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Dante Level 1 Certification | ACCURATE

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QUESTIONS

what settings are managed and unmanaged switches good in?

• CORRECT ANS-unmanaged is good in small dedicated audio networks; managed switches are good in "mixed" and/or heavily loaded networks are EEE/green switches a good choice for Dante?
• CORRECT ANS-no name some issues with daisy chaining
• CORRECT ANS-doesn't work well for low latency due to switch hops, issues with one device causes issue for all devices in chain what is the recommended style of network topology for Dante?
• CORRECT ANS-star aka hub formation star formation
• CORRECT ANS-all devices are connected to a single switch multiple star formation
• CORRECT ANS-a switch joins two or more stars together to form a larger network

what are the three network layers?

• CORRECT ANS-layer 1: physical connections; layer 2: data link (devices represented by fixed hardware address); layer 3: devices assigned variable IP addresses should you use automatic or manual IP addresses with Dante?
• CORRECT ANS-automatic direct communication is only available between devices in the same ________
• CORRECT ANS-IP address range LAN
• CORRECT ANS-local area network; contains a small number of devices with a common address range stand alone network
• CORRECT ANS-a single LAN dedicated to one purpose; not connected to other LANs what are stand alone networks often used for?
• CORRECT ANS-to separate the responsibilities of the AV installer how does automatic addressing work in Dante?
• CORRECT ANS-when devices are connected together, Dante will self-assign addresses that create a working LAN what is Dante?
• CORRECT ANS-a hardware and software solution that transports precisely timed digital audio between devices using standard IP networking

positive features and benefits of Dante

• CORRECT ANS-audio is synced to tolerance of < 1 microsecond; devices are discovered automatically, low latency and nearly jitter-free; automatic reconnection after power cycle how many channels per link is Dante capable of?
• CORRECT ANS-512 x 512 only Dante channels using the same ______________ can connect
• CORRECT ANS-sample rate a higher sample rate in Dante results in
• CORRECT ANS-smaller humber of channels for the same bandwidth latency in Dante is
• CORRECT ANS-deterministic default latency of Dante
• CORRECT ANS-1 ms; can be set lower or higher how does Dante handle clocking?
• CORRECT ANS-automatically; uses election process to choose the best clock master among devices what does Dante not do?
• CORRECT ANS-sample rate conversion, MIDI, level control, SMPTE time code, control data Dante Controller

• CORRECT ANS-primary software tool used for routing, clocking adjustments, sample rate/latency settings, clock quality do Dante configurations live in devices or on your computer?
• CORRECT ANS-devices can a Dante device be connected directly to a computer?
• CORRECT ANS-yes subscriptions
• CORRECT ANS-Dante connections in Controller in Controller, transmitter channels are on the ___ axis and receiver channels are on the ____ axis
• CORRECT ANS-x, y how do you create a subscription in Dante?
• CORRECT ANS-click at the intersection of the desired transmit and receive channels how do you delete a subscription in Dante?
• CORRECT ANS-click on the green checkmark at the intersection of the desired transmit and receive channels how do you create a split in Dante?
• CORRECT ANS-click at the intersections of the transmit channel and multiple receiver channels when does Dante recommend using multicast?

• CORRECT ANS-when splitting to more than three receivers how do you name devices in Dante Controller?
• CORRECT ANS-go to Routing View --> Device Config tab how do you adjust the sample rate in Dante Controller?
• CORRECT ANS-go to Device View --> Device Config tab are subscriptions reestablished after a power cycle or reconnection?
  • CORRECT ANS-yes when does Dante Controller need to be on the network?
  • CORRECT ANS-only when you need to make a change does Dante alter audio data in any way?
• CORRECT ANS-no subscriptions can only be made between devices running the same _____
• CORRECT ANS-sample rate and bit depth Dante Virtual Soundcard
• CORRECT ANS-software that connects to a Dante network and can be used to record and/or playout directly on a computer how do you connect to a DAW in Dante Virtual Soundcard?
  • CORRECT ANS-launch DVS, set the number of channels, and start DVS; DVS will then appear as an audio device on the computer

how do you subscribe channels in Dante Virtual Soundcard?

• CORRECT ANS-open Controller on the same computer or different computer on the same Dante network computer with DVS will appear as a Dante device. Dante transmit channels can then be sent to DVS receiver channels and through to DAW software pulse code modulation
• CORRECT ANS-a method used to digitally represent analog signals Nyquist frequency rule
• CORRECT ANS-samples must be taken at twice the maximum audio frequency higher bit depth results in a higher or lower number of possible amplitudes
  • CORRECT ANS-higher increasing the sample rate and bit depth leads to a __________ bandwidth
• CORRECT ANS-higher formula for audio bandwidth
• CORRECT ANS-sample rate x bit depth the standard gigabit connection on a network allows for how many mbits/sec?
  • CORRECT ANS- 1000 word clock
• CORRECT ANS-clock that determines where in the data an audio sample begins fault state
• CORRECT ANS-in Dante, a state in which values are different due to incorrect clock sync

jitter - CORRECT ANS-distortion from inconsistent word clock playout what are the old and new (Dante) solutions for clocking? - CORRECT ANS-old solution- use an external master clock; Dante solution- use clock synchronization method speed of sound - CORRECT ANS-343 m/s latency - CORRECT ANS-audio signal delay in a system from transport and/or processing the three components of modern small networks - CORRECT ANS-things you connect, switches, and cables what cabling is used for Dante in short runs? - CORRECT ANS-CAT5/CAT what cabling is used for Dante in long runs? - CORRECT ANS-fiber what kind of ports does fiber cabling require? - CORRECT ANS-SFP ports switch - CORRECT ANS-device that connects devices on a common network is WiFi compatible with Dante audio? - CORRECT ANS-no unmanaged switch - CORRECT ANS-plug and play, no adjustments or settings available managed switch - CORRECT ANS-has many options, allows for tests and adjustments

On a Dante Network, there must be a different clock leader for each sample rate on the network. - CORRECT ANS-One clock leader will provide synchronization to all Dante devices, regardless of their individual sample rates or frame rates A 1Gbps network switch can manage more Dante channels than a single 1Gbps link can? - CORRECT ANS-A nonblocking network switch will be able to handle the total of all ports capacity at all times. An audio subscription (connection) can be established between two Dante interfaces operating at different bit depths. - CORRECT ANS-Like most digital audio devices, Dante devices will usually be able to add missing bits or truncate extraneous bits to match the expected internal operation. A Dante audio subscription (connection) can be established between two Dante interfaces operating at different audio sample rates. - CORRECT ANS-Each Dante interface can only operate at one sample rate at a time. What audio sample rates are supported by Dante? - CORRECT ANS-Dante supports most common sample rates from 44.1kHz to 192kHz. If we increase the sample rate of a device from 48kHz to 96kHz, what is the impact to the network? - CORRECT ANS-A 96kHz subscription will require (roughly) twice as much bandwidth as a 48kHz subscription. The bit depth of an audio system dictates: - CORRECT ANS-the resolution of the audio signals amplitude. A greater bit depth increases dynamic range. The sample rate of an audio system dictates: - CORRECT ANS-the audii resolution in time. According to the Nyquist Theorem, the sample rate must be at least twice the highest audio frequency to be captured. Dante audio is sent: - CORRECT ANS-uncompressed, bit-perfect.

Roughy how many channels of 24-bit,48kHz audio can be carried on a 1Gbps connection? - CORRECT ANS-512x Dante AV devices send and receive uncompressed audio and is completely compatible with Dante audio devices - CORRECT ANS-Dante AV devices transport audio and video in separate essences so it is possible for a Dante AV device to send its audio channels to a Dante Audio device and vice-versa Dante AV is available in a variety of video codecs. What video codec is used by "Dante AV Ultra" that was discussed in this class? - CORRECT ANS-Compressed using a visually lossless JPEG codec. Dante AV Ultra uses a JPEG2000 video codec and a 1Gbps connection. What is its maximum supported resolution(s) and frame rate(s)? Expressions here are shown in resolution, interlaced/progressive, framerate. For example, 1080p30 means 1920x1080, progressive, 30fps. - CORRECT ANS-Up to 4Kp Dante AV devices have a scaler in it. What does the scaler affect? - CORRECT ANS-The scaler can adapt screen resolution. (i.e. - it can scale a 4K source to 1080p for display) Which answer best describes the JPEG2000 encoding process? - CORRECT ANS-There is a "visually lossless" impact on the first encoding. Further encode/decode processes will experience no further loss. Interlaced video draws all the odd lines, then all the even lines. This creates two "fields" for each frame. - CORRECT ANS-The interlaced signal contains two fields of a video frame captured consecutively. This enhances motion perception to the viewer, and reduces flicker. JPEG2000 codecs are used in digital cinema rooms today. It is visually lossless, providing excellent results for both video and computer graphics (like spreadsheets and slide

presentations). - CORRECT ANS-The JPEG2000 offers sharp quality and intense colour definition with a visual accuracy. It is well-adopted in professional use cases. What factors significantly affect the overall bandwidth demands of a compressed video flow? (Select all that apply.) - CORRECT ANS-The video frame resolution (i.e. - 1080p vs 4K) The chroma sampling (i.e. - 4:4:4 vs 4:2:0) The frame rate (ie 24fps vs 60fps) On a Dante network, a single clock leader is established to manage all audio sample rates and video frame rates. - CORRECT ANS-A single Clock Leader on the network is able to keep all followers synchronised, regardless of their sample-rates or frame-rates. JPEG2000 codecs process video frames in groups. If a packet is corrupted, the picture will automatically recover when the current group of frames ends and the next keyframe arrives. It could be several frames. - CORRECT ANS-The JPEG2000 codec is an intraframe codec capturing each frame individually. Which IP Range is not designated for use on a local network? - CORRECT ANS-8.8.. Many Dante products will provide a Dante port and "Manufacturer Control" port that is totally separate. The separate port might be used to remote control a mixer, program a DSP, or steer a PTZ camera. How do you set the IP address for the manufacturer's control port? - CORRECT ANS-Read the instruction manual for the product. Setting the manufacturer's control port is unrelated to Dante, and thus it can be different for each product line. On a network switch, any cable can plug in anywhere. However, a best practice for cable management is to start

• from the first port working your way up and
• from the last port working your way backwards. - CORRECT ANS-network endpoints, trunk lines

If a device has obtained an IP address using Link Local, which IP configuration would be within its subnet - CORRECT ANS-IP Address: 169.254.189.23 Subnet Mask: 255.255.0. Neutrik etherCON ports must be populated by Neutrik etherCON cables. - CORRECT ANS-The Neutrik etherCON port provides an RJ45 at the center and thus it does accept standard Ethernet cables. What IP addressing methods are available for Dante devices? (Select all that apply.) - CORRECT ANS-DHCP Dynamic Host Configuration Protocol Link Local Static IP Addressing Which statements are true about Dante and switches to connect them? (Select two.) - CORRECT ANS-Some Dante devices can daisy-chain, allowing small systems to run without the need for an external network switch. Unmanaged switches may be fine for small systems. Many Dante products will provide a Dante port and "Manufacturer Control" port that is totally separate. The separate port might be used to remote control a mixer, program a DSP, or steer a PTZ camera. When this manufacturer control port is provided, it is sometimes exposed on its own network connection, sometimes it is merged with an internal network switch so it appears through the Dante Primary port. - CORRECT ANS-True False Which of these are network topology methods were discussed for connecting Dante and Dante AV devices? (Select two.) - CORRECT ANS-star spiral daisy chain (also known as switched) hook and ladder

When using category cable, what type is recommended? - CORRECT ANS-CAT5e or better. When choosing a network switch, what minimum speed is suggested? - CORRECT ANS-1 Gbit switch Which statement is true about PoE: - CORRECT ANS-Each PoE device will draw only the power it needs. Manufacturers typically list the power draw of their PoE devices - you can add the total plus a cushion (perhaps 20%). Tell me about Energy Efficient Ethernet (EEE) - CORRECT ANS-It should be disabled on Dante network (or any real-time network). While it can save a bit of energy, it is known to cause data interruptions that can skew clocking (synchronization) and cause audio/video dropouts. If a device has an IP address of 192.168.15.12 and a subnet mask of 255.255.255.0, which IP address would be within its subnet? - CORRECT ANS-192.168.15. What type of network connections should be used to transport Dante traffic? (Select all that apply.) - CORRECT ANS-Fiber optic connections - common for 1Gbit or faster in link lengths of 300m-500m. These can go for kilometers. CAT5e or better for 1Gbit links up to 100m in length. WiFi can only be used for control data. No audio or video media will be transported on WiFi. A single computer can run Dante Virtual Soundcard and Dante Via at the same time. - CORRECT ANS-False Dante devices remember their settings and automatically restore on power loss or manual restart. Dante Controller does not need to be present on the network for this to happen. - CORRECT ANS-True

What features does Dante Via offer that are not found in Dante Virtual Soundcard? (Select two.) - CORRECT ANS-Routes programs to each other inside the computer Sample Rate Conversion Dante transmitters are called "sources". Dante receivers are called: - CORRECT ANS- destinations or sinks. Which of the following are diagnostic features of Dante Controller? (Select three.) - CORRECT ANS-Negotiated Port Speed and Tx/Rx Bandwidth Used Latency Monitoring Clock monitoring In Dante Controller, a green checkmark indicates: - CORRECT ANS-Subscription is successful. If a network has video devices providing content at 4Kp60 and 1080p60 as well as audio devices providing content at 96kHz and 48kHz, how many clock leaders are elected? - CORRECT ANS- 1 - one clock leader for all devices. What are Dante Application Library (DAL) and Dante Embedded Platform (DEP)? - CORRECT ANS-Ways to add Dante to products without requiring specific chipsets from Audinate. Products using these may require a separate activation process to enable Dante functionality. A connection between Dante audio and/or video channels is called: - CORRECT ANS-a subscription. What is latency (generically)? - CORRECT ANS-Latency is the amount of time required for a process to occur - we measure it from input to output of a process The same Dante audio and/or video channels can be sent to multiple receivers on the network at the same time. (In other words, the signal can be split to multiple destinations.) - CORRECT ANS-True

Dante AV sends audio and video in the same stream (essence) - CORRECT ANS-FALSE A Dante device's name and channel labels are: - CORRECT ANS-user definable and will be remembered by the device. The default Dante latency of 1 msec is: - CORRECT ANS-very low and suitable for the majority of applications. Dante is: - CORRECT ANS-A complete Audio-Video over IP (AVoIP) solution, going beyond the transport to encompass a consistent hardware/firmware/software solution for reliability, scalability and time savings. Dante audio streams over WiFi networks [are _______________________]. - CORRECT ANS-not supported The bit depth of an audio system dictates - CORRECT ANS-The amplitude resolution of each sample Does Dante support MIDI - CORRECT ANS-No. Dante only transports audio data and does not interfere with MIDI. Is there any advantage to using automatic IP addressing on a Dante network - CORRECT ANS- Yes. Automatic addressing ensures that devices create a working LAN. How are device names used in Dante - CORRECT ANS-Subscriptions are made from name to name Dante works best with [______________] switches - CORRECT ANS-gigabit On a Dante network, latency is - CORRECT ANS-deterministic, set per device

As sample rate is increased on a device, what other property is usually changed - CORRECT ANS- Channel count is reduced Where do Dante settings reside? - CORRECT ANS-On individual Dante devices In the Dante Controller Routing tab, a green check mark indicates - CORRECT ANS-Subscription successful Which of the following are diagnostic features of Dante Controller? (check all that apply) - CORRECT ANS-1. Latency monitoring

2. Clock monitoring How does Dante interact with Energy Efficient Ethernet (EEE) switches? - CORRECT ANS-EEE switches are not recommended for use with Dante When should fiber be used for an Ethernet connection? - CORRECT ANS-When runs over 100 meters are required. The easiest way to get IP addresses for a functional stand-alone Dante network is for all devices and computers to - CORRECT ANS-Use the "obtain an IP Address Automatically" setting If a network is only used for Dante and has only one network switch, then - CORRECT ANS-The network does not require a managed switch Does Dante require special network cabling? - CORRECT ANS-Regular CAT5E or CAT6 Ethernet cable is recommended How are devices added to a Dante network - CORRECT ANS-Devices are automatically discovered and displayed in Dante Controller

Dante uses [_________________________] switches. - CORRECT ANS-standard How are devices restored to a Dante network after power cycle - CORRECT ANS-Devices and connections are automatically restored What does the Dante Clock Master do - CORRECT ANS-Provides synchronization for all Dante devices on the network Does a Dante network require special configuration for clocking - CORRECT ANS-No. A Clock Master is always automatically elected by Dante A[______________] network topology is a best practice for Dante. - CORRECT ANS-star What is latency - CORRECT ANS-Latency is the audio signal delay in any audio system. Dante transmitters are sources. Dante receivers are [______________________]. - CORRECT ANS-destinations The names of devices and channels in Dante are - CORRECT ANS-User-definable and remembered by devices. The default Dante latency of 1 millisecond is - CORRECT ANS-very low and suitable for the majority of applications What are the steps to delete a subscription in Dante Controller? (drag to put steps in the correct order) - CORRECT ANS-1. Open both transmitter and receiver to expose channels

2. Click green checkmark at intersection of channels you wish to unsubscribe
3. Wait for green checkmark to disappear

Audio sent over a Dante network is - CORRECT ANS-uncompressed, bit-perfect Dante is an example of [_____________________________]. - CORRECT ANS-an audio over IP (AoIP) solution What are the steps to create a subscription in Dante Controller? (drag to put steps in the correct order) - CORRECT ANS-1. Open the transmitter and receiver to expose channels of each

2. Click at the intersection of the two channels you wish to connect
3. Wait for green check mark to appear What is a LAN - CORRECT ANS-A computer network that interconnects computers using a common range of IP addresses Dante [________________] use fiber instead of copper cable for Ethernet. - CORRECT ANS-Can Approximately how much bandwidth is consumed by 64 channels of audio @ 48kHz/24 bit- depth, excluding network overhead? - CORRECT ANS-74mbits/sec Dante devices with different sample rates can be on the same network and [__________________] subscribe channels between them. - CORRECT ANS-cannot The sample rate of an audio system dictates - CORRECT ANS-The highest audio frequency that the system can handle A connection between Dante audio channels is called - CORRECT ANS-A subscription What sample rates are supported by Dante - CORRECT ANS-Dante supports most common sample rates, from 44.1kHz up to 192kHz

What is meant by a "stand alone" Dante network - CORRECT ANS-One that is not connected to the internet or to other networks If Dante Controller is quit while audio is flowing on a Dante network, what happens - CORRECT ANS-Nothing. Dante Controller is not required to be present for a Dante network to work Do Dante devices require special IP configuration - CORRECT ANS-No, all commonly supported IP address methods are supported A gigabit connection can handle [____________] channels of Dante audio at 48kHz sample rate and 24-bit depth. - CORRECT ANS-512x Multicast Flows should be used when you - CORRECT ANS-Wish to connect a transmitter to multiple receiving devices, typically more than 3 Choose all that apply: A broadcast network connection is - CORRECT ANS-1. One to everyone.

2. Not used by Dante for audio. What does Dante redundancy do - CORRECT ANS-Feature that allows glitch-free flow of audio through a Secondary network when the Primary network fails for any reason Dante Virtual Soundcard [__________] act as the clock master for the network. - CORRECT ANS- cannot How can actual latency performance be seen - CORRECT ANS-Using the Latency monitor in Dante Controller. Dante Controller has primary and secondary network connection options - CORRECT ANS-True

How is a Dante clock master selected - CORRECT ANS-By election A multicast network connection is: - CORRECT ANS-1.One to many.

2. Useful for solving "Fan out" conditions. How can a Dante device be configured to act as a plug-and-play replacement for another - CORRECT ANS-By using identical names for both devices Dante Via and Dante Virtual Soundcard [_______________] be used at the same time on the same computer. - CORRECT ANS-cannot How do switch hops affect Dante latency - CORRECT ANS-More switch hops - > greater minimum latency. Settings above minimum are unaffected When would you select the "Enable Sync to External" box for devices on the DC Clock Status tab

• CORRECT ANS-When a device is either a) connected to an external word clock, or b) when using the internal clock of a device to drive a Dante option card How does Dante Virtual Soundcard work with DAWs - CORRECT ANS-By providing a standard Core Audio, ASIO or WDM audio interface that behaves like a regular soundcard. Select all that apply: What is Dante Via - CORRECT ANS-1.Software that allows local audio I/O & applications on your computer to access the Dante network 2.Software that provides it's own Dante system clock. How does Dante Controller inform you that multicast is recommended - CORRECT ANS-With a "Fan out' warning. A unicast network connection is - CORRECT ANS-1. Communication that is only between specific devices on a network

2. Default Dante behavior Selecting a single Dante device to be the Preferred Master [______________] force it to win the clock master election - CORRECT ANS-Will How many channels does Dante Virtual Soundcard support - CORRECT ANS-Up to 64x Dante Multicast Flows are manually created on an as needed basis - CORRECT ANS-True Dante [________________] use unicast as the default mode of transmission. - CORRECT ANS- does [_____________________] Dante devices have a secondary network capability. - CORRECT ANS-Some You [_______________] have multiple Preferred Masters in a Dante network. - CORRECT ANS- Can When should IGMP snooping be considered for use on a Dante network? - CORRECT ANS-In systems where some devices are intolerant of large amounts of multicast traffic. Can the Secondary (redundant) port on a Dante device be connected to the Primary network to increase channel count? - CORRECT ANS-No. This will cause the network to fail. What is Dante Virtual Soundcard? - CORRECT ANS-Software that turns computers into Dante- enabled workstations, connecting audio applications to a Dante network. A computer running Dante Via [_____________] be the Clock Master for a Dante network. - CORRECT ANS-can

A unicast Dante Flow can contain up to [____] different Tx channels of audio from the same device. - CORRECT ANS- 4 How does one setup Dante redundancy - CORRECT ANS-Connect a second set of cables and switches to create a network that uses only the Secondary port of Dante devices Dante Controller [______________________________] a setting that allows an external clock to synchronize a Dante network. - CORRECT ANS-contains Devices on a Dante network [____________] use different latency settings at the same time. - CORRECT ANS-can A single network that carries audio, telephone, video, and data communication services at once is - CORRECT ANS-A converged network Can a Dante network with 5 switch hops support latency of 1ms or less - CORRECT ANS-Yes. Minimum recommended latency will be 0.5ms 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. - CORRECT ANS-False OSI model is a __________. - CORRECT ANS-Conceptual model If 5 unicast channels are sent between two devices, how much bandwidth, and how many flows are being used? (sample rate 48KHz/24-bit) - CORRECT ANS-12 mbps, and 2 flows ARP tables are held in nodes (e.g. - Dante devices, laptops, and other network endpoints). - CORRECT ANS-True

From the perspective of link bandwidth, unmanaged multicast traffic behaves l - CORRECT ANS- Broadcast What is an example of a concern IT Administrators may have with multicast? - CORRECT ANS- Multicast potentially floods throughout the network if a multicast management strategy like IGMP Snooping is not engaged Multicast can block https protocols Consider the OSI model in terms of packet creation as it travels down through the stack. An application has a port/socket address which pertains to a transport protocol, which in turn is encapsulated into a packet, which has a/an [_______________], which is then encapsulated into an Ethernet frame which has a/an [_________________]. - CORRECT ANS-IP Address MAC Address When a system will implement redundant networks, the preferred method for commissioning is

• CORRECT ANS-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. 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). - CORRECT ANS-True Diffserv QoS uses ______ tags. - CORRECT ANS-DSCP A unicast flow is created by a transmitter alone. - CORRECT ANS-False How can you find out how many transmit flows a device is using - CORRECT ANS-In Dante Controller, go to Device View, Tx tab Switches can [_______________________] data if two devices are transmitting to the same destination at the same time. - CORRECT ANS-queue

Higher link speeds allow frames to be cleared quicker through an interface. - CORRECT ANS- True QoS can protect Dante's time critical services from temporary bandwidth spikes coming from other traffic on the network. - CORRECT ANS-True 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? - CORRECT ANS- 1 milli seconds In a [________________] transaction, bandwidth is only used between a Dante transmitter and receiver when an active subscription is made. - CORRECT ANS-Unicast QoS will not have a positive effect on constant bandwidth services. - CORRECT ANS-True IGMP snooping listens for reports to [___________] messages in order to restrict [______________________] traffic. - CORRECT ANS-IGMP query multicast A switch populates its [______________________] by observing the source [__________________________] of ARP requests and responses passing through. - CORRECT ANS-MAC address table MAC addresses Giving an external word-clock to a Dante device replaces all internal clocking mechanisms. - CORRECT ANS-False It is highly recommended for the backplane of a switch to be able to accommodate full bandwidth use of all ports in both directions. - CORRECT ANS-True

SCENARIO: You have a Dante system that seems to be functioning correctly most of the time. There are no external word clocks configured and no preferred master configured. The problem: several devices that report they are losing sync occasionally. What steps would you take to find the root cause of the problem? (Select all the apply) - CORRECT ANS-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. DNS resolves [___________] to IP addresses. ARP resolves [_______________] to MAC addresses. - CORRECT ANS-Names IP Addresses Routers do not use IP addresses- they only use MAC addresses. - CORRECT ANS-False Dante devices automatically change unicast flows to multicast when a fan-out is detected - CORRECT ANS-False Which one of the following situations may call for QoS to be turned on? (select all the apply) - CORRECT ANS-1. Using Dante on a 100 MB network

2. Dante being used on an enterprise network with multiple, independent services on it. All managed switches come from the factory with all of their configuration settings disabled. - CORRECT ANS-False Multicast streams use a specific IP range of - CORRECT ANS-224.0.0.0/4 Which of the following should be considered when building a network from scratch - CORRECT ANS-Sizing trunk lines for worst case traffic loads

A transmit flow is a sequence of packets from multiple port addresses - CORRECT ANS-False To stop multicast traffic from flooding the network, __________ can be used. - CORRECT ANS- IGMP You have a four-channel Dante to analog output device which uses the Ultimo chip. Which of the following subscriptions are valid? (select all that apply) - CORRECT ANS-1. Subscribing three channels from a single transmitting device and one channel from another.

2. Subscribing two channels each from two different transmitting devices.
3. Subscribing four channels from a single transmitting device. Based on what we know about different transmission methods, which type of traffic would we expect to find on the public internet? - CORRECT ANS-Unicast QoS protects against too much bandwidth being used on a link by a collection of systems. Even if the overload happens over an extended period of time, packets are delivered in a timely manner, regardless of their QoS priority queue. - CORRECT ANS-False Dante uses ______ for clocking. - CORRECT ANS-PTP In Dante Controller's Clock Status tab, you see reports of more than one clock master. The Dante Controller Log also shows devices reporting sync loss occasionally. What steps would you take to find the root cause of the problem? (SELECT ALL THAT APPLY) - CORRECT ANS-1. Check switch configurations for any evidence of ACLs being configured. Check that all PTP traffic can traverse the network in both directions to all switches. Specifically, UDP ports 319 and 320 on 224.0.1.129
4. If IGMP snooping is enabled, test the system with no audio and IGMP snooping turned off. If this resolves the problem, you carefully examine the IGMP snooping configuration in each switch and ensure that they follow the guidelines.