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Murljashka [212]
3 years ago
10

How many keys are utilized in symmetric cryptography?A. OneB. TwoC. ThreeD. Four

Computers and Technology
1 answer:
eimsori [14]3 years ago
7 0

Answer:

A. One

Explanation:

Symmetric key cryptography makes use of one key. The same key is used for both encryption and decryption. This is different from asymmetric cryptography where separate keys are used for the two operations. Some examples of symmetric cryptography include:

  • Advanced Encryption Standard (AES)
  • Data Encryption Standard (DES)
  • Triple Data Encryption Standard (3DES)
  • Blowfish
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Write a program whose input is a string which contains a character and a phrase, and whose output indicates the number of times
otez555 [7]

Answer:

The program written in python is as follows

def countchr(phrase, char):

     count = 0

     for i in range(len(phrase)):

           if phrase[i] == char:

                 count = count + 1

     return count

phrase = input("Enter a Phrase: ")

char = input("Enter a character: ")

print("Occurence: ",countchr(phrase,char))

Explanation:

To answer this question, I made use of function

This line defines function countchr

def countchr(phrase, char):

This line initializes count to 0

     count = 0

This line iterates through each character of input phrase

     for i in range(len(phrase)):

This line checks if current character equals input character

           if phrase[i] == char:

The count variable is incremented, if the above condition is true

                 count = count + 1

The total number of occurrence is returned using this line

     return count

The main method starts here; This line prompts user for phrase

phrase = input("Enter a Phrase: ")

This line prompts user for a character

char = input("Enter a character: ")

This line prints the number of occurrence of the input charcater in the input phrase

print("Occurence: ",countchr(phrase,char))

4 0
3 years ago
To insert text from a separate file into your Word document
vagabundo [1.1K]
Copy and paste? i think.
3 0
3 years ago
In a @return tag statement the description:
Bond [772]

Answer:

Option A is the correct choice answer for the above question.

Explanation:

The programming concept says that every function returns some value. If the return value is not defined by the user then the function returns the garbage value otherwise it returns the defined value by the user.

The return value is defined by the user with the help of the "return" statement and with the help of the following syntax-

return value; // The return statement.

Hence the option A is right because it satisfies the above concept while the other is not because--

  • Option B states that it must be longer than one line which is not correct.
  • Option C states that it cannot be longer than one line but this line does not make any sense about the returned statement.
  • Option D states that it describes the parameter value which is the wrong definition about the returned statement.
6 0
3 years ago
Read 2 more answers
In a survey of 7200 T.V. viewers, 40% said they watch network news programs. Find the margin of error for this survey if we want
olga_2 [115]

Answer:

Margin of Error=M.E= ± 0.0113

Explanation:

Margin of Error= M.E= ?

Probability that watched network news programs = p = 0.4

α= 95%

Margin of Error =M.E= zₐ/₂√p(1-p)/n

Margin of Error=M.E= ±1.96 √0.4(1-0.4)/7200

Margin of Error=M. E = ±1.96√0.24/7200

Margin of Error=M. E- ±1.96* 0.005773

Margin of Error=M.E= ±0.0113

The Margin of Error is the estimate of how much error is possible as a result of random sampling.

6 0
4 years ago
The level of competition is an important factor for many people when selecting a physical activity.
Art [367]

Answer:

Its false

Explanation:

And this is because, the level of competition will matter when you are doing the mental activity, and in general when you are doing the physical activity then the level of competition never matters. And note that you are doing an activity which is always of one level in case of physical activity, and no sort of games where the competition does matter, and you need to beat the record all the time. You are in this situation challenged physically though always at one level which is fixed and known in advance, and how much exertion your body can withstand, and that is a competition in itself. However, no other competition or level is a factor in this scenario. Though in case of mental activity the requirement can vary at times, and hence requiring the varied level of competition.

6 0
3 years ago
Read 2 more answers
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