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.
Answer:
Check the explanation
Explanation:
public String replace(String sentence){
if(sentence.isEmpty()) return sentence;
if(sentence.charAt(0) == ' ')
return '*' + replace(sentence.substring(1,sentence.length()));
else
return sentence.charAt(0) + replace(sentence.substring(1,sentence.length()));
Answer:
a. cryptographic hash function
Explanation:
A cryptographic hash function is a hash function that is suitable for use in cryptography. It is a mathematical algorithm that maps data of arbitrary size to a bit string of a fixed size and is a one-way function, that is, a function which is practically infeasible to invert.
Colour grading is the process that is used to change the visual tone of an image
Answer:
The answer is "Option A and Option C".
Explanation:
In choice a, it is true since a client-server design can be used for REST-application. A user is somebody who needs space and it doesn't deal with storing data on a central computer. A client is someone with the money, and the interface does not. Its server doesn't want to worry regarding core functionality on the ends of the server. The server does not have to know anything at all about the layer of UI used at the end of the server.
In choice c, it is true As just a Web app, services like corporate/employee resources must be organized, and HTTP verbs like the GET, Place, POST, DELETE must be used to modify these. It must be obvious, as a programmer, that what is required is clearly to look only at the interface or HTTP method used.