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3 years ago

What are the two atomic operations permissible on semaphores?

Computers and Technology

1 answer:

Sav [38]3 years ago

7 0

Answer:

a. wait , signal

Explanation:

Semaphore is defined as a variable which is a non-negative and also shared between threads. The semaphore is used as a signaling mechanism, as well as a thread which is waiting on the semaphore and can be signaled by some another thread.

Two atomic operations are used by the semaphores. They are 1) wait, and 2) signal for the process synchronization.

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Most of the Desktop games contain a backdoor used to test and update the game.

sveta [45]

A backdoor is a typically covert method of bypassing normal authentication or encryption in a computer, product, embedded device (e.g. a home router), or its embodiment (e.g. part of a cryptosystem, algorithm, chipset, or even a "homunculus computer" —a tiny computer-within-a-computer such as that found in Intel's AMT technology).Backdoors are most often used for securing remote access to a computer, or obtaining access to plaintext in cryptographic systems. From there it may be used to gain access to privileged information like passwords, corrupt or delete data on hard drives, or transfer information within autoschediastic networks.

the answer is True

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3 years ago

Test if the word mold is stored in the variable word. Computer science.

Andre45 [30]

Answer:

word = str("Enter a word: ")

if "mold" in word:

print("Mold is in the variable word.")

else:

print("Mold is not in the variable word.")

5 0

3 years ago

2. Create 4 riddleson keywords which is related to fire wall.

Alona [7]

Answer:

It's been so good to have you as a friend:

2. As sweet and rich as honey-colored sun

3. Slanting steep across a summer lawn,

4. Gilding life with all that love can lend.

5. And now that you yourself have griefs to tend,

6. I want to be the strong and caring one

7. To count to you the lovely things you've done

8. Until these troubles pass and sorrows end.

9. You are so beautiful in form and soul

10. That you bring happiness to all you're near:

11. Just as a sea rose, flowering in mist,

12. Makes a paradise of some bleak shoal,

13. Turning truth to something far more clear,

14. No pain unsoothed or rain-swept cheek unkissed.

good~0~as_a_friend . good_to_have~Slanting~lawn .

It's_been~so_good~as_a_friend .

to_have~griefs_to~form_and_soul

Explanation:

7 0

3 years ago

What is the force that resists the motion of an object through a fluid?

STALIN [3.7K]

Answer:

Friction (drag)

Explanation:

The force resisting motion through a fluid is a type of friction, that is called drag.

4 0

3 years ago

Write a Python program called wdcount.py which uses a dictionary to count the number of occurrences of each word (ignoring case)

Art [367]

The program is an illustration of loops.

<h3>What are loops?</h3>

Loops are program statements used to perform repetition

<h3>The wordcount.py program</h3>

The program written in Python, where comments are used to explain each line is as follows

# This opens the file in read mode

text = open("myFile.txt", "r")

# This creates an empty dictionary

d = dict()

#This iterates through the text

for line in text:

# This splits the line into words, after removing leading & trailing spaces, and newline characters

words = line.strip().lower().split(" ")

# This iterates through all the words

for word in words:

# The following if condition counts the occurrence of each word

if word in d:

d[word] = d[word] + 1

else:

d[word] = 1

#This prints the words and their frequencies, in descending order

for w in sorted(d, key=d.get, reverse=True):

print(w, d[w])