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Sav [38]
4 years ago
15

38. Which of the following best describes why e-mail spoofing is easily executed? a. SMTP lacks an adequate authentication mecha

nism. b. Administrators often forget to configure an SMTP server to prevent inbound SMTP connections for domains it doesn't serve. c. Keyword filtering is technically obsolete. d. Blacklists are undependable.
Computers and Technology
1 answer:
olga55 [171]4 years ago
8 0

Answer:

The correct answer to the following question will be Option A (SMTP lacks an adequate authentication mechanism).

Explanation:

Email spoofing seems to be the manufacture of such a header throughout the expectation that the receiver would be duped into believing the email came from others that is more than just the anticipated source.

  • It is likely since the SMTP doesn't have an authorization method for either the address.
  • While parameters and frameworks for combating email spoofing have already been established for authentication, implementation of those frameworks seems to have been late.
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A new computer workstation has been installed in a small office. the user of the workstation can print a document using a networ
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The printer is setup as a local printer therefore it does not need access to internet to access the local network printer. Once the new workstation is given access to the terminal server used for the printer, it will not need to connect on the internet to print. Now, if the workstation is not able to access the internet it could be potentially due to incorrect configuration of DNS to the workstation or actual issue is within the ISP.
3 0
3 years ago
Write a Python 3 program that prompts the user for 3 postive numbers (or zero) and then adds them together. If the user enters a
Citrus2011 [14]

Answer:

def prompt_number():

   while True:

       number = int(input("Enter a number: "))

       if number >= 0:

           break

       

   return number

   

def compute_sum(n1, n2, n3):

   total = n1 + n2 + n3

   return total

   

n1 = prompt_number()

n2 = prompt_number()

n3 = prompt_number()

result = compute_sum(n1, n2, n3)

print(result)

Explanation:

Create a function named prompt_number that asks the user to enter a number until a positive number or 0 is entered and returns the number

Create a function named compute_sum that takes three numbers, sums them and returns the sum

Ask the user to enter three numbers, call the prompt_number() three times and assign the values

Calculate the the sum, call the compute_sum and pass the numbers as parameters

Print the result

6 0
3 years ago
four quantum numbers that could represent the last electron added (using the Aufbau principle) to the Argon atom. A n = 2, l =0,
marshall27 [118]

Answer:

  • n = 3
  • l  = 1
  • m_l = 1
  • m_s=+1/2

Explanation:

Argon atom has atomic number 18. Then, it has 18 protons and 18 electrons.

To determine the quantum numbers you must do the electron configuration.

Aufbau's principle is a mnemonic rule to remember the rank of the orbitals in increasing order of energy.

The rank of energy is:

1s < 2s < 2p < 3s < 3p < 4s < 3d < 4p < 5s < 4d < 5p < 6s < 4f < 5d < 6p < 7s < 5f < 6d < 7d

You must fill the orbitals in order until you have 18 electrons:

  • 1s² 2s² 2p⁶ 3s² 3p⁶   : 2 + 2 + 6 + 2 + 6 = 18 electrons.

The last electron is in the 3p orbital.

The quantum numbers associated with the 3p orbitals are:

  • n = 3

  • l = 1 (orbitals s correspond to l = 0, orbitals p correspond to l  = 1, orbitals d, correspond to l  = 2 , and orbitals f correspond to  l = 3)

  • m_l can be -1, 0, or 1 (from - l  to + l )

  • the fourth quantum number, the spin can be +1/2 or -1/2

Thus, the six possibilities for the last six electrons are:

  • (3, 1, -1 +1/2)
  • (3, 1, -1, -1/2)
  • (3, 1, 0, +1/2)
  • (3, 1, 0, -1/2)
  • (3, 1, 1, +1/2)
  • (3, 1, 1, -1/2)

Hence, the correct choice is:

  • n = 3
  • l  = 1
  • m_l = 1
  • m_s=+1/2
5 0
3 years ago
Write a JavaScript program to generate the following pattern but the number of rows should be user input.
Nookie1986 [14]

Answer:

Testicles

Explanation:

u sukkk

3 0
3 years ago
Aiming high means???
Llana [10]

Answer:

in what context is it in? it could be aim high for goals set limits that are hard to reach but not impossible

Explanation:

5 0
3 years ago
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