Answer:
The answer is "2".
Explanation:
In the given question some information is missing, that is "The propagation time for satellite to earth" which is "270 milliseconds" so, the description to this question can be defined as follows:
Given values:
Bandwidth = 64 kbps
Data frames = 512 bytes
Propagation Time (tp ) =270 ms
Change Bandwidth kbps to bps:
1 kb= 1024 bytes
calculated bandwidth= 64 kbps = 64×1024 bps = 65536 bps
1 bytes = 8 bits
512 bytes = 512 × 8 = 4096 bits
Frame length = 4096 bits
Formula
Transmission time (Tt) = Frame length /Bandwidth
Window size = 1+2a
where a = Propagation time/Transmission time
Calculate Transmission time:
Transmission time (Tt) = 4096 / 65536
Transmission time (Tt)= 625 m.sec
Calculate Window size:
Window size = 1+2(270/625)
Window size
= 1+2(0.432)
Window size
= 1+0.864
Window size = 1.864
Window size
= 2
Answer:
We can protect the server from the modification by using the non root users in many ways as follows:
- By modifying the PHP settings in the server and by using the configured file as, the configuration of the file is basically depend upon the linux and the PHP script.
- By disabling the URL from the function of file handling that basically accept the local file as the parameters but it also accept the URL. It can even now get to outer destinations by utilizing fsockopen or any of the CURL capacities.
- The safe mode of PHP is presumably probably the best alternative to secure your server however it very well may be prohibitive. Whenever initiated, experimental mode averts access to records not claimed by Apache and access to condition factors and execution of double projects are likewise debilitated.
Answer:
See explaination
Explanation:
#include <iostream>
using namespace std;
string * createAPoemDynamically()
{
string *p = new string;
*p = "Roses are red, violets are blue";
return p;
}
int main() {
while(true) {
string *p;
p = createAPoemDynamically();
if (!p)
{
cout << "Memory allocation failed\n";
}
cout<<*p<<"\n";
// assume that the poem p is not needed at this point
//delete allocated memory
delete p;
}
}
Answer:
Address buses are made up of a collection of wires connecting the CPU with main memory that is used to identify particular locations (addresses) in main memory. The width of the address bus (that is, the number of wires) determines how many unique memory locations can be addressed.
Explanation:
