Dante Level 3 Test Questions and Answers Already Passed

Dante Level 3 Test Questions and Answers Already Passed Describe follower, primary clock leader, and boundary clock follower: a device that accepts a clock from another source primary clock leader: a device that is the original time reference for all other devices on the network. boundary clock. A device that accepts a clock from another source, then feeds that clock to other devices. Are dante flows unicast or multicast by default? Unicast Does dante domain manager subscribe to other networks when the transmitter is multicast? Yes. Dante domain manager can take multicast from a transmitter and send it as unicast across a router to another subnet. A campus network has different subnets for each of the twenty buildings. A project calls for a system design where Dante devices would be present in every building. The VLANs are connected by standard inter-VLAN routing. Dante Domain Manager is present in the design. Can we establish a single dante domain for all the background music and paging equipment across the entire campus, throughout all subnets? Yes. We will need to make sure we have enough flows to cover the unicast feeds, but otherwise this is fine. When we share sources from one domain to another, how much control do we have? we have a choice between sharing channels to all domains in a group, or for more customization, we can choose which channels are available in each domain. If all dante devises are enrolled in dante domain manager and a random person connects to your network and launches dante controller, will they be able to see anything? No. Dante controller will not show any devices on DDM until you have entered your credentials. How does dante controller discover a new device when it is first connected to the network? dante controller listens for an mDNS "discovery" announcement at 224.0/0/251:5353 You have a system design with about 1000 devices spread across a property. The IT administrator insists you segment the broadcast domain. You know audio/video signals need to flow between major systems throughout the property. What steps do you need to do? Break the network into VLANs, use unique subnets for each VLAN and connect them with inter-VLAN routing. Add Dante Domain Manager to manage and coordinate devices across the layer 3 network. When Troubleshooting a system, what order (in terms of concepts) do we start at and work off from? Connectivity--- clocking---Subscriptions---Latency True or false: Dante devices have an unlimited number of receive flows. False When dante devices are in red on dante controller, what might this mean? Dante devices are in a different subnet than the computer running Dante Controller. Dante controller might be expecting to see devices on the primary network, but it is connected to the secondary (or vice versa). What can you use to automatically discover a large number of devices across multiple subnets? DNS-SD color meanings green: in a managed system, these channels are shared from a device in another domain. red: a dante device is discovered in the network, but it is in the wrong subnet or you have primary/secondary reversed. black: a normal dante device properly recognized on the network. In a dante domain manager system, what happens if we enable unicast clocking for a second device in the subnet? Va clock leader will be elected for the subnet. The other device will be follower and will be ready to take over in case the leader is no longer present in the network. Dante devices remember their settings through power cycles, so they restore functionality when they come back up. Of course, a subscription is made between a transmitter and a receiver-so which device remembers the connections that need to be made? The receiver Scenario: You are the AV manager for a facility that has an auditorium, meeting spaces, and background music/paging system all on a flat, Layer 2 network. There are only about 40 devices and this is on a dedicated network, so it works just fine. The technicians in the auditorium often change subscriptions on their devices as different events roll through, but the other domains do not require custom patching much. From time to time, the AV technicians mistakenly patch to devices in the meeting spaces or BGM system. That in turn breaks patching that was already in pace. The technicians don't always realize they made a mistake, at which point someone needs to go and figure out what went wrong. We could certainly use a dante preset to quickly restore the BGM and meeting spaces when this sort of thing happens, but that is after the fact and after the problem has been seen by others. What could be done to prevent these Add dante domain manager, and place the auditorium in a separate domain from the other functional groups. In a network switch, imagine that two switch ports simultaneously receive data for the same destination switch port. What happens? Assume no traffic management such as QoS has been engaged. Whichever message processors see first will go first-the other is placed in a queue and will be sent when bandwidth is available. What is the range of DSCP values? 0-56 If we were to engage QoS to prioritize PTP, which DSCP value should be elevated? 56 What IP range do multicast streams use? 224.0.0.0/4 An ARP request is a ______ message, and the reply to that request is a_____ message. broadcast, unicast How does multicast act without IGMP snooping? Acts like broadcast. What port does multicast audio go to? UDP port 4321 You can see al the IP address and MAC address associations your system knows about by going to the command line and typing: arp-a Describe Layer 1-4 Layer 1: Hardware, electrical and optical connections Layer 2: source and destination MAC addresses Layer 3: source and destination IP addresses Layer 4: Network protocol as well as source and destination IP port Seven Layers of the OSI model 1. Physical 2. Datalink 3. Network 4. Transport 5. Session 6. Presentation 7. Application Which types of traffic will a router not pass? multicast, broadcast True or false: DNS resolves a domain name to an IP address and IP port number. False Scenario: A Dante system is using a mix of devices with 1Gbps and 100Mbps ports. The system has been running continuously for a week, though the system operators suggest they hard occasional audio distortion. You notice audio multicast bandwidth has accumulated to 30 Mbps. What would be the most likely solution for this? Engage IGMP snooping (and a querier). True or false: switches can discover multiple MAC addresses though a single switch port. True When designing a Dante network from scratch, which of the following should be considered? Sizing trunk lines for worst case traffic loads. To forward a unicast message to its destination, a network switch examines the packets_____ MAC address Your device has an IP configuration of 10.01.1.116/24. You successfully ping a device at 10.0.2.116. If you go to the command line and type arp-a, will 10.0.2.116 show up in the ARP list? No True or false: To achieve inter VLAN routing, you can use. a hardware router or a layer 3 switch. True Determine the network connections for these multiast flows: Discovery Clocking (sync) Audio/Video Streams (multicast) Clocking (PTP signal) Dante Traffic Monitoring. discovery: 224.0.0.251:5353 clocking (sync):224.0.1.129to 224.0.1.132, ports 319 and 320. Audio/video streams (multicast):239.255.x.x., port 4321 Clocking (PTP signal): 239.254.3.3:9998 Dante Traffic Monitoring: 224.0.0.230 to 224.0.0.233,ports 8700 to 8708. An ARP request begins with an_____ and attempts to find the associated______ IP address, MAC address How does IANA standardize port numbers? Protocols are in the lower number range dynamic, ad-hoc connections use higher port ranges.