Huawei H19-315 Practice Exams
Last updated on Oct 21,2026- Exam Code: H19-315
- Exam Name: HCSA-Presales-Transmission & Access
- Certification Provider: Huawei
- Latest update: Oct 21,2026
Question #21
Which of the following technologies is used by GPON system to allocate bandwidth to ONU?
- A . T-CONT
- B . DBA
- C . WDM
- D . Type B
Correct Answer: B
B
Explanation:
The correct answer is DBA (Dynamic Bandwidth Allocation). DBA is a critical technology in GPON systems that dynamically allocates upstream bandwidth to Optical Network Units (ONUs) based on their real-time traffic demands. This ensures efficient utilization of the available bandwidth and prevents congestion in the upstream direction.
T-CONT (Traffic Container): While T-CONT is used to classify and manage different types of traffic (e.g., voice, video, data), it is not responsible for bandwidth allocation.
WDM (Wavelength Division Multiplexing): WDM is a technology used in optical networks to transmit multiple signals over a single fiber using different wavelengths. It is unrelated to bandwidth allocation in GPON.
Type B: Refers to a protection mechanism in GPON, not bandwidth allocation.
Reference: Huawei GPON Technology White Paper
ITU-T G.984.x Standards for GPON
B
Explanation:
The correct answer is DBA (Dynamic Bandwidth Allocation). DBA is a critical technology in GPON systems that dynamically allocates upstream bandwidth to Optical Network Units (ONUs) based on their real-time traffic demands. This ensures efficient utilization of the available bandwidth and prevents congestion in the upstream direction.
T-CONT (Traffic Container): While T-CONT is used to classify and manage different types of traffic (e.g., voice, video, data), it is not responsible for bandwidth allocation.
WDM (Wavelength Division Multiplexing): WDM is a technology used in optical networks to transmit multiple signals over a single fiber using different wavelengths. It is unrelated to bandwidth allocation in GPON.
Type B: Refers to a protection mechanism in GPON, not bandwidth allocation.
Reference: Huawei GPON Technology White Paper
ITU-T G.984.x Standards for GPON
Question #22
Which of the following functional modules does the NCE-T support?
- A . Analysis module
- B . Forwarding module
- C . Management module
- D . Control module
Correct Answer: A, C, D
A, C, D
Explanation:
The NCE-T (Network Cloud Engine – Transport) is a modular platform that supports multiple functional modules for managing optical transport networks. Here’s an analysis of each option:
Analysis Module: Provides AI-driven analytics for network performance monitoring, fault prediction, and optimization.
Forwarding Module: The NCE-T does not include a forwarding module, as this function is handled by the underlying network devices (e.g., routers, switches).
Management Module: Handles device configuration, fault monitoring, and performance management.
Control Module: Provides centralized control over network resources, enabling features like automatic service provisioning and policy enforcement.
Thus, the correct answers are A (Analysis module), C (Management module), and D (Control module).
Reference: Huawei NCE-T Product Documentation
Huawei Optical Transport Network Solution Guide
A, C, D
Explanation:
The NCE-T (Network Cloud Engine – Transport) is a modular platform that supports multiple functional modules for managing optical transport networks. Here’s an analysis of each option:
Analysis Module: Provides AI-driven analytics for network performance monitoring, fault prediction, and optimization.
Forwarding Module: The NCE-T does not include a forwarding module, as this function is handled by the underlying network devices (e.g., routers, switches).
Management Module: Handles device configuration, fault monitoring, and performance management.
Control Module: Provides centralized control over network resources, enabling features like automatic service provisioning and policy enforcement.
Thus, the correct answers are A (Analysis module), C (Management module), and D (Control module).
Reference: Huawei NCE-T Product Documentation
Huawei Optical Transport Network Solution Guide
Question #23
If NCE-FAN Lite quotation is based on Bare Metal deployment, Huawei provides TaiShan Server.
Which offerings should be selected?
- A . Network Cloud Engine-FAN HW
- B . Network Cloud Engine-FAN Lite
- C . NCE_FusionCompute
- D . Network Cloud Engine-FAN
- E . Network Cloud Engine-FAN Lite HW
Correct Answer: E
E
Explanation:
When deploying NCE-FAN Liteon aBare Metal infrastructure, Huawei recommends using theTaiShan Server, which is part of its ARM-based server portfolio. In this scenario, the correct offering to select is Network Cloud Engine-FAN Lite HW.
The "HW" suffix indicates that the solution includes hardware components (e.g., the TaiShan Server) in addition to the software. This is ideal for customers who prefer an integrated hardware and software package rather than deploying the software on their own servers.
Other options like "Network Cloud Engine-FAN Lite" or "NCE_FusionCompute" are software-only solutions and do not include the TaiShan Server.
Reference: Huawei NCE-FAN Lite Deployment Guide
TaiShan Server Product Documentation
E
Explanation:
When deploying NCE-FAN Liteon aBare Metal infrastructure, Huawei recommends using theTaiShan Server, which is part of its ARM-based server portfolio. In this scenario, the correct offering to select is Network Cloud Engine-FAN Lite HW.
The "HW" suffix indicates that the solution includes hardware components (e.g., the TaiShan Server) in addition to the software. This is ideal for customers who prefer an integrated hardware and software package rather than deploying the software on their own servers.
Other options like "Network Cloud Engine-FAN Lite" or "NCE_FusionCompute" are software-only solutions and do not include the TaiShan Server.
Reference: Huawei NCE-FAN Lite Deployment Guide
TaiShan Server Product Documentation
Question #24
Which of the following features can monitor fiber status and fast locate fault point?
- A . Optical Doctor
- B . Service Doctor
- C . Fiber Doctor
- D . Wavelength Doctor
Correct Answer: C
C
Explanation:
The correct answer is Fiber Doctor. The Fiber Doctor feature is specifically designed to monitor the status of optical fibers and quickly identify fault points in the network.
Here’s how Fiber Doctor works and why it’s essential:
Real-Time Monitoring: Continuously monitors fiber health, detecting issues like attenuation, breaks, or degradation.
Fault Localization: Uses advanced algorithms to pinpoint the exact location of faults, reducing the time and effort required for troubleshooting.
Proactive Maintenance: Identifies potential issues before they impact service, enabling preventive maintenance and minimizing downtime.
Visualization: Provides a graphical representation of the fiber network, making it easier for operators to understand and address problems.
Other options:
Optical Doctor: Focuses on optimizing optical signal quality but does not specialize in fault localization.
Service Doctor: Monitors service performance (e.g., latency, packet loss) rather than physical fiber status.
Wavelength Doctor: Ensures proper wavelength allocation in WDM systems but does not monitor fiber health.
Reference: Huawei Fiber Doctor Technology White Paper
ITU-T G.652 Standards for Optical Fibers
C
Explanation:
The correct answer is Fiber Doctor. The Fiber Doctor feature is specifically designed to monitor the status of optical fibers and quickly identify fault points in the network.
Here’s how Fiber Doctor works and why it’s essential:
Real-Time Monitoring: Continuously monitors fiber health, detecting issues like attenuation, breaks, or degradation.
Fault Localization: Uses advanced algorithms to pinpoint the exact location of faults, reducing the time and effort required for troubleshooting.
Proactive Maintenance: Identifies potential issues before they impact service, enabling preventive maintenance and minimizing downtime.
Visualization: Provides a graphical representation of the fiber network, making it easier for operators to understand and address problems.
Other options:
Optical Doctor: Focuses on optimizing optical signal quality but does not specialize in fault localization.
Service Doctor: Monitors service performance (e.g., latency, packet loss) rather than physical fiber status.
Wavelength Doctor: Ensures proper wavelength allocation in WDM systems but does not monitor fiber health.
Reference: Huawei Fiber Doctor Technology White Paper
ITU-T G.652 Standards for Optical Fibers
Question #25
Which of the following 3rd party products are mapping with OptiXtrans DC908?
- A . Ciena Wave Server Ai
- B . Ciena 5430
- C . Cisco NCS 5000
- D . Infinera Groove G30
- E . Cisco NCS 1004
Correct Answer: A, D, E
A, D, E
Explanation:
The correct answers are Ciena Wave Server Ai, Infinera Groove G30, and Cisco NCS 1004. These third-party products are direct competitors or complementary solutions to the Huawei OptiXtrans DC908, offering similar capabilities for high-capacity optical transport.
Here’s an overview of each product:
Ciena Wave Server Ai: A compact, high-capacity optical platform designed for data center interconnects (DCI) and metro networks. It supports 400G wavelengths and is comparable to the DC908 in terms of density and performance.
Infinera Groove G30: A modular optical transport platform optimized for high-speed DCI and backbone networks. It supports 400G wavelengths and offers flexible service aggregation, similar to the DC908.
Cisco NCS 1004: A compact optical transport device designed for high-capacity DCI and backbone
networks. It supports 400G wavelengths and integrates seamlessly with Cisco’s network management tools, much like the DC908 with Huawei’s NCE.
Other options:
Ciena 5430: While Ciena offers robust optical transport solutions, the5430is not directly comparable to the DC908, as it focuses on packet-optical convergence rather than pure optical transport.
Cisco NCS 5000: This series is more focused on router-based solutions rather than optical transport platforms like the DC908.
These products highlight the competitive landscape in the optical networking market, where vendors strive to deliver high-performance, scalable solutions for modern networks.
Reference: Huawei OptiXtrans DC908 Product Documentation
Ciena Wave Server Ai and Groove G30 Product Specifications
Cisco NCS Series Product Documentation
A, D, E
Explanation:
The correct answers are Ciena Wave Server Ai, Infinera Groove G30, and Cisco NCS 1004. These third-party products are direct competitors or complementary solutions to the Huawei OptiXtrans DC908, offering similar capabilities for high-capacity optical transport.
Here’s an overview of each product:
Ciena Wave Server Ai: A compact, high-capacity optical platform designed for data center interconnects (DCI) and metro networks. It supports 400G wavelengths and is comparable to the DC908 in terms of density and performance.
Infinera Groove G30: A modular optical transport platform optimized for high-speed DCI and backbone networks. It supports 400G wavelengths and offers flexible service aggregation, similar to the DC908.
Cisco NCS 1004: A compact optical transport device designed for high-capacity DCI and backbone
networks. It supports 400G wavelengths and integrates seamlessly with Cisco’s network management tools, much like the DC908 with Huawei’s NCE.
Other options:
Ciena 5430: While Ciena offers robust optical transport solutions, the5430is not directly comparable to the DC908, as it focuses on packet-optical convergence rather than pure optical transport.
Cisco NCS 5000: This series is more focused on router-based solutions rather than optical transport platforms like the DC908.
These products highlight the competitive landscape in the optical networking market, where vendors strive to deliver high-performance, scalable solutions for modern networks.
Reference: Huawei OptiXtrans DC908 Product Documentation
Ciena Wave Server Ai and Groove G30 Product Specifications
Cisco NCS Series Product Documentation
Question #26
Huawei Metro & Access WDM market share is No. 1.
- A . True
- B . False
Correct Answer: A
A
Explanation:
Huawei has consistently rankedNo. 1 in the Metro & Access WDM (Wavelength Division
Multiplexing) market share globally. This leadership position is attributed to its innovative optical transport solutions, such as theOSN 9800 seriesandOptiXtrans E9600 series, which cater to a wide range of industries and applications.
Huawei’s success in this domain is driven by:
Advanced technologies like Super-C band, flexible grid, and high-speed interfaces (e.g., 400G/800G). Comprehensive support for multiple services, including OTN, SDH, and packet-based traffic. Strong global presence and partnerships with service providers, enterprises, and governments. This dominance is well-documented in industry reports from firms like Dell’Oro Group and Omdia.
Reference: Dell’Oro Group Optical Transport Market Report
Huawei Metro & Access WDM Solution Guide
A
Explanation:
Huawei has consistently rankedNo. 1 in the Metro & Access WDM (Wavelength Division
Multiplexing) market share globally. This leadership position is attributed to its innovative optical transport solutions, such as theOSN 9800 seriesandOptiXtrans E9600 series, which cater to a wide range of industries and applications.
Huawei’s success in this domain is driven by:
Advanced technologies like Super-C band, flexible grid, and high-speed interfaces (e.g., 400G/800G). Comprehensive support for multiple services, including OTN, SDH, and packet-based traffic. Strong global presence and partnerships with service providers, enterprises, and governments. This dominance is well-documented in industry reports from firms like Dell’Oro Group and Omdia.
Reference: Dell’Oro Group Optical Transport Market Report
Huawei Metro & Access WDM Solution Guide
Question #27
Which board on OptiXtrans DC908 can support 400G/A?
- A . MD02
- B . MS04
- C . MD02A
- D . N602
Correct Answer: C
C
Explanation:
The correct answer isMD02A. TheMD02A board in the OptiXtrans DC908platform supports400G per wavelength, enabling high-capacity data transmission for backbone and core networks.
Key features of the MD02A board include:
High-Speed Transmission: Supports data rates up to400G per wavelength, leveraging advanced modulation techniques like DP-16QAM.
Flexibility: Compatible with various network architectures, including OTN, WDM, and Ethernet.
Scalability: Can be integrated into existing networks to boost capacity without requiring a complete overhaul.
Efficiency: Optimizes spectral efficiency, maximizing the utilization of available fiber resources.
Other options:
MD02: An earlier version of the board, typically supporting lower data rates.
MS04: Focuses on mid-range applications, not 400G.
N602: Designed for access networks rather than high-speed backbone transmission.
Reference: Huawei OptiXtrans DC908 Product Documentation
ITU-T G.709 Standards for OTN
C
Explanation:
The correct answer isMD02A. TheMD02A board in the OptiXtrans DC908platform supports400G per wavelength, enabling high-capacity data transmission for backbone and core networks.
Key features of the MD02A board include:
High-Speed Transmission: Supports data rates up to400G per wavelength, leveraging advanced modulation techniques like DP-16QAM.
Flexibility: Compatible with various network architectures, including OTN, WDM, and Ethernet.
Scalability: Can be integrated into existing networks to boost capacity without requiring a complete overhaul.
Efficiency: Optimizes spectral efficiency, maximizing the utilization of available fiber resources.
Other options:
MD02: An earlier version of the board, typically supporting lower data rates.
MS04: Focuses on mid-range applications, not 400G.
N602: Designed for access networks rather than high-speed backbone transmission.
Reference: Huawei OptiXtrans DC908 Product Documentation
ITU-T G.709 Standards for OTN
Question #28
Which of the following boards is NOT a PCM board?
- A . DXM
- B . AT8
- C . TTA
- D . FXSO12
Correct Answer: C
C
Explanation:
The correct answer is TTA. The TTA boardisnota PCM (Pulse Code Modulation) board; it is typically used for other purposes, such as Ethernet switching or aggregation.
Here’s an overview of the options:
DXM: A PCM board used for digital cross-connect and multiplexing in optical networks.
AT8: A PCM board that supports analog-to-digital conversion for voice and data services.
TTA: Not a PCM board; it is often used for Ethernet switching or aggregation in access networks.
FXSO12: A PCM board that provides interfaces for analog voice and data services.
PCM boards are essential for converting analog signals into digital format and vice versa, enabling efficient transmission over digital networks. The TTA board, however, serves a different purpose and is not classified as a PCM board.
Reference: Huawei PCM Board Specifications
ITU-T G.703 Standards for PCM
C
Explanation:
The correct answer is TTA. The TTA boardisnota PCM (Pulse Code Modulation) board; it is typically used for other purposes, such as Ethernet switching or aggregation.
Here’s an overview of the options:
DXM: A PCM board used for digital cross-connect and multiplexing in optical networks.
AT8: A PCM board that supports analog-to-digital conversion for voice and data services.
TTA: Not a PCM board; it is often used for Ethernet switching or aggregation in access networks.
FXSO12: A PCM board that provides interfaces for analog voice and data services.
PCM boards are essential for converting analog signals into digital format and vice versa, enabling efficient transmission over digital networks. The TTA board, however, serves a different purpose and is not classified as a PCM board.
Reference: Huawei PCM Board Specifications
ITU-T G.703 Standards for PCM
Question #29
In which of the following slots can the control board be functioning for EA5800-X15?
- A . 9
- B . 7
- C . 8
- D . 10
Correct Answer: C
C
Explanation:
The correct answer is Slot 8. In the Huawei EA5800-X15 OLT, the control board is designed to be installed in Slot 8. The control board serves as the central processing unit of the OLT, managing system operations, traffic forwarding, and communication with other components.
Here’s why Slot 8 is designated for the control board:
Centralized Location: Slot 8 is strategically positioned to ensure balanced power distribution and efficient heat dissipation, which are critical for maintaining system stability.
Redundancy Support: The EA5800-X15 supports dual control boards for high availability, with the second control board typically installed in Slot 7. This redundancy ensures uninterrupted operation in case of a failure.
Compatibility: Only specific slots are compatible with control boards due to their unique hardware and connectivity requirements.
Slots 9 and 10 are typically reserved for service boards or uplink modules, while Slot 7 may house a secondary control board.
Reference: Huawei EA5800 OLT Hardware Guide
Huawei GPON Technology White Paper
C
Explanation:
The correct answer is Slot 8. In the Huawei EA5800-X15 OLT, the control board is designed to be installed in Slot 8. The control board serves as the central processing unit of the OLT, managing system operations, traffic forwarding, and communication with other components.
Here’s why Slot 8 is designated for the control board:
Centralized Location: Slot 8 is strategically positioned to ensure balanced power distribution and efficient heat dissipation, which are critical for maintaining system stability.
Redundancy Support: The EA5800-X15 supports dual control boards for high availability, with the second control board typically installed in Slot 7. This redundancy ensures uninterrupted operation in case of a failure.
Compatibility: Only specific slots are compatible with control boards due to their unique hardware and connectivity requirements.
Slots 9 and 10 are typically reserved for service boards or uplink modules, while Slot 7 may house a secondary control board.
Reference: Huawei EA5800 OLT Hardware Guide
Huawei GPON Technology White Paper
Question #30
Which of the following scenarios could use NCE-T Lite products?
- A . The management capacity is less than 1000 equivalent NEs.
- B . The management capacity is more than 5000 equivalent NEs.
- C . The management capacity is more than 4000 equivalent NEs.
- D . The management capacity is more than 3000 equivalent NEs.
Correct Answer: A
A
Explanation:
The correct answer is The management capacity is less than 1000 equivalent NEs. TheNCE-T Liteis a lightweight version of Huawei’s NCE-Tplatform, designed for small to medium-sized optical transport networks with limited management needs.
Key characteristics of NCE-T Lite include:
Scalability: Supports up to1000 equivalent NEs (Network Elements), making it suitable for smaller networks like enterprise campuses, regional ISPs, or edge locations.
Cost Efficiency: Offers a simplified feature set compared to the full NCE-T, reducing costs for organizations with limited budgets.
Ease of Deployment: Simplifies network operations with centralized monitoring, configuration, and troubleshooting capabilities.
Use Cases: Ideal for scenarios where high-end features like advanced analytics or large-scale orchestration are not required.
Other options:
More than 5000, 4000, or 3000 NEs: These refer to larger-scale deployments that exceed the capacity of NCE-T Lite. For such scenarios, the full version of NCE-T or other advanced management platforms would be required.
NCE-T Lite strikes a balance between functionality and affordability, making it accessible for organizations with modest network requirements.
Reference: Huawei NCE-T Product Documentation
ITU-T G.709 Standards for OTN
A
Explanation:
The correct answer is The management capacity is less than 1000 equivalent NEs. TheNCE-T Liteis a lightweight version of Huawei’s NCE-Tplatform, designed for small to medium-sized optical transport networks with limited management needs.
Key characteristics of NCE-T Lite include:
Scalability: Supports up to1000 equivalent NEs (Network Elements), making it suitable for smaller networks like enterprise campuses, regional ISPs, or edge locations.
Cost Efficiency: Offers a simplified feature set compared to the full NCE-T, reducing costs for organizations with limited budgets.
Ease of Deployment: Simplifies network operations with centralized monitoring, configuration, and troubleshooting capabilities.
Use Cases: Ideal for scenarios where high-end features like advanced analytics or large-scale orchestration are not required.
Other options:
More than 5000, 4000, or 3000 NEs: These refer to larger-scale deployments that exceed the capacity of NCE-T Lite. For such scenarios, the full version of NCE-T or other advanced management platforms would be required.
NCE-T Lite strikes a balance between functionality and affordability, making it accessible for organizations with modest network requirements.
Reference: Huawei NCE-T Product Documentation
ITU-T G.709 Standards for OTN