CBNT study plan
CBNT · Give each week a clear focus.
8 weeks · About 6 hours per week
Broadband network fundamentals and architecture
Diagram the end-to-end HFC architecture from headend to subscriber drop, labeling each active and passive element
Explain the role of the CMTS, combiner, and edge QAM in delivering data and video services
Distinguish DOCSIS upstream and downstream frequency ranges and justify why upstream is more noise-sensitive
Calculate signal loss across a simple cascade of splitters and taps given per-device loss values
Your checkpoint
A one-page hand-drawn or digital HFC topology diagram with a labeled component list and a worked loss-budget calculation
Broadband network fundamentals and architecture
Compare fiber-to-the-home, HFC, and fixed wireless access on capacity, latency, and upgrade path
Describe how nodes, amplifiers, and power supplies are placed to balance signal level and reliability
Identify the three most common single points of failure in a distribution plant and state a mitigation for each
Map each architecture term to where it appears on a real utility pole or pedestal
Your checkpoint
A comparison table of three access architectures plus a written list of five failure points with mitigations
Coaxial and fiber cable installation and testing
Demonstrate correct preparation of coaxial cable ends including stripping dimensions and connector seating
Explain the difference between compression and crimp connectors and when each is acceptable
Describe bend radius, pulling tension, and support spacing rules for coaxial and fiber runs
Identify the safety hazards of working near energized plant and overhead lines
Your checkpoint
A step-by-step connector installation checklist with stripping dimensions and a photo-free sketch of a properly seated connector cross-section
Coaxial and fiber cable installation and testing & RF signal measurement, leakage and signal quality
Perform a pass/fail interpretation of a TDR or sweep test result and explain what a reflection indicates
Explain insertion loss versus return loss and give typical acceptable thresholds for drop cable
Describe how to test fiber with an OTDR and what a splice loss event looks like on the trace
Correlate a failed test result with a likely installation defect
Your checkpoint
A test-result interpretation worksheet with five hypothetical readings, each classified pass or fail with a stated cause
RF signal measurement, leakage and signal quality
Define downstream and upstream signal level targets and explain why each has a tolerance window
Explain MER, BER, and SNR and describe how each degrades as impairments increase
Identify the signature of common impairments including ingress, common-path distortion, and micro-reflections
Describe how to locate a leakage source using a leakage detector and signal-level triangulation
Your checkpoint
An impairment-to-signature reference sheet with at least six impairments and the measurement that reveals each
RF signal measurement, leakage and signal quality & Safety, standards, and customer service practices
Explain the purpose of FCC leakage rules and why leakage can interfere with licensed spectrum users
Describe a routine leakage patrol procedure and how to log and close out a leak
Interpret a spectrum analyzer display to separate legitimate signals from ingress
State the measurement thresholds that trigger escalation or repair
Your checkpoint
A leakage patrol log template with fields for location, frequency, level, and corrective action, plus a written escalation rule
Safety, standards, and customer service practices
Apply lockout/tagout, grounding, and personal protective equipment requirements to a plant maintenance scenario
Identify the hazards of confined spaces, ladders, and vehicle operation on public roads
Explain bonding and grounding requirements at the subscriber premises and why they matter for safety and signal quality
Describe how to respond to a customer complaint about service quality using a structured troubleshooting script
Your checkpoint
A safety scenario write-up covering three hazards with the correct control for each, plus a five-step customer troubleshooting script
Broadband network fundamentals and architecture & Coaxial and fiber cable installation and testing & RF signal measurement, leakage and signal quality & Safety, standards, and customer service practices
Review all four domains using a self-built question set and score above 80 percent
Re-derive the loss budget and test-interpretation rules without notes
Practice explaining a technical issue to a non-technical customer in plain language
Identify the two weakest domains and schedule targeted review
Your checkpoint
A scored 40-question self-test with a written remediation plan for any domain below 80 percent
Milestones
Week 2: Can draw the HFC architecture from memory and correctly explain the role of every labeled component
Week 4: Can interpret five mixed test readings, correctly classifying each as pass or fail with a plausible cause
Week 6: Can identify at least six impairments by their measurement signature and state the leakage escalation rule
Week 8: Scores 80 percent or higher on a self-built 40-question test spanning all four domains