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. Continuous web - no adhesive






2. Optical and RFID hybrid






3. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly






4. '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






5. 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






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






7. Brains of the RFID tag






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






9. IC Chip - Antenna/Inductor - Power Source






10. UHF and microwave passive tags






11. 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






12. Responsible for implementing the reader protocol to communicate with compatible tags






13. The sender of this found out whether the transmission was successful by listening to the broadcast. If there was a collision - the sender transmitted after a random waiting period. The tags periodically send data packets with random quiet periods and






14. Die-cut web adhesive - paper face






15. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result






16. Serves as writable or non-writable data storage






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






18. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field






19. Smart cards - smart label - etc.






20. Pattern(Footprint) - Power/Attenuation - and Polarization






21. Die-cut web with adhesive - film face






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






23. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone






24. 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






25. Ranges upward from 1 GHz - Typically operates at either 2.45 GHz or 5.8 GHz - Can use both semi-active and passive tags - Has FASTEST data-transfer rate between tag and reader - Performs poorly in presence of metals and liquids - Antenna of a passive






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






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






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






29. Measurement of power for radiation of antenna used in US






30. 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






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






32. changes signal received from reader to include data that will be transmitted back to the reader






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






34. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.






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






36. This type of antenna is largely unaffected by tag orientation - Preferred in system that uses high UHF or microwave frequencies in an operating environment where there is a high degree of RF reflectance (due to presence of metals and so forth)






37. 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






38. Time for an associated tag to be read






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






40. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation






41. Most sensitive component of an RFID system - Housed in enclosures for easy mounting. Look like plain - shallow boxes. - Varying placement of this is usually the easiest adjustment while troubleshooting and is vital to achieving a high read rate






42. 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






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






44. Developed in the 1970s for a radio packet network at the University of Hawaii (hence the name) - 4 tags and 1 reader - Allows tags to collide partially (Theoretically proven maximum utilization=18.4%)






45. Frequencies between 30-300 KHz - Generally use passive tags - have low data-transfer rates from the tag to the reader - and are especially good if the operating environment contains metals - liquids - dirt - snow - or mud. Active tags also available






46. Can automatically turn on/off reader based on some external event detected. Can be used to provide some kind of input trigger to a reader






47. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas






48. Inductive coupling and passive backscatter (capacitive coupling)






49. Ranges from 300 MHz to 1GHz - Passive system operates at 915 MHz in the US and at 868 MHz in Europe - Active system operates at 315 MHz and 433 MHz - Can use both active and passive tags - Has a fast data-transfer rate between tag and reader - but pe






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