Nortel NCSS 920-160 Exam

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Exam : NORTEL 920-160
Title : nncss-communication server(cs)1000 Rls.4.0 Hardware I&M


1. In a CS 1000M Rls. 4.0 installation, installing the four-feed PDU (NT4N49AA) is a two step process. What is the first step?
A. Remove the air intake grill.
B. Test the resistance on the ground.
C. Install the protective/safety ground.
D. Connect power from the power plant to the PDU.
Answer: C

2. When installing an AC power supply in a CS 1000S Rls 4.0 system, according to the procedure for testing ground, what should be the resistance measure?
A. less than 1 ohm
B. less than 0.25 ohms
C. direct short with NO resistance
D. more than 0.25 ohms but NOT exceeding 0.5 ohms
Answer: B

3. After installing the grounding block according to the grounding cabinets or chassis procedure, which task must be performed before power is applied?
A. Test the ground.
B. Connect the power cord and power up.
C. Turn on the circuit breaker to reserve power (battery backup).
D. Place a DO NOT DISCONNECT tag on the ground wire at the service panel.
Answer: A

4. Which is the correct procedure for installing a Logic Return Wire on a CS 1000M Rls 4.0 large system?
A. Connect a #6 AWG wire from the ground source in the service panel to a ground lug on the pedestal.
B. Connect a #8 AWG wire from the ground source in the service panel to a ground lug on the pedestal.
C. Starting at the LRE, connect a #8 AWG wire and route it to the column and up or down the I/O channel area, as appropriate. Then route the wire through the conduit hole in the pedestal to the LRTN on the field wiring block.
D. Starting at the LRE, connect a #6 AWG wire and route it to the column and up or down the I/O channel area, as appropriate. Then route the wire through the conduit hole in the pedestal to the LRTN on the field wiring block.
Answer: D

5. In an AC powered single-column CS 1000M Rls. 0 large system, how is the personal hazard ground wiring routed?
A. Connect a #6 AWG wire from the ground source in the service panel to a ground lug on the pedestal.
B. Connect a #8 AWG wire from the ground source in the service panel to a ground lug on the pedestal.
C. It is routed from the ground source in the service panel to the ground lug on the closet column. Then daisy hain #6 AWG ground wires from It is routed from the ground source in the service panel to the ground lug on the closet column. Then daisy ?hain #6 AWG ground wires from one pedestal to the next.
D. It is routed from the ground source in the service panel to the ground lug on the closet column. Then daisy hain #8 AWG ground wires from It is routed from the ground source in the service panel to the ground lug on the closet column. Then daisy ?hain #8 AWG ground wires from one pedestal to the next.
Answer: A