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Katen [24]
3 years ago
10

What are three special purpose devices you might find in a data center and what do they do?

Computers and Technology
1 answer:
Alinara [238K]3 years ago
6 0
The <span>three special purpose devices one might find in a data center and what they do are : 
</span><span>1) Load Balancer</span><span> is a device that acts as a reverse proxy and distributes network or application traffic across a number of. servers.</span><span>
2) Logical Servers are logically separate servers (e.g., a Web server, an email server, and a file server) on the same physical computer. 
</span>3) V<span>irtual Servers ran on the same physical computer </span>that shares hardware and software resources with other operating systems (OS), they are popular in Web hosting environments.
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Which of the following is the correct ordering of operating systems, oldest to newest?
cupoosta [38]

Answer:

Explanation:

The oldest operating system is Version 6 Unix 1975 and the next is 1BSD 1977, then we can find the Apple DOS 1978, in several years we have Mac OS (System 1.0) 1984, in 1985 was born one of the most popular OS in the world Windows 1.0, and Linux version 0.01-0.1 is the newest in 1991.

Nowadays we can find other system like android, windows 10 or Chrome OS.

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2 years ago
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The Transmission Control Protocol (TCP) splits each message into multiple packets. It's possible for packets from the same messa
BARSIC [14]

Answer:

The header file

Explanation:

The 'header' of a packet contains two important information about the data being sent over a network,  number indicating the ordering of all the packets (This ensures that the packets are re-ordered corrected upon arrival at the destination). and information about the total number of packets that the data has been split into, this helps at the destination to know if all packets has arrived, or delayed or lost

5 0
3 years ago
The mathematical constant Pi is an irrational number with value approximately 3.1415928... The precise value of this constant ca
tatiyna

Answer:

I am writing a Python program:

def approxPIsquared(error):

   previous = 8

   new_sum =0

   num = 3

   while (True):

       new_sum = (previous + (8 / (num ** 2)))

       if (new_sum - previous <= error):

           return new_sum

       previous = new_sum

       num+=2    

print(approxPIsquared(0.0001))

Explanation:

I will explain the above function line by line.

def approxPIsquared(error):  

This is the function definition of approxPlsSquared() method that takes error as its parameter and approximates constant Pi to within error.

previous = 8     new_sum =0      num = 3

These are variables. According to this formula:

Pi^2 = 8+8/3^2+8/5^2+8/7^2+8/9^2+...

Value of previous is set to 8 as the first value in the above formula is 8. previous holds the value of the previous sum when the sum is taken term by term. Value of new_sum is initialized to 0 because this variable holds the new value of the sum term by term. num is set to 3 to set the number in the denominator. If you see the 2nd term in above formula 8/3^2, here num = 3. At every iteration this value is incremented by 2 to add 2 to the denominator number just as the above formula has 5, 7 and 9 in denominator.

while (True):  This while loop keeps repeating itself and calculates the sum of the series term by term, until the difference between the value of new_sum and the previous is less than error. (error value is specified as input).

new_sum = (previous + (8 / (num ** 2)))  This statement represents the above given formula. The result of the sum is stored in new_sum at every iteration. Here ** represents num to the power 2 or you can say square of value of num.

if (new_sum - previous <= error):  This if condition checks if the difference between the new and previous sum is less than error. If this condition evaluates to true then the value of new_sum is returned. Otherwise continue computing the, sum term by term.

return new_sum  returns the value of new_sum when above IF condition evaluates to true

previous = new_sum  This statement sets the computed value of new_sum to the previous.

For example if the value of error is 0.0001 and  previous= 8 and new_sum contains the sum of a new term i.e. the sum of 8+8/3^2 = 8.88888... Then IF condition checks if the

new_sum-previous <= error

8.888888 - 8 = 0.8888888

This statement does not evaluate to true because 0.8888888... is not less than or equal to 0.0001

So return new_sum statement will not execute.

previous = new_sum statement executes and now value of precious becomes 8.888888...

Next   num+=2  statement executes which adds 2 to the value of num. The value of num was 3 and now it becomes 3+2 = 5.

After this while loop execute again computing the sum of next term using       new_sum = (previous + (8 / (num ** 2)))  

new_sum = 8.888888.. + (8/(5**2)))

This process goes on until the difference between the new_sum and the previous is less than error.

screenshot of the program and its output is attached.

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3 years ago
After reading the article, "The Impact of Technology", answer the following question.
kolezko [41]

Answer:

Technology has played a huge a part in terms of progressing the economies of different countries. Technology has brought into action the globalized solutions to bring people across the globe together.

Regardless of the benefits, this technology has caused people to socialize less in real life. They have found ways to entertain themselves through technology and that has effected their social interactions greatly.

3 0
3 years ago
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