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Test your basic knowledge |
RFID Technology
Start Test
Study First
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. More than one tag tries to respond to a reader at the same time.
Screen Printing
ALOHA
Main Components of RFID Tag
Tag Collision
2. Every time a tag is read - it is saved to this
Flip-chip (Chip-to-Tag)
Tag List
Reader Collision
Equivalent Isotropic Radiated Power (EIRP)
3. Reader transmits a continuous-wave RF signal into the reading environment
Types of tags
Passive Backscatter (Capacitive Coupling)
Nulls(Voids)
Copper Etching
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
Linear Polarized Reader Antenna
Serial Reader
RFID Reader
ALOHA
5. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible
Screen Printing
Sensor
Tag Generations
Stationary Reader
6. 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
Low Frequency (LF)
Linear Polarized Antenna
Annunciator
Power Source
7. 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
Polarization
ALOHA
Power Source
Strap-to-Tag
8. Used for storing data such as the reader configuration parameters and a list of tag reads
Memory
Coupling Element
RFID Reader
Duty Cycle
9. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
PLC
Circular Polarized Antenna
Tag Anti-Collision Protocols
Slotted ALOHA
10. UHF and microwave passive tags
Passive Backscatter (Capacitive Coupling)
Effective Radiated Power (ERP)
Antenna Footprint
Commissioning The Tag
11. 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%)
ALOHA
Polarization
Linear Polarized Antenna
Circular Polarized Antenna
12. Measurement of power for radiation of antenna used in Europe
Modulation Circuitry
Coupling Element
Effective Radiated Power (ERP)
PLC
13. Brains of the RFID tag
Power Source
Power/Attenuation
Integrated Circuit Chips
Actuator
14. Receives analog signals from the tag via the reader antenna
Receiver
Tag
Tag Collision
Equivalent Isotropic Radiated Power (EIRP)
15. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Slotted ALOHA
PLC
Main Components of RFID Tag
Tag Anti-Collision Protocols
16. 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
ALOHA
Tag Anti-Collision Protocols
Passive Backscatter (Capacitive Coupling)
Power/Attenuation
17. Die-cut web with adhesive - film face
Commissioning The Tag
Destructive Interference
Foil Stamping
Wet Inlay
18. 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
RFID Reader
Main Components of RFID Tag
Inductive Coupling
Tag
19. 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
UHF
Circular Polarized Reader Antenna
Slotted ALOHA
Control Circuitry
20. 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
Linear Polarized Reader Antenna
UHF
Microwave Frequency
Flip-chip (Chip-to-Tag)
21. Inductive coupling and passive backscatter (capacitive coupling)
RFID SyCommunication methods
Foil Stamping
UHF
Types of Tag Frequencies
22. Interprets the signal received from reader and controls memory storage and retrieval
Tag Generations
Power/Attenuation
Processor
RFID SyCommunication methods
23. 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
Coupling Element
Foil Stamping
Circular Polarized Antenna
Interactive Mode
24. Smart cards - smart label - etc.
Attenuator
Types of tags
Actuator
Serial Reader
25. 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
Dry Inlay
ALOHA
PLC
Sensor
26. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
Equivalent Isotropic Radiated Power (EIRP)
Interactive Mode
Transmitter
RFID SyCommunication methods
27. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Processor
Types of Tag Frequencies
Tag Anti-Collision Protocols
Linear Polarized Antenna
28. Time for an associated tag to be read
Decommissioning The Tag
PLC
Receiver
Persist Time
29. 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.
Coupling Element
Antenna/Inductor
Read range
Pattern(Footprint)
30. Pattern(Footprint) - Power/Attenuation - and Polarization
Memory
Microwave Frequency
Attenuator
Characteristics Of Antennas That Contribute To Tag Readability
31. To disassociate the tag from a tagged object and optionally destroy it
Duty Cycle
Tag Standards
RFID Reader
Decommissioning The Tag
32. Dead zones that surround protrusions in antenna footprint
Adaptive Binary Tree Anti-Collision
Passive Communication Methods
Nulls(Voids)
Agile Reader
33. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Agile Reader
Inductive Coupling
Tag Generations
Autonomous Mode
34. 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
Inductive Coupling
Autonomous Mode
RFID Reader
Stationary Reader
35. The act of writing the tag data by reader
Reader Antennas
Equivalent Isotropic Radiated Power (EIRP)
Sensor
Creating A Tag
36. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.
Commissioning The Tag
Slotted ALOHA
PLC
Foil Stamping
37. Continuous web - no adhesive
Inductive Coupling
Read range
Dry Inlay
Power Source
38. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
UHF
Destructive Interference
Stationary Reader
Linear Polarized Reader Antenna
39. 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.
Wet Inlay
Receiver
Flip-chip (Chip-to-Tag)
Characteristics Of Antennas That Contribute To Tag Readability
40. IC Chip - Antenna/Inductor - Power Source
Main Components of RFID Tag
Microwave Frequency
Tag Antenna Construction
Circular Polarized Reader Antenna
41. Die-cut web adhesive - paper face
Read range
Characteristics Of Antennas That Contribute To Tag Readability
Tag
Persist Time
42. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Decommissioning The Tag
Passive Communication Methods
Reader Collision
Adaptive Binary Tree Anti-Collision
43. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
Read range
Serial Reader
RFID Reader
Main Components of RFID Tag
44. Process of creating a tag and uniquely associating it with an object
Polarization
Duty Cycle
Commissioning The Tag
Tag class
45. Proximity systems (low range -mm) medium range (cm) and long range (m)
Effective Radiated Power (ERP)
Read range
Adaptive Binary Tree Anti-Collision
Autonomous Mode
46. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.
RFID SyCommunication methods
Screen Printing
Pattern(Footprint)
Power Source
47. Optical and RFID hybrid
Tag class
Smart Label
Types of tags
Passive Communication Methods
48. Serves as writable or non-writable data storage
Control Circuitry
Memory
Copper Etching
Low Frequency (LF)
49. Standards = EPC global & ISO 18000 - Different Organizations
UHF
Tag Standards
Coupling Element
Foil Stamping
50. 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
Annunciator
Power Source
Main Components of RFID Tag
Creating A Tag