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






3. 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






4. Time for an associated tag to be read






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






6. Inductive coupling and passive backscatter (capacitive coupling)






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






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






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






10. 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






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






12. 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.






13. The act of writing the tag data by reader






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






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






16. Serves as writable or non-writable data storage






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






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






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






20. UHF and microwave passive tags






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






22. 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






23. 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






24. 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)






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






26. 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.






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






28. 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






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






30. Continuous web - no adhesive






31. Die-cut web adhesive - paper face






32. 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






33. Optical and RFID hybrid






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






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






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






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






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






39. 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






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






41. Die-cut web with adhesive - film face






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






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






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






45. 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






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






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






48. 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%)






49. 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






50. 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