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. 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






2. Optical and RFID hybrid






3. Inductive coupling and passive backscatter (capacitive coupling)






4. 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






5. IC Chip - Antenna/Inductor - Power Source






6. UHF and microwave passive tags






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






8. Inductive coupling and passive backscatter (capacitive coupling)






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






10. 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






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






12. 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.






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






14. 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%)






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






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






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






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






19. 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)






20. 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






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






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






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






24. Brains of the RFID tag






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






26. 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






27. 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






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






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






30. Dead zones that surround protrusions in antenna footprint






31. Smart cards - smart label - 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. 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






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






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






36. 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






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






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






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






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






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






42. 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






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






44. 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






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






46. 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






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






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






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






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests



Major Subjects

Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Browse all subjects

Browse all tests

Most popular tests