Match each environmental or safety concept to its description.
Drag a concept onto its matching description — or click a concept then click the description.
Electrostatic discharge – can damage sensitive components
Material Safety Data Sheet – documents hazards of chemicals
Uninterruptible Power Supply – provides battery backup during outages
Protects equipment from voltage spikes
Recycling or disposing of e-waste according to regulations
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
MSDS: Document that provides information on chemical hazards and safe handling.
The correct matches are: MSDS with chemical hazard document, ESD with static discharge, and UPS with battery backup. Common confusions include mixing safety documents with hardware protection devices.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
MSDS: Document that provides information on chemical hazards and safe handling.
Why this is correct
An MSDS (Material Safety Data Sheet), now commonly called an SDS under the Globally Harmonized System, is a detailed technical document that lists a chemical's physical properties, health hazards, reactivity, first-aid measures, safe handling, and disposal requirements. Technicians consult it before using cleaning solvents, toner, or battery acid to determine required PPE and emergency procedures. It is purely a reference document, not an electrical component or protective device.
ESD: Sudden transfer of static electricity that can damage components.
Why this is correct
Electrostatic discharge (ESD) is the sudden, uncontrolled transfer of static electricity between objects at different electrical potentials. Even a discharge of a few hundred volts—often below human perception—can punch through semiconductor gate oxides, damage integrated circuits, or weaken components so they fail later. Proper grounding through wrist straps, antistatic mats, and shielding bags prevents ESD. It is an electrical event, not a type of battery or backup power system.
UPS: Battery backup that provides temporary power during outages.
Why this is correct
A UPS (Uninterruptible Power Supply) is a hardware device containing batteries and an inverter that instantly supplies AC power when the mains supply fails. This temporary backup gives users time to save data and perform an orderly shutdown, and it also conditions the power line by filtering surges and sags. Runtime is limited by load and battery capacity. It is a physical power-protection appliance, not an informational document or electrostatic phenomenon.
MSDS: Device that protects against power surges.
Why it's wrong here
This pairing is incorrect because a surge protector, not an MSDS, is the device that shields equipment from power surges via metal-oxide varistors or similar components that clamp excess voltage. An MSDS is not a physical device at all—it is a written safety document about chemical hazards. Thus the response describes electrical protection equipment while the term MSDS refers to chemical safety documentation, so the match is false.
ESD: A type of battery backup.
Why it's wrong here
This description mistakenly applies to a UPS or battery backup, not to electrostatic discharge. ESD is a rapid transient current flow caused by a buildup of static charge, often generated by friction, and it can damage sensitive components when a charged person touches them. ESD does not store energy for later use and has no role in supplying backup power. Therefore classifying ESD as a type of battery backup is factually wrong.
Go deeper
Key term
ESD
Electrostatic Discharge is the sudden flow of electricity between two electrically charged objects caused by contact or an electrical short, which can damage sensitive electronic components.
Key term
Backup
A backup is a copy of computer data taken and stored separately so that the original data can be restored if it is lost, damaged, or corrupted.
About these practice questions
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 220-1102 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 220-1102 exam.