Answer:
return 8 * x
Explanation:
Given
The attached code segment
Required
Which single statement can replace the program body
From calculate(), we have:

The first line (x = x + x) implies that:

So, on the next line; 2x will be substituted for x
i.e.
becomes


So, on the third line; 4x will be substituted for x
i.e.
becomes


In programming: 8x = 8 * x:
This means that: return 8 * x can be used to replace the body
When accurately executed, the only cryptosystem known to be unbreakable is called: "One-time Pad" (Option D)
<h3>What is a Crypto System?</h3>
The one-time pad is a cryptographic approach that cannot be broken but needs the usage of a single-use pre-shared key that is not less than the message being delivered. A plaintext is coupled with a unique secret key in this manner.
It should be emphasized that in cryptography, a cryptosystem is a collection of cryptographic algorithms that are required to perform a certain security function, such as confidentiality. A cryptosystem is often composed of three algorithms: one just for key generation, one for encrypting, and one for deciphering.
Learn more about Crypto System:
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Full Question:
When correctly implemented, what is the only cryptosystem known to be unbreakable?
A) Transposition cipher
B) Substitution cipher
C) Advanced Encryption Standard
D) One-time Pad
Answer:
d. Use a calendar to keep track of assignment due dates
Explanation:
other answers are incorect: just took the quiz, your answer is d.
The answer is :Command prompt
Answer:
routers
Explanation:
<h2><em><u>Fill in the blanks</u></em></h2>
The<u> routers </u> in an internet are responsible for receiving and forwarding packets through the interconnected set of networks and making routing decisions based on knowledge of the topology and traffic/delay conditions of the internet.