Identify the technique to free up the CPU by allowing device controllers to independently transfer data between the device and main memory.
a. Programmed I/O.
b. Direct Memory Access (DMA).
c. Polling.
d. CPU interrupt.

Answer:

B. - Direct Memory Access (DMA)

Explanation:

...

Direct Memory Access (DMA) is the technique to free up the CPU by allowing device controllers to independently transfer data between the device and main memory. Thus, option B is correct.

Direct memory access is a computer system feature that allows some hardware subsystems to access main system memory without relying on the central processor unit.

Direct memory access (DMA) is the method of transmitting data without using the CPU. It is frequently used to transport data to and from input/output devices. To manage the transfer, a second DMA controller is necessary.

DMA is a mechanism that allows an input/output (I/O) device to transmit or receive data directly to or from main memory, bypassing the CPU to speed up memory operations. A chip known as a DMA controller manages the process (DMAC).

Therefore, option B is correct.

Learn more about the Direct Memory Access, refer to:

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Write short note on:
i) keyboard
ii) Web camera
​

What software programming language was first
used to power the Internet (.com, .net)?

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Draw a system flowchart illustrating the steps performed by an operating system as it executes the instruction to back up a disk on a single-user computer system.

45. _____ is used to create an object. a. Class b. constructor c. User-defined functions d. In-built functions

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When it comes to memory, why is it important to have enough storage space on a hard drive when using many RAM intensive programs?

in media literacy,
how does media influence public? and the press

⚫ analyze or compare the influences of social media
⚫ analyze the ethics or journalist, news outlets, etc​

Saving means

A) Copying data from memory to disk

B) Copying data from disk to
memory

C) Preserving a program

D) Storing data in a program

Comparison
Cloud computing and parallel processors

Run the program and observe the output to be: 55 4 250 19. Modify the numsInsert function to insert each item in sorted order. The new program should output: 4 19 55 250.
#include
#include
using namespace std;
void numsInsert(vector& numsList, int newNum) {
unsigned int i;
for (i = 0; i < numsList.size(); ++i) {
if (newNum < numsList.at(i)) {
// FIXME: insert newNum at element i
break; // Exits the for loop
}
}
// FIXME: change so executes if higher number NOT found
// Change "true" to "i == ??" (determine what ?? should be)
if (true) { // No higher number was found, so append to end
numsList.push_back(newNum);
}
}
void numsPrint(const vector& numsList) {
unsigned int i;
for (i = 0; i < numsList.size(); ++i) {
cout << " " << numsList.at(i) << endl;
}
}

int main() {
vector numsList;
numsInsert(numsList, 55);
numsInsert(numsList, 4);
numsInsert(numsList, 250);
numsInsert(numsList, 19);
numsPrint (numsList);

return 0;
}

List the resulting array after each call of the merge method. Indicate the number of character-to-character comparisons made for each call to merge (line 22 of the merge method at the end of the assignment). Sort the following array of characters into alphabetical order: C Q S A X B T.
01 public static void mergesort (char[] a, int i, int r){
02
03 if (1 >= r) {
04 return;
05 }
06 int middle = (1+r)/2;
07 mergesort(a, l, middle);
08 mergesort(a, middle+1, r);
09 merge(a, l, middle, r);
10 }
11
12 public static void merge (char[] a, int i, int m, int r){
13
14 //copy lower half of the array into b
15 char [] b = new char[m-1+1];
16 for (int i = 0; i <= m-1; i++ ) {
17 b[i] = a (1+i);
18 }
19
20 int i = 0, j m+1, k = 1;
21 while (i <= m-1 && j <= r ) {
22 if (a[j] < b[i]) {
23 a[j];
24 k += 1;
25 j += 1;
26 } else {
27 a[k] b[i];
28 k += 1;
29 i += 1;
30 }
31 }
32 while (i <= m-1) {
33 a[k] b[i];
34 k += 1;
35 i += 1;
36 }
37 while ( j <= r ) {
38 a[k] a[j];
39 k += 1;
40 j += 1;
41 }
42 }

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at is web browser
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Juan is a network administrator and must set up a VPN for his company's network. To allow safe communication, he should

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a. Information and Communication

b. Bio-related and Agricultural

c. Medical

d. Environmental

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g. Energy and Power

h. Nanotechnology

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b) The part of your work area where the computer monitor sits
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e) None of the above
1 BACK

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