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Cybersecurity explained with sources, examples and precise technical vocabulary. Every visual carries provenance, freshness and a textual equivalent.

Recursive DNS resolutionThe recursive resolver follows referrals on behalf of the client. A fresh cache entry can shorten this path.
  1. 01Client
  2. 02Recursive resolver
  3. 03Root
  4. 04TLD
  5. 05Authoritative server
  6. 06Typed answer + TTL
DNS namespace and delegationRFC 1034 / RFC 1035
  1. 01Root (.)
  2. 02Top-level domain (.test)
  3. 03Authoritative zone (example.test)
  4. 04Typed records (A, AAAA, MX…)
Defense in depth does not mean risk zeroMicrosoft Learn · SC-900
  1. Governance and people
  2. Physical and identity controls
  3. Network and platform controls
  4. Application and data controls
  5. Asset + residual risk
Identity and access decisionSC-900 · authentication ≠ authorization
  1. 01Requester
  2. 02Authentication
  3. 03Identity provider
  4. 04Identity information
  5. 05Authorization policy
  6. 06Allow or deny action
protocol-diagramtechnical-diagram

A sequence from application name to DNS resolver and returned address.

Secuencia editable entre aplicación, resolver y respuesta DNS con equivalente textual.

Status
verified
Verified
2026-09-20
Refresh
365 days
Generated
no
Open related learning →
architecture-diagramtechnical-diagram

DNS hierarchy from the root through a top-level domain and authoritative zone to typed records.

Diagrama SVG editable con relaciones jerárquicas y etiquetas HTML localizadas.

Status
verified
Verified
2026-09-20
Refresh
365 days
Generated
no
Open related learning →
architecture-diagramtechnical-diagram

Layered security controls around data and services with risk still present.

Diagrama SVG editable para fundamentos de seguridad y SC-900.

Status
verified
Verified
2026-09-20
Refresh
180 days
Generated
no
Open related learning →
protocol-diagramtechnical-diagram

A requester authenticates, an identity provider supplies identity information, and a service authorizes an action.

Flujo SVG editable para fundamentos de identidad y SC-900.

Status
verified
Verified
2026-09-20
Refresh
90 days
Generated
no
Open related learning →
certification-maptechnical-diagram

Interactive prerequisite map from computer basics to defensive, offensive and GRC routes.

Mapa interactivo y alternativa textual de fundamentos, IA, ramas y certificaciones.

Status
review
Verified
2026-09-20
Refresh
60 days
Generated
no
Open related learning →
network-diagramtechnical-diagram

A host checks whether a destination is local and otherwise sends the packet through its default gateway to a router.

Diagrama HTML/SVG localizado que muestra la decisión local y el siguiente salto hacia otra red.

Status
verified
Verified
2026-09-21
Refresh
365 days
Generated
no
Open related learning →
infographicconceptual-illustration

A network infographic showing internet, modem or ONT, router and switch, with wired branches to a desktop, printer, storage and access point, then wireless links to a laptop and phone.

Infografía educativa generada con relaciones de topología revisadas y texto técnico servido como HTML localizado.

Status
verified
Verified
2026-09-21
Refresh
365 days
Generated
yes
Open related learning →
software-screenshotreal-screenshot

Wireshark 4.6.8 on macOS showing a controlled DNS query and response filtered with dns, with packet list, details and bytes panes visible.

Captura real y versionada de una traza controlada con direcciones de documentación; las anotaciones educativas se renderizan como HTML localizado.

Status
verified
Verified
2026-09-21
Refresh
90 days
Generated
no
Open related learning →