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多项选择题What are two major differences between MS-SPRing and SNCP?()

A、 In an MS-SPRing, all paths are protected.

B、 MS-SPRing is always a high-order protection.

C、 A low order circuit cannot be protected by an MS-SPRing.

D、 There is no theoretical limit in the number of nodes in an SNCP ring.

  • B,D
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