Cisco CCIE Service Provider Cable Recertification Set 5

Determine the minimum upstream RF bandwidth and modulation capable of supporting concurrent system traffic resulting from 100 G711 telephone circuits with 0.137 erlangs, and 30 simultaneous data users with an average Best Effort rate of 24 Kbs. Assume G711 requires 110 Kbs per voice circuit. (Multiple answer)

What is the nominal bandwidth of a DOCSIS 2.3 Mbps QPSK or 4.5 Mbps 16-QAM digitally modulated carrier?

What is the expected RF signal level range for an upstream DOCSIS 16-QAM digitally modulated carrier when measured at Point K in the figure?

What is the correct DOCSIS initialization sequence for cable modems to come online?

At what level relative to adjacent channel analog visual carrier levels should a DOCSIS 64- or 256-QAM digitally modulated carrier be operated?

When designing a 2-way data system, the most common bandwidth constraint that must be overcome is:

What is the recommended minimum carrier-to-noise ratio for upstream DOCSIS QPSK and 16-QAM digitally modulated carriers?

An old head-end hub site is inherited that services 30,000 HHP and the DOCSIS cable modem services must be made operational. There are 15 fiber nodes serving the area combined 4:1. The HFC is a 2-way 550 MHz
system but is old and leakage has been found measuring 150 uV/m in multiple locations. Extensive ingress has also been found in the return path on the analyzer on each return leg. Given the above conditions it would be best to design the network to use:

What is the expected RF signal level range for a downstream DOCSIS digitally modulated carrier when measured at Point K in the figure?

While entering commands on a console, the break key is pressed accidentally and the router reboots. What action could disable this problem?