[Free] 2018(June) Dumps4cert CompTIA RF0-001 Dumps with VCE and PDF Download 131-140

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RFID Certification Exam

Question No: 131 – (Topic 2)

According to European Norm (EN) 302-208, installations address dense-reader environments using:

  1. interrogator talks first.

  2. Listen Before Talk (LBT).

  3. direct sequence spread spectrum.

  4. frequency hopping spread spectrum.

Answer: B

Question No: 132 – (Topic 2)

A passive ultra high frequency (UHF) RFID system has been installed for use outdoors in a winter climate. Although the system has been designed and implemented for the region, the user should be told that: (Select TWO).

  1. low temperatures can crack antenna housings.

  2. there are temperatures that are beyond interrogator specifications.

  3. there are temperatures that are beyond tag specifications.

  4. ice and/or snow on tags can cause inaccurate readings.

Answer: C,D

Question No: 133 – (Topic 2)

A few months after installing an active Real Time Locating System (RTLS) in a warehouse, several of the tags stop working. Which of the following is MOST likely the reason?

  1. The interrogator#39;s frequency has inadvertently changed.

  2. The tags were placed too close to each other causing shadowing and coupling.

  3. The active tag was queried too often or set to transmit too often.

  4. The tag#39;s frequency was inadvertently changed.

Answer: C

Question No: 134 – (Topic 2)

Based on the diagram below, if antennas are located at points 2 and 4, at which of the following numbered locations should a presence detector be placed?

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  1. A light-break sensor should be placed at location one.

  2. A proximity sensor should be placed at location one.

  3. A proximity sensor should be placed at location 7.

  4. A light-break sensor should be placed at locations 3 and 5.

Answer: B

Question No: 135 – (Topic 2)

A library wants to use RFID to track books, tapes and other materials, to automate the checkout process and track items leaving the library through a portal. Which of the following types of tags would BEST meet their requirements?

  1. Surface Acoustic Wave (SAW) tags

  2. Passive ultra high frequency (UHF) tags at 2450 MHz

  3. Passive high frequency (HF) tags at 13.56 MHz

  4. Passive low frequency (LF) tags at 125 kHz

Answer: C

Question No: 136 – (Topic 2)

A large number of antennas are being damaged at the dock doors of an existing installation. Upon further inspection, the technician discovers that forklift operators are hitting the antennas because they are 2 inches (5 centimeters) in front of the protective pylons/ballards. Which of the following would be the BEST solution?

  1. Move the dock stands so they are further out of the travel path than the protective equipment installed.

  2. Re-install the antennas so they protrude into the travel path further than the dock stands.

  3. Remove the dock stands and install them somewhere else in the operation.

  4. Replace the dock stands with smaller, less obtrusive dock stands.

Answer: A

Question No: 137 – (Topic 2)

When installing a dock door interrogator system, which of the following should be done after installation?

  1. Installation of interrogator power.

  2. Testing for interference.

  3. Assignment of network addresses.

  4. Backend application testing.

Answer: B

Question No: 138 – (Topic 2)

A dense-reader interrogator:

  1. can operate near other interrogators using the same frequency.

  2. can resolve thousands of tags per second.

  3. will coexist with any number of other dense-reader interrogators.

  4. uses tag talks first access control.

Answer: C

Question No: 139 – (Topic 2)

A company wants to track personnel using RFID with a resolution within 10 feet (3.1 meters). Which of the following RFID systems would provide the BEST results?

  1. Active Real Time Locating System (RTLS)

  2. Passive ultra high frequency (UHF) RFID system with hand-held interrogators

  3. Passive high frequency (HF) RFID system with interrogators at entry points

  4. Global Positioning System (GPS)

Answer: A

Question No: 140 – (Topic 2)

A passive ultra high frequency (UHF) RFID system reading cartons on a conveyor stopped working when the conveyor speed was increased. Which of the following would be the FIRST action to take to adapt the system to high-speed operation?

  1. Add antennas to increase the time tags are in the interrogator field.

  2. Rotate the antennas to point toward the cartons as they travel.

  3. Move the light sensor away from the direction of travel.

  4. Increase the interrogator power.

Answer: B

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