Focuses on the design of intuitive and functional user interfaces for Biamp control systems. Topics include logic design, UI layout standards, event triggers, presets, user permissions, system monitoring, and integration with Tesira control modules. The exam simulates design exercises requiring workflow efficiency, programming logic, and troubleshooting of control system functionality in complex AV environments.
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Question 1. Which design philosophy most directly supports future system expansion without major re‑engineering? A) Prioritizing aesthetic UI design B) Using proprietary naming conventions C) Designing modular control groups D) Hard‑coding IP addresses Answer: C Explanation: Modular groups isolate functions, making it easy to add or remove components without redesigning the entire system. Question 2. In a TCP/IP network, which device typically translates between a private LAN and the internet? A) Switch B) Router C) Hub D) Bridge Answer: B Explanation: Routers perform network address translation (NAT) and route traffic between different IP subnets and the internet. Question 3. Which protocol is most appropriate for secure remote configuration of a Tesira device? A) Telnet B) HTTP C) SSH D) FTP
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Answer: C Explanation: SSH encrypts traffic, providing secure command‑line access unlike Telnet, which is plaintext. Question 4. When segmenting a network for AV control traffic, which VLAN configuration is recommended? A) Place all devices on the same VLAN as office PCs B) Create a dedicated “AV‑Control” VLAN C) Disable VLANs and use flat addressing D) Use a guest Wi‑Fi VLAN for control devices Answer: B Explanation: A dedicated VLAN isolates control traffic, reducing interference and improving security. Question 5. PoE+ (802.3at) can deliver up to how many watts to a powered device? A) 7.5 W B) 15.4 W C) 30 W D) 60 W Answer: C Explanation: PoE+ supplies up to 30 W, sufficient for most control peripherals such as TEC‑1 and volume controllers. Question 6. Which documentation element best conveys the flow of audio signals between processors? A) System narrative
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A) OR
B) AND
C) XOR
D) NOT
Answer: B Explanation: AND outputs true only when both inputs are true, enabling combined routing. Question 10. Which numeric block would you use to gradually increase volume over 2 seconds? A) Min/Max B) Average C) Ramp D) Counter Answer: C Explanation: The Ramp block creates a smooth transition between values over a specified time. Question 11. What is the primary purpose of a Delay block in a control scheme? A) To store a permanent value B) To debounce noisy inputs C) To increase audio gain D) To encrypt network traffic Answer: B Explanation: Delay blocks can filter out rapid toggling (bounce) from mechanical switches.
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Question 12. Which Tesira block is best for displaying the current level of a microphone on a TEC‑1 screen? A) Indicator – LED B) Meter – Level C) Logic – NOT D) Numeric – Average Answer: B Explanation: Meter blocks provide real‑time level readouts that can be mapped to visual displays. Question 13. System‑level variables are most useful for: A) Storing temporary UI colors only B) Sharing values across multiple control blocks C) Defining static IP addresses D) Controlling only one device at a time Answer: B Explanation: System variables allow many blocks to read or write the same data, ensuring consistency. Question 14. Exposing a control object via the Tesira control port enables: A) Direct hardware wiring only B) Remote third‑party control through Telnet/SSH C) Automatic firmware updates D) Power over Ethernet negotiation Answer: B
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C) A Logic – OR block on each output D) A Delay block on the master knob Answer: B Explanation: The master ramp drives a gain adjustment; each zone’s relative offset remains unchanged. Question 18. Grouping several microphones under one encoder is known as: A) Ganging B) Splitting C) Decoding D) Multiplexing Answer: A Explanation: Ganging links multiple inputs to a single control element. Question 19. Which Telnet command retrieves the current value of a system variable named “Room_Temp”? A) GET VAR Room_Temp B) SHOW VARIABLE Room_Temp C) GETVALUE Room_Temp D) GET Room_Temp Answer: D Explanation: The Tesira text protocol uses “GET <variable_name>” to query a variable’s value. Question 20. When configuring the Tesira control port for external access, the most important security step is: A) Disabling DHCP
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B) Enabling SSH only and disabling Telnet C) Setting the port speed to 10 Mbps D) Assigning a static MAC address Answer: B Explanation: SSH encrypts traffic, while Telnet is insecure; disabling Telnet mitigates unauthorized access. Question 21. A common cause of a “logic lock‑up” in a Tesira design is: A) Using too many PoE devices B) Uninitialized flip‑flop states at power‑up C) Incorrect subnet mask D) Overloading the control port with audio data Answer: B Explanation: Flip‑flops retain undefined states if not set, causing unpredictable logic behavior. Question 22. To reduce control latency, which design practice is most effective? A) Increase the number of nested logic blocks B) Place all control blocks on a single processor C) Minimize chain length and avoid unnecessary delays D) Use 100 Mbps Ethernet for audio streaming only Answer: C Explanation: Shorter signal paths and fewer delays lead to faster response times. Question 23. Modular programming in Tesira primarily improves: A) Audio fidelity
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Question 26. An emergency “mute‑all” command should be placed at which priority level in the control hierarchy? A) Lowest, so normal functions can override it B) Medium, balanced with other commands C. Highest, to override any user control D. Equal to normal mute controls Answer: C Explanation: Emergency functions must pre‑empt all other controls for safety. Question 27. Which Tesira feature allows scheduling a system power‑on at 07:00 AM every weekday? A) Event Scheduler block B) Delay block set to 24 h C. Numeric – Ramp with time parameter D. Logic – OR with calendar input Answer: A Explanation: The Event Scheduler can trigger actions based on date/time patterns. Question 28. When assigning an IP address to a TEC‑3, which subnet mask would be appropriate for a /24 network? A) 255.0.0. B) 255.255.0. C) 255.255.255. D. 255.255.255. Answer: C Explanation: /24 corresponds to 255.255.255.0, allowing 254 host addresses.
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Question 29. To provide visual feedback that a source is active on a TEC‑2, you would configure: A) An LED indicator to change to green when the source variable = 1 B) A numeric block to display the source name C. A delay block set to 5 seconds D. A PoE power toggle Answer: A Explanation: LEDs can be linked to control variables, turning green when the associated source is selected. Question 30. Which command subscribes to changes of a variable named “Gain_Level” via Telnet? A) SUBSCRIBE Gain_Level B. MONITOR Gain_Level C. LISTEN Gain_Level D. WATCH Gain_Level Answer: A Explanation: “SUBSCRIBE” tells the Tesira server to send updates whenever the variable changes. Question 31. In a split‑room configuration, each sub‑room should have its own: A) Global master volume only B) Independent TEC‑1 controller and control variables C. Shared LED indicators across rooms D. Single network VLAN for all rooms
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D. Change the PoE budget Answer: B Explanation: Incorrect mapping is the most common cause of missing feedback. Question 35. Which block would you use to calculate the average level of three microphones for a “room average” meter? A. Numeric – Min/Max B. Numeric – Average C. Logic – AND D. Delay – Timer Answer: B Explanation: The Average block computes the mean of multiple inputs. Question 36. To protect the Tesira control port from unauthorized access, you should: A. Open all ports on the firewall B. Use a strong password and enable SSH only C. Disable DHCP on the control network D. Increase the PoE voltage to 60 W Answer: B Explanation: Strong authentication and encrypted access limit exposure. Question 37. When creating a preset that lowers all zone volumes by 6 dB, which block combination is appropriate? A. Control State – Preset linked to a Ramp – −6 dB B. Numeric – Ramp – −6 dB feeding each zone’s Gain block
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C. Logic – NOT feeding each zone’s mute D. Delay – 6 seconds on each zone Answer: B Explanation: A ramp set to – 6 dB can be applied to each gain block, achieving the desired reduction. Question 38. In Tesira, the “Subscribe” command is most useful for: A. Sending configuration files to devices B. Receiving real‑time updates of variable changes C. Resetting the processor to factory defaults D. Enabling PoE on a port Answer: B Explanation: Subscribing streams live variable updates to the client. Question 39. Which of the following best describes a “race condition” in control logic? A. Two signals arriving simultaneously causing unpredictable output B. A delay block exceeding its time limit C. An IP address conflict on the network D. A PoE overload on a switch port Answer: A Explanation: When two processes compete for the same resource without proper sequencing, the result can be indeterminate. Question 40. To ensure that a meeting‑room preset restores the correct source and volume, you must: A. Store source selection and volume as separate variables and recall both in the preset
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A. To define the block’s IP address B. To set the default value when the system powers up C. To schedule a timed event D. To enable PoE negotiation Answer: B Explanation: It determines the block’s starting condition, ensuring predictable behavior. Question 44. When a TEC‑1 button is held down for more than 2 seconds, the desired action is to repeat the command every 0.5 seconds. Which block combination achieves this? A. Delay – 2 s followed by a Repeat block B. Timer – 0.5 s set to “Auto‑repeat” after 2 s activation C. Logic – AND with a Ramp D. Numeric – Counter with reset Answer: B Explanation: The Timer can be configured to start after a hold period and auto‑repeat at the defined interval. Question 45. Which of the following is a recommended practice for handling unexpected input values in a control design? A. Ignore them and let the system crash B. Use a default “error” state and log the event C. Force the value to zero silently D. Reboot the processor automatically Answer: B Explanation: Providing an error state and logging aids diagnosis without abrupt failure.
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Question 46. A “Group” block in Tesira is primarily used to: A. Combine multiple audio streams into one B. Apply the same control logic to several variables simultaneously C. Encrypt network traffic D. Allocate PoE power to devices Answer: B Explanation: Group blocks let a single input affect many outputs, simplifying control of multiple items. Question 47. Which command would you use to set the volume of a device named “Zone1” to – 12 dB via Telnet? A. SET Zone1.Volume - 12 B. WRITE Volume Zone1 - 12 C. SETVAR Zone1_Volume - 12 D. SETVALUE Zone1.Volume - 12 Answer: A Explanation: The Tesira text protocol uses “SET
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C. Disable the microphone when either room is in use D. Route the mic to a third‑party recorder only Answer: B Explanation: Shared resources should have a unified control to prevent contradictory states. Question 52. Which block type would you use to implement a “hold‑to‑talk” function where the mic is active only while a button is pressed? A. Logic – AND with button press as enable B. Numeric – Ramp with negative slope C. Delay – Timer set to 0 s D. Control State – Toggle Answer: A Explanation: An AND block passes the mic signal only when the button (enable) is true. Question 53. To secure the Tesira control port behind a firewall, you must: A. Open all inbound ports B. Allow only the specific TCP port (default 23 for Telnet, 22 for SSH) from trusted IP ranges C. Disable DNS on the control network D. Increase PoE power to 45 W Answer: B Explanation: Restricting inbound traffic to the control port and trusted sources reduces attack surface. Question 54. Which of the following best describes “PoE budgeting” in a control network? A. Assigning static IP addresses to each device
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B. Ensuring the total power draw of all PoE devices does not exceed the switch’s supply capacity C. Using VLANs to separate traffic D. Setting the MTU size for control packets Answer: B Explanation: The switch can only provide a limited amount of power; total demand must stay within that limit. Question 55. A “Numeric – Min/Max” block is useful when: A. You need to select the highest level among several inputs B. You want to average multiple signals C. You need to invert a binary signal D. You are creating a timed delay Answer: A Explanation: Min/Max outputs the lowest or highest value among its inputs. Question 56. When a TEC‑ 2 ’s rotary encoder is rotated clockwise, the associated variable should: A. Increase by one step B. Decrease by one step C. Reset to zero D. Toggle between on/off Answer: A Explanation: Clockwise rotation typically increments the variable value. Question 57. Which command would you use to query the firmware version of a Tesira processor via Telnet?
