最新的RFID+認證 RF0-001考試題庫

問題1

Ideally, as a tag passes though the antenna read window it should be:

A. on the same plane as the antenna.

B. at least 30 feet (9.3 meters) from the antenna.

C. facing away from antenna.

D. inside metal foil.

正確答案: A

問題2

All of the following are true statements about passive RFID tags EXCEPT that they:

A. do not implement duty cycle control.

B. permit multiple sessions in the same interrogation zone.

C. contain batteries.

D. may transmit and receive on different channels.

正確答案: C

問題3

RFID printers are able to encode a single tag at a time because of their ability to isolate a tag. This is achieved:

A. because characteristics of far-field communication allow for only one tag to be encoded.

B. by positioning and tuning the antenna.

C. because metal case blocks external interference allowing for the tag to be isolated.

D. by ensuring that there is at least 8 inches (20 centimeters) between inserts.

正確答案: B

問題4

Backscattering operates by:

A. changing the reflection coefficient of the antenna.

B. using spread-spectrum to equalize the power over the band.

C. transmitting with power from the interrogator.

D. alternating between linear and circular polarization.

正確答案: A

問題5

Interrogators placed at dock door portals are failing. When repairing the interrogators, the manufacturer's technician observes that the interrogators are showing signs of water intrusion. The BEST solution would be to:

A. place the affected interrogators in National Electrical Manufacturers Association (NEMA)
4 enclosures.

B. install dock shelters on all dock doors utilizing RFID interrogation zones.

C. move the dock door stands back from the doors 4 feet (1.2 meters) to decrease exposure.

D. fill all openings in the interrogator with water resistant silicone.

正確答案: A

問題6

Within an office environment, a property manager must place an RFID tag on all assets with a value of greater than $100. The tags must cost less than $10 each; be able to store a maximum of one kilobit of data and read with a portable interrogator. When performing inventory, the manager is unable to move the assets to interrogate the tags. The RFID tags used should be applied to the front of the asset with an adhesive strong enough to prevent tag removal and be:

A. a passive Class 0 tag.

B. a Surface Acoustic Wave (SAW) tag.

C. a passive13.56 MHz tag.

D. an active Class 1 Gen 2 tag.

正確答案: C

問題7

Prior to installation of RF equipment, which of the following should be evaluated as potential sources of interference?

A. Metal racking

B. Manual dock doors

C. Pallet jacks

D. Public address system/intercom

正確答案: D

問題8

When using an RFID enabled printer to encode tags as they are being printed, which of the following determines the data being encoded?

A. The software generating the print job.

B. The printer's firmware.

C. The printer is encoding in a sequence guaranteeing unique data on each tag.

D. RFID enabled printers cannot encode RFID tags.

正確答案: A

問題9

An interrogator emits one watt from its antenna connector. The energy passes through a cable with 3dB loss to a linearly-polarized antenna with 6dB gain. Which of the following would be the Effective Isotropic Radiated Power (EIRP)?

A. 2 watts

B. 4 watts

C. 0.5 watt

D. one watt

正確答案: A

問題10

Which of the following anti-collision protocols uses a synchronous scheme?

A. Binary tree

B. Stream cipher

C. Digital modulation

D. ALOHA

正確答案: A

問題11

When installing an RFID interrogator on a forklift, which of the following would be the BEST means of ensuring proper grounding on the forklift?

A. Refer to the equipment manuals.

B. Ground the interrogator to the frame.

C. Connect the antenna ground to the battery.

D. Use a volt meter to test for ground.

正確答案: A

問題12

When installing equipment into a proposed interrogation zone based on the site diagram, a technician observes that the cooling fans at the dock doors are directly in the way of the dock stands requiring installation. Which of the following actions should the technician take?

A. Cancel the installation because there are physical constraints preventing them from completing the job as designed.

B. Remove the fans and place them on the floor just outside of the proposed interrogation zone.

C. Remove the fans; install the dock stands, and then remount the fans to the dock stands to complete the job.

D. Contact the project manager to arrange a meeting with site management and determine the best solution.

正確答案: D

問題13

When testing for best placement of a tag on a case of liquid product such as water, look for:

A. static air gaps.

B. null air gaps.

C. no air gaps.

D. dynamic air gaps.

正確答案: A

問題14

The technician is preparing to place the light break sensor for a dock door interrogation zone. Based on the following diagram, in which of the following numbered locations should the light break sensors be placed? (Select TWO).

A. 6

B. 4

C. 5

D. 3

正確答案: B,D

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