Questions about NI 2954R local-oscillator

To who it may concern

Currently, we are using NI USRP 2954 R for Wi-Fi-related research. Based on the performance of the system, we have two questions about the USRP:

1. if the USRP uses homodyne receiver architecture (the local oscillator signal is used to both generate tones and as a mixer signal)?
2. if the LO is phase-continuous when switching its role from transmitting to receiving and vice-versa?

I would appreciate your help with these questions.