Answer:
This is the complete correct program:
#include <stdio.h>
#include<sys/types.h>
#include<unistd.h>
int value = 128;
int main()
{
pid_t pid;
pid=fork();
if (pid==0) /* child process */
{
value +=8;
return 0; }
else if (pid > 0) {/* parent process */
wait (NULL);
printf ("PARENT: value =%d\n" ,value); /* LINEA */
return 0;
}
}
The output of the LINE A is:
PARENT: value = 128
Explanation:
The fork() function used in the program creates a new process and this process is the child process. The child process is same as the original process having its own address space or memory.
In the child process the value of pid is 0. So the if condition checks if pid==0. Then the child process adds 8 to the value of its variable according to the following statement
value +=8;
Now the original process has value = 128. In else if part the parents process has the value of pid greater than zero and this portion of the program is of the parent process :
else if (pid > 0)
{ wait (NULL);
printf ("PARENT: value =%d\n" ,value);
return 0; }
So the value 128 is printed at the end in the output.
wait(NULL) is used to wait for the child process to terminate so the parent process waits untill child process completes.
So the conclusion is that even if the value of the variable pid is changed in the child process but it will not affect the value in the variable of the parent process.
Answer:
Application Server
Explanation:
The Application Server is a component in computer engineering that presents the application logic layer in a three-tier architecture.
This functionality allows client components to connect with data resources and legacy applications.
In this process of interaction, the Application Server runs the program code from Tier 1 - Presentation, through Tier 2 - Business Logic to Tier 3 - Resources, by forcing through the business processes.
Answer:
False
Explanation:
Outsourcing and telecommuting are the trends related to presence of growing technology within the economy allowing various services to be outsourced to people who are more of an expert when it comes to handling those procedures.
Answer:
False
Explanation:
When an employee becomes the one responsible for the security of His own computer then the scenario does not define Network security. Network security is a usage of hardware and related software to provide protection to the underlying network architecture from unauthorized access and other anomalies related to networks.
Answer:
True
Explanation:
If s=abcd is a string defined over {a,b,c,d}, it corresponds to a regular expression which can be represented using a finite automata. Then the reverse of the string essentially corresponds to another finite automata where the starting state becomes the accepting state and vice versa.Moreover all the directions of state transitions will be reversed for each of the transitions in the original automata.
With these modifications, the new finite automata will accept a string which is reverse of the original string ,namely, dcba and this string will ne part of the reverse language.
