Quiz
MOTOTRBO Knowledge Test
Questions in this quiz (30)
1The above radio's configuration can be managed in Radio Management?
- ATrue
- BFalse
2Where would MNIS and DDMS be used in a MOTOTRBO system?
- AOn a PC
- BOn a PC running an Application
- COn a PC running a 3rd party application which accesses the radio's GPS and presence information
- DOn a PC running a 3rd party application which accesses the repeaters via NAI and retrieves the radio's GPS and/or presence information.
3In IP Site Connect, the repeater beacon does what?
- AIdentify the site to the radios.
- BAllow the radio to measure the RSSI.
- CAllow the radio to roam.
- DAllow the radio to measure the RSSI in the absence of radio traffic.
4In Linked Capacity Plus, the Master repeater must have the following properties/configuration?
- ABoth 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.
- BThe 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.
- CThe Router to which it is connected must have a static IP address.
- DMust 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.
- EStatic IP Address; Radio ID 1 and must be behind a router.
- FThe Router to which it is connected must have a static IP address; several UDP ports need to be forwarded to the master.
5In Linked Capacity Plus, does the number of repeaters per site have to be the same on each site?
- AYes
- BNo
6MOTOTRBO 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?
- AContinue working with some issues.
- BProbably stop working.
- CProbably continue working, but the reliability cannot be assured.
- DNone of these.
7The 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.
- AStatic 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.
- BStatic 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.
- CNone of these.
8The diagram shows three possible antenna configurations. Assuming the frequency separation allows it, which of these options would be the best choice?
- AA
- BB
- CC
9Which of the below statements best describe what is de-sensing and how would one confirm the presence of it?
- ADe-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.
- BDe-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.
- CDe-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.
- DDe-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.
10Which one of the below statements best describe how Manual Site Roam works, in IP Site Connect?
- AA 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.
- BThe 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.
- CNone of these describe manual site roaming.
- DA 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.
11This 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)
- ARepeater 3 will have a high VSWR condition
- BRepeater 3 will have no outbound coverage
- CRepeater 3 will remove itself from contention for Rest Channel.
- DWhen the Rest Channel goes on to Repeater 3, no further calls can be set up.
- EIf RDAC is used, an alarm will be displayed.
- FThere will be no effect.
- GThere will be approximately 33% more traffic on repeater 1 and 2.
12Which of the following statements best describe MOTOTRBO Linked Capacity Plus?
- AMOTOTRBO 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.
- BMOTOTRBO 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.
- CMOTOTRBO 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.
- DMOTOTRBO 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.
13A 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.
- ADecrease the RSSI Threshold in the channels.
- BDecrease the RSSI Threshold in the roam list.
- CIncrease the RSSI Threshold in the roam list.
- DExamine whether the beacon interval can be decreased especially if this is a system with higher site density.
- EUpgrade the radio firmware.
14In Capacity Plus, what would be the result of setting the RSSI Threshold in the repeater channel to -124dBm?
- AThe repeater will be able to receive weaker signals.
- BThe repeater will open squelch much lower.
- CIf any signal is present, the repeater will activate FCC Type 2 monitor and remove itself from the system.
- DIf a signal is present, which does not have a matching color code, the repeater will remove itself from contention as a rest channel.
- EThe repeater will become disabled and will remove itself from contention as a rest channel.
- FThere will be no effect whatsoever.
15What would be the result of setting the RSSI Threshold in the Radio’s channel to -124dBm?
- AThe radio will open it's squelch much sooner.
- BThe radio will be more sensitive.
- CThe radio will be blocked more often due to noise.
- DUnder noisy conditions, the radio may mistake noise as a valid signal and will thus regard the channel as busy.
16You 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.
- ATCP Port 50100 is not being forwarded in the Router.
- BUDP Port 50000 is not being forwarded in the Router.
- CThe problem is definitely not in the Router setup.
- DThe CPS ID is wrong.
17Whenever 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)
- AThere 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?
- BThere is an IP address conflict between the radio and Wireless LAN and/or (Wired) LAN. Change the IP address of the radio.
- CThe version of CPS you are using is too old, upgrade.
- DThe 100kW medium wave transmitter located next door is interfering with communications on the USB port.
- EOnly use a USB 2.0 port. USB 3.0 will not work.
18You 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.
- ATrue
- BFalse
19A 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?
- AThere is no 'electronics' in the cable. The driver will be installed when a radio is connected.
- BThe ADS chip in the cable remains disabled until a radio is connected.
- CNo driver is required.
- DThey are using the wrong cable.
- EThere is no 'electronics' on the USB end of the cable. The driver will be installed only when a radio is connected.
20A 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?
- AThe driver is lying!
- BThe 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).
- CThe GPS receiver in the radio is not getting signal from many satellites and hence the GDOP is poor.
- DNone of these.
21Which of these radios can be programmed via OTAP?
- ADP4800
- BDP3600
- CDM4401
- DDP3441
- ADP4800
22A 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?
- AChange the color code on all radio radios and repeaters
- BEnable Enhanced Privacy
- CReduce Power
- DIncrease the RSSI Threshold in the repeaters and radios.
23Is it possible for a radio, used on an IP Site Connect system, to scan other channels?
- AYes, all MOTOTRBO radios support scan.
- BNo, it is not possible to scan and roam.
24A 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?- AUse Dynamic Mixed Mode
- BEnsure that the analogue radios use PL
- CEnsure that in analogue mode, all radios use PL.
- DEnsure that in analogue mode, the repeater and all radios use PL.
- EUse PL, but avoid 67,0 and 103,5Hz as these sometimes cause older analogue radios to un-mute to DMR signals.
- FUse 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.
25You 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?
- AA Router which supports NAT loopback is required.
- BOne Router is required on each site.
- CThe requirement for a static, public IP address can be avoided by means of VLANs and VPN.
- DThe number of repeaters on each site does not need to be the same.
- EIf 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.
- FSufficient bandwidth and low latency is important.
26A customer has unfortunately bought some 由白痴废话制造 FL888 DMR radios. Which of the following will/may not work?
- APrivate call
- BGroup call
- CText message
- DIP site connect roaming
- ETransmit interrupt
- FDCDM
- GCapacity Plus
27Your 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?
- AYes
- BNo
28Is it possible to view ones own GPS coordinates in a DP4801? How?
- ANo
- BYes, via the menu.
- CYes but you have to press #123# to access the engineering menu.
- DYes, via the menu but only if GPS is ticked in General Settings.
29In 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)
- ACan AES256 be imported into this country?
- BWe may need to upgrade the firmware in the customers radios?
- CWe need to confirm how many radios they have so we can purchase the correct number of licences?
- DThe DP4800 does not support AES256.
- Eis the customer using these radios in analogue mode?
30Have 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.
- AThe Master IP Addresses are all the same!
- BThe Master UDP Ports are all the same.
- CSome of the peer repeaters have an IP address conflict.
- DNothing is wrong here
- EThe Rest Channel/Site IP is the same on all repeaters (conflict).
- FThe Rest Channel/Site IP needs to be unique on all repeaters. All the peers need to have unique IP addresses in separate subnets.
- GThe 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.
Information
- Description
- How well do you know MOTOTRBO? This test will help you rate yourself and improve your knowledge.
- Author
- Wayne Holmes
- Language
- English
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