Nokia
4A0-105 · Question #130
Which of the following are true when ports are configured with the IEEE 802.3ah Loopback Control feature? (Choose 3)
The correct answer is A. The loopback control PDU instructs the remote port to enter loopback mode. D. Both ports must still send Information PDUs to avoid going back to discovery mode. F. All packets, exceptfor information PDUs,are looped back. See the full explanation below for the reasoning.
Question
Which of the following are true when ports are configured with the IEEE 802.3ah Loopback Control feature? (Choose 3)
Options
- AThe loopback control PDU instructs the remote port to enter loopback mode.
- BPutting a port in loopback does not affect customer data flow
- CBoth ports must rediscover the OAM capabilities of each other once the port is put back into
- DBoth ports must still send Information PDUs to avoid going back to discovery mode.
- EWhen a port is in loopback mode, service mirroring will still work if it is a mirror-source or mirror-
- FAll packets, exceptfor information PDUs,are looped back.
How the community answered
(57 responses)- A84% (48)
- B5% (3)
- C9% (5)
- E2% (1)
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