Exam 350-601 topic 1 question 157 discussion

A is correct. The Data Center Bridging Exchange Protocol (DCBXP) is an extension of LLDP. It is used to announce, exchange, and negotiate node parameters between peers. DCBXP parameters are packaged into a specific DCBXP TLV. This TLV is designed to provide an acknowledgement to the received LLDP packet. DCBXP is enabled by default, provided LLDP is enabled. DCBXP is disabled on ports where LLDP transmit or receive is disabled. https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/layer2/503_n2_1/b_Cisco_n5k_layer2_config_gd_rel_503_N2_1/b_Cisco_n5k_layer2_config_gd_rel_503_N2_1_chapter_01110.html

A is correct vHBA A vHBA can be a source for either an Ethernet or Fibre Channel monitoring session, but it cannot be a source for both simultaneously. When a VHBA is set as the SPAN source, the SPAN destination only receives VN-Tagged frames. It does not receive direct FC frames. Cisco UCS 6200 supports traffic monitoring from a vHBA in the transmit direction. However, Cisco UCS 6454 Fabric Interconnects do not support traffic monitoring traffic from a vHBA in the transmit direction For Cisco UCS 6300 Fabric Interconnects, the destination port must also be an unconfigured physical Ethernet port. For Cisco UCS 6332 and Cisco UCS 6332-16UP Fabric Interconnects, you cannot choose Fibre Channel destination ports, but can use unconfigured ethernet ports as a destination for FC traffic monitoring sessions.

A is correct.

i think A is correct

Answer should be D. DCBXP is enabled as soon as LLDP feature is turned on. No need to enable LLDP on the interfaces of the switches. This is gotten from the official guide : DCBX runs on the physical Ethernet link between the Cisco Nexus device and the CNA. By default, DCBX is enabled on Ethernet interfaces. When an Ethernet interface is brought up, the switch automatically starts to communicate with the CNA. During the normal operation of FCoE between the switch and the CNA, DCBX provides link-error detection. DCBX is also used to negotiate capabilities between the switch and the CNA and to send configuration values to the CNA." Chapter 8 Implement FCOE Unified Fabric, Key Topic : Data Center Bridging Exchange (DCBX).