H12-821_V1.0 HCIP-Datacom-Core Technology V1.0 Question and Answers

Preemption mode

Preemption delay

Virtual router priority

Virtual IP address

If a multicast data packet fails the RPF check, the packet must have been received through a sub-optimal interface. However, this interface still receives and forwards the multicast traffic downstream.

IGMP snooping cannot control the scope of multicast traffic flooding on a Layer 2 network.

The source address of a multicast packet is a unicast address.

In multicast transmission, the destination address of a packet can be the unicast address of a host.

After TC-BPDU attack defense function is enabled, you can set the number of times the switch processes TC BPDUs within a certain period

The role of the designated port that is enabled with root protection cannot be changed

If the edge port on the switch enabled with BPDU protection receives RST BPDU, the switch sets the edge port as a non-edge-port and triggers STP calculation

When the designated port enabled with root protection receives optimal RST BPDUs, the port enters the Discarding state and does not forward packets. If the port does not receive optimal RST BPDUs within a certain period of time, the port will automatically restore to the Forwarding state

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