Key details for this exam, checked against the published exam outline
Each question shows the correct answer and an explanation of why it is right
Which one of the following measures the real power drawn by the load equipment?
Watts measures the real power drawn by the load equipment and is determined by multiplying the volts and amps of the load
Which one of the following is a Physical Security Device?
A contactless smart card is a physical security device that uses radio frequency identification (RFID) technology to identify and authenticate an individual. This type of card is used in a variety of applications, such as access control systems and digital payment systems. It is also used in physical access control systems, where the card is used to unlock doors or grant access to restricted areas. Contactless smart cards are also used in building access systems, where the card is used to grant access to certain areas of the building.
___________ measures the amount of electrical current flowing through a circuit during a specific time interval.
An ampere (A) is the unit of measurement for electric current. It measures the amount of electrical current flowing through a circuit during a specific time interval. The ampere is named after Andr-Marie Ampre, a French mathematician and physicist who was one of the main discoverers of electromagnetism.
Ohm () is the unit of measurement for electric resistance, which is the opposition to the flow of an electric current through a circuit.
Volt (V) is the unit of measurement for electric potential difference, which is the energy required per unit charge to move a test charge between two places in a static electric field.
Watt (W) is the unit of measurement for power, which is the rate at which energy is used or generated in an electrical circuit.
'Current' (https://www.britannica.com/topic/current-electricity)
'Electric current' (https://www.sciencedirect.com/topics/engineering/electric-current)
Which one of the following is a Physical Security Identification Method?
Voice identification is a physical security identification method that uses the sound of an individual's voice to identify them. This method is often used in combination with other identification methods, such as biometric scans, to provide a more secure form of authentication. Voice identification is used in a variety of situations, such as when accessing a secure facility or when making financial transactions.
Which mounted system can use any of the five heat removal methodologies?
Which system in Air Distribution System takes the hot exhaust air from the IT equipment to the CRAC
The return system in an air distribution system takes the hot exhaust air from the IT equipment and returns it to the Computer Room Air Conditioner (CRAC) unit. The CRAC unit cools the hot exhaust air and recirculates it back into the data center. The return system typically includes ducts, grills, and other components that allow the hot air to be efficiently and effectively returned to the CRAC unit.
Supply system is responsible for bringing in the cooled and filtered air from the CRAC unit to the data center.
Maintenance system and regulation system are not related to air distribution system in the data center.
Which one of the following is an advantage of Air Cooled Self-Contained System?
Air cooled self-contained systems are highly efficient and do not require ductwork and/or dropped ceiling for installation. This makes them a great choice for locations where installation costs are a major factor, such as in residential applications, or in places with limited space. Additionally, air cooled self-contained systems have more heat removal capacity per unit compared to water cooled systems, making them more cost-effective in the long run.
Exam domains verified against: Official GAQM CDCS-001 exam guide, last checked October 2026.
Physical security forms the foundation of data center protection. This module covers identifying critical assets, implementing physical security devices and methods, controlling access points, balancing risk tolerance against costs, and evaluating security measures to prevent unauthorized entry and asset theft.
Reliable power supply is essential for continuous data center operations. This module introduces key electrical terms, explains electrical loads and power types, covers power factors and system failures, and describes circuit breakers, outlets, and power distribution components that keep infrastructure running.
Backup generators provide power during outages and are critical to data center resilience. This module identifies main generator components, explains standby generators and internal combustion engines, covers filters and grounding, addresses voltage regulation and regulations compliance, and outlines maintenance practices.
Proper cooling prevents equipment failure and extends hardware life. This module covers cooling system types, air distribution approaches, heat removal strategies, self-contained systems and water-based solutions, mounting types, cooling arrangements, technology compaction, and rack arrangement patterns used in modern data centers.
Common questions about the exam itself
