Using a database of precomputed hashes from sequentially calculated passwords called a rainbow table, an attacker can simply look up a hashed password and read out the text version. Each column in the rainbow table uses a different reduction function. The function of the table is <span>reversing cryptographic hash functions. </span>
Explanation:
To understand how this program is working let us print the variable value at different stages of the program so that we can understand how it is working.
Intitally, value=10 when it was declared.
Then we added 5 and it become value=15
then we used fork() function which creates a parent(orignal) and child(duplicate)
When fork() succeeds it returns the child pid to parent and returns 0 to the child. As you can see (pid > 0) condition is always true therefore the parent pid value becomes 35 ( 15+20) and the child pid value becomes 0.
#include <stdio.h>
#include <unistd.h>
int main( ) {
int value = 10;
printf("%d\n",value);
int pid;
value += 5;
printf("%d\n",value);
pid = fork( );
printf("%d\n",pid);
if (pid > 0 )
{
value += 20;
}
printf("%d\n",value);
return 0;
}
Output:
10 (initial value)
15 (modified value)
5343 (pid when fork is used)
35 (final modified value)
0 (child value)
15 (the parent value when fork was used)
Answer:
C
Through the target's web server's log.
Explanation:
A web server is a server software or a hardware that is fully dedicated to the running of that software. It satisfies a user's request on the www that is the World Wide Web. A web server can, contain just one or more websites.
It processes incoming network requests over HTTP and several other related protocols.
It also stores the webpages the user have visited in the past. Tracking the target's web server to know what enter or left can expose the hacker that is scanning a user's web server.
Answer:
The program displays 5 4 3 2 1 and then raises an Array Index Out Of Bounds Exception.
Explanation:
A sample of code output is attached.
The code snippet contain xMethod that takes an array and array length as argument.
In the given snippet, the array {1, 2, 3, 4, 5} and length (5) is passed as argument to the method.
First the method display the element of the array in reverse order
System.out.print(" " + x[length - 1]);
and then the method call itself again. This displays
5 from x[4]
4 from x[3]
3 from x[2]
2 from x[1]
1 from x[0]
but after displaying 1, when it tries to call the method again, an array index out of bound exception is thrown because it will try accessing an element from the array when it is already exhausted.
Answer:
look up ultrasurf and just follow the thingy and it will download a vpn ive had it on my computer for a fat min
Explanation:
