Which of the following Common Data Network Services is used to send and receive email
internally or externally through an email gateway device?
A.
File services
B.
Mail services
C.
Print services
D.
Client/Server services
Explanation:
This functionality is provided through mail services, this service permits
collaboration between users in an internal and external level. We usually use two protocols,
“SMTP” in port TCP 25 to send the emails and “POP3” in port TCP 110 to receive them. Currently
there is another protocol that is gaining popularity, it is “IMAP4”. Print services are used for printing
documents and file services are used to share and access files and folders inside theinfrastructure.