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MOTOTRBO Knowledge Test

Description

How well do you know MOTOTRBO? This test will help you rate yourself and improve your knowledge.
Wayne Holmes
Quiz by Wayne Holmes, updated more than 1 year ago
Wayne Holmes
Created by Wayne Holmes over 9 years ago
835
0
2

Resource summary

Question 1

Question
The above radio's configuration can be managed in Radio Management?
Image:
MOTOTRBO_Comm_Tier_portable-stubby-antenna-3_4-left (image/jpg)
Answer
  • True
  • False

Question 2

Question
Where would MNIS and DDMS be used in a MOTOTRBO system?
Answer
  • On a PC
  • On a PC running an Application
  • On a PC running a 3rd party application which accesses the radio's GPS and presence information
  • On a PC running a 3rd party application which accesses the repeaters via NAI and retrieves the radio's GPS and/or presence information.

Question 3

Question
In IP Site Connect, the repeater beacon does what?
Answer
  • Identify the site to the radios.
  • Allow the radio to measure the RSSI.
  • Allow the radio to roam.
  • Allow the radio to measure the RSSI in the absence of radio traffic.

Question 4

Question
In Linked Capacity Plus, the Master repeater must have the following properties/configuration?
Answer
  • Both the repeater and the router to which it is connected, must have a static IP address; several UDP ports need to be forwarded to the master and if IP Remote Programming is used, one TCP port must also be forwarded.
  • The Router to which it is connected must have a static IP address; several UDP ports need to be forwarded to the master and if IP Remote Programming is used, one TCP port must also be forwarded.
  • The Router to which it is connected must have a static IP address.
  • Must have a static IP Address; should have Radio ID 1 and must be behind a router and the router must have port forwarding set up.
  • Static IP Address; Radio ID 1 and must be behind a router.
  • The Router to which it is connected must have a static IP address; several UDP ports need to be forwarded to the master.

Question 5

Question
In Linked Capacity Plus, does the number of repeaters per site have to be the same on each site?
Answer
  • Yes
  • No

Question 6

Question
MOTOTRBO IP Site Connect allows the connection of up to 15 repeaters to form a wide area conventional network. One of these repeaters is configured as a Master and the remainder as Peers. If an additional Peer is added, what will the network do?
Answer
  • Continue working with some issues.
  • Probably stop working.
  • Probably continue working, but the reliability cannot be assured.
  • None of these.

Question 7

Question
The repeaters on Site 1 are both configured as master repeaters. This is an IP Site Connect network. Which of the below statements best describes how the Router needs to be set up? The top repeater is called Master Repeater 1 and the bottom is called Master Repeater 2.
Image:
Presentation2 (image/jpg)
Answer
  • Static IP Address on WAN port (either public or via VPN). Master Repeater 1 uses UDP port 50000. Master Repeater 2 uses UDP port 50001. The Router forwards UDP port 50000-50100 to the LAN.
  • Static IP Address on WAN port (either public or via VPN). Both repeaters use a static IP address on the LAN. Master Repeater 1 uses UDP port 50000. Master Repeater 2 uses UDP port 50001. The Router forwards UDP port 50000 to master IP address 1 and UDP port 50000 and UDP port 50001 to Master IP address 2.
  • None of these.

Question 8

Question
The diagram shows three possible antenna configurations. Assuming the frequency separation allows it, which of these options would be the best choice?
Image:
Presentation3 (image/jpg)
Answer
  • A
  • B
  • C

Question 9

Question
Which of the below statements best describe what is de-sensing and how would one confirm the presence of it?
Answer
  • De-sensing occurs when a high level RF signal interferes with a receiver's ability to receive a weaker signal. We can check this by turning off the offending repeaters one by one to see which one is causing it.
  • De-sensing occurs when a high level RF signal is present on the receiving radio's antenna and causes the receiver's RF amplifier to be overloaded resulting in the reduction of measured sensitivity.
  • De-sensing occurs when a high level RF signal is present on the receiving radio's antenna and causes the receiver's RF amplifier to be overloaded resulting in the reduction of measured sensitivity. The presence can be confirmed by testing the sensitivity via an isolated-tee bridge.
  • De-sensing occurs when a high level RF signal interferes with a receiver's ability to receive a weaker signal. The presence can be confirmed by testing the sensitivity via an isolated-tee bridge.

Question 10

Question
Which one of the below statements best describe how Manual Site Roam works, in IP Site Connect?
Answer
  • A button, called Manual Site Roam, can be programmed on the radio. When the user presses this button, the radio will send a wake-up message on all the channels in the roam list. If a repeater is present on that channel, it will respond with a beacon which allows the radio to measure the signal strength. The radio then forms a list of roamed channels and roams to the next available channel.
  • The radio will use Manual Site Roam when no signal is received while the radio is in a passive roam state. Here the radio will go through all the channels and send a wake -up message. If a repeater is present on that channel, it will respond with a beacon which allows the radio to measure the signal strength. The radio then forms a list of roamed channels and roams to the strongest signal.
  • None of these describe manual site roaming.
  • A button, called Manual Site Roam, can be programmed on the radio. When the user presses this button, the radio will send a wake-up message on all the channels in the roam list. If a repeater is within RF range on that channel, it will respond with a beacon which allows the radio to measure the signal strength. The radio then forms a list of roamed channels and roams to the next available channel.

Question 11

Question
This is a Capacity Plus site. One of the circulators in the combiner, connected to Repeater 3, has gone open circuit. Which of the below statements are correct? (Tick all that apply)
Image:
Presentation4 (image/jpg)
Answer
  • Repeater 3 will have a high VSWR condition
  • Repeater 3 will have no outbound coverage
  • Repeater 3 will remove itself from contention for Rest Channel.
  • When the Rest Channel goes on to Repeater 3, no further calls can be set up.
  • If RDAC is used, an alarm will be displayed.
  • There will be no effect.
  • There will be approximately 33% more traffic on repeater 1 and 2.

Question 12

Question
Which of the following statements best describe MOTOTRBO Linked Capacity Plus?
Answer
  • MOTOTRBO Linked Capacity Plus is a multi-site trunked radio system which uses no site controller or control channel and supports up to 15 sites. Each site can have up to 8 repeaters as well as a maximum of 3 data revert repeaters.
  • MOTOTRBO Linked Capacity Plus is a multi-site trunked radio system which uses no site controller or control channel and supports up to 15 sites. Each site can have up to 8 repeaters of which a maximum of 3 can be used as data revert repeaters.
  • MOTOTRBO Linked Capacity Plus is a multi-site trunked radio system which uses no site controller or control channel and supports up to 5 sites. Each site can have up to 6 repeaters of which a maximum of 12 can be data revert.
  • MOTOTRBO Linked Capacity Plus is a multi-site trunked radio system which uses no site controller or control channel and supports up to 70 sites. Each site can have up to 15 repeaters of which a maximum of 12 can be data revert.

Question 13

Question
A radio used on an IP Site Connect System, is switching between sites too slowly (i.e. Radio stays on site 1 while site 2 offers a very good signal). What can be changed in the system configuration to improve this? Tick all that apply.
Answer
  • Decrease the RSSI Threshold in the channels.
  • Decrease the RSSI Threshold in the roam list.
  • Increase the RSSI Threshold in the roam list.
  • Examine whether the beacon interval can be decreased especially if this is a system with higher site density.
  • Upgrade the radio firmware.

Question 14

Question
In Capacity Plus, what would be the result of setting the RSSI Threshold in the repeater channel to -124dBm?
Answer
  • The repeater will be able to receive weaker signals.
  • The repeater will open squelch much lower.
  • If any signal is present, the repeater will activate FCC Type 2 monitor and remove itself from the system.
  • If a signal is present, which does not have a matching color code, the repeater will remove itself from contention as a rest channel.
  • The repeater will become disabled and will remove itself from contention as a rest channel.
  • There will be no effect whatsoever.

Question 15

Question
What would be the result of setting the RSSI Threshold in the Radio’s channel to -124dBm?
Answer
  • The radio will open it's squelch much sooner.
  • The radio will be more sensitive.
  • The radio will be blocked more often due to noise.
  • Under noisy conditions, the radio may mistake noise as a valid signal and will thus regard the channel as busy.

Question 16

Question
You have set up a system so that the repeaters can be programmed remotely. However when you connect to the Master using the CPS, you are unable to read any of the repeaters. The system works perfectly and port forwarding is set up correctly. You are able to ping all the Routers. You are able to connect to the Master and can get the list of peers and their respective IP addresses using RDAC. You have confirmed that all UDP ports are being forwarded.
Image:
Presentation5 (image/jpg)
Answer
  • TCP Port 50100 is not being forwarded in the Router.
  • UDP Port 50000 is not being forwarded in the Router.
  • The problem is definitely not in the Router setup.
  • The CPS ID is wrong.

Question 17

Question
Whenever you are in the office, and try to read a radio, the CPS gives error code 595. When you go onto a customers site or work from home, the CPS works perfectly. Which of these statements would be a likely cause? (Tick all that apply)
Answer
  • There is an IP address conflict between the radio and Wireless LAN and/or (Wired) LAN. Unplug the LAN cable, disable the WiFi card in your PC and try again?
  • There is an IP address conflict between the radio and Wireless LAN and/or (Wired) LAN. Change the IP address of the radio.
  • The version of CPS you are using is too old, upgrade.
  • The 100kW medium wave transmitter located next door is interfering with communications on the USB port.
  • Only use a USB 2.0 port. USB 3.0 will not work.

Question 18

Question
You have installed a Capacity Plus system and plan to install the location tracking application later. You have enabled GPS and ARS in the radios. It is okay to do this.
Answer
  • True
  • False

Question 19

Question
A customer has a PMKN4012A programming cable. They plug this cable into the PC but cannot understand why a driver is NOT installed. Why is this?
Answer
  • There is no 'electronics' in the cable. The driver will be installed when a radio is connected.
  • The ADS chip in the cable remains disabled until a radio is connected.
  • No driver is required.
  • They are using the wrong cable.
  • There is no 'electronics' on the USB end of the cable. The driver will be installed only when a radio is connected.

Question 20

Question
A customer calls you and complains that the location of one of their vehicles is shown about 100m off the road, on their tracking application, while the drivers swears he is on the road. What could be the reasons for this?
Answer
  • The driver is lying!
  • The map data is faulty. The customers understanding of GPS orginiates from car navigation systems and expects the tracking application to automatically snap the vehicles position to the nearest road (just like it does in their car navigation system).
  • The GPS receiver in the radio is not getting signal from many satellites and hence the GDOP is poor.
  • None of these.

Question 21

Question
Which of these radios can be programmed via OTAP?
Answer

Question 22

Question
A MOTOTRBO system has been installed and it is found that there is overlap between one of the sites and a site owned by another company. As a result, users from your system can sometimes be heard by users at this company. What can be done to resolve this?
Answer
  • Change the color code on all radio radios and repeaters
  • Enable Enhanced Privacy
  • Reduce Power
  • Increase the RSSI Threshold in the repeaters and radios.

Question 23

Question
Is it possible for a radio, used on an IP Site Connect system, to scan other channels?
Answer
  • Yes, all MOTOTRBO radios support scan.
  • No, it is not possible to scan and roam.

Question 24

Question
A customer wants to implement MOTOTRBO but they also want to use their analogue two-way radios until they have budget to replace these. They have purchased a repeater and some MOTOTRBO radios. What can be done in the repeater and radios to support MOTOTRBO and analogue users? What do we need to be careful about when it comes to the configuration?
Answer
  • Use Dynamic Mixed Mode
  • Ensure that the analogue radios use PL
  • Ensure that in analogue mode, all radios use PL.
  • Ensure that in analogue mode, the repeater and all radios use PL.
  • Use PL, but avoid 67,0 and 103,5Hz as these sometimes cause older analogue radios to un-mute to DMR signals.
  • Use PL (and avoid 67,0 and 103,5Hz) or DPL as provisioning the repeater with CSQ mode may result in it getting stuck in analogue repeat mode during times of interference.

Question 25

Question
You are about to design a new Linked Capacity Plus system, tick all the tings you need to be mindful of when it comes to the configuration?
Answer
  • A Router which supports NAT loopback is required.
  • One Router is required on each site.
  • The requirement for a static, public IP address can be avoided by means of VLANs and VPN.
  • The number of repeaters on each site does not need to be the same.
  • If the site, with the smallest number of channels, is completely busied, no other calls can be placed, other than emergency or a call which is set up via transmit interrupt.
  • Sufficient bandwidth and low latency is important.

Question 26

Question
A customer has unfortunately bought some 由白痴废话制造 FL888 DMR radios. Which of the following will/may not work?
Answer
  • Private call
  • Group call
  • Text message
  • IP site connect roaming
  • Transmit interrupt
  • DCDM
  • Capacity Plus

Question 27

Question
Your calculations show that the UL/DL bandwidth required is 277kbps for the system shown in the attached diagram. The sites are connected by a commercial grade ADSL line. The ISP has offered a 512kbps connection. Will this be sufficient?
Image:
Presentation2 (image/jpg)
Answer
  • Yes
  • No

Question 28

Question
Is it possible to view ones own GPS coordinates in a DP4801? How?
Answer
  • No
  • Yes, via the menu.
  • Yes but you have to press #123# to access the engineering menu.
  • Yes, via the menu but only if GPS is ticked in General Settings.

Question 29

Question
In December 2012, you sold some DP4800 radios. This customer wants to start using AES 256 bit encryption. What do we need to consider? (Tick all that apply)
Answer
  • Can AES256 be imported into this country?
  • We may need to upgrade the firmware in the customers radios?
  • We need to confirm how many radios they have so we can purchase the correct number of licences?
  • The DP4800 does not support AES256.
  • is the customer using these radios in analogue mode?

Question 30

Question
Have a look at the attached IP plan. What can you see wrong here? (Tick all that apply) A larger view of this table can be seen at http://bit.ly/1rBpLmB.
Image:
Book11 (image/jpg)
Answer
  • The Master IP Addresses are all the same!
  • The Master UDP Ports are all the same.
  • Some of the peer repeaters have an IP address conflict.
  • Nothing is wrong here
  • The Rest Channel/Site IP is the same on all repeaters (conflict).
  • The Rest Channel/Site IP needs to be unique on all repeaters. All the peers need to have unique IP addresses in separate subnets.
  • The Rest Channel/Site IP needs to be unique on all repeaters. All the peers need to have unique IP addresses in separate subnets. The UDP ports need to be changed to unique values for all repeaters.
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