D255 HLTH 4905 Professional Practice Experience I - Technical OA READINESS EXAM Q & S 2025/2026

1. Which of the following health informatics standards is
primarily used for the interchange of clinical data?
 a) HL7
 b) DICOM
 c) SNOMED CT
 d) LOINC
 Answer: a) HL7
 Rationale: HL7 (Health Level 7) is a set of international
standards for the exchange, integration, sharing, and
retrieval of electronic health information.
2. Which key component defines the security architecture
within a health information system?
 a) Data interoperability
 b) Network connectivity
 c) Access control
 d) Patient demographics
 Answer: c) Access control
 Rationale: Access control is fundamental for defining
user permissions and ensuring that only authorized
personnel can access sensitive information within a health
information system.
3. In the context of data analytics, what is the primary
purpose of data normalization?
 a) To improve data redundancy
 b) To simplify data structure
 c) To ensure data consistency and accuracy