MOTOTRBO Knowledge Test

Frage 1 von 30

1

The above radio's configuration can be managed in Radio Management?

Wähle eins der folgenden:

WAHR
FALSCH

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Frage 2 von 30

1

Where would MNIS and DDMS be used in a MOTOTRBO system?

Wähle eine der folgenden:

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.

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Frage 3 von 30

1

In IP Site Connect, the repeater beacon does what?

Wähle eine der folgenden:

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.

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Frage 4 von 30

1

In Linked Capacity Plus, the Master repeater must have the following properties/configuration?

Wähle eine der folgenden:

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.

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Frage 5 von 30

1

In Linked Capacity Plus, does the number of repeaters per site have to be the same on each site?

Wähle eine der folgenden:

Yes
No

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Frage 6 von 30

1

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?

Wähle eine der folgenden:

Continue working with some issues.
Probably stop working.
Probably continue working, but the reliability cannot be assured.
None of these.

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Frage 7 von 30

1

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.

Wähle eine der folgenden:

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.

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Frage 8 von 30

1

The diagram shows three possible antenna configurations. Assuming the frequency separation allows it, which of these options would be the best choice?

Wähle eine der folgenden:

A
B
C

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Frage 9 von 30

1

Which of the below statements best describe what is de-sensing and how would one confirm the presence of it?

Wähle eine der folgenden:

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.

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Frage 10 von 30

1

Which one of the below statements best describe how Manual Site Roam works, in IP Site Connect?

Wähle eine der folgenden:

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.

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Frage 11 von 30

1

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)

Wähle eine oder mehr der folgenden:

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.

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Frage 12 von 30

1

Which of the following statements best describe MOTOTRBO Linked Capacity Plus?

Wähle eine oder mehr der folgenden:

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.

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Frage 13 von 30

1

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.

Wähle eine oder mehr der folgenden:

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.

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Frage 14 von 30

1

In Capacity Plus, what would be the result of setting the RSSI Threshold in the repeater channel to -124dBm?

Wähle eine der folgenden:

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.

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Frage 15 von 30

1

What would be the result of setting the RSSI Threshold in the Radio’s channel to -124dBm?

Wähle eine der folgenden:

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.

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Frage 16 von 30

1

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.

Wähle eine der folgenden:

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.

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Frage 17 von 30

1

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)

Wähle eine oder mehr der folgenden:

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.

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Frage 18 von 30

1

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.

Wähle eins der folgenden:

WAHR
FALSCH

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Frage 19 von 30

1

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?

Wähle eine der folgenden:

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.

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Frage 20 von 30

1

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?

Wähle eine der folgenden:

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.

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Frage 21 von 30

1

Which of these radios can be programmed via OTAP?

Wähle eine oder mehr der folgenden:

DP4800
DP3600
DM4401
DP3441

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Frage 22 von 30

1

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?

Wähle eine der folgenden:

Change the color code on all radio radios and repeaters
Enable Enhanced Privacy
Reduce Power
Increase the RSSI Threshold in the repeaters and radios.

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Frage 23 von 30

1

Is it possible for a radio, used on an IP Site Connect system, to scan other channels?

Wähle eine der folgenden:

Yes, all MOTOTRBO radios support scan.
No, it is not possible to scan and roam.

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Frage 24 von 30

1

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?

Wähle eine oder mehr der folgenden:

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.

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Frage 25 von 30

1

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?

Wähle eine oder mehr der folgenden:

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.

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Frage 26 von 30

1

A customer has unfortunately bought some 由白痴废话制造 FL888 DMR radios. Which of the following will/may not work?

Wähle eine oder mehr der folgenden:

Private call
Group call
Text message
IP site connect roaming
Transmit interrupt
DCDM
Capacity Plus

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Frage 27 von 30

1

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?

Wähle eine der folgenden:

Yes
No

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Frage 28 von 30

1

Is it possible to view ones own GPS coordinates in a DP4801? How?

Wähle eine der folgenden:

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.

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Frage 29 von 30

1

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)

Wähle eine oder mehr der folgenden:

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?

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Frage 30 von 30

1

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.

Wähle eine oder mehr der folgenden:

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.

	Erstellt von Wayne Holmes vor etwa 10 Jahre

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Frage 1 von 30

The above radio's configuration can be managed in Radio Management?

Wähle eins der folgenden:

Erklärung

Frage 2 von 30

Where would MNIS and DDMS be used in a MOTOTRBO system?

Wähle eine der folgenden:

Erklärung

Frage 3 von 30

In IP Site Connect, the repeater beacon does what?

Wähle eine der folgenden:

Erklärung

Frage 4 von 30

In Linked Capacity Plus, the Master repeater must have the following properties/configuration?

Wähle eine der folgenden:

Erklärung

Frage 5 von 30

In Linked Capacity Plus, does the number of repeaters per site have to be the same on each site?

Wähle eine der folgenden:

Erklärung

Frage 6 von 30

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?

Wähle eine der folgenden:

Erklärung

Frage 7 von 30

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.

Wähle eine der folgenden:

Erklärung

Frage 8 von 30

The diagram shows three possible antenna configurations. Assuming the frequency separation allows it, which of these options would be the best choice?

Wähle eine der folgenden:

Erklärung

Frage 9 von 30

Which of the below statements best describe what is de-sensing and how would one confirm the presence of it?

Wähle eine der folgenden:

Erklärung

Frage 10 von 30

Which one of the below statements best describe how Manual Site Roam works, in IP Site Connect?

Wähle eine der folgenden:

Erklärung

Frage 11 von 30

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)

Wähle eine oder mehr der folgenden:

Erklärung

Frage 12 von 30

Which of the following statements best describe MOTOTRBO Linked Capacity Plus?

Wähle eine oder mehr der folgenden:

Erklärung

Frage 13 von 30

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.

Wähle eine oder mehr der folgenden:

Erklärung

Frage 14 von 30

In Capacity Plus, what would be the result of setting the RSSI Threshold in the repeater channel to -124dBm?

Wähle eine der folgenden:

Erklärung

Frage 15 von 30

What would be the result of setting the RSSI Threshold in the Radio’s channel to -124dBm?

Wähle eine der folgenden:

Erklärung

Frage 16 von 30

Wähle eine der folgenden:

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Frage 17 von 30

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)

Wähle eine oder mehr der folgenden:

Erklärung

Frage 18 von 30

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.

Wähle eins der folgenden:

Erklärung

Frage 19 von 30

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?

Wähle eine der folgenden:

Erklärung

Frage 20 von 30

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?