Knowledge check PhotoRobot Network Setup
12 questions in pool · live exam draws 5
B03
Q1 multiple-choice · standard-delivery In standard PhotoRobot installations, the network setup includes a preconfigured router . What is its role?
Explanation: The preconfigured router creates an isolated PhotoRobot subnet (Control Units, computer, dedicated lights Wi-Fi) and connects to the customer’s main network via its WAN port. The customer’s IT only needs to provide internet uplink — no firewall changes or DHCP modifications on the customer LAN required.
Q2 multiple-choice · subnet Why must all PhotoRobot Control Units and the control computer be on the same network subnet ?
Explanation: PhotoRobot uses UDP broadcast to port 6666 for Control Unit discovery. UDP broadcast frames are not forwarded across subnet boundaries by routers (by default). If the computer is on one subnet and Control Units on another, discovery fails — even if TCP connections would work via routing. Single-subnet requirement is about discovery mechanics, not security or bandwidth.
Q3 multiple-choice · physical-connection What is the recommended physical connection type for a PhotoRobot Control Unit?
Explanation: Wired Ethernet is mandatory for Control Units. Wi-Fi causes frequent disconnects under load (a 36-frame capture sequence is real network load), timeouts, and synchronization issues between cameras + lights + robot motion. Wi-Fi is acceptable only for lights (on dedicated SSID, minimal traffic) and for iPhone Touch app (inherently mobile use case).
Q4 multiple-choice · ports Which TWO ports does CAPP use to communicate with Control Units G6 and newer (TCP, outbound from computer)?
Explanation: TCP 7777 and 7778 (both outbound from the control computer) are the primary communication ports for Control Units G6 and newer. UDP 6666 is for discovery broadcast, UDP 6660 is for response from older G4/G5 Control Units. TCP 80/443 are for external HTTPS / HTTP cloud services — not local Control Unit communication.
Q5 true-false · dhcp PhotoRobot equipment should use fixed IP addresses assigned manually by the IT department.
Explanation: PhotoRobot is designed for DHCP-assigned dynamic IPs . Fixed IPs are not generally recommended — they require manual configuration on each Control Unit’s web interface and create maintenance burden (every replacement Control Unit needs reconfiguration). If a customer’s IT specifically requires fixed IPs, contact PhotoRobot Support for guidance — it’s a special-case configuration.
Q6 scenario · diagnostics · weight 2 An operator opens CAPP and sees “no Control Units found.” All Control Units worked yesterday. What is the first diagnostic step they should take?
Explanation: The canonical triage order starts with the cheapest physical check — the cable / link LEDs. A dead link LED means cable disconnection, kinked patch cord, or connector failure. Fixing that takes seconds. Power-cycling the customer’s router can disrupt other equipment, contacting support skips faster checks, and reinstalling CAPP is overkill before basic physical verification.
Q7 multiple-choice · server-access Which TWO external domains must be reachable from the PhotoRobot subnet for full functionality?
Explanation: PhotoRobot requires outbound access to
*.photorobot.com (Cloud services — wildcard covers
app.photorobot.com ,
account.photorobot.com , etc.) AND to
as-unirobot.azurewebsites.net (Activation server with callhome function). Both must be whitelisted in any strict outbound firewall. Without these, unit activation and license renewal fail; without periodic activation contact, units enter limited-functionality mode.
Q8 multiple-choice · bandwidth What is PhotoRobot’s recommended minimum internet speed for Cloud and Hybrid subscription tiers?
Explanation: PhotoRobot recommends 20 / 20 Mbps minimum for Cloud and Hybrid subscriptions. This is symmetric — the upload matters because captured images sync to the cloud. Local-only installations have lower bandwidth needs (just activation + occasional updates), but Cloud/Hybrid pushes image data through the link continuously during production. Customer’s existing internet may need an upgrade — verify via a speedtest from the PhotoRobot subnet (not from the office Wi-Fi).
Q9 multiple-choice · lights In a standard PhotoRobot install with preconfigured router, where do studio lights connect?
Explanation: Lights connect to a dedicated Wi-Fi SSID on the preconfigured PhotoRobot router. This keeps light control commands off the customer’s main Wi-Fi (where they’d contend with other clients) and provides Wi-Fi network for lights’ minimal traffic load. Wired Ethernet for lights is unnecessary (their traffic is light) and the customer’s main Wi-Fi introduces contention + security entanglement risks.
Q10 multiple-select · hardware-spec · weight 2 Which of the following are PhotoRobot’s recommended hardware specifications for a CAPP control computer? (Select all that apply.)
Explanation: The recommended spec is 16 GB RAM, dedicated GPU with 4 GB memory (Apple Silicon M1+ acceptable for Mac; Windows integrated graphics specifically NOT recommended), 1920×1080 monitor, 500 GB SSD, USB 3.0 with one port per camera plus one extra. The two unchecked options are common misconceptions — 8 GB RAM is below spec, Windows integrated graphics doesn’t have the GPU memory needed for image processing.
Q11 scenario · ip-discovery · weight 2 The control computer has IP 10.1.2.55 with netmask 255.255.255.0 . CAPP’s locator shows a Control Unit at IP 10.1.3.42 . The customer’s network engineer says “routing is configured between subnets, both can ping each other.” Can CAPP discover the Control Unit via UDP broadcast?
Explanation: This is the most common subnet misconfiguration: customer’s IT enables inter-subnet routing (which forwards unicast TCP / UDP), but does NOT forward broadcast traffic across subnets. Routers by default block broadcasts to prevent cross-subnet noise. CAPP’s discovery uses UDP broadcast to port 6666 — which stays within the originating subnet. Result: Control Unit is reachable via direct IP, but CAPP cannot discover it. Solution: put computer and CU on same subnet.
Q12 true-false · cu-generations Control Units G5, G6, and G7 use the same TCP communication ports (7777 and 7778) for CAPP communication, while only G4 / G5 use UDP 6660 as inbound response to discovery.
True
False
Pool size: 12 questions. Drawn for module check: 5. Drawn for cert exam: per cert weight (operator 7%, network-specialist 18% — this is THE core module for NetSpec cert).
All questions have **Source:** + **Explanation:** per Academy authoring guidelines.
Mixed types: 7× multiple-choice, 2× true-false, 1× multiple-select, 2× scenario.
Topic tags: standard-delivery, subnet, physical-connection, ports, dhcp, diagnostics, server-access, bandwidth, lights, hardware-spec, ip-discovery, cu-generations.
Option format v0.4.2+ convention.
Status draft — awaiting KH review.
Explanation: All currently supported Control Units (G5, G6, G7) use TCP 7777 and 7778 for CAPP communication. UDP 6666 is outbound discovery broadcast (universal). UDP 6660 is the inbound response from older G4 / G5 Control Units — newer G6 / G7 respond differently. Knowing the per-generation differences matters when configuring firewall rules in heterogeneous installs.
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