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Alchen [17]
3 years ago
14

If we can lock a file, we can solve the race condition problem by locking a file during the check-and-use window, because no oth

er process can use the file during the time window. Why don’t we use this approach to solve the race condition problems discussed in this chapter?
Computers and Technology
1 answer:
yKpoI14uk [10]3 years ago
5 0

Answer:

A file can only be locked out to other users or processes only if it's already open, meaning it's in use as a resource during the time window and therefore it's impossible solving the race condition problem by locking the file during the check-and-use window.

Hence, during the check-and-use process, it's impossible to lock a file.

In conclusion, any lock created can be ignored by the malicious process.

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Social media applications' main purpose is to allow users to watch movies and TV shows, listen to music, and read books online.
Novosadov [1.4K]

Answer: I dont really know but im guessing it depends on the type of assignment you have. im thinking True.

Explanation:

4 0
3 years ago
Which wireless communication is typically limited to six feet of distance?
Tcecarenko [31]

Answer:

Bluetooth is a wireless communication    is  typically limited to   six feet distances

Explanation:

Bluetooth is one type of communication maximum it covers  10 meters to 30 meters.   but it is one to one communication made for data transactions.  After  25 meters of coverage on communication will be very slow on data transactions. But Bluetooth has also had a limitation.

IR.  It is one of communication where infrared technology used. It is like face to face communication and speed of data transaction limited and it is also one to one communication made for data transactions. Communication paired and covered very little distances.

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RFID is one of communication and it is powerful to cover more areas with multiple connections at the same time. It has a limitation  in distance and it covers  like a net with a specific distance  

4 0
3 years ago
The following equations estimate the calories burned when exercising (source): Men: Calories = ( (Age x 0.2017) — (Weight x 0.09
sammy [17]

In python:

age = float(input("How old are you? "))

weight = float(input("How much do you weigh? "))

heart_rate = float(input("What's your heart rate? "))

time = float(input("What's the time? "))

print("The calories burned for men is {}, and the calories burned for women is {}.".format(

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   ((age * 0.074) - (weight * 0.05741) + (heart_rate * 0.4472) - 20.4022) * (time / 4.184)))

This is the program.

When you enter 49 155 148 60, the output is:

The calories burned for men is 489.77724665391963, and the calories burned for women is 580.939531548757.

Round to whatever you desire.

6 0
3 years ago
A DTP firm has published and printed flyers for an upcoming fundraising event. In which section of the flyer would you find the
Annette [7]
Typically the contact details for the firm would be at the bottom of the flyer.

This is to allow room for the main event itself to be advertised in top and central area of the flyer real-estate.
7 0
3 years ago
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