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oee [108]
3 years ago
9

In step 4 of the CSMA/CA protocol, a station that successfully transmits a frame begins the CSMA/CA protocol for a second frame

at step 2, rather than at step 1. What rationale might the designers of CSMA/CA have had in mind by having such a station not transmit the second frame immediately (if the channel is sensed idle?
Computers and Technology
1 answer:
DerKrebs [107]3 years ago
5 0

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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Which function would you use to make sure all names are prepared for a mailing label? TODAY UPPER PROPER LOWER
Aleonysh [2.5K]

Answer:

Proper.

Explanation:

5 0
2 years ago
Which line of code will print I can code on the screen?
KIM [24]

Answer: print("I can code")

Explanation:

luckily im a coder

5 0
3 years ago
he timing device in an automobile’s intermittent wiper system is based on an RC time constant and utilizes a 0.500-μF capacitor
Tatiana [17]

Answer:

4000k-ohm to 10,000k-ohm

Explanation:

As we know that time constant for an RC circuit is t=RC

Putting the values of t we can get the range of varaiable resistor as;

t=RC

Putting t=2 we get the first value of the range for the variable resistor

2=R*0.500*10^-6

R=2/(0.500*10^-6)

R=4*10^6

R=4000k-ohm

Now putting t=5 we get the final value for the range of variable resistor

t=RC

5=R*0.500*10^-6

R=5/(0.500*10^-6)

R=10*10^6

R=10,000k-ohm

So variable resistance must be made to vary in the range from 4000k-ohm to 10,000k-ohm

5 0
3 years ago
Type the correct answer in the box. Spell all words correctly. How is it possible to access data from any location? Storing data
romanna [79]

Answer:

optical

Explanation:

The earliest of these was the magnetic device. Computer systems began with magnetic storage in the form of tapes (yes, just like a cassette or video tape). These graduated to the hard disk drive and then to a floppy disk.

5 0
3 years ago
Write a c++ program that accepts a string from the user and then replaces all occurrences of the letter e with the letter x
mixer [17]

Answer:

#include <iostream>

using namespace std;

int main()

{

   string str;

   cout<<"Enter the string: ";

   cin>>str;

   for(int i=0;str[i]!='\0';i++){

       if(str[i]=='e'){

           str[i]='x';

       }

   }

   cout<<"the string is: "<<str<<endl;

  return 0;

}

Explanation:

First, include the library iostream for using the input/output instructions.

Create the main function and declare the variables.

Then, use the cout instruction and print the message on the screen.

cin store the string enter by the user into a variable.

After that, take a for loop and if-else statement for checking the condition if the string contains the 'e', then change that alphabet to 'x'.

This process continues until the string not empty.

Finally, print the updated string.

6 0
3 years ago
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