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. Interprets the signal received from reader and controls memory storage and retrieval






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






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






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






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






6. Brains of the RFID tag






7. Die-cut web with adhesive - film face






8. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.






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






11. 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






12. Smart cards - smart label - etc.






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






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






15. 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






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






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






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






19. The act of writing the tag data by reader






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






21. Die-cut web adhesive - paper face






22. 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






23. 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






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






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






26. 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






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






28. 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)






29. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.






30. '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






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






32. 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...






33. 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






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






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






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






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






38. Standards = EPC global & ISO 18000 - Different Organizations






39. Time for an associated tag to be read






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






41. Dead zones that surround protrusions in antenna footprint






42. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible






43. One of the most versatile actuators. Widely used in manufacturing plants. They enable a variety of actions to be performed (such as monitoring and controlling a product packaging line - or applying a predetermined amount of torque to nuts in a mechan






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






45. 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






46. IC Chip - Antenna/Inductor - Power Source






47. Continuous web - no adhesive






48. 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.






49. 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






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