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Showing 20 results · Page 15 for “data”. More results are available below.

Mini-lessons

CCNA · Network Access

CAPWAP tunnels AP traffic to the controller

…controller using UDP 5246 for control and UDP 5247 for data. The AP handles real-time radio work like beacons and acknowledgements while the controller handles authentication, roaming, RF ma…

CCNA · IP Connectivity

OSPF neighbors must match area, timers, subnet, auth

…ANGE, suspect an MTU mismatch, because that breaks the database description exchange. If they never appear at all, check the hello parameters and whether the interface is passive. Hook: hell…

CCNA · Automation and Programmability

SDN separates the control plane from the data plane

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…ing routes and building forwarding tables, and its own data plane that moves packets. Software-defined networking centralizes the control plane in a controller such as Cisco Catalyst Center …

CCNA · Automation and Programmability

REST verbs map to CRUD: POST, GET, PUT or PATCH, DELETE

…1 unauthorized or 404 not found, and 5xx server error. Data is usually exchanged as JSON, which uses braces for objects, brackets for lists, and quoted keys. Most Cisco controllers authentic…

CCNP-CYBER · Detection engineering and validation

Detection engineering and validation

…nd malicious test cases. No alerts may reflect missing data rather than a precise rule. Validate telemetry coverage, parsing and rule execution before interpreting detection metrics. Correla…

CCNP-CYBER · Traffic analysis

Read a conversation in context

…ted payloads can hide content even when connection metadata remains visible. Worked example A capture shows repeated SYN packets without SYN-ACK replies. What does it establish? TCP connecti…

CCNP-DC · Data center networking

Redundant paths need a coherent design

Data-center networks connect compute and storage across many links and devices. Redundant paths improve resilience when forwarding, loop prevention and failover work together. Consider east-…

CCNP-DC · Storage concepts

Choose storage by access pattern

…ctories, and object storage addresses objects with metadata. The workload determines which access model fits. Capacity alone is insufficient: consider latency, throughput, concurrent access …

CCNP-DC · Virtualization operations

Virtual machines still share physical capacity

A hypervisor lets several virtual machines share a host while each runs its own operating system. The workloads still compete for physical CPU, memory, storage and network capacity. Investig…

CCNP-SEC · Security architecture

Place controls at trust boundaries

A trust boundary is where data or actions cross between components with different security assumptions. Map those crossings and require appropriate validation, identity checks and authorizat…

CCNP-SP · Data center networking

Redundant paths need a coherent design

Data-center networks connect compute and storage across many links and devices. Redundant paths improve resilience when forwarding, loop prevention and failover work together. Consider east-…

CCOA · Detection engineering and validation

Detection engineering and validation

…nd malicious test cases. No alerts may reflect missing data rather than a precise rule. Validate telemetry coverage, parsing and rule execution before interpreting detection metrics. Correla…

CCSA · Security architecture

Place controls at trust boundaries

A trust boundary is where data or actions cross between components with different security assumptions. Map those crossings and require appropriate validation, identity checks and authorizat…

CCSE · Security architecture

Place controls at trust boundaries

A trust boundary is where data or actions cross between components with different security assumptions. Map those crossings and require appropriate validation, identity checks and authorizat…

CCSK · Cloud security

Cloud security follows the data and identities

…missions, secrets and sensitive information. Map where data enters, is stored and leaves, then identify the identities allowed to use each step. Apply least privilege and collect evidence of…

CCSK · Security architecture

Place controls at trust boundaries

A trust boundary is where data or actions cross between components with different security assumptions. Map those crossings and require appropriate validation, identity checks and authorizat…

CCSM · Security architecture

Place controls at trust boundaries

A trust boundary is where data or actions cross between components with different security assumptions. Map those crossings and require appropriate validation, identity checks and authorizat…

CCSM-ELITE · Security architecture

Place controls at trust boundaries

A trust boundary is where data or actions cross between components with different security assumptions. Map those crossings and require appropriate validation, identity checks and authorizat…

CCSP · Cloud governance and cost

Make ownership and cost visible

…stent ownership tags and cost allocation Ownership metadata and allocation connect consumption to responsible teams. Reports become actionable when costs have owners.

CCSP · Cloud security

Cloud security follows the data and identities

…missions, secrets and sensitive information. Map where data enters, is stored and leaves, then identify the identities allowed to use each step. Apply least privilege and collect evidence of…