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3 years ago

Which tcp/udp port does the dns service use to communicate?

1 answer:

7 0

Port 53

Man sometimes the answer minimum of 20 to explain is a bit unnecessary.
It's port 53 what else do you need to know?

You might be interested in

Explain the Decision making statement

Blizzard [7]

Answer:

Decision making structures require that the programmer specify one or more conditions to be evaluated or tested by the program, along with a statement or statements to be executed if the condition is determined to be true, and optionally, other statements to be executed if the condition is determined to be false.

4 0

3 years ago

Describe the difference between the while loop and the do-while loop.

Karo-lina-s [1.5K]

Answer:

The difference between While loop and Do - While loop are explained below.

Explanation:

While loop : It is a looping procedure in which the statements inside the while loop are executed depending on the condition outside the while before starting the loop.
If the condition is true then the code inside loop is executed otherwise not.
Do - While loop: It is a looping procedure in which the statements inside the loop get executed and then the condition at the end of the loop is checked.
This means even the condition is fails the statements inside the loop are executed once.
Do while loop name itself suggests that "do the while and then check the condition".

7 0

3 years ago

3.14 LAB: Simple statistics for Python

Ad libitum [116K]

Answer:

Following are the correct python code to this question:

n1 = float(input('Input first number: '))#input first number

n2 = float(input('Input second number: '))#input second number

n3 = float(input('Input third number: '))#input third number

n4 = float(input('Input fourth number: '))#input fourth number

average = (n1+n2+n3+n4)/4 #calculate input number average

product = n1*n2*n3*n4 # calculate input number product

print('product: {:.0f} average: {:.0f}'.format(round(product),round(average))) #print product and average using round function

print('product: {:.3f} average: {:.3f}'.format(product,average)) #print product and average value

Output:

Please find the attachment.

Explanation:

The description of the above python code can be defined as follows:

In the above python program four variable "n1, n2, n3, and n4" is defined, in which we take input from the user end, and in these user inputs we use the float method, that converts all the input value in to float value.
In the next step, two variable average and product are defined, that calculate all input numbers product, average, and hold value in its variable.
In the last line, the print method is used, which prints its variable value by using a round and format method.

8 0

4 years ago

Implementations <br> in c++ programming when finding lcm and gcd in c++

vazorg [7]

Answer:

#include<iostream>

using namespace std;

int lcm(int m, int n) {

int a;

a = (m > n) ? m: n;

while (true) {

if (a % m == 0 && a % n == 0)

return a;

++a;

}

int gcd(int m, int n) {

int r = 0, a, b;

a = (m > n) ? m : n;

b = (m < n) ? m : n;

r = b;

while (a % b != 0) {

r = a % b;

a = b;

b = r;

}

return r;

}

int main(int argc, char **argv) {

cout << "Enter the two numbers: ";

int m, n;

cin >> m >> n;

cout << "The LCM of two numbers is: " << lcm(m, n) << endl;

cout << "The GCD of two numbers is: " << gcd(m, n) << endl;

return 0;

}

Explanation:

7 0

3 years ago

Write a program with a function that accepts a string as an argument and returns the number of uppercase, lowercase, vowel, cons

diamong [38]

Answer:

Explanation:

The following code is written in Python. It is a function called checkString that takes in a string as an argument and loops through each char in that string and checking to see if it is lowercase, uppercase, vowel, consonant, or punctuations. It adds 1 to the correct variable. At the end of the loop it prints out all of the variables. The picture below shows a test output with the string "Brainly, Question."

def checkString(word):

uppercase = 0

lowercase = 0

vowel = 0

consonants = 0

punctuation = 0

vowelArray = ['a', 'e', 'i', 'o','u', 'y' ]

consonantArray = ['b', 'c', 'd', 'f', 'g', 'h', 'j', 'k', 'l', 'm', 'n', 'p', 'q', 'r', 's', 't', 'v', 'w', 'x', 'y', 'z']

punctuationArray = ['.', '!', '?', ',', ';', '(', ')']

for char in word:

if char.isupper():

uppercase += 1

else:

lowercase += 1

if char.lower() in vowelArray:

vowel += 1

elif char.lower() in consonantArray:

consonants += 1

if char in punctuationArray:

punctuation += 1

print('Uppercase: ' + str(uppercase))

print('Lowercase: ' + str(lowercase))

print('Vowels: ' + str(vowel))

print('Consonants: ' + str(consonants))

print('Punctuations: ' + str(punctuation))

8 0

3 years ago