CTO Data Strategy & Analytics 2

Question 1

A CTO wants to implement a data mesh architecture. What is the primary organizing principle of data mesh?

Accepted Answer

Domain-oriented decentralized data ownership

Answer

Data mesh decentralizes data ownership to domain teams, treating data as a product owned by the team closest to it.

Question 2

Which metric best measures the business value of a data analytics initiative?

Accepted Answer

Revenue or cost impact attributable to data-driven decisions

Answer

Business value is best measured by tangible outcomes like revenue uplift or cost savings tied to decisions enabled by analytics.

Question 3

A company is choosing between a data warehouse and a data lake. Which scenario favors a data lake?

Accepted Answer

Exploratory ML workloads on raw, unstructured sensor data

Answer

Data lakes store raw, schema-on-read data and are ideal for exploratory analytics and machine learning on unstructured sources.

Question 4

What does a data catalog primarily provide to an organization?

Accepted Answer

Discoverable metadata inventory of data assets across the enterprise

Answer

A data catalog provides a searchable metadata registry so data consumers can discover, understand, and trust available data assets.

Question 5

A CTO must ensure analytics workloads do not degrade production OLTP performance. The best architectural solution is:

Accepted Answer

Replicate data to a dedicated OLAP system or read replica

Answer

Separating OLTP and OLAP workloads by replicating to a dedicated analytical system prevents resource contention.

(CTO) Certified Chief Technology Officer Practice Test