Something about exams at school 644-344

Hello, everyone! My name is Jacky. I am very happy to share my life here with you all.
I married my wife a year ago, before married, we described a nice future with enough salary and happy life, so she decided to study for test 644-344 question SP Video Phase III Wireline certification which can help her with high salary. However, terrible life came to me from then on.
1.What is the target optical input level to a Cisco node?

A. -17dBm

B. 0 dBm

C. +3dBm

D. +17dBm

Answer: B

2.In engineering the upstream signal path, why is it desirable to ensure that all Cable Modems transmit at
a high RF signal level?

A. Most Cable Modems perform better at higher output levels

B. The Cisco BDR (Baseband Digital Reverse) transmission system cannot operate with low RF input
levels

C. A high RF level will ensure that the modem signals will have a high Carrier-to-Noise Ratio as they
leave the potentially noisy subscnber's home
D. This will speed up the modem initialization process

Answer: C

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