Rhode Island Telecommunications System Technician Practice Exam | Questions and Answers | 2026 Update | 100% Correct.

1. What is the primary legal document that defines the three major forms of telecommunication licenses in Rhode Island? A) Rhode Island Department of Labor and Training guidelines B) Rhode Island General Laws, Title 5, Chapter 70 C) The National Electrical Code D) Federal Communications Commission (FCC) regulations Answer: B Rationale: The establishment and definition of the Telecommunications System Contractor (TSC), Telecommunications Systems Technician (TST), and Telecommunications System Limited Installer (TSLI) licenses are codified in the Rhode Island General Laws, specifically Title 5 (Businesses and Professions), Chapter 70 (Telecommunications) . While the DLT administers the exams and the NEC provides technical standards, the legal framework for the licenses themselves comes from state law. 2. According to Rhode Island law, under what condition must a Telecommunications Systems Technician (TST) perform their work? A) Independently, as a licensed professional B) Under the supervision of a Telecommunications System Contractor (TSC) C) Under the direct supervision of a Telecommunications System Limited Installer (TSLI) D) Without any supervision requirementAnswer: B Rationale: R.I. Gen. Laws § 5-70-5 explicitly states that while a TST license entitles the holder to perform installation, alteration, servicing, and testing, "All the work performed shall be under the supervision of the holder of a TSC license" . This defines the hierarchical relationship between the technician and contractor licenses. 3. A worker is registered with the state as a telecommunications apprentice. What is the maximum number of such apprentices that can be directly supervised by a single TSC or TST license holder? A) One B) Two C) Four D) An unlimited number, as long as they are registered Answer: B Rationale: The Rhode Island General Laws place a clear limit on supervision ratios to ensure safety and proper training. It states, "No more than two (2) registered telecommunications apprentices can be directly supervised by a single TSC or TST license holder" . 4. What is the primary function of a resistor in an electronic circuit? A) To store electrical energy in a magnetic field B) To regulate the flow of current C) To amplify a signal D) To convert alternating current (AC) to direct current (DC) Answer: B Rationale: A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. Its primary function is to limit or regulate the flow of electric current, thereby also helping to set voltage levels within a circuit . 5. Ohm's Law is a fundamental principle in electronics. Which equation correctly represents it?A) Power = Voltage × Current B) Voltage = Current × Resistance C) Current = Resistance × Voltage D) Resistance = Current × Voltage Answer: B Rationale: Ohm's Law defines the relationship between voltage (V), current (I), and resistance (R) in a linear circuit. The law is mathematically expressed as V = I × R, where voltage is equal to the current multiplied by the resistance . 6. In a series circuit, if you have three resistors with values of 10 ohms, 20 ohms, and 30 ohms, what is the total resistance? A) 10 ohms B) 20 ohms C) 60 ohms D) 6000 ohms Answer: C Rationale: In a series circuit, the total resistance is simply the arithmetic sum of all individual resistances. The current has only one path to follow, so it must flow through each resistor consecutively. Therefore, 10 Ω + 20 Ω + 30 Ω = 60 Ω . 7. Which electronic component is known for allowing current to flow easily in only one direction and blocking it in the opposite direction? A) Transistor B) Capacitor C) Diode D) Resistor Answer: C Rationale: A diode is a semiconductor device that acts as a one-way valve for current. This property, called rectification, is fundamental for converting AC to DC and for protecting circuits from reverse current . 8. What is the characteristic behavior of reactive components like capacitors and inductors in a circuit?A) They dissipate energy in the form of heat B) They store and release energy in electric or magnetic fields C) They only work in DC circuits D) They have a constant resistance regardless of frequency Answer: B Rationale: Unlike resistors, which dissipate energy, reactive components (capacitors and inductors) store energy temporarily. A capacitor stores energy in an electric field, while an inductor stores energy in a magnetic field. Their opposition to current (reactance) varies with the frequency of the signal . 9. You need to measure the voltage between two points in a working telecommunications circuit. What instrument should you use, and how must it be connected? A) An ammeter, connected in series B) A voltmeter, connected in parallel C) An ohmmeter, connected in parallel D) A wattmeter, connected in series Answer: B Rationale: A voltmeter is designed to measure the electrical potential difference between two points. To get an accurate reading without disrupting the circuit's current flow, the voltmeter must be connected in parallel across the component or two points where the voltage is to be measured . 10. How is power gain or loss in a circuit, expressed in decibels (dB), calculated? A) dB = 10 × log10(Pout / Pin) B) dB = 20 × log10(Pout / Pin) C) dB = 10 × log10(Vout / Vin) D) dB = Pout / Pin Answer: A Rationale: The decibel is a logarithmic unit used to express the ratio of two values, such as power. For power measurements, the formula is indeed 10 timesthe base-10 logarithm of the ratio of output power to input power. The 20 × log10 formula is used for voltage or current ratios, assuming equal impedances . 11. In digital electronics, what is the base of the hexadecimal number system, and what characters does it use? A) Base 10, using digits 0-9 B) Base 8, using digits 0-7 C) Base 16, using digits 0-9 and letters A-F D) Base 2, using digits 0 and 1 Answer: C Rationale: The hexadecimal system is a base-16 number system, which is widely used in computing and digital electronics as a more human-friendly representation of binary-coded values. It uses sixteen distinct symbols: 0-9 to represent values zero to nine, and A-F to represent values ten to fifteen . 12. Which logic gate will produce a "true" or HIGH output only when all of its inputs are "true" or HIGH? A) OR gate B) AND gate C) NOT gate D) XOR gate Answer: B Rationale: The AND gate is a fundamental digital logic gate that implements logical conjunction. Its output is HIGH only if all of its inputs are HIGH. If any input is LOW, the output is immediately forced LOW .