Which of the following are true for CIFS? (Choose TWO correct answers.)

Which of the following are true for CIFS? (Choose TWO correct answers.)
A . Filenames can be in any character set.
B . Filenames can have a maximum length of 127 characters.
C . Unlike SMB, CIFS is not optimized for slow network connections.
D . Opportunistic Locks are supported.

Answer: A, D