BSE 111 - KC2: The Five-Layer Architecture & the Two Tiers - Foundation for Infrastructure Resilience

What single sentence states the identity of the entire BSE 111 domain?

It is a government network that replaces private infrastructure permanently

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It is a volunteer hobby network with no operational role

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It is a parallel architecture, not restored commercial telecom

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It is a temporary bridge until carriers restore service

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Per the ratified tier boundary, how do the five layers divide into functional tiers?

Tactical = Layer 1 only; Strategic = Layers 2-5

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Tactical = Layers 1-4; Strategic = Layer 5 only

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The five layers are not tiered; all serve every function equally

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Tactical = Layers 1-3 (FRS/GMRS, CB, and the VHF/UHF repeater); Strategic = Layers 4-5 (HF and the non-electronic backup)

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A community has an excellent licensed amateur radio program and nothing else. What is its classic failure?

It has strategic reach but cannot coordinate its own gate, Watch and Ward positions, or medical stations

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It has no failure – amateur radio covers every function at every range

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Its failure is purely financial, since amateur equipment costs more

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It cannot legally participate in emergency communications

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The mirror failure: a community has Family Radio Service (FRS)/General Mobile Radio Service (GMRS) handhelds everywhere and nothing else. What is it missing?

Encryption capability, which is the strategic tier’s defining feature

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It has local coordination but is deaf to regional intelligence, military liaison, and neighboring communities

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Nothing important – regional traffic can wait for carrier restoration

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Only weather reports, which broadcast radio covers

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How does the ratified architecture classify Layer 5, the non-electronic backup?

As a tactical-only layer limited to inside a single building

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As optional for communities that have hardened their electronics

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As the strategic tier’s floor and every tier’s fallback – runners, visual signals, and couriers function when all electronic systems are destroyed or jammed, indefinitely

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As a ceremonial layer retained for historical continuity

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Which layers require no license of any kind to operate?

Every layer – licensing is suspended in declared emergencies

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Layers 3 and 4, because amateur radio is a public service

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No layer; even FRS requires an individual operator license

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Family Radio Service (FRS) handheld operation and Citizens Band (CB) radio – Layer 1’s FRS half and all of Layer 2

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Match the layer to its planning range.

Layer 1 FRS/GMRS 0.5-5 miles; Layer 2 CB 1-15 miles; Layer 3 VHF/UHF repeater 5-30 miles; Layer 4 HF 30-3,000+ miles

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Layer 1 covers 50 miles; Layer 2 covers 5 miles; Layers 3-4 are indoor systems

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All four electronic layers cover the same 10-mile radius

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Ranges are unknowable and are not part of the architecture

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Why five layers instead of one excellent system?

Because each neighborhood is assigned its own private layer

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Graceful degradation and diversity – different bands, different license classes, and different failure modes mean no single jam, surge, or shortage silences the community

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Procurement rules require five vendors

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Five is traditional in military doctrine and carried over unexamined

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Where does the backup municipal cellular array sit relative to the five layers?

Below Layer 5, as the most survivable element

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Outside the architecture; it is a commercial-carrier restoration project

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Above the radio layers in fragility – it augments the architecture and is never a substitute for it, because the array itself has electronic and satellite dependencies

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It replaces Layers 1-3 entirely, since phones are universal

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What is the relationship between the five layers and the Primary, Alternate, Contingency, Emergency (PACE) plan?

PACE replaces the five layers with four new ones

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PACE applies only to military units and is out of scope

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The five layers are the PACE plan; no assignment step is needed

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The layers are the resource pool; PACE assigns them per function – each critical link names its Primary, Alternate, Contingency, and Emergency path, localized to entity-available resources

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BSE 111 – KC2: The Five-Layer Architecture & the Two Tiers

BSE 111 – KC2: The Five-Layer Architecture & the Two Tiers

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