TPM Technical Expertise and Understanding 2

Question 1

A TPM is evaluating two candidate architectures: a monolith and a microservices design. Which factor most strongly favors choosing microservices?

Accepted Answer

Independent scaling of specific service components is a key business requirement

Answer

Microservices shine when independent scaling of discrete capabilities is needed, since each service can be deployed and scaled without affecting others.

Question 2

During a sprint, engineers discover that a critical API dependency has no SLA documentation. What should a TPM do first?

Accepted Answer

Work with the API owner to document expected availability and latency baselines

Answer

Establishing documented baselines with the API owner is the immediate actionable step that unblocks the team while creating a foundation for a formal SLA.

Question 3

A TPM is reviewing a system that uses optimistic locking. In which scenario would optimistic locking cause the most problems?

Accepted Answer

High-contention tables with frequent concurrent writes to the same records

Answer

Optimistic locking assumes conflicts are rare; under high write contention on the same rows, collision rates spike and retries degrade throughput significantly.

Question 4

Which of the following best describes 'infrastructure as code' (IaC) and its primary benefit for a TPM?

Accepted Answer

Provisioning and managing infrastructure through machine-readable configuration files, enabling repeatability

Answer

IaC codifies environment definitions so they can be version-controlled, peer-reviewed, and reproducibly applied, reducing drift and manual errors.

Question 5

A TPM notices that the P99 latency of a service is 800ms while P50 is 50ms. What does this pattern most likely indicate?

Accepted Answer

A small percentage of requests experience significant tail latency due to outlier conditions

Answer

A large gap between P50 and P99 indicates tail latency issues where a minority of requests — often hitting slow paths or resource contention — experience much worse performance.

(TPM) Technical Program Manager Certification Practice Test

(TPM) Technical Program Manager Certification Practice Test

TPM Technical Expertise and Understanding 2