Huawei H19-315 Practice Exams
Last updated on Oct 22,2026- Exam Code: H19-315
- Exam Name: HCSA-Presales-Transmission & Access
- Certification Provider: Huawei
- Latest update: Oct 22,2026
Question #71
AES-128 is the encryption algorithm used by GPON for downstream.
- A . True
- B . False
Correct Answer: B
B
Explanation:
GPON (Gigabit Passive Optical Network) does not use AES-128 encryption for downstream traffic. Instead, GPON uses AES-128 encryptiononly for upstream trafficto ensure data security between the Optical Network Unit (ONU) and the Optical Line Terminal (OLT). Downstream traffic in GPON is broadcasted to all ONUs, and encryption is not applied because the data is intended for multiple users. The encryption key is dynamically managed by the OLT and distributed securely to the ONUs.
This behavior is defined in theITU-T G.984 standard, which specifies the GPON architecture and security mechanisms. For downstream traffic, the security relies on higher-layer protocols (e.g., IPsec or application-level encryption).
Reference: ITU-T G.984 Standard – GPON Architecture and Security
Huawei GPON Technical Documentation
B
Explanation:
GPON (Gigabit Passive Optical Network) does not use AES-128 encryption for downstream traffic. Instead, GPON uses AES-128 encryptiononly for upstream trafficto ensure data security between the Optical Network Unit (ONU) and the Optical Line Terminal (OLT). Downstream traffic in GPON is broadcasted to all ONUs, and encryption is not applied because the data is intended for multiple users. The encryption key is dynamically managed by the OLT and distributed securely to the ONUs.
This behavior is defined in theITU-T G.984 standard, which specifies the GPON architecture and security mechanisms. For downstream traffic, the security relies on higher-layer protocols (e.g., IPsec or application-level encryption).
Reference: ITU-T G.984 Standard – GPON Architecture and Security
Huawei GPON Technical Documentation
Question #72
NCE-FAN can manage OLT series devices.
- A . True
- B . False
Correct Answer: A
A
Explanation:
The statement is True. The NCE-FAN platform is specifically designed to manage OLT (Optical Line Terminal) series devices, providing centralized control and monitoring for optical access networks.
Key capabilities of NCE-FAN in managing OLT devices include:
Configuration Management: Automates the provisioning and configuration of OLTs, reducing manual errors and speeding up deployments.
Performance Monitoring: Tracks key metrics like bandwidth utilization, latency, and error rates to ensure optimal network performance.
Fault Management: Detects and resolves issues proactively, minimizing service disruptions.
Service Orchestration: Coordinates the delivery of services like IPTV, VoIP, and broadband internet across multiple OLTs.
By integrating OLT management into a unified platform, NCE-FAN simplifies operations and enhances the scalability of optical access networks.
Reference: Huawei NCE-FAN Product Documentation
Huawei OLT Series Device Manuals
A
Explanation:
The statement is True. The NCE-FAN platform is specifically designed to manage OLT (Optical Line Terminal) series devices, providing centralized control and monitoring for optical access networks.
Key capabilities of NCE-FAN in managing OLT devices include:
Configuration Management: Automates the provisioning and configuration of OLTs, reducing manual errors and speeding up deployments.
Performance Monitoring: Tracks key metrics like bandwidth utilization, latency, and error rates to ensure optimal network performance.
Fault Management: Detects and resolves issues proactively, minimizing service disruptions.
Service Orchestration: Coordinates the delivery of services like IPTV, VoIP, and broadband internet across multiple OLTs.
By integrating OLT management into a unified platform, NCE-FAN simplifies operations and enhances the scalability of optical access networks.
Reference: Huawei NCE-FAN Product Documentation
Huawei OLT Series Device Manuals
Question #73
NCE-T Lite does NOT support virtualization deployment.
- A . True
- B . False
Correct Answer: A
A
Explanation:
The statement is True. The NCE-T Litedoesnot support virtualization deployment. Instead, it is designed as a physical applianceorstandalone software for small to medium-sized optical transport networks.
Here’s why NCE-T Lite lacks virtualization support:
Target Audience: NCE-T Lite is aimed at organizations with limited network management needs, such
as small enterprises or regional ISPs. These users typically do not require the complexity of virtualized environments.
Simplified Architecture: By avoiding virtualization, NCE-T Lite reduces deployment complexity and hardware requirements, making it easier to set up and maintain.
Cost Efficiency: Virtualization often requires additional infrastructure (e.g., hypervisors, servers), which can increase costs. NCE-T Lite avoids these expenses by focusing on a lightweight, non-virtualized design.
In contrast, the full version of NCE-Tsupports virtualization, enabling it to run on cloud platforms or virtualized environments for large-scale deployments.
Reference: Huawei NCE-T Product Documentation
ITU-T G.709 Standards for OTN
A
Explanation:
The statement is True. The NCE-T Litedoesnot support virtualization deployment. Instead, it is designed as a physical applianceorstandalone software for small to medium-sized optical transport networks.
Here’s why NCE-T Lite lacks virtualization support:
Target Audience: NCE-T Lite is aimed at organizations with limited network management needs, such
as small enterprises or regional ISPs. These users typically do not require the complexity of virtualized environments.
Simplified Architecture: By avoiding virtualization, NCE-T Lite reduces deployment complexity and hardware requirements, making it easier to set up and maintain.
Cost Efficiency: Virtualization often requires additional infrastructure (e.g., hypervisors, servers), which can increase costs. NCE-T Lite avoids these expenses by focusing on a lightweight, non-virtualized design.
In contrast, the full version of NCE-Tsupports virtualization, enabling it to run on cloud platforms or virtualized environments for large-scale deployments.
Reference: Huawei NCE-T Product Documentation
ITU-T G.709 Standards for OTN
Question #74
Huawei, as an industry leader, has the No. 1 ITU patent contribution.
- A . True
- B . False
Correct Answer: A
A
Explanation:
Huawei is a global leader in telecommunications and networking technologies, and it has consistently rankedNo. 1 in ITU patent contributions. The International Telecommunication Union (ITU) is a specialized agency of the United Nations responsible for standardizing global telecommunications technologies. Huawei’s significant contributions to ITU standards, particularly in areas like 5G, optical transport, and PON technologies, reflect its commitment to innovation and leadership in the industry.
These contributions not only demonstrate Huawei’s technical expertise but also ensure that its products are aligned with the latest global standards, providing customers with cutting-edge solutions.
Reference: ITU Patent Contribution Reports
Huawei Annual Innovation Report
A
Explanation:
Huawei is a global leader in telecommunications and networking technologies, and it has consistently rankedNo. 1 in ITU patent contributions. The International Telecommunication Union (ITU) is a specialized agency of the United Nations responsible for standardizing global telecommunications technologies. Huawei’s significant contributions to ITU standards, particularly in areas like 5G, optical transport, and PON technologies, reflect its commitment to innovation and leadership in the industry.
These contributions not only demonstrate Huawei’s technical expertise but also ensure that its products are aligned with the latest global standards, providing customers with cutting-edge solutions.
Reference: ITU Patent Contribution Reports
Huawei Annual Innovation Report
Question #75
Which of the following are the main sale products in the Campus OptiX solution?
- A . OLT + ODN + ONU + eSight
- B . OLT + ODN + ONU
- C . OLT + ODN + ONU + U2000
- D . OLT + ONT
Correct Answer: A
A
Explanation:
TheCampus OptiX solutionis a comprehensive offering that integrates multiple components to deliver a complete Passive Optical LAN (POL) solution.
The main sale products include:
OLT (Optical Line Terminal): Central device for managing the network.
ODN (Optical Distribution Network): Passive infrastructure for signal distribution.
ONU/ONT (Optical Network Unit/Terminal): Customer-side devices for connecting end-users.
eSight: Huawei’s network management system (NMS) for centralized monitoring and management of the entire network.
While options like "OLT + ODN + ONU" or "OLT + ONT" represent subsets of the solution, the inclusion ofeSightis critical for effective network management and operation, making option A the most complete and accurate choice.
Reference: Huawei Campus OptiX Solution Guide
eSight Product Documentation
A
Explanation:
TheCampus OptiX solutionis a comprehensive offering that integrates multiple components to deliver a complete Passive Optical LAN (POL) solution.
The main sale products include:
OLT (Optical Line Terminal): Central device for managing the network.
ODN (Optical Distribution Network): Passive infrastructure for signal distribution.
ONU/ONT (Optical Network Unit/Terminal): Customer-side devices for connecting end-users.
eSight: Huawei’s network management system (NMS) for centralized monitoring and management of the entire network.
While options like "OLT + ODN + ONU" or "OLT + ONT" represent subsets of the solution, the inclusion ofeSightis critical for effective network management and operation, making option A the most complete and accurate choice.
Reference: Huawei Campus OptiX Solution Guide
eSight Product Documentation
Question #76
Which of the following are highlights of OptiXtrans DC908?
- A . High Security
- B . Intelligent O&M
- C . Simplified Provisioning
- D . Ultra Broadband & High Integration
Correct Answer: A, B, C, D
A, B, C, D
Explanation:
The OptiXtrans DC908is a cutting-edge data center interconnect (DCI) solution with several key highlights:
High Security: Provides end-to-end encryption and physical isolation to protect sensitive data.
Intelligent O&M: Leverages AI-driven analytics and automation for efficient network management.
Simplified Provisioning: Enables plug-and-play deployment and automated service provisioning, reducing operational complexity.
Ultra Broadband & High Integration: Supports up to 800G per wavelength and integrates multiple functions into a compact 2U form factor, maximizing capacity and efficiency.
These features make the DC908 ideal for modern data center interconnect scenarios.
Reference: Huawei OptiXtrans DC908 Product Documentation
Huawei DCI Solution Guide
A, B, C, D
Explanation:
The OptiXtrans DC908is a cutting-edge data center interconnect (DCI) solution with several key highlights:
High Security: Provides end-to-end encryption and physical isolation to protect sensitive data.
Intelligent O&M: Leverages AI-driven analytics and automation for efficient network management.
Simplified Provisioning: Enables plug-and-play deployment and automated service provisioning, reducing operational complexity.
Ultra Broadband & High Integration: Supports up to 800G per wavelength and integrates multiple functions into a compact 2U form factor, maximizing capacity and efficiency.
These features make the DC908 ideal for modern data center interconnect scenarios.
Reference: Huawei OptiXtrans DC908 Product Documentation
Huawei DCI Solution Guide
Question #77
Which of the following scenarios can OSN 9800 be used in?
- A . ISP
- B . Safe City
- C . Campus
- D . Electrical Grid
- E . Railway
Correct Answer: A, B, D, E
A, B, D, E
Explanation:
The OSN 9800series is a versatile optical transport platform designed for high-capacity and long-haul networks. It is widely used in the following scenarios:
ISP (Internet Service Provider): Provides backbone connectivity for large-scale data centers and internet services.
Safe City: Supports video surveillance and backhaul applications for public safety.
Electrical Grid: Enables reliable communication for smart grid operations, including power distribution and monitoring.
Railway: Facilitates mission-critical communications for railway signaling, control, and passenger services.
While the OSN 9800 can technically support campus networks, it is more commonly deployed in scenarios requiring high bandwidth and long-distance transmission, making it less typical for campus environments.
Reference: Huawei OSN 9800 Series Product Documentation
Huawei Optical Transport Network Solution Guide
A, B, D, E
Explanation:
The OSN 9800series is a versatile optical transport platform designed for high-capacity and long-haul networks. It is widely used in the following scenarios:
ISP (Internet Service Provider): Provides backbone connectivity for large-scale data centers and internet services.
Safe City: Supports video surveillance and backhaul applications for public safety.
Electrical Grid: Enables reliable communication for smart grid operations, including power distribution and monitoring.
Railway: Facilitates mission-critical communications for railway signaling, control, and passenger services.
While the OSN 9800 can technically support campus networks, it is more commonly deployed in scenarios requiring high bandwidth and long-distance transmission, making it less typical for campus environments.
Reference: Huawei OSN 9800 Series Product Documentation
Huawei Optical Transport Network Solution Guide
Question #78
Which of the following are the components for the FTTH network?
- A . ONU/ONT
- B . OLT
- C . Splitter
- D . NMS
- E . ODF
Correct Answer: A, B, C, D, E
A, B, C, D, E
Explanation:
The FTTH (Fiber-to-the-Home) network consists of several key components that work together to deliver high-speed connectivity to end-users:
ONU/ONT (Optical Network Unit/Terminal): Customer-side device that converts optical signals into electrical signals for end-user devices.
OLT (Optical Line Terminal): Central device located at the service provider’s premises, managing communication with multiple ONUs.
Splitter: Passive optical device that divides the signal from the OLT into multiple paths for distribution to ONUs.
NMS (Network Management System): Software platform (e.g., eSight) for centralized monitoring and management of the FTTH network.
ODF (Optical Distribution Frame): Infrastructure component used for organizing and connecting optical fibers.
Each of these components plays a critical role in ensuring efficient and reliable FTTH deployments.
Reference: ITU-T G.984 Standard – FTTH Architecture
Huawei FTTH Solution Guide
A, B, C, D, E
Explanation:
The FTTH (Fiber-to-the-Home) network consists of several key components that work together to deliver high-speed connectivity to end-users:
ONU/ONT (Optical Network Unit/Terminal): Customer-side device that converts optical signals into electrical signals for end-user devices.
OLT (Optical Line Terminal): Central device located at the service provider’s premises, managing communication with multiple ONUs.
Splitter: Passive optical device that divides the signal from the OLT into multiple paths for distribution to ONUs.
NMS (Network Management System): Software platform (e.g., eSight) for centralized monitoring and management of the FTTH network.
ODF (Optical Distribution Frame): Infrastructure component used for organizing and connecting optical fibers.
Each of these components plays a critical role in ensuring efficient and reliable FTTH deployments.
Reference: ITU-T G.984 Standard – FTTH Architecture
Huawei FTTH Solution Guide
Question #79
Which of the following features is the special requirement for smart grid?
- A . Transponder
- B . SAN Service
- C . ROADM
- D . PCM
Correct Answer: D
D
Explanation:
The correct answer is PCM (Pulse Code Modulation).PCMis a critical feature for smart grids because it enables the integration of legacy analog and digital services, which are still widely used in grid communications.
Here’s why PCM is essential for smart grids:
Legacy Support: Many grid systems rely on analog signaling for SCADA, protection relays, and voice communication. PCM boards convert these analog signals into digital format for transmission over modern networks.
Reliability: PCM ensures high-quality, lossless transmission of critical data, such as fault detection and control commands.
Scalability: PCM solutions can be integrated into larger optical transport platforms, such as OTN or SDH, to support growing grid requirements.
Other options:
Transponder: Used for wavelength conversion in optical networks but does not address the specific needs of smart grids.
SAN Service: Refers to Storage Area Networks, which are unrelated to grid communications.
ROADM (Reconfigurable Optical Add-Drop Multiplexer): Used for dynamic wavelength routing in optical networks but does not directly support grid-specific requirements.
Reference: Huawei PCM Technology White Paper
ITU-T G.703 Standards for PCM
D
Explanation:
The correct answer is PCM (Pulse Code Modulation).PCMis a critical feature for smart grids because it enables the integration of legacy analog and digital services, which are still widely used in grid communications.
Here’s why PCM is essential for smart grids:
Legacy Support: Many grid systems rely on analog signaling for SCADA, protection relays, and voice communication. PCM boards convert these analog signals into digital format for transmission over modern networks.
Reliability: PCM ensures high-quality, lossless transmission of critical data, such as fault detection and control commands.
Scalability: PCM solutions can be integrated into larger optical transport platforms, such as OTN or SDH, to support growing grid requirements.
Other options:
Transponder: Used for wavelength conversion in optical networks but does not address the specific needs of smart grids.
SAN Service: Refers to Storage Area Networks, which are unrelated to grid communications.
ROADM (Reconfigurable Optical Add-Drop Multiplexer): Used for dynamic wavelength routing in optical networks but does not directly support grid-specific requirements.
Reference: Huawei PCM Technology White Paper
ITU-T G.703 Standards for PCM
Question #80
OptiXtrans E9600 series can be used in Grid, Traffic, ISP, Safe City.
- A . True
- B . False
Correct Answer: A
A
Explanation:
The statement is True. The OptiXtrans E9600 series is a versatile optical transmission platform that can be deployed in various industries, including Grid, Traffic, ISP, and Safe City applications.
Here’s how the E9600 series supports these scenarios:
Grid: Provides reliable communication for smart grid operations, including SCADA systems and substation automation.
Traffic: Enables mission-critical communications for intelligent transportation systems (ITS), such as traffic signaling and toll collection.
ISP: Supports high-capacity backbone connectivity for delivering broadband, IPTV, and cloud services.
Safe City: Facilitates video surveillance backhaul, enabling real-time monitoring and analysis for public safety.
The E9600 series’ flexibility, scalability, and support for multiple technologies (e.g., OTN, SDH, Ethernet) make it suitable for diverse use cases across industries.
Reference: Huawei OptiXtrans E9600 Series Product Documentation
ITU-T G.709 Standards for OTN
A
Explanation:
The statement is True. The OptiXtrans E9600 series is a versatile optical transmission platform that can be deployed in various industries, including Grid, Traffic, ISP, and Safe City applications.
Here’s how the E9600 series supports these scenarios:
Grid: Provides reliable communication for smart grid operations, including SCADA systems and substation automation.
Traffic: Enables mission-critical communications for intelligent transportation systems (ITS), such as traffic signaling and toll collection.
ISP: Supports high-capacity backbone connectivity for delivering broadband, IPTV, and cloud services.
Safe City: Facilitates video surveillance backhaul, enabling real-time monitoring and analysis for public safety.
The E9600 series’ flexibility, scalability, and support for multiple technologies (e.g., OTN, SDH, Ethernet) make it suitable for diverse use cases across industries.
Reference: Huawei OptiXtrans E9600 Series Product Documentation
ITU-T G.709 Standards for OTN