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






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






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






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






5. The act of writing the tag data by reader






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






7. Optical and RFID hybrid






8. 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






9. Dead zones that surround protrusions in antenna footprint






10. 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






11. 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






12. 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






13. 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






14. 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






15. 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.






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






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






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






19. 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.






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






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






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






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






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






25. IC Chip - Antenna/Inductor - Power Source






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






27. 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






28. 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






29. '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






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






31. Serves as writable or non-writable data storage






32. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader






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






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






35. 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






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






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






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






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






40. 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)






41. More than one tag tries to respond to a reader at the same time.






42. UHF and microwave passive tags






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






44. 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






45. Die-cut web adhesive - paper face






46. Provides electrical power to other tag elements - Can harvest power from the signal received from the reader - Can have its own internal power source - Active - semi-passive and passive






47. Time for an associated tag to be read






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






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