10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
The A&L exam has 70 questions and runs 2 hours.
These 10 free A&L questions are organized by exam domain, so you can see how each part of the Antenna and Line Specialty blueprint is tested. Reveal the answer and explanation under each question.
The structural analysis for a sector-frame replacement omits an existing microwave dish that remains on the tower. The replacement frame is lighter than the frame being removed. Before accepting the analysis as applicable to the work, the lead technician should:
Correct answer: D - Obtain a structural disposition that accounts for the actual installed inventory.
An approved modification requires replacing one tieback on a loaded sector frame. The work package provides an engineered temporary brace and specifies its attachments. The replacement tieback cannot occupy the connection until the old one is removed. Identify the acceptable load-transfer sequence.
Correct answer: A - Install and verify the specified temporary brace before releasing the old tieback.
The approved azimuth of a sector frame's reference arm is 002° true, with an allowed error of up to 4°. A survey using the same true-north reference measures 359° true. Considering azimuth alone, which entry belongs on the inspection record?
Correct answer: A - 3° error; azimuth meets tolerance.
On a completed sector, a sweep shows positive return loss of 21-24 dB throughout the required band; the project minimum is 18 dB. The specified PIM test returns −144 dBc against a maximum of −150 dBc. Both test setups, including the PIM carrier powers and reference, have been verified. How should these results direct troubleshooting?
Correct answer: B - Investigate nonlinear sources; acceptable return loss does not establish low PIM.
The inspection record reads: 'Mounting pipe plumb; mechanical downtilt 3°; verified RET setting 3°.' The work order separately specifies 0° mechanical and 6° electrical downtilt. The foreman argues that the installed angles already total 6°. Which disposition meets the work order?
Correct answer: C - Restore 0° mechanical downtilt and set the RET to 6°.
An RF crew saves a passing sweep of an isolated feeder, then substitutes a test lead of a different length. Calibration remains referenced to the end of the old lead; no compensation for the replacement lead has been applied. The feeder has not been disturbed, but a repeat distance-to-fault trace shows a new near-end discontinuity. Where should troubleshooting begin?
Correct answer: D - Recalibrate at the new lead's feeder connection and repeat the measurement.
An ice bridge's grounding detail requires a bonding jumper across an insulating joint. The jumper is missing. During an isolated inspection, the ground-ring test passes, and resistance across the joint is low because coaxial shields provide a parallel path. Which closeout decision is justified?
Correct answer: C - Install the specified jumper; the shield path does not replace it.
A planned hybrid-cable pull uses a guide that bends the cable's centerline through a 600 mm-diameter arc. The cable instructions require a minimum bend radius of 400 mm while pulling and 200 mm once installed. The completed route includes a 250 mm-radius drip loop. Which revision satisfies the bend requirements?
Correct answer: A - Enlarge the pulling guide to the required radius; retain the finished loop.
A technician's correctly worn, function-checked RF monitor alarms on the approach to a rooftop antenna cluster. The nearest previously verified safe area is behind the technician along a clear access route. What should happen immediately?
Correct answer: B - Withdraw along that route, then notify the RF-safety contact.
An RF-trained technician is assigned to a restricted rooftop route. A current assessment places exposure above the general-population limits but below the occupational/controlled limits. The technician is informed of the site's hazards, can control exposure, and will follow the approved access plan with the required monitoring. The configuration is unchanged, and public access is prevented. Which determination should govern access?
Correct answer: C - Occupational/controlled access applies while these conditions remain in place.
The full bank has 1,020 more A&L questions with explanations.
Continue in the free practice test →
View plans