CPI CERTIFICATION CBRS EXAM SCRIPT 2025/2026
QUESTIONS WITH ANSWERS RATED A+
✔✔What should you do if you feel that your certification is at danger unjustly? - ✔✔You
can submit an appeal to WinnForum, who has the overall decision of whether your
appeal is just or not.
✔✔WinnForum - ✔✔The industry group in charge of setting standards and protocols for
using the CBRS band.
✔✔Who defines what happens in CBRS? - ✔✔the FCC, WinnForum and CBRS-A
✔✔CBRS-A - ✔✔CBRS Alliance. industry led group supporting LTE interests in CBRS
and leading the OnGo certification program.
✔✔Where are the general rules for CBRS defined? - ✔✔FCC Rules - Part 96
✔✔How does the SAS communicate with CBSDs? - ✔✔The CBSD sends a request to
the SAS and the SAS responds with a response code.
✔✔What is a registration request? - ✔✔This is the message sent from a CBSD to the
SAS in order to obtain registration in CBRS.
✔✔What is included in the registration request? - ✔✔Installation and transmitting
parameters for the CBSD.
✔✔what is included in the registration response? - ✔✔The response includes a CBSD
ID that is used to identify the CBSD at the SAS, and a registration code.
✔✔What are the types of parameters provided to the SAS by the CBSD? - ✔✔1.
Required
2. Optional
3. REG-Conditional
✔✔What is a spectrum inquiry request? - ✔✔A message that the CBSD sends to the
SAS after registration in order to find out what frequencies are available.
✔✔What is a grant Request? - ✔✔A request that the CBSD sends to the SAS asking for
permission to transmit at a specific frequency range and power level.
✔✔What is included in a grant response? - ✔✔The SAS includes permission to operate
within the specified parameters sent in the grant request, and includes an ID to identify
this specific grant request.
, ✔✔What is a heartbeat request? - ✔✔The CBSD heartbeat is sent after all other
registration steps to verify that all information is good to go and it can transmit.
✔✔How often are CBSDs required to heartbeat to the SAS? - ✔✔Every 4 minutes.
✔✔What is the full list of permission and registration steps for a CBSD? - ✔✔1. send
registration request
2. receive registration response
3. send spectrum inquiry request
4. receive spectrum inquiry response
5. send grant request
6. receive grant response
7. send heartbeat request
8. receive heartbeat response
✔✔When sending a request to the SAS, when does the CBSD receive a response
code? - ✔✔Always
✔✔How does the SAS receive REG-Conditional parameters? - ✔✔They are given by
the CPI.
✔✔What are the differences and similarities between Category A and B CBSDs? -
✔✔Category A:
- only requires CPI installation if the CBSD cannot determine its own location
- Can be used indoors
- Can be used outdoors if it is below the height limit
- Has a transmit power limit of 20 dBm/MHz and 30dBm/10MHz
Category B:
- Always requires CPI installation
- Cannot be used indoors
- does not have an outdoor height limit
- Has a transmit power limit of 37 dBm/MHz and 47dBm/10MHz
Both:
- Cannot be used on moving objects
- Must communicate with the SAS
✔✔What is the category A CBSD height limit? - ✔✔6 meters
✔✔HAAT - ✔✔Height Above Average Terrain - the height of a CBSD when compared to
its surrounding landscape.
QUESTIONS WITH ANSWERS RATED A+
✔✔What should you do if you feel that your certification is at danger unjustly? - ✔✔You
can submit an appeal to WinnForum, who has the overall decision of whether your
appeal is just or not.
✔✔WinnForum - ✔✔The industry group in charge of setting standards and protocols for
using the CBRS band.
✔✔Who defines what happens in CBRS? - ✔✔the FCC, WinnForum and CBRS-A
✔✔CBRS-A - ✔✔CBRS Alliance. industry led group supporting LTE interests in CBRS
and leading the OnGo certification program.
✔✔Where are the general rules for CBRS defined? - ✔✔FCC Rules - Part 96
✔✔How does the SAS communicate with CBSDs? - ✔✔The CBSD sends a request to
the SAS and the SAS responds with a response code.
✔✔What is a registration request? - ✔✔This is the message sent from a CBSD to the
SAS in order to obtain registration in CBRS.
✔✔What is included in the registration request? - ✔✔Installation and transmitting
parameters for the CBSD.
✔✔what is included in the registration response? - ✔✔The response includes a CBSD
ID that is used to identify the CBSD at the SAS, and a registration code.
✔✔What are the types of parameters provided to the SAS by the CBSD? - ✔✔1.
Required
2. Optional
3. REG-Conditional
✔✔What is a spectrum inquiry request? - ✔✔A message that the CBSD sends to the
SAS after registration in order to find out what frequencies are available.
✔✔What is a grant Request? - ✔✔A request that the CBSD sends to the SAS asking for
permission to transmit at a specific frequency range and power level.
✔✔What is included in a grant response? - ✔✔The SAS includes permission to operate
within the specified parameters sent in the grant request, and includes an ID to identify
this specific grant request.
, ✔✔What is a heartbeat request? - ✔✔The CBSD heartbeat is sent after all other
registration steps to verify that all information is good to go and it can transmit.
✔✔How often are CBSDs required to heartbeat to the SAS? - ✔✔Every 4 minutes.
✔✔What is the full list of permission and registration steps for a CBSD? - ✔✔1. send
registration request
2. receive registration response
3. send spectrum inquiry request
4. receive spectrum inquiry response
5. send grant request
6. receive grant response
7. send heartbeat request
8. receive heartbeat response
✔✔When sending a request to the SAS, when does the CBSD receive a response
code? - ✔✔Always
✔✔How does the SAS receive REG-Conditional parameters? - ✔✔They are given by
the CPI.
✔✔What are the differences and similarities between Category A and B CBSDs? -
✔✔Category A:
- only requires CPI installation if the CBSD cannot determine its own location
- Can be used indoors
- Can be used outdoors if it is below the height limit
- Has a transmit power limit of 20 dBm/MHz and 30dBm/10MHz
Category B:
- Always requires CPI installation
- Cannot be used indoors
- does not have an outdoor height limit
- Has a transmit power limit of 37 dBm/MHz and 47dBm/10MHz
Both:
- Cannot be used on moving objects
- Must communicate with the SAS
✔✔What is the category A CBSD height limit? - ✔✔6 meters
✔✔HAAT - ✔✔Height Above Average Terrain - the height of a CBSD when compared to
its surrounding landscape.
