area networks (WPANs), and it is a outcome from Zigbee alliance.
This communication level defines physical and (MAC) which is refereed to as the Media Access Control layers to manage many devices at low-data rates.
Distinguish among packet filtering firewalls, stateful inspection firewalls, and proxy firewalls. A thorough answer will require at least a paragraph for each type of firewall.
Acme Corporation wants to be sure employees surfing the web aren't victimized through drive-by downloads. Which type of firewall should Acme use? Explain why your answer is correct.
Answer:
packet filtering
Explanation:
We can use a packet filtering firewall, for something like this, reasons because when visiting a site these types of firewalls should block all incoming traffic and analyze each packet, before sending it to the user. So if the packet is coming from a malicious origin, we can then drop that packet and be on our day ;D
How many times will the while loop that follows be executed? var months = 5; var i = 1; while (i < months) { futureValue = futureValue * (1 + monthlyInterestRate); i = i+1; }
a. 5
b. 4
c. 6
d. 0
Answer:
I believe it is A
Explanation:
Do transformers have life insurance or car insurance? If you chose life insurance, are they even alive?
Answer:
Car insurance
Explanation:
they are machines with ai
ICMP
(a) is required to solve the NAT traversal problem
(b) is used in Traceroute
(c) has a new version for IPv6
(d) is used by Ping
Answer:
(b) is used in Traceroute
(d) is used by Ping
Explanation:
ICMP is the short form of Internet Control Message Protocol. It is a protocol used by networking devices such as routers to perform network diagnostics and management. Since it is a messaging protocol, it is used for sending network error messages and operations information. A typical message could be;
i. Requested service is not available
ii. Host could not be reached
ICMP does not use ports. Rather it uses types and codes. Some of the most common types are echo request and echo reply.
Traceroute - which is a diagnostic tool - uses some messages available in ICMP (such as Time Exceeded) to trace a network route.
Ping - which is an administrative tool for identifying whether a host is reachable or not - also uses ICMP. The ping sends ICMP echo request packets to the host and then waits for an ICMP echo reply from the host.
ICMP is not required to solve NAT traversal problem neither does it have a new version in IPV6.
Write a sentinel-controlled while loop that accumulates a set of integer test scores input by the user until negative 99 is entered.
Answer:
Here is the sentinel-controlled while loop:
#include <iostream> //to use input output functions
using namespace std; // to identify objects like cin cout
int main(){ // start of main() function body
int test_score; // declare an integer variable for test scores
//prompts user to enter test scores and type-99 to stop entering scores
cout << "Enter the test scores (enter -99 to stop): ";
cin >> test_score; // reads test scores from user
while (test_score != -99){ // while loop keeps executing until user enters -99
cin >> test_score; } } // keeps taking and reading test scores from user
Explanation:
while loop in the above chunk of code keeps taking input scores from user until -99 is entered. Sentinel-controlled loops keep repeating until a sentinel value is entered. This sentinel value indicates the end of the data entry such as here the sentinel value is -99 which stops the while loop from iterating and taking the test score input from user.
The complete question is that the code should then report how many scores were entered and the average of these scores. Do not count the end sentinel -99 as a score.
So the program that takes input scores and computes the number of scores entered and average of these scores is given below.
#include <iostream> // to use input output functions
using namespace std; // to identify objects like cin cout
int main(){ //start of main function body
double sum = 0.0; // declares sum variable to hold the sum of test scores
int test_score,count =0;
/* declares test_scores variable to hold the test scores entered by user and count variable to count how many test scores input by user */
cout << "Enter the test scores (or -99 to stop: ";
//prompts user to enter test scores and type-99 to stop entering scores
cin >> test_score; // reads test scores from user
while (test_score != -99){ // while loop keeps executing until user enters -99
count++; /* increments count variable each time a test cores is input by user to count the number of times user entered test scores */
sum = sum + test_score; // adds the test scores
cin >> test_score;} // reads test scores from user
if (count == 0) // if user enters no test score displays the following message
cout << "No score entered by the user" << endl;
else //if user enters test scores
//displays the numbers of times test scores are entered by user
cout<<"The number of test scores entered: "<<count;
/* displays average of test scores by dividing the sum of input test scores with the total number of input test scores */
cout << "\n The average of " << count << " test scores: " <<sum / count << endl;}
The program along with its output is attached.
k- Add the code to define a variable of type 'double', with the name 'cuboidVolume'. Calculate the volume of the cuboid and set this variable value.
Answer:
Here is the JAVA program to calculate volume of cuboid:
import java.util.Scanner; // Scanner class is used to take input from user
public class CuboidVol { // class to calculate volume of cuboid
public static void main(String[] args) { // start of main() function body
Scanner input= new Scanner(System.in); //create Scanner class object
// prompts user to enter length of cuboid
System.out.println("Enter the cuboid length:");
double length=input.nextDouble(); //reads the input length value from user
// prompts user to enter width of cuboid
System.out.println("Enter the cuboid width:");
double width=input.nextDouble(); //reads the input width from user
// prompts user to enter height of cuboid
System.out.println("Enter the cuboid height:");
double height=input.nextDouble(); //reads the input height from user
/* the following formula is to calculate volume of a cuboid by multiplying its length width and height and a double type variable cuboidVolume is defined to store the value of the resultant volume to it */
double cuboidVolume= length*width*height; //calculates cuboid volume
//displays volume of cuboid and result is displayed up to 2 decimal places
System.out.printf("Volume of the cuboid (length " + length + "/ height " + height + "/ width" +width +" is: " + "%.2f",cuboidVolume); } }
Explanation:
The formula for the volume of a cuboid is as following:
Volume = Length × Width × Height
So in order to calculate the volume of cuboid three variable are required for length, width and height and one more variable cuboidVolume to hold the resultant volume of the cuboid.
The program is well explained in the comments added to each statement of the program. The program prompts the user to enter the value of height width and length of cuboid and the nextDouble() method is used to take the double type input values of height length and width. Then the program declares a double type variable cuboidVolume to hold the result of the volume of cuboid. Then the last printf statement is used to display the volume of cuboid in the format format "Volume of the cuboid (length / height / width ) is" and the result is displayed up to 2 decimal places.
The screenshot of the program along with its output is attached.
All of the following are examples of being computer literate, EXCEPT ________. knowing how to use the web efficiently knowing how to build and program computers knowing how to avoid hackers and viruses knowing how to maintain and troubleshoot your computer
Answer:knowing how to build and program computers.
Explanation:
24. Which of the following statements about Emergency Support Functions (ESFs) is correct?
O A. ESFs are not exclusively federal coordinating mechanism
O B. ESFs are only a state or local coordinating mechanism
O C. ESFs are exclusively a federal coordinating mechanism
O D. ESFs are exclusively a state coordinating mechanism
(ESFs) is correct: ESFs are not exclusively federal coordinating mechanism.
What's the value of this Python expression? ((10 >= 5*2) and (10 <= 5*2))
Answer:
1 (true)
Explanation:
10 == 10 is valid=> 10 >= 10 is valid => 10 >=(5*2) is valid
10 == 10 is valid=> 10 <= 10 is valid => 10 <=(5*2) is valid
=> ((10 >= 5*2) and (10 <= 5*2)) is valid => Return 1 or True
What are the pros and cons of using a linked implementation of a sparse matrix, as opposed to an array-based implementation?
Answer:
Linked lists and arrays are both linear data structures but while an array is a collection of items that can be accessed randomly, a linked list can be accessed sequentially.
A sparse matrix contains very few non-zero elements. For example;
_ _
| 0 0 3 0 6 |
| 0 5 0 0 4 |
| 2 0 0 0 0 |
|_ 0 0 0 0 0 _|
In the implementation of a sparse matrix, the following are some of the pros and cons of using a linked list over an array;
PROS
i. Linked lists are dynamic in nature and are readily flexible - they can expand and contract without having to allocate and/or de-allocated memory compared to an array where an initial size might need to be set and controlled almost manually. This makes it easy to store and remove elements from the sparse matrix.
ii. No memory wastage. Since the size of a linked list can grow or shrink at run time, there's no memory wastage as it adjusts depending on the number of items it wants to store. This is in contrast with arrays where you might have unallocated slots. Also, because the zeros of the sparse matrix need not be stored when using linked lists, memory is greatly conserved.
CONS
i. One of the biggest cons of linked lists is the difficulty in traversing items. With arrays, this is just of an order of 0(1) since the only requirement is the index of the item. With linked lists, traversal is sequential which means slow access time.
ii. Storage is another bottle neck when using linked lists in sparse matrix implementation. Each node item in a linked list contains other information that needs to be stored alongside the value such as the pointer to the next or previous item.