Answer:particular layer N, a PDU is a complete message that implements the protocol at that layer. However, when this “layer N PDU” is passed down to layer N-1, it becomes the data that the layer N-1 protocol is supposed to service. Thus, the layer N protocol data unit (PDU) is called the layer N-1 service data unit (SDU). The job of layer N-1 is to transport this SDU, which it does in turn by placing the layer N SDU into its own PDU format, preceding the SDU with its own headers and appending footers as necessary. This process is called data encapsulation, because the entire contents of the higher-layer message are encapsulated as the data payload of the message at the lower layer.
What does layer N-1 do with its PDU? It of course passes it down to the next lower layer, where it is treated as a layer N-2 SDU. Layer N-2 creates a layer N-2 PDU containing the layer N-1 SDU and layer N-2’s headers and footers. And the so the process continues, all the way down to the physical layer. In the theoretical model, what you end up with is a message at layer 1 that consists of application-layer data that is encapsulated with headers and/or footers from each of layers 7 through
Explanation:
Answer:
A. Technicians A and B
Explanation:
When we're talking about generic scanners and about all OBD-II codes, in this case, both technician A and B is the correct answer. Because we can scan all OBD-II codes with a generic scan.
But the technician A just says generic tools must be able to read all generic OBD-II codes and technicians B just says generic scan tools must be able to read manufacture OBD-II code, both are correct.
Answer:
// here is code in C++.
#include <bits/stdc++.h>
using namespace std;
// main function
int main()
{
// variables Declaration and initialization
int no_gallon=16;
int dis=312;
// find the miles per gallon
double mile_gallon=dis/double(no_gallon);
// print the results
cout<<"number of gallons: "<<no_gallon<<endl;
cout<<"distance travel before refueling: "<<dis<<endl;
cout<<"miles per gallon is: "<<mile_gallon<<endl;
return 0;
}
Explanation:
Declare and initialize the number of gallon and distance travel without refueling. Calculate the miles per gallon by dividing distance with number of gallons.Then print the results.
Output:
number of gallons: 16
distance travel before refueling: 312
miles per gallon is: 19.5
Answer: Detect user agent
Explanation:
Although is not recommended to use this method, as is better for usability and accessibility the implementation of feature detection and Progressive enhancement in the modern web, it is possible to detect the browser by sniffing the user agent string to detect which browser is being used. The part you would look to distinguish each browser is found in the Rendering Engine and the values you will get are: Gecko, Webkit, Presto, Blink.
Answer:
application software refers to the programs or series of instructions that allows us to do specific type of task on a personal computer examples word processing programs, spreadsheet programs, presentation programs among others