CCNP系列認(rèn)證CCNP(642-311)單項(xiàng)選擇題每日一練(2019.01.18)

來源：考試資料網(wǎng)

1 If the dispersion of a given fiber is 17ps/nm*km at 1550 nm and zero at 1310 nm, then what is the accumulated dispersion of an ITU wavelength after it travels 200 km?（）

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2 The ML-series Ethernet card on the ONS 15454 provides up to （）active Q-in-Q instances per card.

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3 SONET Code Violations (CVs) totals in the PM tables are actually an accumulation of the number of （）.

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4 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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5 How is a Thin Film filter fabricated?（）

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