SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Dry Inlay
Annunciator
Tag Standards
Power/Attenuation
2. 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
Microwave Frequency
RFID Reader
Circular Polarized Antenna
3. In this mode - reader continuously reads tags in its read zone
Tag Generations
Autonomous Mode
Passive Communication Methods
Processor
4. More than one tag tries to respond to a reader at the same time.
Low Frequency (LF)
Types of tags
ALOHA
Tag Collision
5. These are categorized into Aloha based protocols and tree based
Linear Polarized Reader Antenna
Power Source
Tag Anti-Collision Protocols
Memory
6. UHF and microwave passive tags
Pattern(Footprint)
Passive Backscatter (Capacitive Coupling)
UHF
Coupling Element
7. Continuous web - no adhesive
Serial Reader
Dry Inlay
Tag class
Flip-chip (Chip-to-Tag)
8. 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
Tag Generations
PLC
Circular Polarized Reader Antenna
Commissioning The Tag
9. Proximity systems (low range -mm) medium range (cm) and long range (m)
Microprocessor
Tag Standards
Attenuator
Read range
10. Dead zones that surround protrusions in antenna footprint
Nulls(Voids)
UHF
Linear Polarized Antenna
Processor
11. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
Copper Etching
Integrated Circuit Chips
Circular Polarized Antenna
Wet Inlay
12. To disassociate the tag from a tagged object and optionally destroy it
Constructive Interference
Decommissioning The Tag
Nulls(Voids)
Reader Antenna
13. 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
RFID Printer
Adaptive Binary Tree Anti-Collision
Tag class
Power Source
14. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
Transmitter
Main Components of RFID Tag
Polarization
Reader Antennas
15. 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
Interactive Mode
Polarization
Creating A Tag
Strap-to-Tag
16. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Main Components of RFID Tag
Processor
Passive Backscatter (Capacitive Coupling)
Actuator
17. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Polarization
Tag Collision
Actuator
RFID Reader
18. The 3D energy field generated by the antenna (also called reading area)
Pattern(Footprint)
Multipath
Wet Inlay
Tag
19. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Antenna/Inductor
Polarization
PLC
Nulls(Voids)
20. Measurement of power for radiation of antenna used in US
ALOHA
Equivalent Isotropic Radiated Power (EIRP)
Smart Label
Actuator
21. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
Creating A Tag
Reader Antenna
Stationary Reader
Slotted ALOHA
22. Measurement of power for radiation of antenna used in Europe
Effective Radiated Power (ERP)
ALOHA
Attenuator
Control Circuitry
23. 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
Multipath
Agile Reader
Stationary Reader
Receiver
24. 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
Antenna/Inductor
Sensor
Duty Cycle
25. Used for storing data such as the reader configuration parameters and a list of tag reads
Constructive Interference
Circular Polarized Reader Antenna
Stationary Reader
Memory
26. 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
RFID Printer
Microprocessor
Control Circuitry
Reader Collision
27. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)
Slotted ALOHA
Antenna Footprint
Stationary Reader
Constructive Interference
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
Attenuator
Foil Stamping
Transmitter
Control Circuitry
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
RFID Reader
Annunciator
Polarization
Copper Etching
30. 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
Actuator
RFID SyCommunication methods
Microwave Frequency
Low Frequency (LF)
31. Die-cut web adhesive - paper face
Tag
Power Source
Tag Anti-Collision Protocols
RFID Printer
32. Optical and RFID hybrid
UHF
Smart Label
Slotted ALOHA
Power/Attenuation
33. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Agile Reader
Microprocessor
ALOHA
Coupling Element
34. 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
Antenna Footprint
Creating A Tag
Constructive Interference
Characteristics Of Antennas That Contribute To Tag Readability
35. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.
Duty Cycle
Types of Tag Frequencies
ALOHA
Foil Stamping
36. 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.
Flip-chip (Chip-to-Tag)
Inductive Coupling
Persist Time
Reader Antennas
37. Reader transmits a continuous-wave RF signal into the reading environment
RFID Reader
Passive Backscatter (Capacitive Coupling)
Stationary Reader
Serial Reader
38. 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
Sensor
Slotted ALOHA
Pattern(Footprint)
RFID Reader
39. 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
ALOHA
Tag Anti-Collision Protocols
PLC
Linear Polarized Reader Antenna
40. 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
Foil Stamping
Inductive Coupling
Types of tags
Antenna/Inductor
41. Die-cut web with adhesive - film face
Wet Inlay
Types of tags
Flip-chip (Chip-to-Tag)
Creating A Tag
42. Pattern(Footprint) - Power/Attenuation - and Polarization
Slotted ALOHA
Characteristics Of Antennas That Contribute To Tag Readability
Tag List
Memory
43. 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
Equivalent Isotropic Radiated Power (EIRP)
Microwave Frequency
Copper Etching
Serial Reader
44. Process of creating a tag and uniquely associating it with an object
Creating A Tag
Antenna/Inductor
Main Components of RFID Tag
Commissioning The Tag
45. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Annunciator
Tag
Linear Polarized Antenna
Read range
46. 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...
PLC
Sensor
Memory
Tag Antenna Construction
47. Brains of the RFID tag
Transmitter
Tag Antenna Construction
Integrated Circuit Chips
Processor
48. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)
Reader Collision
Linear Polarized Reader Antenna
Slotted ALOHA
UHF
49. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.
Persist Time
Integrated Circuit Chips
Screen Printing
Pattern(Footprint)
50. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Multipath
Processor
Strap-to-Tag
Creating A Tag