T38 Systems Practice Test

These questions are part of the practice quiz. Start practicing

• The UFCP is powered by which bus?
• What is a typical symptom when NAT translation causes T.38 issues?
• If a fax fails mid-transmission, which diagnostic metric should you inspect first?
• Which statement best describes T.38 fax relay?
• Which transport protocol carries T.38 data in a session?
• What firewall-related setting is typically needed for T.38?
• The gearbox shift range spans between which two numbers?
• On the ground at MIL power, EGT, RPM and nozzle fall into which ranges?
• UDPTL datagrams in T.38 are used for transporting what?
• Name a typical reason why T.38 negotiation might fail even when both ends support it.
• How can gateway throttling affect T.38 performance?
• What setting helps devices traverse NAT in T.38?
• The gen cut-in range falls within which percent band?
• Name a common network issue that can degrade T.38 performance.
• A T5 fail is indicated by which diagnostic sign?
• Which range is listed for the gen cut-in specification?
• Which signaling environment besides SIP uses T.38 commonly?
• When would you disable T.38 in a system?
• What are the acceptable EGT fluctuation limits?
• The gearbox shift range is defined as which of the following statements?
• What ITU-T term describes the fax relay on IP networks?
• If the left boost pump is off and crossfeed is on, which system supplies fuel to both engines?
• Which item is NOT part of the gear up warning conditions?
• Which statement describes traditional T.30/T.37 methods?
• Which statement correctly matches the gearbox shift range?
• How should you interpret the TACN bearing pointer reading?
• Following TRU fail, which components are active?
• In a mixed-vendor T.38 environment, which action is commonly taken to maintain interoperability?
• What is the purpose of a T.38 gateway?
• Which log artifacts indicate T.38 is in use on a gateway?
• What is a practical monitoring approach for T.38 that helps quickly identify issues?
• If a setting is 48%, which range does it belong to?
• What is a typical fallback path if T.38 negotiation fails?
• How would you simulate network impairment to test T.38 resilience?
• What is a practical sign that T.38 is functioning correctly on a gateway after configuration?
• Which ITU-T recommendation defines T.38?
• If you observe an unusual forward stick force, which fault is this most closely associated with?
• What is the purpose of the T5 system?
• During start, at what EGT value should the aircraft be aborted?
• Which transport carries the encoded fax data as real-time data over IP using UDP in T.38?
• Which component centralizes T.38 management in large deployments?
• What is the effect of jitter on timely delivery?
• The HUD reading -337- corresponds to which Magnetic Radial value?
• Which statement best describes the order in which PFLs appear on the display?
• Which network factor most directly affects T.38 reliability?
• During start, at what EGT value should the start be aborted?
• Which approach helps verify that a call used T.38 rather than audio?
• What is the minimum RPM required for an aerial restart?
• From 8,000 to 23,000 feet, what is the target pressure setting?
• If the fire test circuit loop is inop but the fire light is illuminated, what is the appropriate action?
• Which is the primary reason to perform firmware updates on devices participating in T.38?
• Which mechanism is used to align fax capabilities between endpoints in a T.38 call?
• Left hydraulic overtemp indications show which combination?
• What is a common symptom of T.38 path issues?
• Which SIP message carries the SDP negotiation for T.38?
• What is the purpose of using a test call or diagnostic tool in T.38 capability exchange?
• What is the purpose of enabling rate management in T.38?
• In an IP network, which two protocols are primarily involved in a T.38 call?
• Which tool or method can help simulate T.38 traffic?
• In SIP, which signaling component negotiates T.38 capabilities?
• What is the pressure scheduling rule for altitude ranges?
• Is the alternate gear extension control located in both cockpits?
• What type of documentation should you maintain for T.38 configurations?
• What is the primary purpose of T.38 in VoIP environments?
• Gear up warning conditions include altitude below 10,000 ft, airspeed under 210 KCAS, and throttles below what percent RPM?
• What is one best practice for ensuring reliable T.38 across WAN links?
• Which device often centralizes T.38 control in large deployments?
• ECM stands for which term?
• What is the function of a Fax Class in T.38 negotiation?
• What is a typical symptom of packet loss in a T.38 fax transmission?
• If the left essential bus fails, which components are lost?
• In solo flight, the fuel balance constraint relates to the right aft cell level relative to the left side. What is the description?
• Which of the following indicates that a T.38 capability negotiation includes explicit max datagram settings?
• Name a typical challenge in remote-site T.38 deployments?
• Which standards define the relationship between T.38 and the signaling protocols (SIP/H.323)?
• Above 23,000 feet, the pressure setting follows which formula?
• How does a fax gateway handle a fax made with ECM during T.38 transmission?
• Which flap setting range has a KCAS limit of 300 KCAS?
• Which power source powers essential DC bus components after TRU failure?
• For gravity-fed fuel systems, up to what altitude is it guaranteed to operate?
• NAT translation issues in T.38 most likely present as which symptom?
• Which component is commonly used to manage T.38 media in networks employing NAT and firewalls?
• Which statement is correct about the alternate gear extension?
• What does a flashing entry on the UFCP indicate?
• In a SIP deployment, which exchange determines whether T.38 is used?
• What is the function of a gatekeeper in H.323 with T.38?
• Which statement best describes the use of T.38 in IP fax?
• What is UDPTL in the context of T.38?
• What kind of testing can help verify interoperability between vendors?
• Cautions without an associated aural tone or VMS include which items?
• How does T.38 differ from traditional T.30/T.37 fax methods?
• Why should interoperability testing include endpoints and gateways from multiple vendors?
• In a SIP-based deployment, which messages carry the decision to switch to T.38?
• In T.38 deployments, what is the role of a fax relay?
• If a system requires the gear shift to be within 65-75%, which term best describes this requirement?
• To reduce fax handshake failures in a mixed vendor environment, which actions are recommended?
• What is one typical security consideration for T.38?
• Which documentation items are recommended for T.38 configurations?
• What is the role of a fax gateway in T.38 networks?
• Which statement best describes the static inverter activation requirement?
• Asymmetric G limits at 2k lb of fuel are which range?
• Which option correctly describes Fax Pass-Through?
• Which range would be considered part of the gearbox shift specification?
• What is the role of a gateway in a T.38 system?
• What is a practical indicator that T.38 usage is active on a gateway during call setup?
• Which acronym represents the components on the utility hydraulic system?
• When configuring T.38, which parameter is typically adjusted?
• Which action helps ensure consistent T.38 behavior with multiple devices?
• What feature in T.38 negotiation helps endpoints agree on fax capabilities?
• Which statement about T.38 call setup is true?
• How would you measure fax throughput in a T.38 session?
• In a quality of service (QoS) plan, how should T.38 traffic be classified?
• What is T.38 primarily used for?
• What are the radar altimeter limits?
• Which component enables fax transmission across different networks by translating between PSTN and IP in T.38?
• If you cannot establish T.38 despite ongoing SIP calls, what is a practical first check?
• What is the function of the G hot key?
• What happens if one end does not support T.38?
• What does T.38 practice testing aim to guarantee across IP networks?
• If UDP ports used by SIP and T.38 are blocked by a firewall, what is likely the outcome?
• In which scenario would you prefer T.38 over pass-through?
• A cross-gateway fax test is used to verify data transfer across gateways. What is the correct interpretation of this test?
• Name a security consideration for T.38 over IP networks.
• What is the difference between 'T.38' and 'T.38 over UDP'?
• How does T.38 differ from fax pass-through (G.711) in terms of reliability?
• What kind of devices should be included in a T.38 interoperability test?
• Which of the following statements best describes the security posture for T.38 transmissions?
• How can you verify that the remote endpoint is receiving a G.711 fallback when T.38 fails?
• Which information is advertised in SDP to enable T.38?
• If the hydraulic pressure light is on while the system pressure is normal, what is indicated?
• Two common ways to carry fax in IP networks when using T.38?
• Which ITU standard governs traditional fax communication that T.38 aims to enable over IP?
• Indications of gearbox fail to shift occur at which RPM range?
• Which of the following statements best describes the width comparison between gearbox shift range and gen cut-in range?
• Which network layer component is primarily responsible for delivering T.38 data?
• What is the effect of enabling Rate Management in T.38?
• What is the typical minimum network condition for reliable T.38 operation?
• What are the two main end-to-end elements involved in T.38 fax transmission?
• Which metric indicates the maximum payload of a T.38 datagram?
• What is the anti-ice system effective RPM?
• What is a sign that a gateway needs upgrading for better T.38 compatibility?
• How can you verify T.38 negotiation without sending a real fax?
• In troubleshooting, what tool would you use to inspect T.38 real-time data?
• What does the sequence 630-650, 99-101, 0-20 specify?
• Brakes are associated with the primary hydraulic system: True or False?
• What is the likely outcome if UDP is blocked by a firewall while both ends support T.38?
• The landing and taxi light switch supplies power to which part?
• Why is jitter management important for T.38?
• Flameouts have occurred as low as which altitude in a gravity-fed fuel system?
• What is a key difference between T.38 and G.711 Fax Pass-Through?
• Which option lists the gearbox shift range most precisely?
• Why is bandwidth planning important for T.38 deployments?
• During an MDP failure, which display condition would you observe on the MFD?
• The gen cut-in range is defined as which percent interval?
• What would you check if fax quality is poor in a T.38 call?
• If fax transmissions exhibit inconsistent results across different vendors, what action is most likely needed?
• What is the fuel threshold for FUEL LOW lights and red indicators?
• Which components are on the oil pump shaft?
• MDP failure indications consist of which display conditions?
• Where are the T.38 endpoints typically located in the network?
• What is the wait time to shut off electrical power after EGI?
• How can you minimize manual intervention after deploying T.38?
• If the fire test circuit loop is inop but the fire light comes on, can the fire indication be trusted?
• Static inverter activation requires which combination of actions?
• Name two signaling environments where T.38 is commonly used.
• A left essential bus failure is described as causing loss of which components?
• Which condition is indicated by a flashing entry on UFCP?
• Which statement correctly compares the widths of the two ranges?
• How does jitter affect T.38 data delivery?
• What indicators accompany gearbox fail to shift?
• What is the KCAS limit for 0-45 degree flaps?
• What is a recommended practice for monitoring T.38 activity?
• What transport is used for T.38 fax data?
• In SIP SDP, which indicator signals the use of T.38 for a call?
• Which statement best describes the port usage for T.38 UDPTL?
• T5 fail indications include which symptom?
• Which statement about T.38 version negotiation is true?
• With 80% battery charge, approximately how long will the battery last?
• What is one common reason for 'No answer' in T.38 calls?
• What RPM percentage range triggers generator cut-in?
• What does ECM stand for in fax terms?
• Which testing approach specifically exercises T.38 negotiation?
• Which factor makes IP-based fax less desirable, prompting a switch to legacy methods?
• Which statement accurately describes UDPTL port usage in T.38?
• What is a common symptom of misrouted T.38 traffic?
• For solo flight, which statement describes the fuel imbalance limit related to CG?
• How can you verify that a call used T.38 rather than G.711 for fax?
• Name one common reason a T.38 call fails to establish.
• Which fax modulation standards are commonly negotiated as part of T.38 capabilities?
• Which component is lost with Ram Dump?
• In a multi-gateway deployment, what is a best practice for T.38 reliability?
• The label 'AL 500 on HUD' corresponds to which warning type?
• Which frequencies are controlled via the nav backup panel?
• Which device is mounted on the oil pump shaft for speed measurement?
• Which items are affected when backing up with the Audio Control Panel?
• What is the maximum altitude at which the gravity-fed fuel system should still function?
• Why is QoS important for T.38 transmissions?
• Which metric helps assess T.38 fax throughput specifically?
• Which bus is designated to power non-essential systems such as the UFCP?
• Gearbox shift range is defined as which percent interval?
• Which statement best contrasts T.38 with the PSTN?
• Which transport protocol is primarily used to carry T.38 data?
• What does B + 1000 on the HUD indicate?
• What is the main advantage of T.38 over G.711 fax pass-through regarding reliability?
• What is the purpose of the 'T.38 Fax Version' attribute in SDP?
• Nozzle setting at idle power on the ground is within which percentage range?
• Which of the following should you check when diagnosing an FCS error in a T.38 fax?
• Which types of issues are diagnostic logs most effective at uncovering in T.38 deployments?
• Which of the following percentages would be outside the gen cut-in range?
• In the context of T.38, what does path stability refer to?
• Flameouts have occurred in gravity-fed fuel systems as low as which altitude?
• Loss on which systems when using Audio Control Panel backup?
• What is the typical effect of high UDP datagram loss on a fax page?
• Why is T.38 often preferred for enterprise fax services?
• Which factor best ensures T.38 can adapt to varying network conditions?
• A flap slab interconnect failure on takeoff indications would present which symptom?
• What does ECM stand for and why is it important for T.38?
• Which set of SDP parameters controls the fax data flow in T.38 capability negotiation?
• Which type of error is most commonly encountered in T.38 tests?
• Which option best describes the gen cut-in range?
• Name a diagnostic test that can verify T.38 readiness.
• What administrative documents should you consult for best practices in T.38 deployment?
• During MIL power on the ground, the nozzle position is within which range?
• Which statement best describes NAT's effect on T.38 and a typical workaround?
• Which statement describes how Rate Management works in T.38?
• What role does CNG play in fax transmissions?
• What kind of data does UDPTL carry in a T.38 session?
• What is a primary goal of T.38 practice testing?
• At what altitude range does the pressure schedule maintain ambient pressure?
• Which SDP parameters are commonly seen in T.38 capability negotiation?
• What is the role of diagnostics and logging in T.38 deployments?
• What are the indications of oil pump shaft shear?
• ECM stands for what, and how does it relate to T.38?
• What does ECM stand for in T.38 context, and what is its purpose?
• What is the cockpit pressure at approximately 18,000 feet altitude?
• What is the NWS speed limit in Knots?
• Which security measures are suggested for T.38 signaling and media?