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You have recently installed a new firewall on network. After the firewall is installed, you review the firewall logs and notice that port 25 incoming traffic is blocked. Which of the following protocol is impacted with this?

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ijeggs

Answer:

Options not provided, but the correct answer is

The Simple Mail Transfer Protocol (SMTP)

Explanation:

This is the protocol used for email delivery from an email client, such as outlook  to an email server or when email is delivered between two email servers.  The SMTP uses port 25, so when a review of firewall logs reveal a problem with port 25, then it is the SMTP protocol that will be impacted

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