[多选]
Click the Exhibit button. The exhibit shows a 15454/15216 DWDM system and alarm indications. What are two possible sources of trouble shown in the system?（） (Choose two.)

A . fiber failure between Sites A and d
B . EDFA failure at Site A (clockwise direction)
C . EDFA failure at Site C (clockwise direction)
D . 15216 multiplexer at Site A (counter-clockwise direction)
E . OADM pass-through (West "OUT") failure at site D (clockwise)
F . wavelengths 1 and 3 transmitter failures at Site A (clockwise direction)

Which of the following file should be configured for dynamic service registration？（） LISTENER.ORA。 SQLNET.ORA。 INIT.ORA。 TNSNAMES.ORA。抗泡剂心境障碍，一般具有以下特点（）发作一次，加重一次，残留阴性症状。一次发作，永不缓解。反复发作，从无缓解期。反复发作，大多数能缓解。周期性发作，间歇期间精神状态较差。工作客流和非工作客流，以及市区客流和郊区客流各有什么特点？ Given： Which exception or error will be thrown when a programmer attempts to run this code？（） java.lang.StackOverflowError。 java.lang.IllegalStateException。 java.lang.ExceptionInInitializerError。 java.lang.ArrayIndexOutOfBoundsExceptio。

Click the Exhibit button. The exhibit shows a 15454/15216 DWDM system and alarm indications. What are two possible sources of trouble shown in the system?（） (Choose two.)

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[多选] Click the Exhibit button. The exhibit shows a 15454/15216 DWDM system and alarm indications. What are two possible sources of trouble shown in the system?（） (Choose two.)

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[多选]
Click the Exhibit button. The exhibit shows a 15454/15216 DWDM system and alarm indications. What are two possible sources of trouble shown in the system?（） (Choose two.)