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Question 1. Which component acts as the central management point for all Nyquist C devices? A) IP Station B) System Controller (NQ‑SYSCTRL) C) Amplifier D) End‑point speaker Answer: B Explanation: The System Controller (NQ‑SYSCTRL) provides the web‑based GUI and orchestrates configuration, licensing, and audio distribution for the entire C4000 system. Question 2. In a Nyquist C4000 deployment, what is the primary benefit of using static IP addressing on the System Controller’s Port A? A) Enables DHCP lease renewal B) Guarantees a constant address for remote access and licensing C) Allows automatic discovery of stations D) Reduces network latency Answer: B Explanation: Assigning a static IP to Port A ensures the controller’s address never changes, which is essential for consistent remote management, licensing activation, and firewall rule configuration. Question 3. Which protocol is required for the Nyquist C4000 System Controller to obtain accurate time stamps? A) FTP B) NTP C) SNMP D) SMTP Answer: B
Explanation: Network Time Protocol (NTP) synchronizes the controller’s clock with an external time source, vital for scheduled audio events and accurate logging. Question 4. Which of the following ports must be open on a firewall to allow HTTPS communication to the Nyquist web GUI? A) 80 B) 443 C) 5060 D) 21 Answer: B Explanation: HTTPS uses TCP port 443, which must be permitted for secure browser‑based access to the controller’s GUI. Question 5. When configuring a Nyquist C4000 system to stream Internet Radio, which setting is most critical? A) Multicast IP address B) Streaming service credentials (username/password) C) DHCP lease time D) SIP trunk password Answer: B Explanation: Access to many Internet Radio sources requires authentication; entering valid credentials ensures the stream can be retrieved and distributed. Question 6. What is the purpose of the “License Activation Key” (e.g., NQ‑C4000NLL) in the Nyquist system? A) Enables DHCP server function B) Unlocks specific software features and capacity limits C) Configures VLAN tagging
C) HTTPS
D) NTP
Answer: C Explanation: LDAP uses its own ports (389/636). While DNS and NTP are generally needed for network operation, HTTPS is unrelated to LDAP authentication. Question 10. What is the effect of enabling “Queued Paging” in a Nyquist zone? A) All pages play simultaneously to all zones B) Pages are stored and played sequentially, preventing interruption C) Zones are automatically muted during a page D) Only the highest priority page is audible Answer: B Explanation: Queued Paging ensures that incoming pages are placed in a queue and played one after another, avoiding overlap and ensuring each announcement is heard in full. Question 11. Which of the following best describes a “Paging Zone” in Nyquist C4000? A) A physical hardware module that amplifies audio B) A logical grouping of endpoints that receive the same audio stream C) A network VLAN dedicated to SIP traffic D) A firewall rule set for multicast traffic Answer: B Explanation: A Paging Zone is a software‑defined collection of speakers, IP stations, or other endpoints that share a common audio distribution path. Question 12. A user wants to trigger a lockdown routine via a physical panic button. Which Nyquist feature must be configured? A) SIP Tie‑Trunk
B) Contact Closure input in a Routine C) Text‑to‑Speech announcement D) Sound Masking schedule Answer: B Explanation: Contact Closure allows external hardware (e.g., a panic button) to trigger a Routine, which can then execute a sequence of actions such as paging, locking doors, or notifying staff. Question 13. Which Nyquist C4000 option provides “Automatic Failover” capability? A) Dual‑controller redundancy mode B) Amplifier protection mode C) Sound masking module D) SIP trunk load balancing Answer: A Explanation: Automatic Failover involves configuring a secondary controller that takes over if the primary fails, ensuring continuous operation. Question 14. When integrating Nyquist C4000 with a third‑party PBX, which protocol is primarily used? A) RTP B) SIP C) H. D) MGCP Answer: B Explanation: SIP (Session Initiation Protocol) is the standard method for establishing voice and paging calls between the Nyquist system and external PBX equipment.
Explanation: The System Controller includes an optional DHCP server that can assign IP addresses to stations when no external DHCP is available. Question 18. In Nyquist, what does “Class of Service (CoS)” refer to? A) Audio compression level B) User role and permission set for accessing system features C) Network QoS tagging D) Volume level per zone Answer: B Explanation: CoS defines the permissions associated with a user account, controlling what configuration and operational functions they can perform. Question 19. Which multicast address range is recommended for Nyquist audio distribution? A) 224.0.0.0 – 224.0.0.255 (local network control) B) 239.0.0.0 – 239.255.255.255 (administratively scoped) C) 230.0.0.0 – 230.255.255.255 (global) D) 225.0.0.0 – 225.255.255.255 (reserved) Answer: B Explanation: The 239.0.0.0/8 range is designated for private, administratively scoped multicast, ideal for internal audio streams without interfering with public multicast traffic. Question 20. When configuring a “Sound Masking” feature, what is the typical goal? A) To increase overall system volume B) To emit low‑level ambient noise that reduces speech intelligibility and improves privacy C) To replace emergency announcements with music D) To test speaker functionality automatically
Answer: B Explanation: Sound masking adds a consistent background sound (often white or pink noise) to mask conversations, enhancing privacy in open office environments. Question 21. Which of the following is NOT a valid source for audio distribution in Nyquist C4000? A) Line‑In analog input B) Pre‑recorded TTS announcement C) Live video feed D) Internet Radio stream Answer: C Explanation: Nyquist distributes audio only; a live video feed does not provide an audio source for the system. Question 22. If a Nyquist zone’s volume is set too high and causes distortion, which administrative tool should be used to correct it? A) License activation page B) Zone Control Panel in the GUI C) DHCP server settings D) SIP trunk configuration Answer: B Explanation: The Zone Control Panel allows administrators to adjust volume levels per zone, including fine‑tuning to prevent clipping. Question 23. Which Nyquist feature allows users to trigger a page by dialing a specific DTMF string from a SIP phone? A) DTMF‑controlled Paging B) SIP Tie‑Trunk
A) Routine trigger B) Calendar entry within the Scheduler module C) SIP trunk profile D) DHCP lease option Answer: B Explanation: The Scheduler allows administrators to create calendar entries that specify start time, duration, and repeat pattern for audio playback. Question 27. Which network service is NOT required for Nyquist C4000 to retrieve software updates? A) HTTPS B) TFTP C) DNS D) NTP Answer: B Explanation: Software updates are downloaded over HTTPS; TFTP is used for legacy firmware loading but not for routine updates. Question 28. What is the purpose of “Alert Filters” in Nyquist’s emergency management? A) To block spam emails from the notification system B) To select which National Weather Service alerts generate a paging routine C) To filter audio frequencies for sound masking D) To limit user login attempts Answer: B Explanation: Alert Filters let administrators specify which types of weather or emergency alerts should automatically trigger paging or other emergency actions.
Question 29. Which of the following statements about “SIP Tie‑Trunk” is correct? A) It connects two Nyquist controllers for shared audio distribution across campuses B) It provides a backup internet connection for streaming services C) It encrypts multicast audio with SRTP D) It disables DHCP on the controller Answer: A Explanation: SIP Tie‑Trunk links multiple Nyquist systems, allowing them to share paging calls and announcements across separate physical locations. Question 30. In the Nyquist GUI, where can an administrator view the current status (online/offline) of all IP stations? A) License Management page B) Station Supervision dashboard C) Sound Masking configuration D) DHCP lease table Answer: B Explanation: The Station Supervision dashboard provides real‑time health indicators for each IP station. Question 31. Which authentication method can be used to integrate Nyquist C4000 with Microsoft Active Directory? A) RADIUS only B) LDAP bind with service account credentials C) OAuth 2.0 token exchange D) SAML assertion Answer: B
C) License Management → Activation Keys D) Scheduler → Calendar → Lease Duration Answer: A Explanation: DHCP lease parameters are configured under System Parameters → Network → DHCP Settings. Question 35. Which Nyquist feature enables the system to automatically mute zones when a fire alarm input is received? A) Routine triggered by contact closure B) SIP Tie‑Trunk C) Sound Masking schedule D) Text‑to‑Speech template Answer: A Explanation: A Routine can be set to listen for a fire alarm contact closure and then execute actions such as muting zones or playing evacuation messages. Question 36. What is the recommended way to secure remote access to the Nyquist web GUI? A) Use default admin/password credentials B) Enable HTTPS with a strong TLS certificate and change default login passwords C) Open port 80 to the internet D) Disable all firewall rules Answer: B Explanation: Enabling HTTPS encrypts the session, and using strong, unique passwords prevents unauthorized access. Question 37. Which Nyquist component can directly receive an analog audio feed from a microphone?
A) IP Station B) System Controller’s Line‑In port C) Amplifier’s speaker output D) End‑point speaker’s built‑in mic Answer: B Explanation: The System Controller includes a Line‑In jack that accepts analog audio sources for distribution to zones. Question 38. In Nyquist, what does the “Multicast IP address and port” setting define? A) The address used for DHCP lease offers B) The destination for audio streams sent to IP stations C) The URL for the secure API D) The SNMP trap receiver Answer: B Explanation: Multicast IP and port specify where audio packets are sent; IP stations join this group to receive the stream. Question 39. Which of the following is a valid reason to use “Automatic Software Downloads” in Nyquist? A) To ensure the system always runs the latest security patches and feature updates B) To increase the volume of all zones automatically C) To change the default IP address of the controller D) To reset all user passwords nightly Answer: A Explanation: Enabling automatic downloads keeps the system up‑to‑date with bug fixes, security enhancements, and new capabilities.
Explanation: Contact Closure inputs detect a physical short (closed circuit) and can instantly start a configured Routine. Question 43. Which Nyquist feature allows administrators to limit which users can create or edit Zones? A) DHCP lease options B) Class of Service (CoS) permissions C) Multicast IP allocation D) SIP trunk authentication Answer: B Explanation: CoS defines user roles, and specific permissions can be granted or denied for zone management tasks. Question 44. Which of the following is a required step before installing the Certification Authority (CA) on client devices? A) Generate a new license key B) Export the Nyquist server’s SSL certificate and import it as a trusted root on the client C) Disable NTP synchronization D) Change the default multicast port Answer: B Explanation: Clients must trust the Nyquist controller’s HTTPS certificate; importing the CA certificate accomplishes this. Question 45. In Nyquist, what does the “Audio Distribution Section” of the dashboard primarily display? A) Current CPU usage of the controller B) Real‑time status of audio streams, sources, and zone assignments C) List of licensed modules
D) DHCP lease table Answer: B Explanation: This section shows which audio sources are active, what zones are receiving them, and any errors in the distribution chain. Question 46. Which of the following actions can be included in a Nyquist “Routine” for an evacuation scenario? A) Play a pre‑recorded evacuation message, unlock doors via contact closure, and send email alerts to administrators B) Increase the system’s DHCP lease time to 24 hours C) Change the system’s static IP address to 192.168.0. D) Disable all SIP trunks permanently Answer: A Explanation: Routines can orchestrate multiple actions (audio, I/O, notifications) to support emergency procedures such as evacuations. Question 47. What is the main advantage of using “SIP Tie‑Trunk” over a traditional analog tie line? A) Higher audio fidelity and ability to carry multiple concurrent paging calls over IP B) Reduced need for DHCP servers C) Automatic volume leveling across zones D) Built‑in sound masking capabilities Answer: A Explanation: SIP Tie‑Trunk leverages IP networking, supporting multiple simultaneous calls and better scalability compared to analog lines. Question 48. Which of the following is NOT a valid method for delivering a “Pre‑recorded announcement” to a zone?
A) To restrict which external sites the controller can contact for licensing, updates, and Internet Radio streams B) To block all outbound traffic for security C) To define DNS zones for internal devices D) To enable multicast routing Answer: A Explanation: The whitelist enumerates approved URLs that the controller may access, preventing unauthorized external connections while allowing necessary services. Question 52. Which of the following is a correct statement about “SIP Trunk” configuration in Nyquist? A) It must use port 5060 for both TCP and UDP traffic B) It can be set to use TLS (port 5061) for encrypted signaling C) It does not support authentication D) It requires a static multicast address Answer: B Explanation: Nyquist supports secure SIP signaling over TLS on port 5061, providing encrypted communication with the PBX. Question 53. In Nyquist, what does the “Zone Control Panel” allow an administrator to do in real time? A) Change the system’s license key B) Adjust volume, mute/unmute, and select audio sources for a specific zone C) Modify DHCP lease times D) Update the firmware of IP stations Answer: B Explanation: The Zone Control Panel provides on‑the‑fly control over audio parameters for each zone.
Question 54. Which of the following is a prerequisite for using “Automatic Failover” between two controllers? A) Both controllers must share the same license key B) Both controllers must be on the same VLAN and configured with identical network settings C) The secondary controller must be a hardware‑only model D) The primary controller must run DHCP server mode only Answer: B Explanation: For failover, both controllers need network compatibility and synchronized configuration so the secondary can assume control seamlessly. Question 55. Which Nyquist feature can be used to provide background audio in a lobby without interfering with paging messages? A) Sound Masking with a low‑level ambient track B) Scheduled Audio Event set to “Loop” with lower priority than paging C) SIP Tie‑Trunk D) Contact Closure input Answer: B Explanation: Scheduling a continuous background track with a lower priority ensures that paging overrides it when needed, while the lobby audio plays otherwise. Question 56. When an IP station reports “offline,” which troubleshooting step is most appropriate first? A) Re‑install the System Controller firmware B) Verify Ethernet link status and PoE supply to the station C) Change the multicast IP address D) Reset all zone volumes to default
