| Exam 640-875 | Question id=4869 | Transport Technologies |
Which two statements about Packet over SONET are true?
| A. |
POS is a Layer 2 technology that uses PPP in ATM encapsulation and SONET framing. | |
| B. |
The Layer 2 frame is encapsulated into a generic HDLC header (not Cisco proprietary HDLC) and placed into the appropriate SONET Payload Envelope. | |
| C. |
The FCS field can be set to 16 bits on one end and 32 bits on the other end of a POS connection without causing any connectivity issues. | |
| D. |
The Cisco POS interface supports Cisco HDLC and PPP encapsulation. | |
| E. |
POS can be used in a point-to-point or point-to-multipoint environment. |