Free 5G Technician Practice Questions

Sample Practice Questions

Try these 10 sample questions from the 5G Technician practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1Which power sources chiefly enabled mechanized production in the First Industrial Revolution?

   1. A.Electric motors and centralized electrical grids
   2. B.Water wheels and steam enginesCorrect answer: B
   3. C.Electronic controllers and digital computers
   4. D.Networked sensors and intelligent robots

   Explanation: The source states, "The First Industrial Revolution used water and steam power to mechanize production." Water wheels and steam engines represent those sources; electricity, electronics, and networked automation belong to later developments.

   Reference: The Fourth Industrial Revolution: what it means and how to respond — Opening historical overview, paragraph 2

2. 2Why is RF energy classified as non-ionizing radiation?

   1. A.It contains no electric or magnetic fields
   2. B.It cannot transfer energy into biological tissue
   3. C.Its energy is insufficient to ionize atoms and moleculesCorrect answer: C
   4. D.Its waves travel more slowly than ionizing radiation

   Explanation: The FCC states that RF energy levels "are not great enough to cause the ionization of atoms and molecules". Non-ionizing does not mean incapable of heating tissue or lacking electromagnetic fields.

   Reference: RF Safety FAQ — Federal Communications Commission — What is non-ionizing radiation?, second paragraph

3. 3Which 5G usage category primarily supports high-throughput consumer video streaming?

   1. A.Massive machine-type communications
   2. B.Enhanced mobile broadbandCorrect answer: B
   3. C.Ultra-reliable low-latency communications
   4. D.Mission-critical push-to-talk

   Explanation: The report says eMBB enables "high-speed streaming for in-home, screen and mobile devices on demand". mMTC emphasizes sensor connectivity and URLLC emphasizes reliability and delay rather than this throughput-led use.

   Reference: Setting the Scene for 5G: Opportunities & Challenges — Section 2.3, p. 7, eMBB paragraph

4. 4Which deployment exemplifies a heterogeneous cellular access network?

   1. A.Identical macro base stations with equivalent coverage
   2. B.A macro layer combined with lower-power small-cell tiersCorrect answer: B
   3. C.A single base station with no neighboring access nodes
   4. D.Identical repeaters with no cellular base stations

   Explanation: IEEE identifies "co-deployment of macrocell base stations with one or more tiers of lower-power nodes" as defining HetNets.

   Reference: Heterogeneous networks — IEEE Technology Navigator — What Are Heterogeneous Networks?

5. 5Who is responsible for initiating and maintaining necessary accident-prevention programs for a 5G construction project under 1926.20?

   1. A.The equipment manufacturer solely through product safety certification
   2. B.A competent person solely through performing site inspections
   3. C.The employer responsible for employees doing the construction workCorrect answer: C
   4. D.The permitting authority solely through issuing a local construction permit

   Explanation: OSHA assigns "the responsibility of the employer to initiate and maintain such programs". Product certification, delegated inspection, and local permitting do not transfer that employer program responsibility.

   Reference: 29 CFR 1926.20 — General safety and health provisions — 1926.20(b)(1)

6. 6Which development characterizes the Second Industrial Revolution's contribution to production?

   1. A.Using digital computers for programmable automation
   2. B.Using steam engines for initial mechanization
   3. C.Using electric power for mass productionCorrect answer: C
   4. D.Using cyber-physical systems for connected operations

   Explanation: The historical overview states, "The Second used electric power to create mass production." The other choices describe first-, third-, and fourth-revolution developments.

   Reference: The Fourth Industrial Revolution: what it means and how to respond — Opening historical overview, paragraph 2

7. 7Which statement correctly describes the established thermal effect of very high RF exposure?

   1. A.Absorbed RF energy can rapidly heat biological tissueCorrect answer: A
   2. B.Tissue warming proves that RF photons are ionizing
   3. C.Heating requires conductive contact with the transmitter
   4. D.Temperature rise depends on frequency without regard to intensity

   Explanation: The FCC identifies "the ability of RF energy to heat biological tissue rapidly." Heating is energy absorption, not evidence of ionization; exposure can occur without conductive contact, and high intensity matters to this established effect.

   Reference: RF Safety FAQ — Federal Communications Commission — What biological effects can be caused by RF energy?, first paragraph

8. 8Which communication requirements are the defining priorities of the URLLC usage category?

   1. A.High sustained throughput for broadband media streams
   2. B.Very large populations of infrequently reporting sensors
   3. C.Reliable delivery with very low communication delayCorrect answer: C
   4. D.Long battery life with delay-tolerant message delivery

   Explanation: The report names "Ultra-reliable and low-latency communications (URLLC)". Reliability and very low delay distinguish this category from throughput-led broadband, massive sensor populations, or delay-tolerant energy saving.

   Reference: Setting the Scene for 5G: Opportunities & Challenges — Section 2.3, p. 6, category 3

9. 9In a typical HetNet, what is the principal role of the macrocell overlay?

   1. A.Providing room-scale coverage inside individual hotspot buildings
   2. B.Providing only localized radio capacity at the busiest hotspots
   3. C.Providing the wide-area radio coverage overlayCorrect answer: C
   4. D.Providing only localized coverage behind indoor obstructions

   Explanation: IEEE identifies "a macrocell overlay providing wide-area coverage". Localized hotspot capacity and indoor infill are roles of lower-power tiers rather than the principal wide-area macro overlay.

   Reference: Heterogeneous networks — IEEE Technology Navigator — Network Architecture and Cell Tiers

10. 10What inspection arrangement does 1926.20 require for construction job sites, materials, and equipment?

    1. A.Frequent and regular inspections by employer-designated competent personsCorrect answer: A
    2. B.One inspection at project start, with later checks only after incidents
    3. C.Frequent checks by workers without the designated inspection competence
    4. D.One final acceptance inspection after all construction work is complete

    Explanation: OSHA requires "frequent and regular inspections" by employer-designated competent persons. Project-start-only, incident-only, or completion-only checks miss the ongoing duty, while frequency alone does not replace the competence requirement.

    Reference: 29 CFR 1926.20 — General safety and health provisions — 1926.20(b)(2)