Wednesday, 12 March 2008

wcs24 solution 11


1. Class 0 tags are read-only.

2. 1-bit tags do not carry any information about the product.

3. One of the main characteristics of sensory tags is that they can capture information about environmental conditions.

4. What is the purpose of an interrogator?
a. To read information from the tags

5. RFID middleware is used to convert the data read from the tags into a format that is compatible with that of the business application.

6. Reader antennas are designed for the specific application.

7. The orientation of the tag’s antenna usually does not affect readability.

8. RFID is not expected to have a major impact on network traffic.

9. UHF passive tags use a variation of amplitude and phase modulation.
FalseFalse, they use a variation of amplitude shift keying and phase shift keying.

10. A reader uses a method called coupling to connect with the corporate network. False

11. To power passive tags, the reader transmits A continuous wave or CW.

12. To modulate a response signal using backscatter, a tag has to Change the electrical properties or reflection coefficient of its antenna.

13. Interrogators and tags do not transmit simultaneously. This is known as half-duplex Communications.

14. The minimum amount of information stored in a smart label is the EPC, CRC, and the destroy password.

15. In a(n)dense reader environmentan interrogator will assume that there was a collision when it does not receive responses from any tags.

1 comment:

Anonymous said...

Thanks - you helped me pass an exam :) lol, it's not cheating it was open book, I just couldn't find the answer