Which three statements are correct about NFSV4?

Which three statements are correct about NFSV4?

A.
It relies on the LOCKD and RPC.STATD daemons to perform file locking.

B.
It uses a single port (2049) for all client/server communications.

C.
The UID and GID for a particular user must be the same on both client and server to avoid file
ownership problems.

D.
It has support for filesystem quotas.

E.
RPC.IDMAPD is used to map a UID to its username and a GID to its group name and vice
versa.

Explanation:
D: rpc.rquotad
Provides quota information for the quota command to display user quotas for remote file systems
and the edquota command to set quotas on remote file systems.
E: Setting up idmapd for static UID/GID mapping is a matter of 6 – 8 (at most) trivial configuration
lines in /etc/idmapd.conf
Incorrect:
not A: The mounting and locking protocols are also integrated into the NFSv4 protocol, so the
lockd and rpc.statd services are also not required.