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| Section | Objectives |
|---|---|
| Topic 1: Tools, Documentation, and Technical Literacy | - Basic tools and multimeter usage awareness - Shift handovers and communication standards - Work orders and maintenance logs |
| Topic 2: Mechanical and Cooling Systems | - Cooling redundancy and environmental monitoring - Heat transfer and cooling importance - CRAC/CRAH units, chillers, and cooling towers - Airflow and water-based cooling |
| Topic 3: Entry-Level Operations Expectations | - Role responsibilities and professional standards - Shift-based working practices |
| Topic 4: Safety and Professionalism | - Lockout/tagout and arc flash awareness - Industrial hazards and PPE - Incident reporting and stop-work authority |
| Topic 5: Electrical Fundamentals | - Breakers, transformers, and switchgear - AC and DC power, single-phase and three-phase - Grounding and bonding - UPS systems and generators |
| Topic 6: Data Center and Critical Facilities Fundamentals | - Redundancy concepts (N, N+1, 2N, 2N+1) - IT and facilities relationship - Data center types and purpose |
| Topic 7: Controls, Monitoring, and Alarms | - Sensors, alarms, and alerts - Building Management Systems (BMS) - Control loops and escalation procedures - Operating conditions and trend analysis |
| Topic 8: Operating Procedures and Reliability | - Standard and Emergency Operating Procedures (SOP/EOP) - Maintenance and change management - Human performance practices |
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질문 # 16
What function does Computer Room Air Conditioner (CRAC) perform in a data center?
정답：C
설명：
A Computer Room Air Conditioner (CRAC) traditionally uses a direct-expansion refrigeration system to remove heat from recirculated data-hall air and return conditioned air to the IT environment. Therefore, A is correct.
A CRAC includes refrigeration components associated with the vapor-compression cycle and fans that circulate conditioned air. This contrasts with a CRAH (Computer Room Air Handler) , which typically uses chilled water supplied by a central chilled-water plant through a cooling coil. Oracle's data-center environmental guidance describes computer-room air-conditioning systems as responsible for maintaining intake-air conditions and stresses recirculation, cooling coils, conditioned-air distribution, and adequate airflow to equipment.
B incorrectly combines monitoring functions with chilled-water terminology. C describes a condenser-water pumping or heat-rejection loop rather than a CRAC's core function. D describes the characteristic cooling arrangement of a CRAH, not a conventional CRAC.
The certification distinction is important: CRAC = self-contained/direct-expansion refrigeration-based computer-room cooling; CRAH = chilled-water air-handling unit supplied from a central plant . Both ultimately manage the thermal environment, but they obtain cooling capacity through different mechanical architectures.
질문 # 17
How do environmental monitoring and cooling redundancy work together during a cooling issue?
정답：B
설명：
D correctly distinguishes the functions of monitoring and redundancy. Environmental monitoring detects abnormal conditions through measurements such as temperature, humidity, airflow-related values, equipment status, and alarms. Redundancy, meanwhile, preserves enough operating capability after a component or path failure to keep the environment within acceptable limits while operators investigate and respond.
Oracle Data Center Operations Foundations specifically requires learners to recognize monitoring, alarms, and response procedures , while also understanding mechanical/HVAC fundamentals. Oracle's facility requirements reinforce this relationship by requiring cooling failure analysis and supported rack inlet conditions. Oracle additionally warns that excessive temperatures can reduce equipment reliability and potentially cause partial or complete rack shutdown.
Option A is incorrect because redundancy does not determine the repair or direct technicians to a specific component; procedures and troubleshooting do that. Option B incorrectly attributes automatic control actions to redundancy itself. Automatic adjustment, where implemented, is a controls function. Option C is also inaccurate because redundancy does not inherently increase "cooling demand." Instead, redundant capacity or paths maintain heat-removal capability following a failure. Monitoring therefore provides awareness , while redundancy provides operational resilience and response time .
질문 # 18
Before beginning a maintenance task, how should PPE be selected?
정답：B
설명：
PPE must be selected after assessing the hazards associated with the specific task and determining which parts of the body may be exposed , making B correct. PPE is a hazard-control measure, so its selection must correspond to the actual energy sources and exposures present-such as electrical, mechanical, chemical, thermal, impact, or other physical hazards.
Oracle Data Center Operations Foundations explicitly places safety-first and professional behavior at the center of critical-facilities preparation. Oracle's Workforce Health and Safety documentation also distinguishes unsafe conditions by hazard category and identifies both incorrect use of PPE and failure to follow Job Safety Analysis as unsafe acts. This reinforces the required sequence: identify the hazard, determine exposure, and then apply the prescribed protection.
A is unsafe because previous similar work does not prove that present conditions or hazards are identical, and availability does not determine suitability. C delays PPE selection until exposure has already begun. D substitutes preference for hazard-based requirements.
For examination purposes, PPE selection should be viewed as part of pre-job hazard assessment , not as an optional personal choice or reactive measure after work has started.
질문 # 19
Which two practices support clear status reporting during shift handover?
정답：C,D
설명：
Effective shift handover depends on objective, unambiguous, reproducible information . Reporting observations and measured values when available provides the incoming operator with factual evidence instead of interpretation. Using consistent equipment and location identifiers ensures that everyone is discussing the same asset, panel, rack, room, cooling component, or alarm source. Therefore, A and D are the appropriate practices.
Oracle's data-center curriculum emphasizes procedures-based operations, monitoring and alarm response, technical documentation, and professional operational behavior. Its more advanced technician curriculum also emphasizes incident ownership and operating within a 24/7 environment using structured workflows. These principles require continuity between outgoing and incoming shifts.
Option B is weak because a "most likely" root cause based solely on experience introduces assumption and can anchor subsequent troubleshooting incorrectly. Option C contains current status, which is useful, but "best related time estimates" can introduce unsupported or speculative information. Reliable handover communication should clearly distinguish measured facts from hypotheses and estimates. The incoming shift must be able to determine exactly what was observed, where it occurred, what remains abnormal, and what actions are pending without having to reinterpret undocumented assumptions.
질문 # 20
What are the two functions of a UPS in data center operations?
정답：A,C
설명：
An Uninterruptible Power Supply (UPS) provides continuity between loss or degradation of the normal electrical source and restoration of a suitable alternate source. Therefore, A and D correctly describe its data- center functions.
When utility voltage drops, disappears, or experiences unacceptable disturbances, the UPS can maintain the critical IT load without the interruption that would otherwise occur. During a prolonged utility outage, the UPS also provides the bridging interval while standby generators start, accelerate, stabilize at their required voltage and frequency, and become available to support the facility load.
Oracle's electrical requirements explicitly recommend a stable power source such as a UPS because repeated power interruptions and fluctuations increase the likelihood of component failures. Oracle's current facility design requirements further specify separate power paths backed by independent UPS systems, with emergency generation sized for IT, mechanical, and emergency loads.
Option B describes the function of an engine-generator, not a UPS. Option C is primarily associated with transfer-switch or electrical switching functionality. The UPS does not replace long-duration generation; its critical role is immediate uninterrupted power and power conditioning during the transition between normal and standby sources .
질문 # 21
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