CCNP系列認(rèn)證CCNP(642-311)單項(xiàng)選擇題每日一練(2019.01.12)

來源：考試資料網(wǎng)

1 The ONS 15216 is a 32-channel system. The ONS 15216 OADMs are capable of adding and dropping one, two, or four channels. How are the OADMs provisioned to add and drop specific channels?（）

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2 Scrambling of SONET signals is done to （）.

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3 A Channel ID mismatch occurs when （）.

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4 Given the formula: (Fiber Attenuation * Km) + (Splice Attenuation * # of Splices) + (Connector Attenuation * # of Connectors) + (Optical Fiber or OADM) + Buffer(Fiber aging)) With regard to SONET/SDH optical calculations, what will the given formula provide?（）

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5 In order to avoid misconnections due to a failed node in a Bidirectional Line Switched Ring (BLSR), Alarm Indication Signals (AISs) are sent on every channel normally terminating in that node. What is the name of this process?（）

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