Dante Level 3 UPDATED Actual Exam
Questions and CORRECT Answers
SCENARIO: You have a Dante system that seems to be functioning correctly, there are no
external word clocks configured, no preferred master configured, but there are still a number
of devices that report they are losing sync occasionally. What steps would you take to find the
root cause of the problem? - CORRECT ANSWER- ✔✔-You suspect that multicast traffic is
not able to traverse the network in both directions (i.e. from master to all slaves, and from all
slaves to the master). To check if this is the case you enable unicast delay requests on the
slaves, then monitor the clock status histogram for evidence of disruption in PTP. When this
resolves the problem you suspect that ACLs blocking multicast on UDP ports 319 and 320 in
a direction from the slave to the master is to blame.
-If IGMP Snooping is enabled, you test the system with no audio and IGMP Snooping turned
off. When this resolves the problem you suspect that IGMP snooping has been interfering
with the distribution of multicast traffic between the slaves and the master. You enable unicast
delay requests on all slaves to reduce the amount of multicast traffic that the switches need to
track via IGMP.
Switches look at ________ - CORRECT ANSWER- ✔✔Destination MAC addresses to
forward frames
Things to consider when building a network from scratch: - CORRECT ANSWER-
✔✔Sizing links for worst case traffic loads
Dante automatically changes a unicast flow to a multicast flow when necessary. - CORRECT
ANSWER- ✔✔False
Dante uses ______ DSCP tags. - CORRECT ANSWER- ✔✔4
Apart from separate cabling, a ________ can be used to separate broadcast domains. -
CORRECT ANSWER- ✔✔VLAN
In a [________] transaction bandwidth is only consumed on the [________] path between a
receiver and a transmitter. - CORRECT ANSWER- ✔✔unicast, shortest
, A session is ________ - CORRECT ANSWER- ✔✔an instance when a connection between
two devices is created to transfer data
A Dante device can have an unlimited number of receive flows. - CORRECT ANSWER-
✔✔False
How do you find out how many transmit flows you are using? - CORRECT ANSWER-
✔✔Tx tab in Dante controller
An ARP whohas message is ________ - CORRECT ANSWER- ✔✔Broadcast
Giving an external word-clock to a Dante device replaces its internal clock. - CORRECT
ANSWER- ✔✔False
IGMP snooping listens for reports to [________] messages in order to restrict [________]
traffic. - CORRECT ANSWER- ✔✔IGMP query, multicast
ARP tables are held in nodes - CORRECT ANSWER- ✔✔True
Match these layer numbers to the corresponding layer names in the OSI model: - CORRECT
ANSWER- ✔✔Layer 7 - Application
Layer 6 - Presentation
Layer 5 - Session
Layer 4 - Transport
Layer 3 - Network
Layer 2 - Datalink
Layer 1 - Physical
Dante devices have a set number of flows. - CORRECT ANSWER- ✔✔True
Questions and CORRECT Answers
SCENARIO: You have a Dante system that seems to be functioning correctly, there are no
external word clocks configured, no preferred master configured, but there are still a number
of devices that report they are losing sync occasionally. What steps would you take to find the
root cause of the problem? - CORRECT ANSWER- ✔✔-You suspect that multicast traffic is
not able to traverse the network in both directions (i.e. from master to all slaves, and from all
slaves to the master). To check if this is the case you enable unicast delay requests on the
slaves, then monitor the clock status histogram for evidence of disruption in PTP. When this
resolves the problem you suspect that ACLs blocking multicast on UDP ports 319 and 320 in
a direction from the slave to the master is to blame.
-If IGMP Snooping is enabled, you test the system with no audio and IGMP Snooping turned
off. When this resolves the problem you suspect that IGMP snooping has been interfering
with the distribution of multicast traffic between the slaves and the master. You enable unicast
delay requests on all slaves to reduce the amount of multicast traffic that the switches need to
track via IGMP.
Switches look at ________ - CORRECT ANSWER- ✔✔Destination MAC addresses to
forward frames
Things to consider when building a network from scratch: - CORRECT ANSWER-
✔✔Sizing links for worst case traffic loads
Dante automatically changes a unicast flow to a multicast flow when necessary. - CORRECT
ANSWER- ✔✔False
Dante uses ______ DSCP tags. - CORRECT ANSWER- ✔✔4
Apart from separate cabling, a ________ can be used to separate broadcast domains. -
CORRECT ANSWER- ✔✔VLAN
In a [________] transaction bandwidth is only consumed on the [________] path between a
receiver and a transmitter. - CORRECT ANSWER- ✔✔unicast, shortest
, A session is ________ - CORRECT ANSWER- ✔✔an instance when a connection between
two devices is created to transfer data
A Dante device can have an unlimited number of receive flows. - CORRECT ANSWER-
✔✔False
How do you find out how many transmit flows you are using? - CORRECT ANSWER-
✔✔Tx tab in Dante controller
An ARP whohas message is ________ - CORRECT ANSWER- ✔✔Broadcast
Giving an external word-clock to a Dante device replaces its internal clock. - CORRECT
ANSWER- ✔✔False
IGMP snooping listens for reports to [________] messages in order to restrict [________]
traffic. - CORRECT ANSWER- ✔✔IGMP query, multicast
ARP tables are held in nodes - CORRECT ANSWER- ✔✔True
Match these layer numbers to the corresponding layer names in the OSI model: - CORRECT
ANSWER- ✔✔Layer 7 - Application
Layer 6 - Presentation
Layer 5 - Session
Layer 4 - Transport
Layer 3 - Network
Layer 2 - Datalink
Layer 1 - Physical
Dante devices have a set number of flows. - CORRECT ANSWER- ✔✔True
