Test your basic knowledge |

RFID Technology

Subject : it-skills
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. changes signal received from reader to include data that will be transmitted back to the reader






2. Silicon chip is picked up by robotized arm using precise vacuum nozzle. Chip is flipped so that its electrical contacts point face down. Chip is aligned with the antenna and pressure and heat is applied.






3. UHF and microwave passive tags






4. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)






5. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.






6. Reader transmits a continuous-wave RF signal into the reading environment






7. Brains of the RFID tag






8. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)






9. Type of stationary reader that can print a bar code and create (i.e. write) an RFID tag on a smart label in an integrated operation - Reads the smart label tag that it has just written to validate the write operation. If the validation fails - it rej






10. Uses a serial communication link to communicate with an application - Reader is physically connected to a computer's serial port using an RS-232 or RS-485 serial connection. Both of these connections have an upper limit on the cable length that can b






11. These are categorized into Aloha based protocols and tree based






12. Used for storing data such as the reader configuration parameters and a list of tag reads






13. Dead zones that surround protrusions in antenna footprint






14. Serves as writable or non-writable data storage






15. Also called a fixed reader - Mounted on a wall - portal - or some suitable structure in the read zone. Readers not generally very tolerant of harsh environmental conditions - therefore if installed outdoors or on moving objects - take care to ruggedi






16. Optical and RFID hybrid






17. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)






18. 'Central nervous system' of entire RFID hardware system. Establishing communication with and control of this component is the most important task of any entity which seeks integration






19. Similar to guessing a number made of 1's and 0's by guessing each number one at a time






20. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency






21. Reader receives and executes commands from an application running on a host machine from a user using a vendor-supplied client to communicate with the reader. After reader fully executes the current command - it waits for the next. Reader can execute






22. Can reduce power by placing this device in the transmission line. As a result - the antennas signal is reduced and the read range diminished. Proves useful in situations where the read zone needs to be constrained as a part of system requirements so






23. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5






24. To disassociate the tag from a tagged object and optionally destroy it






25. Inductive coupling and passive backscatter (capacitive coupling)






26. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer






27. Measurement of power for radiation of antenna used in Europe






28. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves






29. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions






30. Every time a tag is read - it is saved to this






31. Receives analog signals from the tag via the reader antenna






32. In this mode - reader continuously reads tags in its read zone






33. Fixed to meet FCC and other regulatory requirements. The signal can be decreased or attenuated to limit the tag read window or aim it only at tags you want to read






34. Determines the read zone of a reader - Also called an antenna pattern - 3D region shaped somewhat like an ellipsoid or a balloon projecting out the front of the antenna. Never uniformly shaped like an ellipsoid but almost always contains deformities






35. LF and HF passive tags - Current flowing through a conductor generates a magnetic field around the conductor and vice versa - Readers antenna uses current to generate magnetic field - Tag's antenna when exposed to the magnetic field generates the cur






36. controls the internal functions under the command of the processor






37. Die-cut web adhesive - paper face






38. Proximity systems (low range -mm) medium range (cm) and long range (m)






39. Reader communicates to a tag through reader's antennas - a separate device that is physically attached to a reader - at one of its antenna ports - by means of cable. Called this because it creates an electromagnetic field to couple with the tag.






40. The 3D energy field generated by the antenna (also called reading area)






41. RF energy radiates from antenna in linear fashion - Provide longest range - Sensitive to the orientation of tag - Has single E-field component - Can have a narrow beam pattern - Best for application with known tag orientation






42. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.






43. The reflection of reader antenna signals on RF-opaque causes this






44. Broadcasts the reader transmitter's RF signal into its surroundings and receives tag responses on the reader's behalf. Therefore - proper positioning of these (NOT THE READERS) is essential for good read accuracy






45. The time during which a reader can emit RF energy to read tags






46. Process of creating a tag and uniquely associating it with an object






47. RF energy radiates from antenna in circular fashion - Slightly reduced range - Provides greater tolerance to tags in various orientation and bounce off of and bypass obstructions - 2 E-field components that are equal in magnitude - 90 degrees out of






48. Inductive coupling and passive backscatter (capacitive coupling)






49. Why ___________ is better: Cost of printed antennas varies between 24-44% of copper antennas - Printed antennas show 93-96% radiation efficiency compared to copper antennas...






50. Time for an associated tag to be read






Can you answer 50 questions in 15 minutes?



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