CDO System Architecture & Design 5

Question 1

A disaster recovery plan states that no more than 15 minutes of data may be lost after an outage. Which metric does this define?

Accepted Answer

Recovery Point Objective (RPO)

Answer

RPO is the maximum acceptable amount of data loss measured in time, while RTO is the maximum acceptable downtime.

Question 2

Which technique captures inserts, updates, and deletes from a source database's transaction log so they can be streamed to downstream systems with low latency?

Accepted Answer

Change Data Capture (CDC)

Answer

Log-based CDC reads database changes as they happen without heavy queries against source tables.

Question 3

Splitting one large database horizontally across several servers by a key such as customer ID is called what?

Accepted Answer

Sharding

Answer

Sharding spreads rows across independent nodes by a shard key to scale writes and storage horizontally.

Question 4

Within TOGAF's Architecture Development Method, which phase defines the target data and application architectures?

Accepted Answer

Phase C: Information Systems Architectures

Answer

TOGAF ADM Phase C covers the Information Systems Architectures, which include data architecture and application architecture.

Question 5

What is the main purpose of an Architecture Decision Record (ADR)?

Accepted Answer

To record the context, decision, and consequences of a significant architecture choice

Answer

ADRs record why architecture decisions were made so future teams understand the trade-offs.

CDO - Chief Data Officer Certification Practice Test

CDO - Chief Data Officer Certification Practice Test

CDO System Architecture & Design 5