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Question ID 18539	Which three statements about bridge assurance are true? (Choose three.)
Option A	Bridge assurance must be enabled on both ends of a link.
Option B	Bridge assurance can be enabled on one end of a link or on both ends.
Option C	Bridge assurance is enabled on STP point-to-point links only.
Option D	Bridge assurance is enabled on STP multipoint links only.
Option E	If a bridge assurance port fails to receive a BPDU after a timeout, the port is put into a blocking state.
Option F	If a bridge assurance port fails to receive a BPDU after a timeout, the port is put into an error disabled state.
Correct Answer	A,C,E

Explanation Explanation: Bridge Assurance is enabled by default and can only be disabled globally. Also, Bridge Assurance can be enabled only on spanning tree network ports that are point-to-point links. Finally, both ends of the link must have Bridge Assurance enabled. With Bridge Assurance enabled, BPDUs are sent out on all operational network ports, including alternate and backup ports, for each hello time period. If the port does not receive a BPDU for a specified period, the port moves into the blocking state and is not used in the root port calculation. Once that port receives a BPDU, it resumes the normal spanning tree transitions. Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/guid e/cli/CLIConfigurationGuide/SpanningEnhanced.html

Question ID 18540	Drag and drop the IGMPv2 timer on the left to its default value on the right.
Option A	Answer :
Correct Answer	A

Explanation

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