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 #81
Which of the following devices does NOT support AC power supply?
- A . OSN 9800
- B . OSN 1800 II
- C . OSN 1800 I
- D . OSN 1800 V
Correct Answer: C
C
Explanation:
The correct answer is OSN 1800 I. The OSN 1800 Idoes not support AC power supply; it is designed to operate exclusively on DC power.
Here’s an overview of the options:
OSN 9800: Supports both AC and DC power supplies, making it suitable for diverse deployment scenarios.
OSN 1800 II: Supports both AC and DC power supplies, providing flexibility for different environments.
OSN 1800 I: Designed for compact, cost-effective deployments, it supports only DC power, which may limit its use in certain scenarios.
OSN 1800 V: Supports both AC and DC power supplies, catering to high-capacity metro and access networks.
The lack of AC power support in the OSN 1800 I makes it less versatile compared to other models in the series.
Reference: Huawei OSN 1800 Series Product Documentation
Huawei Power Supply Specifications
C
Explanation:
The correct answer is OSN 1800 I. The OSN 1800 Idoes not support AC power supply; it is designed to operate exclusively on DC power.
Here’s an overview of the options:
OSN 9800: Supports both AC and DC power supplies, making it suitable for diverse deployment scenarios.
OSN 1800 II: Supports both AC and DC power supplies, providing flexibility for different environments.
OSN 1800 I: Designed for compact, cost-effective deployments, it supports only DC power, which may limit its use in certain scenarios.
OSN 1800 V: Supports both AC and DC power supplies, catering to high-capacity metro and access networks.
The lack of AC power support in the OSN 1800 I makes it less versatile compared to other models in the series.
Reference: Huawei OSN 1800 Series Product Documentation
Huawei Power Supply Specifications
Question #82
OTN Cross-connect capacity of OSN 9800 U32E is 32 Tbps per subrack.
- A . True
- B . False
Correct Answer: A
A
Explanation:
The OSN 9800 U32Eis a high-end optical transport platform designed for core and metro-core networks. It provides an OTN cross-connect capacity of 32 Tbps per subrack, making it one of the most powerful systems in Huawei’s optical transport portfolio.
This high capacity is achieved through advanced technologies such as multi-dimensional grooming, flexible grid support, and ultra-high-speed interfaces (e.g., 400G/800G). The OSN 9800 U32E is ideal for handling massive traffic volumes in backbone and regional networks.
Reference: Huawei OSN 9800 U32E Product Datasheet
Huawei Optical Transport Network Solution Guide
A
Explanation:
The OSN 9800 U32Eis a high-end optical transport platform designed for core and metro-core networks. It provides an OTN cross-connect capacity of 32 Tbps per subrack, making it one of the most powerful systems in Huawei’s optical transport portfolio.
This high capacity is achieved through advanced technologies such as multi-dimensional grooming, flexible grid support, and ultra-high-speed interfaces (e.g., 400G/800G). The OSN 9800 U32E is ideal for handling massive traffic volumes in backbone and regional networks.
Reference: Huawei OSN 9800 U32E Product Datasheet
Huawei Optical Transport Network Solution Guide
Question #83
Huawei EA5800 OLT platform supports software upgrade function for network protection.
- A . True
- B . False
Correct Answer: A
A
Explanation:
The statement is True. The Huawei EA5800 OLT platform supports software upgrades, which are critical for ensuring network protection and maintaining optimal performance. Software upgrades allow the OLT to incorporate new features, improve security, fix bugs, and enhance compatibility with emerging technologies.
Key aspects of software upgrades on the EA5800 include:
Security Enhancements: Regular updates patch vulnerabilities, protecting the network from cyber threats like DDoS attacks, unauthorized access, and malware.
Feature Expansion: New functionalities can be added to support evolving use cases, such as 5G backhaul, IoT integration, and advanced QoS (Quality of Service) mechanisms.
Performance Optimization: Upgrades often include improvements to system efficiency, reducing latency and increasing throughput.
Compliance: Ensures adherence to industry standards and regulatory requirements, such as ITU-T G.984.x for GPON and ITU-T G.988 for OMCI (ONT Management and Control Interface).
The ability to perform seamless software upgrades is a hallmark of Huawei’s commitment to future-proofing its solutions, ensuring that networks remain robust and adaptable over time.
Reference: Huawei EA5800 OLT Product Documentation
ITU-T G.984.x and G.988 Standards for PON
A
Explanation:
The statement is True. The Huawei EA5800 OLT platform supports software upgrades, which are critical for ensuring network protection and maintaining optimal performance. Software upgrades allow the OLT to incorporate new features, improve security, fix bugs, and enhance compatibility with emerging technologies.
Key aspects of software upgrades on the EA5800 include:
Security Enhancements: Regular updates patch vulnerabilities, protecting the network from cyber threats like DDoS attacks, unauthorized access, and malware.
Feature Expansion: New functionalities can be added to support evolving use cases, such as 5G backhaul, IoT integration, and advanced QoS (Quality of Service) mechanisms.
Performance Optimization: Upgrades often include improvements to system efficiency, reducing latency and increasing throughput.
Compliance: Ensures adherence to industry standards and regulatory requirements, such as ITU-T G.984.x for GPON and ITU-T G.988 for OMCI (ONT Management and Control Interface).
The ability to perform seamless software upgrades is a hallmark of Huawei’s commitment to future-proofing its solutions, ensuring that networks remain robust and adaptable over time.
Reference: Huawei EA5800 OLT Product Documentation
ITU-T G.984.x and G.988 Standards for PON
Question #84
OptiXtrans products include: E9600, OSN 1800, DC908, and E5800.
- A . True
- B . False
Correct Answer: B
B
Explanation:
The OptiXtrans product family primarily includes advanced optical transport platforms such as theE9600 series, which is designed for high-capacity and long-haul networks. However, the OSN 1800, DC908, andE5800are part of different product lines:
OSN 1800: Belongs to Huawei’s MS-OTN (Multi-Service Optical Transport Network) portfolio, targeting metro and regional networks.
DC908: A data center interconnect (DCI) solution optimized for short-reach, high-capacity links between data centers.
E5800: Not a recognized product in Huawei’s optical transport portfolio.
Thus, the statement is incorrect because not all the listed products belong to the OptiXtrans family.
Reference: Huawei OptiXtrans Product Portfolio
Huawei Optical Transport Network Solution Guide
B
Explanation:
The OptiXtrans product family primarily includes advanced optical transport platforms such as theE9600 series, which is designed for high-capacity and long-haul networks. However, the OSN 1800, DC908, andE5800are part of different product lines:
OSN 1800: Belongs to Huawei’s MS-OTN (Multi-Service Optical Transport Network) portfolio, targeting metro and regional networks.
DC908: A data center interconnect (DCI) solution optimized for short-reach, high-capacity links between data centers.
E5800: Not a recognized product in Huawei’s optical transport portfolio.
Thus, the statement is incorrect because not all the listed products belong to the OptiXtrans family.
Reference: Huawei OptiXtrans Product Portfolio
Huawei Optical Transport Network Solution Guide
Question #85
NCE-T does NOT support virtualization deployment.
- A . True
- B . False
Correct Answer: B
B
Explanation:
The statement is False. TheNCE-T (Network Cloud Engine for Transport) does support virtualization deployment, making it highly flexible and scalable for modern optical transport networks.
Key aspects of NCE-T’s virtualization support include:
Cloud-Native Design: NCE-T can be deployed on cloud platforms, leveraging virtual machines (VMs) or containers for scalability and resource optimization.
Multi-Tenancy: Supports multiple tenants within a single instance, enabling service providers to offer customized solutions to different customers.
Dynamic Scaling: Automatically adjusts resource allocation based on network demand, ensuring optimal performance during peak loads.
Integration with NFV: Works seamlessly with Network Function Virtualization (NFV) frameworks, enabling convergence with other virtualized network functions.
Virtualization enhances NCE-T’s capabilities, making it suitable for large-scale, carrier-grade deployments where flexibility and scalability are critical.
Reference: Huawei NCE-T Product Documentation
ITU-T G.709 Standards for OTN
B
Explanation:
The statement is False. TheNCE-T (Network Cloud Engine for Transport) does support virtualization deployment, making it highly flexible and scalable for modern optical transport networks.
Key aspects of NCE-T’s virtualization support include:
Cloud-Native Design: NCE-T can be deployed on cloud platforms, leveraging virtual machines (VMs) or containers for scalability and resource optimization.
Multi-Tenancy: Supports multiple tenants within a single instance, enabling service providers to offer customized solutions to different customers.
Dynamic Scaling: Automatically adjusts resource allocation based on network demand, ensuring optimal performance during peak loads.
Integration with NFV: Works seamlessly with Network Function Virtualization (NFV) frameworks, enabling convergence with other virtualized network functions.
Virtualization enhances NCE-T’s capabilities, making it suitable for large-scale, carrier-grade deployments where flexibility and scalability are critical.
Reference: Huawei NCE-T Product Documentation
ITU-T G.709 Standards for OTN
Question #86
Which of the following optical modules are used in commercial cases currently?
- A . Class D
- B . Class C+
- C . Class B+
- D . Class F
- E . Class E
Correct Answer: A, B, C
A, B, C
Explanation:
Optical modules are categorized based on their transmission distance and power budget.
The most commonly used classes in commercial deployments are:
Class B+: Supports distances up to 20 km and is widely used in urban and suburban areas.
Class C+: Supports distances up to 40 km and is suitable for medium-range deployments.
Class D: Supports distances up to 60 km and is ideal for long-haul connections in remote areas.
ClassesEandFare either outdated or not commercially viable due to their limited use cases.
Reference: ITU-T G.984 Standard – Optical Module Specifications
Huawei Optical Module Product Guide
A, B, C
Explanation:
Optical modules are categorized based on their transmission distance and power budget.
The most commonly used classes in commercial deployments are:
Class B+: Supports distances up to 20 km and is widely used in urban and suburban areas.
Class C+: Supports distances up to 40 km and is suitable for medium-range deployments.
Class D: Supports distances up to 60 km and is ideal for long-haul connections in remote areas.
ClassesEandFare either outdated or not commercially viable due to their limited use cases.
Reference: ITU-T G.984 Standard – Optical Module Specifications
Huawei Optical Module Product Guide
Question #87
Which of the following are the highlights of the NCE-FAN Home Network?
- A . Intelligent O&M for Home Networks, Reducing Unnecessary Field Visits
- B . High-Quality Home Network Deployment, Facilitating Fast Wi-Fi Service Rollout
- C . Accurate Insight, Identifying Potential Opportunities
- D . Automatic Service Deployment, Boosting Service Rollout
Correct Answer: A, B, C, D
A, B, C, D
Explanation:
The NCE-FAN Home Network solution is designed to enhance the management and performance of home networks in Fiber-to-the-Home (FTTH) deployments.
Its key highlights include:
Intelligent O&M for Home Networks: Uses AI-driven analytics to monitor and troubleshoot issues remotely, reducing the need for field visits.
High-Quality Home Network Deployment: Ensures optimal placement of Wi-Fi access points and ONTs for seamless coverage and fast service activation.
Accurate Insight: Provides detailed visibility into network performance and user behavior, helping service providers identify upsell opportunities.
Automatic Service Deployment: Automates the provisioning and configuration of services, accelerating time-to-market for new offerings.
These features improve customer satisfaction while reducing operational costs for service providers.
Reference: Huawei NCE-FAN Product Documentation
Huawei Home Network Solution Guide
A, B, C, D
Explanation:
The NCE-FAN Home Network solution is designed to enhance the management and performance of home networks in Fiber-to-the-Home (FTTH) deployments.
Its key highlights include:
Intelligent O&M for Home Networks: Uses AI-driven analytics to monitor and troubleshoot issues remotely, reducing the need for field visits.
High-Quality Home Network Deployment: Ensures optimal placement of Wi-Fi access points and ONTs for seamless coverage and fast service activation.
Accurate Insight: Provides detailed visibility into network performance and user behavior, helping service providers identify upsell opportunities.
Automatic Service Deployment: Automates the provisioning and configuration of services, accelerating time-to-market for new offerings.
These features improve customer satisfaction while reducing operational costs for service providers.
Reference: Huawei NCE-FAN Product Documentation
Huawei Home Network Solution Guide
Question #88
eSight is the NMS in Huawei Campus OptiX solution.
- A . True
- B . False
Correct Answer: A
A
Explanation:
eSightis Huawei’s flagship Network Management System (NMS) and plays a critical role in theCampus OptiX solution. It provides centralized management, monitoring, and operation of the entire POL network, including OLTs, ONTs, and the ODN infrastructure. Key features of eSight include:
Real-time monitoring of network performance and faults.
Automated service provisioning and configuration.
Comprehensive reporting and analytics for network optimization.
Without eSight, managing a large-scale POL deployment would be significantly more challenging, making it an essential component of the solution.
Reference: Huawei eSight Product Documentation
Campus OptiX Solution Guide
A
Explanation:
eSightis Huawei’s flagship Network Management System (NMS) and plays a critical role in theCampus OptiX solution. It provides centralized management, monitoring, and operation of the entire POL network, including OLTs, ONTs, and the ODN infrastructure. Key features of eSight include:
Real-time monitoring of network performance and faults.
Automated service provisioning and configuration.
Comprehensive reporting and analytics for network optimization.
Without eSight, managing a large-scale POL deployment would be significantly more challenging, making it an essential component of the solution.
Reference: Huawei eSight Product Documentation
Campus OptiX Solution Guide
Question #89
Huawei, NOKIA, ZTE, FiberHome, and Cisco are the main vendors of OLT.
- A . True
- B . False
Correct Answer: B
B
Explanation:
The statement is False. While Huawei, NOKIA, ZTE, and Fiber Home are indeed major vendors of Optical Line Terminals (OLTs), Cisco is not traditionally known as a primary OLT vendor. Cisco focuses more on enterprise networking solutions like routers, switches, and Wi-Fi systems rather than passive optical network (PON) equipment.
The leading OLT vendors in the market are:
Huawei: Dominates the global OLT market with advanced GPON, XG(S) -PON, and Combo PON solutions.
NOKIA: Offers robust PON solutions through its Alcatel-Lucent subsidiary. ZTE: Provides cost-effective PON solutions for both carriers and enterprises. FiberHome: Specializes in PON and fiber optic technologies.
Reference: Dell’Oro Group Market Reports on OLT Vendors
Huawei, NOKIA, ZTE, and FiberHome Product Portfolios
B
Explanation:
The statement is False. While Huawei, NOKIA, ZTE, and Fiber Home are indeed major vendors of Optical Line Terminals (OLTs), Cisco is not traditionally known as a primary OLT vendor. Cisco focuses more on enterprise networking solutions like routers, switches, and Wi-Fi systems rather than passive optical network (PON) equipment.
The leading OLT vendors in the market are:
Huawei: Dominates the global OLT market with advanced GPON, XG(S) -PON, and Combo PON solutions.
NOKIA: Offers robust PON solutions through its Alcatel-Lucent subsidiary. ZTE: Provides cost-effective PON solutions for both carriers and enterprises. FiberHome: Specializes in PON and fiber optic technologies.
Reference: Dell’Oro Group Market Reports on OLT Vendors
Huawei, NOKIA, ZTE, and FiberHome Product Portfolios
Question #90
The MS-OTN can’t support OTN, SDH, and PKT.
- A . True
- B . False
Correct Answer: B
B
Explanation:
TheMS-OTN (Multi-Service Optical Transport Network) is specifically designed to support multiple types of services and protocols, including:
OTN (Optical Transport Network): Provides high-capacity transport for long-haul andmetro networks.
SDH (Synchronous Digital Hierarchy): Supports legacy TDM-based services.
PKT (Packet): Enables packet-based services such as Ethernet and IP/MPLS.
MS-OTN integrates these technologies into a single platform, allowing service providers to converge multiple services onto a unified infrastructure. This flexibility makes MS-OTN ideal for modernizing existing networks while supporting future growth.
The statement that MS-OTN "can’t support OTN, SDH, and PKT" is therefore incorrect.
Reference: ITU-T G.709 Standard – OTN Specifications
Huawei MS-OTN Solution Guide
B
Explanation:
TheMS-OTN (Multi-Service Optical Transport Network) is specifically designed to support multiple types of services and protocols, including:
OTN (Optical Transport Network): Provides high-capacity transport for long-haul andmetro networks.
SDH (Synchronous Digital Hierarchy): Supports legacy TDM-based services.
PKT (Packet): Enables packet-based services such as Ethernet and IP/MPLS.
MS-OTN integrates these technologies into a single platform, allowing service providers to converge multiple services onto a unified infrastructure. This flexibility makes MS-OTN ideal for modernizing existing networks while supporting future growth.
The statement that MS-OTN "can’t support OTN, SDH, and PKT" is therefore incorrect.
Reference: ITU-T G.709 Standard – OTN Specifications
Huawei MS-OTN Solution Guide