DANTE Level 3 -
Comprehensive Questions
(Frequently Tested) with
Verified Answers.
A Dante system is running on a converged enterprise network. Clocking and discovery are working OK,
but audio only passes in unicast. You conclude that a firewall is blocking your multicast audio packets.
What port would you ask the IT administrator to unblock? - Answer: UDP 4321
If 5 unicast channels are sent between two devices, how much bandwidth, and how many flows are
being used? (sample rate 48KHz/24-bit) - Answer: 12 mbps, and 2 flows
Dante media clock synchronization is more accurate than [...] between any two devices on the network
(Select the most accurate variance we guarantee) - Answer: 1 micro sec
If 3 channels are being sent within 1 unicast flow, how much bandwidth is being used? (sample rate
48KHz/24-bit) - Answer: 6mbps
Routers do not use IP addresses, they only use MAC addresses. - Answer: FALSE
On a Unicast transmission, a transmitter and receiver have latency settings of 0.25 msec and 1.00 msec,
respectively. When will the audio playout of the receiving device?
1 milli seconds - Answer: 1 milli seconds
A Dante device can have an unlimited number of receive flows. - Answer: FALSE
It is a best practice (and strongly suggested) to designate unique IP subnets to each VLAN. Among other
things, you'll be able to use a router to connect the devices across VLANs (via unicast). - Answer: TRUE
How much bandwidth does a unicast audio flow use? (Assume 48kHz, 24-bit.) - Answer: 6mbps
, A multicast flow is initiated by a transmitter alone. - Answer: TRUE
A switch populates its [...] by observing the source [...] of ARP requests and responses passing through. -
Answer: Mac Address Table
MAC Addresses
IGMP snooping listens for reports to [...] messages in order to restrict [...] traffic. - Answer: IGMP query,
multicast
The amount of bandwidth used by a multicast flow varies based on number of transmitting channels. -
Answer: TRUE
When you know you will be configuring switches with features like IGMP Snooping, there is no
hesitation in combining managed switches from different manufacturers in your design. - Answer: FALSE
How can you find out how many transmit flows a device is using? - Answer: In Dante Controller, go to
Device View, Tx tab
Dante devices automatically change unicast flows to multicast when a fan-out is detected. - Answer:
False
A Dante system is using a mix of Brooklyn II (1Gbps) and Ultimo (100Mbps) devices. The system has run
continuously for at least 5 days, though system operators suggest they hear occasional sound
distortions. You notice audio multicast bandwidth has accumulated to 90Mbps. What would be the
potential solution for this? - Answer: Turn on IGMP Snooping
When a system will implement redundant networks, the preferred method for commissioning is: -
Answer: Bring one network online at a time, ensuring devices are property set for redundant and you
have the expected operation on each network. Once you are satisfied, bring both networks online
together.
Diffserv QoS uses [...] tags. - Answer: DSCP
Comprehensive Questions
(Frequently Tested) with
Verified Answers.
A Dante system is running on a converged enterprise network. Clocking and discovery are working OK,
but audio only passes in unicast. You conclude that a firewall is blocking your multicast audio packets.
What port would you ask the IT administrator to unblock? - Answer: UDP 4321
If 5 unicast channels are sent between two devices, how much bandwidth, and how many flows are
being used? (sample rate 48KHz/24-bit) - Answer: 12 mbps, and 2 flows
Dante media clock synchronization is more accurate than [...] between any two devices on the network
(Select the most accurate variance we guarantee) - Answer: 1 micro sec
If 3 channels are being sent within 1 unicast flow, how much bandwidth is being used? (sample rate
48KHz/24-bit) - Answer: 6mbps
Routers do not use IP addresses, they only use MAC addresses. - Answer: FALSE
On a Unicast transmission, a transmitter and receiver have latency settings of 0.25 msec and 1.00 msec,
respectively. When will the audio playout of the receiving device?
1 milli seconds - Answer: 1 milli seconds
A Dante device can have an unlimited number of receive flows. - Answer: FALSE
It is a best practice (and strongly suggested) to designate unique IP subnets to each VLAN. Among other
things, you'll be able to use a router to connect the devices across VLANs (via unicast). - Answer: TRUE
How much bandwidth does a unicast audio flow use? (Assume 48kHz, 24-bit.) - Answer: 6mbps
, A multicast flow is initiated by a transmitter alone. - Answer: TRUE
A switch populates its [...] by observing the source [...] of ARP requests and responses passing through. -
Answer: Mac Address Table
MAC Addresses
IGMP snooping listens for reports to [...] messages in order to restrict [...] traffic. - Answer: IGMP query,
multicast
The amount of bandwidth used by a multicast flow varies based on number of transmitting channels. -
Answer: TRUE
When you know you will be configuring switches with features like IGMP Snooping, there is no
hesitation in combining managed switches from different manufacturers in your design. - Answer: FALSE
How can you find out how many transmit flows a device is using? - Answer: In Dante Controller, go to
Device View, Tx tab
Dante devices automatically change unicast flows to multicast when a fan-out is detected. - Answer:
False
A Dante system is using a mix of Brooklyn II (1Gbps) and Ultimo (100Mbps) devices. The system has run
continuously for at least 5 days, though system operators suggest they hear occasional sound
distortions. You notice audio multicast bandwidth has accumulated to 90Mbps. What would be the
potential solution for this? - Answer: Turn on IGMP Snooping
When a system will implement redundant networks, the preferred method for commissioning is: -
Answer: Bring one network online at a time, ensuring devices are property set for redundant and you
have the expected operation on each network. Once you are satisfied, bring both networks online
together.
Diffserv QoS uses [...] tags. - Answer: DSCP
