Answer:
Option A (One SAN certificate) is the right answer.
Explanation:
A vulnerability management certificate that permits many domain identities to be safeguarded by such a singular or unique certification, is considered a SAN certificate.Though on the verge of replacing common as well as accepted security credentials with either of these de-facto certifications.Other alternatives are not connected to the given scenario. Thus the above option is correct.
You are going to purchase (2) items from an online store.
If you spend $100 or more, you will get a 10% discount on your total purchase.
If you spend between $50 and $100, you will get a 5% discount on your total purchase.
If you spend less than $50, you will get no discount.
Givens:
Cost of First Item (in $)
Cost of Second Item (in $)
Result To Print Out:
"Your total purchase is $X." or "Your total purchase is $X, which includes your X% discount."
Answer:
Code:-
using System;
using System.Collections.Generic;
class MainClass {
public static void Main (string[] args) {
int Val1,Val2,total;
string input;
double overall;
Console.Write("Cost of First Item (in $)");
input = Console.ReadLine();
Val1 = Convert.ToInt32(input);
Console.Write("Cost of Second Item (in $)");
input = Console.ReadLine();
Val2 = Convert.ToInt32(input);
total=Val1+Val2;
if (total >= 100)
{
overall=.9*total;
Console.WriteLine("Your total purchase is $"+overall);
}
else if (total >= 50 & total < 100)
{
overall=.95*total;
Console.WriteLine("Your total purchase is $"+overall);
}
else
{
Console.WriteLine("Your total purchase is $"+total);
}
}
}
Output:
1. Create a pseudocode program that asks students to enter a word. Call a function to compute the different ways in which the letters that make up the word can be arranged.
2. Convert the pseudocode in question one to JavaScript and test your program.
Answer:
1)Pseudocode:-
Prompt user to enter string
Pass it to combination function which can calculate the entire combination and can return it in an array
In combination method -
Check if the string is length 2 size ie of 0 or 1 length then return string itself
Else iterate through string user entered
Get the present character within the variable and check if the variable is already used then skip
Create a string from 0 to i the index + (concatenate) i+1 to length and recursive call combination function and pass this string and store end in subpermutation array
For each recursive call push character + sub permutation in total arrangement array.
2)Code -
function combinations(userStr) {
/* when string length is less than 2 then simply return string */
if (userStr.length < 2) return userStr;
/* this array will store number of arrangement that word can be stored */
var totalArrangements = [];
/* iterate through string user enter */
for (var i = 0; i < userStr.length; i++) {
/* get the current character */
var character = userStr[i];
/*check if character is already used than skip */
if (userStr.indexOf(character) != i)
continue;
/* create a string and concanete it form 0 to i index and i+1 to length of array */
var str = userStr.slice(0, i) + userStr.slice(i + 1, userStr.length);
/* push it to totalArrangments */
for (var subPermutation of combinations(str))
totalArrangements.push(character + subPermutation)
}
/* return the total arrangements */
return totalArrangements;
}
/* ask user to prompt string */
var userStr = prompt("Enter a string: ");
/* count to count the total number of combinations */
let count = 0;
/* call function the return tolal number of arrangement in array */
totalArrangements = combinations(userStr);
/* print the combination in console */
for (permutation of totalArrangements) {
console.log(permutation)
}
/* total combination will be totalArrangements.length */
count = totalArrangements.length;
/*print it to console */
console.log("Total combination " + count)
Output:-
Compute the acceleration of gravity for a given distance from the earth's center, distCenter, assigning the result to accelGravity. The expression for the acceleration of gravity is: (G * M) / (d2), where G is the gravitational constant 6.673 x 10-11, M is the mass of the earth 5.98 x 1024 (in kg) and d is the distance in meters from the earth's center (stored in variable distCenter).
#include
using namespace std;
int main() {
double G = 6.673e-11;
double M = 5.98e24;
double accelGravity;
double distCenter;
cin >> distCenter;
/* Your solution goes here */
cout << accelGravity << endl;
return 0;
}
Answer:
Replace /* Your solution goes here */ with the following expression
accelGravity = (G * M) / (distCenter *distCenter );
Explanation:
Required
Complete the code
The equivalent expression of (G * M) / (d^2) is:
(G * M) / (distCenter *distCenter );
The expression must be stored in accelGravity.
So, we have:
accelGravity = (G * M) / (distCenter *distCenter );
A computer has many resources. A resource can be memory, disk drive, network bandwidth, battery power, or a monitor. It can also be system objects such as shared memory or a linked list data structure. This principle is based in object-oriented programming (OOP). In OOP, a class definition encapsulates all data and functions to operate on the data. The only way to access a resource is through the provided interface. Which security principle are we referring to
Answer:
The security principle being referred to here is:
Resource Encapsulation.
Explanation:
Resource Encapsulation is one of the cybersecurity first principles. It allows access or manipulation of the class data as intended by the designer. The cybersecurity first principles are the basic or foundational propositions that define the qualities of a system that can contribute to cybersecurity. Other cybersecurity first principles, which are applied during system design, include domain separation, process isolation, modularization, abstraction, least principle, layering, data hiding, simplicity, and minimization.
Brooke is trying to save enough money in the next year to purchase a plane ticket to Australia. Every month Brooke saves $200. Write a for loop that displays how much money Brooke will save at the end of each month for the next 12 months.
Answer:
var monthlyDeposit = 200;
var accountBalance = 0;
for(var i = 0;i<12;i++){
accountBalance += monthlyDeposit;
console.log(accountBalance);
}
A technology company starts a program dedicated to training high school students in the use of the latest computer programming languages. How can the company justify creating and funding such a program since it is not about its primary products
Answer:
The answer is "Spending the money can improve the company's reputation and attract new personnel with the necessary abilities".
Explanation:
In many cases, companies engage in activities tangential to their principal service or brand. As more than just a result, the purpose is to boost the company's reputation and at the same time raising societal awareness.
To strengthen its very own business reputation and to create future employees by teaching necessary skills, a technology organization may be established throughout the given case.
Every one of these initiatives helps to boost the brand's reputation & image, as well as the customer's confidence.
Which of these is a tool for creating mobile apps?
Appy Pie
C#
Apple Pie
C++
Answer:
C++
Explanation:
C++ is used in application development
Write programming code in C++ for school-based grading system. The program should accept the Subject and the number of students from a user and store their details in an array of type Student (class). The student class should have: • studName, indexNo, remarks as variables of type string, marks as integer, and grade as char. • A void function called getData which is used to get students’ details (index number, name, and marks). • A void function called calculate which will work on the marks entered for a student and give the corresponding grade and remarks as give below. Marks Grade Remarks 70 – 100 A Excellent 60 – 69 B Very Good 50 – 59 C Pass 0 – 49 F Fail • Should be able to display the results for all students (index number, name, marks, grade, remarks). 2. Draw a flowchart for the calculate function above. 3. Create a folder with name format ICTJ254_indexnumber (eg
Answer:
Explanation:
// C++ Program to Find Grade of Student
// -------codescracker.com-------
#include<iostream>
using namespace std;
int main()
{
int i;
float mark, sum=0, avg;
cout<<"Enter Marks obtained in 5 Subjects: ";
for(i=0; i<5; i++)
{
cin>>mark;
sum = sum+mark;
}
avg = sum/5;
cout<<"\nGrade = ";
if(avg>=91 && avg<=100)
cout<<"A1";
else if(avg>=81 && avg<91)
cout<<"A2";
else if(avg>=71 && avg<81)
cout<<"B1";
else if(avg>=61 && avg<71)
cout<<"B2";
else if(avg>=51 && avg<61)
cout<<"C1";
else if(avg>=41 && avg<51)
cout<<"C2";
else if(avg>=33 && avg<41)
cout<<"D";
else if(avg>=21 && avg<33)
cout<<"E1";
else if(avg>=0 && avg<21)
cout<<"E2";
else
cout<<"Invalid!";
cout<<endl;
return 0;
}
The operating system (OS) of an information system contains the software that executes the critical functions of the information system. The OS manages the computer's memory, processes, and all of its software and hardware. It allows different programs to run simultaneously and access the computer's memory, central processing unit, and storage.
a. True
b. False
Answer:
a. True
Explanation:
An information system (IS) can be defined as a set of components or computer systems, which is used to collect, store, and process data, as well as dissemination of information, knowledge, and distribution of digital products.
Generally, it is an integral part of human life because individuals, organizations, and institutions rely on information systems in order to perform their duties, functions or tasks and to manage their operations effectively. For example, all organizations make use of information systems for supply chain management, process financial accounts, manage their workforce, and as a marketing channels to reach their customers or potential customers.
Additionally, an information system comprises of five (5) main components;
1. Hardware.
2. Software.
3. Database.
4. Human resources.
5. Telecommunications.
An operating system is a system software pre-installed on a computing device to manage or control software application, computer hardware and user processes.
This ultimately implies that, an operating system acts as an interface or intermediary between the computer end user and the hardware portion of the computer system (computer hardware) in the processing and execution of instructions.
On a related note, the software application that executes the critical functions of an information system (IS) are contained in its operating system (OS).
Basically, the computer's memory, processes, softwares and hardwares are typically being managed by the operating system (OS). Thus, an OS makes it possible for different programs to run simultaneously (more than one software program running concurrently) and access the computer's memory, central processing unit (CPU), and storage.
If we are transferring data from a mobile device to a desktop and receive an error message that the mobile device has stopped communicating with the desktop, what is most likely the root cause?
a. the physical head on the cable os not the correct type
b. one of the ports on either device is damaged or under powered
c. the computer is not running the correct application
d. cable is not the correct color
Answer should probably be B. I don’t think you’d need an application to transfer data, and the computer wouldn’t even tell you if the data couldn’t transfer if you have the wrong cable head. It wouldn’t even be connected.
The root cause at the time when transferring the data from mobile device to the computer is that the port on the device is either damaged or it is underpowered.
The following are not the root causes for the error message at the time of transferring the data from a mobile device to the computer:
The cable is not of accurate type.The computer does not run the right application.The cable is not of accurate color.Therefore we can conclude that the root cause at the time when transferring the data from a mobile device to the computer is that the port on the device is either damaged or it is underpowered.
Learn more about the data here: brainly.com/question/10980404
Write a void function SelectionSortDescendTrace() that takes an integer array and sorts the array into descending order. The function should use nested loops and output the array after each iteration of the outer loop, thus outputting the array N-1 times (where N is the size). Complete main() to read in a list of up to 10 positive integers (ending in -1) and then call the SelectionSortDescendTrace() function. If the input is:
Answer:
Explanation:
The following program is written in Java. The main method asks the user to enter 10 different integer values. These values are saved to an integer array and passed to the SelectionSortDescendTrace() method. This method sorts the array in descending order while printing the entire array after every outer loop cycle. The program was tested and the output can be seen in the attached image below.
import java.util.*;
class Brainly {
// Main Method
public static void main(String[] args)
{
Scanner in = new Scanner(System.in);
int[] myArr = new int[10];
for (int i = 0; i < 10; i++) {
System.out.print("Enter an integer: ");
myArr[i] = in.nextInt();
System.out.print('\n');
}
SelectionSortDescendTrace(myArr);
}
public static void SelectionSortDescendTrace(int[] myArr) {
int temp;
for (int i = 0; i < myArr.length; i++)
{
for (int j = 0; j <myArr.length; j++)
{
if (j != myArr.length - 1)
{
if (myArr[j] < myArr[j + 1])
{
temp = myArr[j];
myArr[j] = myArr[j + 1];
myArr[j + 1] = temp;
}
}
}
System.out.println(Arrays.toString(myArr));
}
}
}
g Add a throw statement to the processNumbers function that throws the message "An element in the list is not a number." if one of the elements in toProcess is not a number. Hint: The function isNaN() returns true if the parameter is not a number.
Answer and Explanation:
function processNumbers(alist){
var Ourarray= new array(alist);
Ourarray.foreach(
if(isNaN()){
Console.log( "An element in the list is not a number."};
break;
}
}
processNumbers(alist)
From the above, we have defined a function that takes an array parameter(the following array variable will make sure of that). We test each element in the array using foreach array function. The for each function runs the if statement and if isNan is true for each of the elements in the array.
The Lisp function LENGTH counts the number of elements in the top level of a list. Write a function ALL-LENGTH of one argument that counts the number of atoms that occur in a list at all levels. Thus, the following lists will have the following ALL-LENGTHs.
(A B C) => 3
((A (B C) D (E F)) => 6
(NIL NIL (NIL NIL) NIL ) => 5
Answer:
bc
Explanation:
Question 3 of 5.
Which of the following option(s) explain the need for ETL?
O ETL provides a method of moving the data from various sources into a data warehouse.
ETL is a predefined process for accessing and manipulating source data into the target database.
Allow verification of data transformation, aggregation and calculations rules.
O All of the above
The correct option is "All of the above".
ETL simply means “extract, transform, and load.” ETL is a vital process in the strategies of data integration.
ETL also allows for verification of data transformation, aggregation and calculations rules.
Furthermore, ETL enables companies to be able to gather data from different sources and then consolidate the data hats gathered into a single and centralized location.
ETL also allows different types of data to be able to work together.
In conclusion, based on the information given above, the answer will be All of the above.
Read related link on:
https://brainly.com/question/13333461
Write a program whose input is a character and a string, and whose output indicates the number of times the character appears in the string. The output should include the input character and use the plural form, n's, if the number of times the characters appears is not exactly 1. Ex: If the input is: n Monday the output is: 1 n Ex: If the input is: z Today is Monday the output is: 0 z's Ex: If the input is: n It's a sunny day the output is: 2 n's Case matters. Ex: If the input is: n Nobody the output is: 0 n's n is different than N.
Answer:
The program in Python is as follows:
char = input("Character: ")[0]
string = input("String: ")
kount = string.count(char)
print(kount,char,end="")
if kount!=1:
print("'s")
Explanation:
This gets character input
char = input("Character: ")[0]
This gets string input
string = input("String: ")
This counts the occurrence of char in string
kount = string.count(char)
This prints the number of occurrence and the character
print(kount,char,end="")
This prints 's, if kount is other than 1
if kount!=1:
print("'s")
1. Open the start file EX2019-ChallengeYourself-9-3. The file will be renamed automatically to include your name. Change the project file name if directed to do so by your instructor, and save it.
2. If the workbook opens in Protected View, click the Enable Editing button in the Message Bar at the top of the workbook so you can modify the workbook.
3. Use Consolidate to create a summary of real estate sales for all property types. Place the consolidated data on the Summary worksheet in cells B3: C15. Use the Average function to consolidate the data from cells B2: C14 in the Condo, Townhouse, and Single Family worksheets. Include links to the source data.
4. Import individual sales data from the tab-delimited text file Select Sales Data 2019-2020. Import the data as a table in cell A1 of the Select Sales worksheet.
5. Remove the data connection when the import is complete.
6. In the Select Sales worksheet, add data validation to restrict values in the House Type columns (cells B2: B139) to the values in the cell range named PropertyTypes. Include a drop-down list of values in the cells to assist in data correction.
7. Add the following input message to cells B2:B139: Select a property type from the list.
8. Add the following error alert to cells B2:B139: Not a valid property type.
9. Apply data validation circles to any values that violate the data validation rules you just created.
10. Add a comment to cell B1 in the Select Sales worksheet that reads: This needs to be fixed.
11. Add a hyperlink from cell B1 in the Select Sales worksheet to link to the named range (defined name) PropertyTypes. Test the link.
12. Use Flash Fill to add a new column of data to the Select Sales worksheet to display the number of bedrooms/the number of bathrooms.
a. In the Select Sales worksheet, cell F1, type the heading: BR/BA
b. Complete the column of data using this pattern in cell F2: 1 BR/1 BA
You will need to enter at least two samples in order for Flash Fill to suggest the correct autofill data. Check your work carefully.
Sales Summary 2019-2020
Number of Sales Average Selling Price
1
2
3 One BR, One BA
4 One BR, Two BA +
5 Two BR, One BA
6 Two BR, Two BA
7 Two BR, Two BA +
8 Three BR, One BA
9 Three BR, Two BA
10 Three BR, Three BA +
11 Four BR, One BA
12 Four BR, Two BA
13 Four BR, Three BA+
14 Five BR-. One BA
15 Five BR+ Two BA+
16
17
18
19
20
21
22
23
24
Answer:
Omg what is this
soooo long questionn
i am fainted
what rubbish you written how long the question is of which subject
what's your name
(viii) Word does not allow you to customize margins.
true/false:-
Write a C program to input a character, then check if the input
character is digit, letter, or other character.
Answer:
// CPP program to find type of input character
#include <iostream>
using namespace std;
void charCheck(char input_char)
{
// CHECKING FOR ALPHABET
if ((input_char >= 65 && input_char <= 90)
|| (input_char >= 97 && input_char <= 122))
cout << " Alphabet ";
// CHECKING FOR DIGITS
else if (input_char >= 48 && input_char <= 57)
cout << " Digit ";
// OTHERWISE SPECIAL CHARACTER
else
cout << " Special Character ";
}
// Driver Code
int main()
{
char input_char = '$';
charCheck(input_char);
return 0;
}
Explanation:
// CPP program to find type of input character
#include <iostream>
using namespace std;
void charCheck(char input_char)
{
// CHECKING FOR ALPHABET
if ((input_char >= 65 && input_char <= 90)
|| (input_char >= 97 && input_char <= 122))
cout << " Alphabet ";
// CHECKING FOR DIGITS
else if (input_char >= 48 && input_char <= 57)
cout << " Digit ";
// OTHERWISE SPECIAL CHARACTER
else
cout << " Special Character ";
}
// Driver Code
int main()
{
char input_char = '$';
charCheck(input_char);
return 0;
}
write a program that keeps taking integers until the user enters in python
int main {
//variables
unsigned long num = 0;
std::string phrase = " Please enter your name for confirmation: " ;
std::string name;
//codes
std::cout << phrase;
std::cin>> name;
while ( serial.available() == 0 ) {
num++;
};
if ( serial.avaliable() > 0 ) {
std::cout << " Thank you for your confirmation ";
};
};
Please draw the dynamic array stack structure (you must mention the size and capacity at each step) after the following lines of code are executed. You should assume that the initial capacity is 2 and a resize doubles the capacity.
values = Stack()
for i in range( 16 ) :
if i % 3 == 0 :
values.push( i )
else if i % 4 == 0 :
values.pop()
Answer:
Explanation:
dxfcgvhb
College
START: what new information, strategies, or techniques have you learned that will increase your technology skills? Explain why its important to START doing this right away
Answer:
Read Technical Books. To improve your technical skills and knowledge, it's best to read technical books and journals. ...
Browse Online Tutorials. ...
Build-up online profile. ...
Learn new Tools. ...
Implement what you learned. ...
Enrich your skillset. ...
Try-out and Apply.
Fit a boosting model to the training set with Purchase as the response and the other variables as predictors. Use 1,000 trees, and a shrinkage value of 0.01. Which predictors appear to be the most important
Answer and Explanation:
For the training set consist of 1000 observations, let's have a set consist of the observations such as sets.seed train boost.caravan gbm(Purchase., data = Caravan.train , distribution = "gaussian" , n trees = 1000 summary(boost.caravan) The tree classification such as tree(formula = Purchase data - train where variable are used in tree construction and number of terminal nodes 0 and deviance is 0.7 and error is 0.165
Argue whether we can infer anything about a candidate’s ability to work in a professional environment based on his or her resume’s formatting.
Compare how you would address a resume with wacky fonts to how you would respond to grammatical errors in a resume.
Answer:
when dressing feaded back is postive and then list areas of inprovmenr to met the job requirements
Explanation:
Write a pseudocode method swap(aList, i, j) that interchanges the items currently in positions i and j of a list. Define the method in terms of the operations of the ADT list, so that it is independent of any particular implementation of the list. Assume that the list, in fact, has items at positions i and j. What impact does this assumption have on your solution
Answer:
Explanation:
The following pseudocode for this method using operations of the ADT list would be the following
swap(aList, indexI, indexJ) {
initialize temp_variable = Retrieve(indexI, aList)
Insert(Retrieve(indexJ, aList), indexI, aList)
Insert(Retrieve(indexI, aList), temp_variable, aList)
}
This code basically saves the aList index of i , into a temporary Variable. Then it sets the aList index of i to the value of the element in index of j. Then it does the same for the index of j with the tem_variable. If we assume that the indexes of i and j exist, then it can crash our entire program if those indexes are missing from the list when we try to access them.
Given the following array definition, write a constant declaration named ArraySize that automatically calculates the size in bytes, of the array:
newArray DWORD 10,20,30,40,50
a) arraysize=(S-newArray)
b) arraysize#(S-new,Array)/2
c) arraySize- (S-newArray)/4
d) arraySize- (S-arraySize)
Answer:
ArraySize = ($ - newArray)
Explanation:
Given
Array name: newArray
Type: DWORD
Required
The size of the array in bytes
The following formula is used to calculate the size of an array in assembly language.
Variable = ($-Array name)
So, we have:
ArraySize = ($ - newArray)
Where ArraySize is the variable that holds the size of newArray (in bytes)
A choropleth map is used to
Group of answer choices
do a scatter plot.
show live satellite images.
present geographical regions in 3D.
present geographical regions coloured, shaded, or graded according to some variable.
What is the definition of: a computer network? data communications? telecommunications? a local area network? a personal area network? a metropolitan area network a wide area network? network management? convergence? g
Answer:
The answer is below
Explanation:
1. Computer Network: this is a system of interconnection of computers and computing devices that utilizes wires or radio waves over certain reachable locations.
2. Telecommunications: this is known to be the system or combination of telephones device and networks that transmit telephone signals.
3. A local area network: often referred to as LAN, is a system of networks that covers a smaller area usually within a room, floor, building, or campus.
4. Personal area network: often referred to as PAN, this is a network that covers few distances, usually between wireless devices like PDAs, laptops, and other devices.
5. Metropolitan area network: often referred to as MAN, this is a system of the network that serves quite a larger area, usually between that serve an area of 1 to 30 miles radius. For example, a typical city.
6. Wide area network: often referred to as WAN, this is a system of a large network that covers a large area such as parts of states, many states, countries, and the world at large.
7. Network management: this is defined to be a process of designing, installing, and supporting a computer network, such as computer hardware and software
8. Convergence: this is known to be a connection, combination, and integration of two or more computer technologies in a single device or system for operation.
In a file called amortizedAnalysis.pdf, please provide answers to the following questions: How many cost units are spent in the entire process of performing 40 consecutive append operations on an empty array which starts out at capacity 5, assuming that the array will double in capacity each time a new item is added to an already full dynamic array
Answer:
a
Explanation:
sdfghj
what are the services offered by web-based email?
Answer:
Web based email is a service that allows to access and use electronic mail via web browser.
It allows clients to login into the email software running on a web server to compose, send and receive, delete mails basically.
Discuss the DMA process
Answer:
Direct memory access (DMA) is a process that allows an input/output (I/O) device to send or receive data directly to or from the main memory, bypassing the CPU to speed up memory operations and this process is managed by a chip known as a DMA controller (DMAC).
Explanation:
A defined portion of memory is used to send data directly from a peripheral to the motherboard without involving the microprocessor, so that the process does not interfere with overall computer operation.
In older computers, four DMA channels were numbered 0, 1, 2 and 3. When the 16-bit industry standard architecture (ISA) expansion bus was introduced, channels 5, 6 and 7 were added.
ISA was a computer bus standard for IBM-compatible computers, allowing a device to initiate transactions (bus mastering) at a quicker speed. The ISA DMA controller has 8 DMA channels, each one of which associated with a 16-bit address and count registers.
ISA has since been replaced by accelerated graphics port (AGP) and peripheral component interconnect (PCI) expansion cards, which are much faster. Each DMA transfers approximately 2 MB of data per second.
A computer's system resource tools are used for communication between hardware and software. The four types of system resources are:
I/O addresses Memory addresses. Interrupt request numbers (IRQ). Direct memory access (DMA) channels.DMA channels are used to communicate data between the peripheral device and the system memory. All four system resources rely on certain lines on a bus. Some lines on the bus are used for IRQs, some for addresses (the I/O addresses and the memory address) and some for DMA channels.
A DMA channel enables a device to transfer data without exposing the CPU to a work overload. Without the DMA channels, the CPU copies every piece of data using a peripheral bus from the I/O device. Using a peripheral bus occupies the CPU during the read/write process and does not allow other work to be performed until the operation is completed.
With DMA, the CPU can process other tasks while data transfer is being performed. The transfer of data is first initiated by the CPU. The data block can be transferred to and from memory by the DMAC in three ways.
In burst mode, the system bus is released only after the data transfer is completed. In cycle stealing mode, during the transfer of data between the DMA channel and I/O device, the system bus is relinquished for a few clock cycles so that the CPU can perform other tasks. When the data transfer is complete, the CPU receives an interrupt request from the DMA controller. In transparent mode, the DMAC can take charge of the system bus only when it is not required by the processor.
However, using a DMA controller might cause cache coherency problems. The data stored in RAM accessed by the DMA controller may not be updated with the correct cache data if the CPU is using external memory.
Solutions include flushing cache lines before starting outgoing DMA transfers, or performing a cache invalidation on incoming DMA transfers when external writes are signaled to the cache controller.
Answer:
See explanation
Explanation:
DMA [tex]\to[/tex] Direct Memory Access.
The peripherals of a computer system are always in need to communicate with the main memory; it is the duty of the DMA to allow these peripherals to transfer data to and from the memory.
The first step is that the processor starts the DMA controller, then the peripheral is prepared to send or receive the data; lastly, the DMA sends signal when the peripheral is ready to carry out its operation.
