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2. Question: 1 According to the exhibit, What is the maximum number of external alarm cables used to monitor the BTS environment? A. 2 B. 3 C. 4 D. 5 Answer: A Question: 2 In which order should the modules represented in the DDU be switched on during the procedure of powering on the GSM BTS 18020? A. ECU, Digital/RICO, RF0, RF1 B. Digital/RICO, RF0, ECU, RF1 C. RF0, RF1, ECU, Digital/RICO D. ECU, RF0, RF1, Digital/RICO Answer: A Question: 3 Using the information in the exhibit: Page 1 of 32

3. Calculate the ground resistance for a fully equipped GSM BTS 18010? A. 604kg/m B. 725kg/m C. 800kg/m D. 931kg/m Answer: D Question: 4 What is the effect in the BTS when the Circuit Breakers (CB), CB1 and CB3, are off? A. Heater 1 is off. B. Rectifiers in slots 1-2 are off. C. The entire heating system is off. D. Only rectifiers 3 and 4 are operational. Answer: D Question: 5 Page 2 of 32

4. In which order should the Circuit Breakers (CBs) in the exhibit be switched on when powering on the GSM BTS 18010? A. CB0 / CB1 / CB2 / CB3 B. CB1 / CB0 / CB2 / CB3 C. CB1 / CB3 / CB0 / CB2 D. CB3 / CB1 / CB0 / CB2 Answer: C Question: 6 Why is the GSM BTS 18020 secured on the Nortel plinth? A. in case of seismic activity B. in case of greenfield installation C. in case of BTS S8000 swap D. in case of roof terrace installation Answer: C Question: 7 How is the GSM BTS 18020 secured to the floor? A. with two M10 bolts B. with two M12 bolts C. with four M10 bolts D. with four M12 bolts Answer: C Page 3 of 32

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