CTO Emerging Technologies & Innovation 4

Question 1

A CTO is evaluating vector databases for an enterprise RAG (Retrieval-Augmented Generation) system. Which indexing algorithm provides the best balance of query speed and recall accuracy for high-dimensional embedding search at billion-scale?

Accepted Answer

Hierarchical Navigable Small World (HNSW) graphs

Answer

HNSW graphs provide sub-linear query time with high recall at billion-scale by organizing vectors in a navigable multi-layer graph structure.

Question 2

When a CTO implements an MLOps platform, which practice most effectively prevents model performance degradation caused by data distribution shift in production?

Accepted Answer

Implementing continuous monitoring with automated drift detection and triggered retraining pipelines

Answer

Continuous drift detection with automated retraining pipelines catches distribution shift early and adapts models to new data patterns without manual intervention.

Question 3

In a platform engineering initiative, what is the PRIMARY purpose of an Internal Developer Platform (IDP)?

Accepted Answer

Providing self-service infrastructure and tooling abstractions that reduce cognitive load on developers

Answer

IDPs abstract infrastructure complexity and provide self-service capabilities, enabling developers to focus on product delivery rather than operational concerns.

Question 4

A CTO is considering adopting eBPF (extended Berkeley Packet Filter) for production observability. What is the key advantage over traditional APM agents for this use case?

Accepted Answer

eBPF runs in the Linux kernel with minimal overhead and requires no application code changes

Answer

eBPF programs run safely in the Linux kernel, capturing deep system telemetry with near-zero overhead without requiring any application instrumentation or restarts.

Question 5

Which zero-trust architecture principle most directly addresses the security risk introduced by SaaS sprawl across an enterprise?

Accepted Answer

Continuous verification of identity and device posture for every SaaS access request

Answer

Zero-trust's continuous verification ensures that even approved SaaS access is validated per-request based on current identity and device health, not just network location.

(CTO) Certified Chief Technology Officer Practice Test

(CTO) Certified Chief Technology Officer Practice Test

CTO Emerging Technologies & Innovation 4