Answer:
The answer to this question can be given as "The show desktop icon".
Explanation:
To minimize all open windows we use to click on the Show Desktop icon. When we click on this desktop icon it automatically minimize all the open windows that are open on the computer screen. And all the option are not correct that can be described as:
The Start menu is part of the Microsoft windows. Start menu offers a central launching point for system programs and executing other tasks.
The system tray is part of the Window. It is on the Taskbar. It contains miniature icons for easy access to system functions.
That's why the correct answer is "The show desktop icon".
Answer:
int sumid=0; /* Shared var that contains the sum of the process ids currently accessing the file */
int waiting=0; /* Number of process waiting on the semaphore OkToAccess */
semaphore mutex=1; /* Our good old Semaphore variable ;) */
semaphore OKToAccess=0; /* The synchronization semaphore */
get_access(int id)
{
sem_wait(mutex);
while(sumid+id > n) {
waiting++;
sem_signal(mutex);
sem_wait(OKToAccess);
sem_wait(mutex);
}
sumid += id;
sem_signal(mutex);
}
release_access(int id)
{
int i;
sem_wait(mutex);
sumid -= id;
for (i=0; i < waiting;++i) {
sem_signal(OKToAccess);
}
waiting = 0;
sem_signal(mutex);
}
main()
{
get_access(id);
do_stuff();
release_access(id);
}
Some points to note about the solution:
release_access wakes up all waiting processes. It is NOT ok to wake up the first waiting process in this problem --- that process may have too large a value of id. Also, more than one process may be eligible to go in (if those processes have small ids) when one process releases access.
woken up processes try to see if they can get in. If not, they go back to sleep.
waiting is set to 0 in release_access after the for loop. That avoids unnecessary signals from subsequent release_accesses. Those signals would not make the solution wrong, just less efficient as processes will be woken up unnecessarily.
Answer is CPU cache
Explanation: A CPU cache is a special high-speed memory which is smaller and faster, and which helps to store copies of data from main memory location which are often used. It is actually located quite close to the processing core, and is used by the CPU of a computer to save time and energy in accessing data from the main memory.
The way it works is if the processor is either trying to read from or write to a particular location in the main memory, it checks to see if the data from the location is already in a cache, if it is, then it alternatively read from or write to the cache; which faster, instead of the main memory.
Please let me know if this helps.
Answer:C)Extranet
Explanation: Extranet is the network on private basis for sharing of the organizational information with the vendors, employees, customers,suppliers etc. It uses the internet service for the distribution of the data outside of the company in extended form.Electronic data interchange is used for exchanging of large amount of information.
Other options are incorrect because intranet is the internet service which works within enterprise, chaosnet is protocol for transmission of data in full duplex form and ethernet is the communication with the help of protocol in traditional manner.
