Explanation:
URL encoding (percent-encoding) replaces unsafe ASCII characters with a '%' followed by two hexadecimal digits to ensure the URL is valid and transmitted correctly.
What mechanism does an internet email communication layout use to notify a sender that a designated recipient mailbox address is completely invalid or non-existent?
A.Returning an automated 'Hard Bounce' or 'Undelivered Mail' notification error message from the mail server
B.Altering the local browser cache layout automatically
C.Encrypting the sender's system password variables
D.Running automatic DNS reverse lookup queries inside terminal devices
Explanation:
A hard bounce is a permanent delivery failure message indicating that an email address is invalid, typo-ridden, or has been permanently deactivated by the hosting provider.
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