CCDE 400-007 Reddit Questions

For accurate location tracking in wireless networks, signal triangulation methods like RSSI, TDoA, or Angle of Arrival require:

A (Perimeter coverage): Adding APs along the perimeter improves location accuracy by minimizing blind spots and improving triangulation geometry.

B (Higher density, <40 ft spacing): Reducing inter-AP distance increases overlapping coverage, which provides more data points for accurate positioning.

Other options explained:

C: Directional antennas limit overlapping coverage, reducing triangulation accuracy.

D: Monitor mode APs can assist in location services but are secondary to proper placement and density.

E: Increasing transmit power may enlarge cell size but can decrease accuracy by reducing overlapping AP zones.

A (Jenkins):Jenkins is a leading Continuous Integration/Continuous Deployment (CI/CD) automation tool for building, testing, and deploying code automatically.

Other options explained:

B: Ansible is used for configuration management and automation.

C: Perl is a programming language, not a CI/CD platform.

D: Chef is a configuration management tool.

The primary goal of resilient modular network design is to minimize the operational impact of failures by automating recovery and isolating fault domains.

C: Reducing failures that require manual intervention improves availability, reduces downtime, and ensures stability even under fault conditions.

Why other options are incorrect:

A: This is a limitation to avoid, not a design driver.

B: Minimizing app downtime is an outcome, not the operational driver itself.

D: Development time is not related to operational network resiliency.

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B: Service chaining in NFV can create suboptimal traffic flows depending on how virtualized functions are distributed.

E: NFV often requires orchestration platforms for lifecycle management, scaling, and automation of VNFs.

Why other options are incorrect:

A: Bandwidth utilization may not necessarily increase.

C: NFV enables use of commodity servers, not high-end routers.

D: OpenFlow is not mandatory for NFV deployment.

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