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 #61
Which of the following does Hardware redundancy of OLT products include?
- A . Uplink Port
- B . Power Board
- C . Service Port
- D . Main Control Board
Correct Answer: B, D
B, D
Explanation:
The correct answers are Power Board and Main Control Board. Hardware redundancy is a critical feature of Optical Line Terminal (OLT) products to ensure high availability and fault tolerance in carrier-grade networks.
Power Board Redundancy: OLTs like the Huawei EA5800 support dual power supplies to prevent downtime in case of a power supply failure. This redundancy is essential for maintaining continuous service delivery.
Main Control Board Redundancy: The main control board manages system operations and traffic forwarding. Dual control boards ensure that if one fails, the backup takes over seamlessly, minimizing service disruption.
Other options:
Uplink Port: While uplink ports are critical for connecting the OLT to the core network, they are not typically redundant at the hardware level. Instead, redundancy is achieved through network design (e.g., multiple uplinks).
Service Port: Service ports connect to ONUs and are not individually redundant. However, the OLT’s distributed architecture ensures that a failure in one port does not affect the entire system.
Reference: Huawei EA5800 OLT Product Documentation
ITU-T G.984.x Standards for GPON
B, D
Explanation:
The correct answers are Power Board and Main Control Board. Hardware redundancy is a critical feature of Optical Line Terminal (OLT) products to ensure high availability and fault tolerance in carrier-grade networks.
Power Board Redundancy: OLTs like the Huawei EA5800 support dual power supplies to prevent downtime in case of a power supply failure. This redundancy is essential for maintaining continuous service delivery.
Main Control Board Redundancy: The main control board manages system operations and traffic forwarding. Dual control boards ensure that if one fails, the backup takes over seamlessly, minimizing service disruption.
Other options:
Uplink Port: While uplink ports are critical for connecting the OLT to the core network, they are not typically redundant at the hardware level. Instead, redundancy is achieved through network design (e.g., multiple uplinks).
Service Port: Service ports connect to ONUs and are not individually redundant. However, the OLT’s distributed architecture ensures that a failure in one port does not affect the entire system.
Reference: Huawei EA5800 OLT Product Documentation
ITU-T G.984.x Standards for GPON
Question #62
What is the maximum single-fiber capacity of OptiXtrans DC908?
- A . 38.4T
- B . 16T
- C . 48T
- D . 24T
Correct Answer: A
A
Explanation:
The correct answer is38.4T. The OptiXtrans DC908supports a maximum single-fiber capacity of38.4 Tbps, making it one of the most advanced solutions for high-capacity optical transport.
Here’s how the DC908 achieves this capacity:
WDM Technology: Combines multiple wavelengths on a single fiber, each carrying data at speeds up to400G.
Advanced Modulation: Uses modulation schemes like DP-16QAM to maximize spectral efficiency, enabling higher data rates within the same fiber spectrum.
High Density: Supports up to96 wavelengths per fiber, resulting in a total capacity of38.4 Tbps(96 x 400G).
Future-Proofing: Designed to accommodate emerging technologies like 800G wavelengths, ensuring scalability for future demands.
This level of capacity is critical for applications like data center interconnects, where large volumes of data need to be transmitted over long distances without bottlenecks.
Reference: Huawei OptiXtrans DC908 Product Documentation
ITU-T G.698 Standards for WDM
A
Explanation:
The correct answer is38.4T. The OptiXtrans DC908supports a maximum single-fiber capacity of38.4 Tbps, making it one of the most advanced solutions for high-capacity optical transport.
Here’s how the DC908 achieves this capacity:
WDM Technology: Combines multiple wavelengths on a single fiber, each carrying data at speeds up to400G.
Advanced Modulation: Uses modulation schemes like DP-16QAM to maximize spectral efficiency, enabling higher data rates within the same fiber spectrum.
High Density: Supports up to96 wavelengths per fiber, resulting in a total capacity of38.4 Tbps(96 x 400G).
Future-Proofing: Designed to accommodate emerging technologies like 800G wavelengths, ensuring scalability for future demands.
This level of capacity is critical for applications like data center interconnects, where large volumes of data need to be transmitted over long distances without bottlenecks.
Reference: Huawei OptiXtrans DC908 Product Documentation
ITU-T G.698 Standards for WDM
Question #63
Huawei’s OptiXtrans DC908 product is designed for the DCI application.
- A . True
- B . False
Correct Answer: A
A
Explanation:
The OptiXtrans DC908is specifically designed for Data Center Interconnect (DCI) applications. Its key features align perfectly with the requirements of modern DCI scenarios:
High Capacity: Supports up to 800G per wavelength, enabling ultra-high-speed connectivity between data centers.
Compact Design: The 2U form factor makes it ideal for space-constrained environments.
Low Latency: Optimized for minimal delays, critical for applications like cloud computing and disaster recovery.
Simplified Deployment: Plug-and-play functionality reduces operational complexity.
While other Huawei products (e.g., OptiXtrans E9600) are designed for backbone or metro networks, the DC908 is tailored exclusively for DCI.
Reference: Huawei OptiXtrans DC908 Product Documentation
Huawei DCI Solution Guide
A
Explanation:
The OptiXtrans DC908is specifically designed for Data Center Interconnect (DCI) applications. Its key features align perfectly with the requirements of modern DCI scenarios:
High Capacity: Supports up to 800G per wavelength, enabling ultra-high-speed connectivity between data centers.
Compact Design: The 2U form factor makes it ideal for space-constrained environments.
Low Latency: Optimized for minimal delays, critical for applications like cloud computing and disaster recovery.
Simplified Deployment: Plug-and-play functionality reduces operational complexity.
While other Huawei products (e.g., OptiXtrans E9600) are designed for backbone or metro networks, the DC908 is tailored exclusively for DCI.
Reference: Huawei OptiXtrans DC908 Product Documentation
Huawei DCI Solution Guide
Question #64
OptiXtrans E9605 is very small, usually used in OLA station.
- A . True
- B . False
Correct Answer: A
A
Explanation:
The statement is True. The OptiXtrans E9605is a compact and modular optical transmission device, often deployed in OLA (Optical Line Amplifier) stations.
Key characteristics of the OptiXtrans E9605 include:
Small Form Factor: Its compact design makes it ideal for space-constrained environments, such as OLA stations where only amplification is required.
Amplification Capability: Equipped with optical amplifiers (e.g., EDFA), it boosts optical signals to compensate for attenuation over long distances.
Simplified Deployment: The device is easy to install and maintain, reducing operational complexity in OLA applications.
OLA stations are intermediate points in optical networks where signals are amplified without being regenerated or processed electrically. The OptiXtrans E9605 is specifically optimized for such scenarios.
Reference: Huawei OptiXtrans E9600 Series Product Documentation
ITU-T G.694 Standards for Optical Amplifiers
A
Explanation:
The statement is True. The OptiXtrans E9605is a compact and modular optical transmission device, often deployed in OLA (Optical Line Amplifier) stations.
Key characteristics of the OptiXtrans E9605 include:
Small Form Factor: Its compact design makes it ideal for space-constrained environments, such as OLA stations where only amplification is required.
Amplification Capability: Equipped with optical amplifiers (e.g., EDFA), it boosts optical signals to compensate for attenuation over long distances.
Simplified Deployment: The device is easy to install and maintain, reducing operational complexity in OLA applications.
OLA stations are intermediate points in optical networks where signals are amplified without being regenerated or processed electrically. The OptiXtrans E9605 is specifically optimized for such scenarios.
Reference: Huawei OptiXtrans E9600 Series Product Documentation
ITU-T G.694 Standards for Optical Amplifiers
Question #65
DCI evolves to mesh, simplified, and intelligent network.
- A . True
- B . False
Correct Answer: A
A
Explanation:
The evolution of Data Center Interconnect (DCI) networks has been driven by the increasing demand for high-speed, reliable, and scalable connectivity between data centers. Modern DCI networks are evolving toward the following characteristics:
Mesh Architecture: Enables multiple redundant paths between data centers, improving resilience and fault tolerance.
Simplified Deployment: Leveraging plug-and-play devices and automated provisioning reduces complexity and speeds up deployment.
Intelligent Management: AI-driven analytics and automation optimize network performance, predict faults, and streamline operations.
Huawei’s OptiXtrans DC908exemplifies these trends, offering high capacity, low latency, and intelligent O&M capabilities.
Thus, the statement is correct.
Reference: Huawei DCI Solution Guide
Trends in Data Center Interconnect Evolution
A
Explanation:
The evolution of Data Center Interconnect (DCI) networks has been driven by the increasing demand for high-speed, reliable, and scalable connectivity between data centers. Modern DCI networks are evolving toward the following characteristics:
Mesh Architecture: Enables multiple redundant paths between data centers, improving resilience and fault tolerance.
Simplified Deployment: Leveraging plug-and-play devices and automated provisioning reduces complexity and speeds up deployment.
Intelligent Management: AI-driven analytics and automation optimize network performance, predict faults, and streamline operations.
Huawei’s OptiXtrans DC908exemplifies these trends, offering high capacity, low latency, and intelligent O&M capabilities.
Thus, the statement is correct.
Reference: Huawei DCI Solution Guide
Trends in Data Center Interconnect Evolution
Question #66
Which of the following are the values that Campus OptiX (POL) brings to customers?
- A . Simple architecture
- B . Smart O&M
- C . Easy to evolve
- D . High reliability
Correct Answer: A, B, C, D
A, B, C, D
Explanation:
Campus OptiX (POL) delivers significant value to customers through the following key benefits:
Simple Architecture: POL simplifies network design by using a single fiber infrastructure to deliver multiple services (voice, data, video), reducing complexity and cost.
Smart O&M: With centralized management tools like eSight, POL enables efficient monitoring, troubleshooting, and automation of network operations.
Easy to Evolve: POL supports future-proof technologies like XG-PON and NG-PON2, allowing seamless upgrades to higher bandwidths.
High Reliability: The passive nature of POL (no active components in the ODN) ensures high reliability and low maintenance requirements.
These advantages make POL an attractive solution for enterprise campuses and other large-scale deployments.
Reference: Huawei Campus OptiX Solution Guide
POL Deployment Best Practices
A, B, C, D
Explanation:
Campus OptiX (POL) delivers significant value to customers through the following key benefits:
Simple Architecture: POL simplifies network design by using a single fiber infrastructure to deliver multiple services (voice, data, video), reducing complexity and cost.
Smart O&M: With centralized management tools like eSight, POL enables efficient monitoring, troubleshooting, and automation of network operations.
Easy to Evolve: POL supports future-proof technologies like XG-PON and NG-PON2, allowing seamless upgrades to higher bandwidths.
High Reliability: The passive nature of POL (no active components in the ODN) ensures high reliability and low maintenance requirements.
These advantages make POL an attractive solution for enterprise campuses and other large-scale deployments.
Reference: Huawei Campus OptiX Solution Guide
POL Deployment Best Practices
Question #67
Which of the following statements about OptiXtrans DC908 is correct?
- A . OptiXtrans DC908 cannot be managed by NCE.
- B . OptiXtrans DC908 is 2U high, which is able to install in 600mm deep rack.
- C . OptiXtrans DC908 can support L2 function.
- D . OptiXtrans DC908 is designed for the DCN application.
Correct Answer: B
B
Explanation:
The correct answer is OptiXtrans DC908 is 2U high, which is able to install in 600mm deep rack.
Here’s an analysis of each option:
B
Explanation:
The correct answer is OptiXtrans DC908 is 2U high, which is able to install in 600mm deep rack.
Here’s an analysis of each option:
Question #68
The NCE-T quotation is a permanent LICENSE + SNS annual fee model.
- A . True
- B . False
Correct Answer: A
A
Explanation:
The NCE-T (Network Cloud Engine – Transport) follows a licensing model that includes both apermanent license and an SNS (Software Support and Services) annual fee. Here’s how it works:
Permanent License: Grants access to the core features and functionalities of NCE-T indefinitely. This ensures long-term usability without recurring costs for the base software.
SNS Annual Fee: Covers ongoing support, software updates, bug fixes, and technical assistance. Customers must renew this annually to stay current with the latest enhancements and receive priority support.
This hybrid model is common in enterprise-grade software solutions, balancing upfront investment with ongoing operational costs.
Reference: Huawei NCE-T Licensing Guide
Huawei Software Support and Services (SNS) Documentation
A
Explanation:
The NCE-T (Network Cloud Engine – Transport) follows a licensing model that includes both apermanent license and an SNS (Software Support and Services) annual fee. Here’s how it works:
Permanent License: Grants access to the core features and functionalities of NCE-T indefinitely. This ensures long-term usability without recurring costs for the base software.
SNS Annual Fee: Covers ongoing support, software updates, bug fixes, and technical assistance. Customers must renew this annually to stay current with the latest enhancements and receive priority support.
This hybrid model is common in enterprise-grade software solutions, balancing upfront investment with ongoing operational costs.
Reference: Huawei NCE-T Licensing Guide
Huawei Software Support and Services (SNS) Documentation
Question #69
Which of the following are the main sale scenarios of the Campus OptiX (POL) ?
- A . Room-like scenarios, including education, hotel, medical, apartment
- B . Video backhaul scenarios, including Safe City, park monitoring
- C . Wi-Fi backhaul scenarios, including wireless campus, wireless office, wireless hotel
- D . All office scenarios, including wired and wireless access
Correct Answer: A
A
Explanation:
The correct answer is Room-like scenarios, including education, hotel, medical, apartment. Campus OptiX (POL) is primarily designed for enterprise campus environments where high bandwidth, low latency, and simplified network architecture are required. Common scenarios include:
Education: Connecting classrooms, dormitories, and administrative offices.
Hotels: Providing high-speed internet and IPTV services to guests.
Medical: Supporting hospital networks for patient care, imaging, and telemedicine.
Apartments: Delivering triple-play services (data, voice, video) to residents.
While options like video backhaul and Wi-Fi backhaul are valid use cases for optical networks, they are typically associated with carrier-grade solutions rather than enterprise-focused Campus OptiX deployments.
Reference: Huawei Campus OptiX (POL) Solution White Paper
IEEE 802.3ah Standards for PON
A
Explanation:
The correct answer is Room-like scenarios, including education, hotel, medical, apartment. Campus OptiX (POL) is primarily designed for enterprise campus environments where high bandwidth, low latency, and simplified network architecture are required. Common scenarios include:
Education: Connecting classrooms, dormitories, and administrative offices.
Hotels: Providing high-speed internet and IPTV services to guests.
Medical: Supporting hospital networks for patient care, imaging, and telemedicine.
Apartments: Delivering triple-play services (data, voice, video) to residents.
While options like video backhaul and Wi-Fi backhaul are valid use cases for optical networks, they are typically associated with carrier-grade solutions rather than enterprise-focused Campus OptiX deployments.
Reference: Huawei Campus OptiX (POL) Solution White Paper
IEEE 802.3ah Standards for PON
Question #70
EG8040F4 is an ONT product with 4 Gigabit Ethernet interfaces.
- A . True
- B . False
Correct Answer: A
A
Explanation:
TheEG8040F4is a Huawei Optical Network Terminal (ONT) designed for Fiber-to-the-Home (FTTH) deployments. It featuresfour Gigabit Ethernet interfaces, making it suitable for high-speed internet access in residential and small office environments. These interfaces allow users to connect multiple devices, such as computers, smart TVs, and gaming consoles, to the network simultaneously.
In addition to Gigabit Ethernet ports, the EG8040F4 may also include other features like Wi-Fi support, VoIP ports, and USB connectivity, depending on the specific model.
Reference: Huawei EG8040F4 Product Datasheet
Huawei FTTH Solution Guide
A
Explanation:
TheEG8040F4is a Huawei Optical Network Terminal (ONT) designed for Fiber-to-the-Home (FTTH) deployments. It featuresfour Gigabit Ethernet interfaces, making it suitable for high-speed internet access in residential and small office environments. These interfaces allow users to connect multiple devices, such as computers, smart TVs, and gaming consoles, to the network simultaneously.
In addition to Gigabit Ethernet ports, the EG8040F4 may also include other features like Wi-Fi support, VoIP ports, and USB connectivity, depending on the specific model.
Reference: Huawei EG8040F4 Product Datasheet
Huawei FTTH Solution Guide