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Answer:
There could be a collision if a hidden node problem occurs.
Explanation:
CSMA/CA(carrier sense multiple access/ collision avoidance) is a multiple access method in wireless networking, that allows multiple node to transmit. Collision avoidance of this method is based on preventing signal loss or downtime as a result of collision of transmitting multi signals.
If a node at step 4(transmit frame) sends the first frame, the node still needs to send a RTS(request to send) and to receive a Clear to send (CTS) from the WAP, the is to mitigate the issue of hidden node problem as all frame are treated as unit, so other listening nodes, not detected would seek to connect and transmit as well.
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Answer:
Following are the program of C++
#include <iostream> // header file
#include <iomanip> // header file
using namespace std; // namespace
int main() // main function
{
int grade[5],k; // declaration of array and variable
for (int i = 0; i< 5; i++) // iterating over the loop
{
cout << "Enter grade ";
cin >> grade[i]; // read the grade by the user
}
k=0;
while(k<5) // iterating over the loop
{
cout << "Grade #" << k + 1 << ": ";
cout << grade[k] << endl; // display the grade
k++; // increment of i
}
}
Output:
Enter grade 45
Enter grade 5
Enter grade 8
Enter grade 6
Enter grade 7
Grade #1: 45
Grade #2: 5
Grade #3: 8
Grade #4: 6
Grade #5: 7
Explanation:
The description of the program is given below.
- Declared an array "grade" of int type
- Read the grade elements by the user using the for loop
- finally, display the grade in the given format which is mention in the question.
