Which of the following ports does the Simple Mail Transfer Protocol use?
A.
21
B.
25
C.
80
D.
443
Which of the following ports does the Simple Mail Transfer Protocol use?
Which of the following ports does the Simple Mail Transfer Protocol use?
Which of the following ports does the Simple Mail Transfer Protocol use?
Which of the following ports does the Simple Mail Transfer Protocol use?
A.
21
B.
25
C.
80
D.
443