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Forced switching, fiber cut switching, manual switching, and exercise switching are in the descending order of priority.
Which of the following is the multiplexing mode of SDH?
The last 256 columns in the OTN frame structure are FEC areas, which are used for forward error correction.
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Both PDH and SDH have globally unified standards.
MAC loopback and PHY loopback are used for fault locating. When the MAC loopback is set to an inloop, you can set the PHY loopback according to the actual situation.
On the NMS, the NE performance monitoring time is set to () minutes and () hours,
When the ACT indicator of an SDH board is off, it indicates that this board has a hardware fault and cannot be used,
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When a bridge uses the IVL learning mode, the entry in the MAC address table is created according to the source MAC address and source port of the data frame. This entry is valid for all VLANs.

Question 169 - H31-311 discussion

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Which of the following statements about the definition of SDH is correct?

A.
A complete standard digital signal hierarchy that provides synchronous digital transmission, multiplexing, and cross-connection
Answers
A.
A complete standard digital signal hierarchy that provides synchronous digital transmission, multiplexing, and cross-connection
B.
A hierarchy of standardized digital signals that can be asynchronously multiplexed
Answers
B.
A hierarchy of standardized digital signals that can be asynchronously multiplexed
C.
A hierarchy of standardized digital signals that can be asynchronously cross-connected
Answers
C.
A hierarchy of standardized digital signals that can be asynchronously cross-connected
D.
A hierarchy that can be used for asynchronous digital transmission
Answers
D.
A hierarchy that can be used for asynchronous digital transmission
Suggested answer: A
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asked 18/09/2024
Mohammedsaleh Ibrahim
42 questions
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