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Aliun [14]
3 years ago
7

A network technician configures a firewall’s ACL to allow outgoing traffic for several popular services such as email and web br

owsing. However, after the firewall’s deployment, users are still unable to retrieve their emails. Which of the following would BEST resolve this issue?A. Allow the firewall to accept inbound traffic to ports 25, 67, 179, and 3389B. Allow the firewall to accept inbound traffic to ports 80, 110, 143, and 443C. Set the firewall to operate in transparent modeD. Allow the firewall to accept inbound traffic to ports 21, 53, 69, and 123
Computers and Technology
1 answer:
Cerrena [4.2K]3 years ago
3 0

Answer: (B) Allow the firewall to accept inbound traffic to ports 80, 110, 143, and 443

Explanation:

Port 80 is used by HTTP, 110 by pop3 to retrieve emails from web servers, 143 by imap for internet messaging and 443 is used for TCP for websites using SSL. So if the firewall is allowed to accept inbound traffic to these ports 80,110,143 and 443 then it would be possible to retrieve emails.

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Write a recursive decent algorithm for a java while statement, a Javas if statement , an logical/mathematical expression based o
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Using the knowledge in computational language in JAVA it is possible to write a code that recursive decent algorithm for a java while statement, a Javas if statement , an logical/mathematical expression.

<h3>Writting the code in JAVA:</h3>

<em>M ---> { S } ' # '</em>

<em>S ---> I | W | A | P | C | G</em>

<em>I ---> ' [ ' E ' ? ' { S } ' : ' { S } ' ] ' | ' [ ' E ' ? ' { S } ' ] '</em>

<em>W --- > ' { ' E ' ? ' { S } ' } '</em>

<em>A --- > lower-case ' - ' E ' ; '</em>

<em>P --- > ' < ' E ' ; '</em>

<em>G ---> ' ' . ' lower case ' ; '</em>

<em>C ---> ' < ' upper case ' ; '</em>

<em>E ---> T { ( ' + ' | ' - ' ) T }</em>

<em>T ---> U { ( ' * ' | ' / ' | ' % ' ) U }</em>

<em>U ---> F ' ^ ' U | F</em>

<em>F ---> ' ( ' E ' ) ' | lower case | digit</em>

<em>Here "lower-case" stands for a single lower-case letter, and "upper-case" stands for a single upper-case letter. For a more colorful grammar (in a slightly different form), see colorful grammar.</em>

<em>This grammar (and the language it defines) may look a little strange, but it was designed to have only single-character tokens. In particular it doesn't have any reserved words (key words), though in a sense the upper-case letters are reserved.</em>

<em>Just to help with understanding, here is the intuitive meaning of each of the above non-terminals:</em>

<em>SYMBOL MEANING</em>

<em>M Main Program</em>

<em>S Statement</em>

<em>I If-Then-[Else] Statement</em>

<em>W While Statement</em>

<em>A Assignment Statement</em>

<em>P Put or Print (integer)</em>

<em>C Print Character</em>

<em>G Get (integer)</em>

<em>E Expression (logical or arith)</em>

<em>T Termi</em>

<em>U </em>

<em>F Factor</em>

See more about JAVA at brainly.com/question/12975450

#SPJ1

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Anwer is <u>True</u>

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