Juniper Exam Questions

What are two reasons for this problem?

A company has installed new voice-over-wireless phones but complains that the voice quality is
very poor.
What are two reasons for this problem? (Choose two.)

A.
The appropriate QoS is not set up.

B.
The SSID “voice” is not set up.

C.
There is a noisy RF environment.

D.
The voice user limit has been reached.