BDS Industry Standards and Regulations 2

Question 1

What is the DOCSIS specification's requirement for cable modem downstream channel lock time during initialization?

Accepted Answer

The modem must scan and lock a downstream QAM channel within 30 seconds of power-on

Answer

DOCSIS specifications require that a cable modem complete downstream channel acquisition within 30 seconds after applying power, ensuring timely service restoration after power interruptions.

Question 2

What is SCTE-HMS (Headend Monitoring System) used for in cable operations?

Accepted Answer

Providing a standardized SNMP MIB framework for monitoring headend and outside plant equipment health and alarms

Answer

SCTE-HMS defines standard SNMP MIB structures for monitoring cable headend equipment, power supplies, and outside plant devices, enabling interoperable network management across equipment from different vendors.

Question 3

What is the significance of FCC Part 15 regulations for cable broadband equipment?

Accepted Answer

Part 15 sets limits on unintentional RF emissions from electronic devices, including cable modems and headend equipment, to prevent interference with licensed radio services

Answer

FCC Part 15 establishes emission limits for unlicensed electronic devices; cable modems, set-top boxes, and headend equipment must be tested and certified to ensure their unintentional emissions don't interfere with licensed radio users.

Question 4

What does DOCSIS 3.0's channel bonding capability provide compared to DOCSIS 2.0?

Accepted Answer

The ability to combine multiple downstream and upstream channels to achieve higher aggregate throughput

Answer

DOCSIS 3.0 introduced channel bonding, allowing cable modems to simultaneously use up to 8 downstream and 4 upstream QAM channels, multiplying throughput compared to DOCSIS 2.0's single-channel operation.

Question 5

What is the NCTA's role in the US cable broadband industry?

Accepted Answer

To serve as the primary trade association representing cable operators before Congress and the FCC

Answer

The NCTA (National Cable and Telecommunications Association) is the principal trade organization representing US cable operators, advocating for the industry before Congress, the FCC, and in public policy debates.

BDS - Broadband Distribution Specialist Practice Test

BDS - Broadband Distribution Specialist Practice Test

BDS Industry Standards and Regulations 2