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 #11
OptiXtrans products include: E9600, OSN 1800, 1X908, and E5800.
- A . True
- B . False
Correct Answer: B
B
Explanation:
The statement is False. While the OptiXtrans E9600andOSN 1800are part of Huawei’s optical transmission portfolio, the1X908andE5800are not included under the OptiXtrans product line.
Here’s a clarification:
OptiXtrans E9600: A series of optical transmission devices designed for backbone, metro, and access networks.
OSN 1800: A compact optical transport platform for enterprise and carrier-grade applications.
1X908: This is not a recognized product in Huawei’s optical transmission portfolio.
E5800: Refers to a different product line, typically associated with access networks rather than optical transmission.
The confusion may arise from overlapping product names, but the OptiXtrans series specifically focuses on optical transmission solutions.
Reference: Huawei OptiXtrans Product Portfolio
Huawei OSN 1800 Product Documentation
B
Explanation:
The statement is False. While the OptiXtrans E9600andOSN 1800are part of Huawei’s optical transmission portfolio, the1X908andE5800are not included under the OptiXtrans product line.
Here’s a clarification:
OptiXtrans E9600: A series of optical transmission devices designed for backbone, metro, and access networks.
OSN 1800: A compact optical transport platform for enterprise and carrier-grade applications.
1X908: This is not a recognized product in Huawei’s optical transmission portfolio.
E5800: Refers to a different product line, typically associated with access networks rather than optical transmission.
The confusion may arise from overlapping product names, but the OptiXtrans series specifically focuses on optical transmission solutions.
Reference: Huawei OptiXtrans Product Portfolio
Huawei OSN 1800 Product Documentation
Question #12
Flex-PON board can support GPON/XG(S) -PON/Combo PON, 3-in-1.
- A . True
- B . False
Correct Answer: A
A
Explanation:
The statement is True. TheFlex-PON boardis a versatile solution designed to support multiple PON technologies, including:
GPON (Gigabit Passive Optical Network): Suitable for residential and small business applications.
XG(S) -PON (10G Symmetric/Asymmetric PON): Provides higher bandwidth for demanding applications like enterprise services and 5G backhaul.
Combo PON: Combines GPON and XG(S) -PON on the same port, allowing for seamless upgrades from GPON to XG(S) -PON without replacing hardware.
This flexibility makes Flex-PON boards ideal for operators looking to future-proof their networks while supporting legacy GPON services.
Reference: Huawei Flex-PON Technology White Paper
ITU-T G.984.x and G.988 Standards for PON
A
Explanation:
The statement is True. TheFlex-PON boardis a versatile solution designed to support multiple PON technologies, including:
GPON (Gigabit Passive Optical Network): Suitable for residential and small business applications.
XG(S) -PON (10G Symmetric/Asymmetric PON): Provides higher bandwidth for demanding applications like enterprise services and 5G backhaul.
Combo PON: Combines GPON and XG(S) -PON on the same port, allowing for seamless upgrades from GPON to XG(S) -PON without replacing hardware.
This flexibility makes Flex-PON boards ideal for operators looking to future-proof their networks while supporting legacy GPON services.
Reference: Huawei Flex-PON Technology White Paper
ITU-T G.984.x and G.988 Standards for PON
Question #13
Huawei has kept the world’s No. 1 market share for more than 10 years in the field of optical transmission & access networks.
- A . True
- B . False
Correct Answer: A
A
Explanation:
Huawei has consistently maintained theNo. 1 global market sharein the field ofoptical transmission and access networksfor over a decade. This leadership position is attributed to several factors:
Innovation Leadership: Huawei invests heavily in R&D, driving advancements in technologies like OTN, WDM, PON, and MS-OTN.
Comprehensive Portfolio: Its product portfolio spans from core backbone networks to metro, access, and data center interconnect solutions.
Global Presence: Huawei serves customers across industries and regions, including telecom operators, enterprises, and governments.
Industry Recognition: Reports from firms like Dell’Oro Group and Omdia consistently rank Huawei as the top vendor in optical networking.
This sustained dominance underscores Huawei’s ability to deliver cutting-edge solutions that meet evolving customer needs.
Reference: Dell’Oro Group Optical Transport Market Report
Huawei Annual Innovation Report
A
Explanation:
Huawei has consistently maintained theNo. 1 global market sharein the field ofoptical transmission and access networksfor over a decade. This leadership position is attributed to several factors:
Innovation Leadership: Huawei invests heavily in R&D, driving advancements in technologies like OTN, WDM, PON, and MS-OTN.
Comprehensive Portfolio: Its product portfolio spans from core backbone networks to metro, access, and data center interconnect solutions.
Global Presence: Huawei serves customers across industries and regions, including telecom operators, enterprises, and governments.
Industry Recognition: Reports from firms like Dell’Oro Group and Omdia consistently rank Huawei as the top vendor in optical networking.
This sustained dominance underscores Huawei’s ability to deliver cutting-edge solutions that meet evolving customer needs.
Reference: Dell’Oro Group Optical Transport Market Report
Huawei Annual Innovation Report
Question #14
What types of sites do WDM systems have?
- A . OLA
- B . OTM
- C . REG
- D . OADM
Correct Answer: A, B, C, D
A, B, C, D
Explanation:
Wavelength Division Multiplexing (WDM) systems use different types of sites to manage signal transmission and amplification across long distances.
These include:
OLA (Optical Line Amplifier): Amplifies optical signals to compensate for losses over long distances. OTM (Optical Terminal Multiplexer): Located at the endpoints of the WDM system, it multiplexes and demultiplexes wavelengths.
REG (Regenerator): Regenerates optical signals to restore their quality after significant attenuation.
OADM (Optical Add-Drop Multiplexer): Adds or drops specific wavelengths at intermediate points without affecting others.
Each type of site plays a critical role in ensuring efficient and reliable operation of WDM networks.
Reference: ITU-T G.694 Standard – WDM Architecture
Huawei WDM Solution Guide
A, B, C, D
Explanation:
Wavelength Division Multiplexing (WDM) systems use different types of sites to manage signal transmission and amplification across long distances.
These include:
OLA (Optical Line Amplifier): Amplifies optical signals to compensate for losses over long distances. OTM (Optical Terminal Multiplexer): Located at the endpoints of the WDM system, it multiplexes and demultiplexes wavelengths.
REG (Regenerator): Regenerates optical signals to restore their quality after significant attenuation.
OADM (Optical Add-Drop Multiplexer): Adds or drops specific wavelengths at intermediate points without affecting others.
Each type of site plays a critical role in ensuring efficient and reliable operation of WDM networks.
Reference: ITU-T G.694 Standard – WDM Architecture
Huawei WDM Solution Guide
Question #15
Which of the following statements about MS-OTN are correct?
- A . OSN 1800V, 1800 II, and 1800 I all can support MS-OTN.
- B . MS-OTN supports ODUk cross-connections.
- C . MS-OTN supports SDH, PKT, and OTN services.
- D . MS-OTN is short for Multi-Service Optical Transport Network.
Correct Answer: B, C, D
B, C, D
Explanation:
TheMS-OTN (Multi-Service Optical Transport Network) is a versatile technology designed to support multiple types of services and protocols. Here’s an analysis of each statement:
Statement A: Not all models in the OSN 1800 series (e.g., OSN 1800 I) fully support MS-OTN. Only higher-end models like the OSN 1800V and OSN 1800 II provide comprehensive MS-OTN capabilities.
Statement B: MS-OTN supports ODUk (Optical Channel Data Unit) cross-connections, enabling efficient grooming and transport of traffic at various granularities.
Statement C: MS-OTN integrates SDH, PKT (Packet), and OTN services into a single platform, making it ideal for converged networks.
Statement D: MS-OTN stands for Multi-Service Optical Transport Network, highlighting its ability to handle diverse traffic types.
Thus, statements B, C, and D are correct.
Reference: ITU-T G.709 Standard – OTN Specifications
Huawei MS-OTN Solution Guide
B, C, D
Explanation:
TheMS-OTN (Multi-Service Optical Transport Network) is a versatile technology designed to support multiple types of services and protocols. Here’s an analysis of each statement:
Statement A: Not all models in the OSN 1800 series (e.g., OSN 1800 I) fully support MS-OTN. Only higher-end models like the OSN 1800V and OSN 1800 II provide comprehensive MS-OTN capabilities.
Statement B: MS-OTN supports ODUk (Optical Channel Data Unit) cross-connections, enabling efficient grooming and transport of traffic at various granularities.
Statement C: MS-OTN integrates SDH, PKT (Packet), and OTN services into a single platform, making it ideal for converged networks.
Statement D: MS-OTN stands for Multi-Service Optical Transport Network, highlighting its ability to handle diverse traffic types.
Thus, statements B, C, and D are correct.
Reference: ITU-T G.709 Standard – OTN Specifications
Huawei MS-OTN Solution Guide
Question #16
Which of the following devices cannot be mounted in a 19-inch cabinet?
- A . OSN 1800 I
- B . OSN 9800 U32
- C . OSN 1800 II
- D . OSN 1800 V
Correct Answer: D
D
Explanation:
The OSN 1800 Vis a compact device designed for outdoor and edge deployments. Unlike other models in the OSN 1800 series, it cannot be mounted in a standard 19-inch cabinet due to its unique form factor and intended use case.
Here’s an analysis of the other options:
OSN 1800 I: Can be mounted in a 19-inch cabinet and is commonly used in small-scale deployments.
OSN 9800 U32: A high-end platform designed for core networks, typically deployed in data centers or telecom rooms with 19-inch racks.
OSN 1800 II: Supports 19-inch cabinet mounting and is used in metro and regional networks.
Thus, the OSN 1800 Vis the correct answer.
Reference: Huawei OSN 1800 Series Product Documentation
Huawei Cabinet Mounting Guidelines
D
Explanation:
The OSN 1800 Vis a compact device designed for outdoor and edge deployments. Unlike other models in the OSN 1800 series, it cannot be mounted in a standard 19-inch cabinet due to its unique form factor and intended use case.
Here’s an analysis of the other options:
OSN 1800 I: Can be mounted in a 19-inch cabinet and is commonly used in small-scale deployments.
OSN 9800 U32: A high-end platform designed for core networks, typically deployed in data centers or telecom rooms with 19-inch racks.
OSN 1800 II: Supports 19-inch cabinet mounting and is used in metro and regional networks.
Thus, the OSN 1800 Vis the correct answer.
Reference: Huawei OSN 1800 Series Product Documentation
Huawei Cabinet Mounting Guidelines
Question #17
POL can be sold independently in all office scenarios.
- A . True
- B . False
Correct Answer: B
B
Explanation:
POL (Passive Optical LAN) is a solution designed for enterprise campus environments, leveraging
PON technology to provide converged voice, data, and video services. While POL is highly versatile and can be deployed in various scenarios such as education, healthcare, hospitality, and office environments, itcannot always be sold independentlyin all office scenarios.
The deployment of POL depends on factors such as the existing infrastructure, customer requirements, and the scale of the network. In some cases, additional components like Wi-Fi access points, routers, or switches may be required to complement the POL solution. Therefore, POL is typically sold as part of an integrated solution tailored to the customer’s specific needs.
Reference: Huawei Campus OptiX Solution Guide
POL Deployment Best Practices
B
Explanation:
POL (Passive Optical LAN) is a solution designed for enterprise campus environments, leveraging
PON technology to provide converged voice, data, and video services. While POL is highly versatile and can be deployed in various scenarios such as education, healthcare, hospitality, and office environments, itcannot always be sold independentlyin all office scenarios.
The deployment of POL depends on factors such as the existing infrastructure, customer requirements, and the scale of the network. In some cases, additional components like Wi-Fi access points, routers, or switches may be required to complement the POL solution. Therefore, POL is typically sold as part of an integrated solution tailored to the customer’s specific needs.
Reference: Huawei Campus OptiX Solution Guide
POL Deployment Best Practices
Question #18
Which of the following boards can support 400G/A?
- A . N220
- B . N502
- C . N602
- D . N402
Correct Answer: D
D
Explanation:
The correct answer isN402. TheN402 board is specifically designed to support400G per wavelength transmission, making it ideal for high-capacity optical networks.
Key features of the N402 board include:
High-Speed Transmission: Supports data rates up to 400G per wavelength, enabling efficient traffic aggregation in backbone and core networks.
Advanced Modulation: Uses modulation schemes like DP-16QAM (Dual Polarization 16 Quadrature Amplitude Modulation) to achieve high spectral efficiency.
Flexibility: Compatible with various network architectures, including OTN, WDM, and SDH.
Scalability: Can be integrated into existing networks to boost capacity without requiring a complete overhaul.
Other options:
N220: Typically supports lower data rates (e.g., 100G).
N502: Designed for mid-range applications, not 400G.
N602: Focuses on access networks rather than high-speed backbone transmission.
Reference: Huawei N402 Board Specifications
ITU-T G.709 Standards for OTN
D
Explanation:
The correct answer isN402. TheN402 board is specifically designed to support400G per wavelength transmission, making it ideal for high-capacity optical networks.
Key features of the N402 board include:
High-Speed Transmission: Supports data rates up to 400G per wavelength, enabling efficient traffic aggregation in backbone and core networks.
Advanced Modulation: Uses modulation schemes like DP-16QAM (Dual Polarization 16 Quadrature Amplitude Modulation) to achieve high spectral efficiency.
Flexibility: Compatible with various network architectures, including OTN, WDM, and SDH.
Scalability: Can be integrated into existing networks to boost capacity without requiring a complete overhaul.
Other options:
N220: Typically supports lower data rates (e.g., 100G).
N502: Designed for mid-range applications, not 400G.
N602: Focuses on access networks rather than high-speed backbone transmission.
Reference: Huawei N402 Board Specifications
ITU-T G.709 Standards for OTN
Question #19
Which of the following services can FTTH Solution provide?
- A . Home-WiFi
- B . IPTV
- C . High-Speed Internet
- D . Telephone
Correct Answer: A, B, C, D
A, B, C, D
Explanation:
The correct answer includes all options: Home-WiFi, IPTV, High-Speed Internet, and Telephone. FTTH (Fiber-to-the-Home) solutions are designed to deliver a wide range of services over a single fiber connection, leveraging the high bandwidth and low latency of optical networks.
Home-WiFi: Provides wireless internet access within the home using Wi-Fi routers connected to the ONU.
IPTV: Delivers high-quality video streaming services, including live TV, Video on Demand (VoD), and interactive features.
High-Speed Internet: Offers broadband connectivity for web browsing, online gaming, and other data-intensive applications.
Telephone: Supports Voice over IP (VoIP) services, enabling voice communication over the fiber network.
FTTH is a converged solution that integrates these services into a unified platform, simplifying network management and enhancing user experience.
Reference: Huawei FTTH Solution White Paper
ITU-T G.984.x Standards for GPON
A, B, C, D
Explanation:
The correct answer includes all options: Home-WiFi, IPTV, High-Speed Internet, and Telephone. FTTH (Fiber-to-the-Home) solutions are designed to deliver a wide range of services over a single fiber connection, leveraging the high bandwidth and low latency of optical networks.
Home-WiFi: Provides wireless internet access within the home using Wi-Fi routers connected to the ONU.
IPTV: Delivers high-quality video streaming services, including live TV, Video on Demand (VoD), and interactive features.
High-Speed Internet: Offers broadband connectivity for web browsing, online gaming, and other data-intensive applications.
Telephone: Supports Voice over IP (VoIP) services, enabling voice communication over the fiber network.
FTTH is a converged solution that integrates these services into a unified platform, simplifying network management and enhancing user experience.
Reference: Huawei FTTH Solution White Paper
ITU-T G.984.x Standards for GPON
Question #20
OptiXtrans DC908 product is usually used in backbone long-distance networks.
- A . True
- B . False
Correct Answer: A
A
Explanation:
The statement isTrue. The OptiXtrans DC908is primarily designed for backbone long-distance networks, where high capacity, low latency, and reliability are critical.
Here’s why the DC908 is well-suited for backbone networks:
High Capacity: The DC908 supports up to38.4 Tbps per fiber pair, making it ideal for transporting massive volumes of data over long distances.
Long-Distance Transmission: Leveraging advanced technologies like EDFA (Erbium-Doped Fiber Amplifier) and Raman amplification, the DC908 can transmit data over distances exceeding1, 000 kmwithout regeneration.
Low Latency: Designed for ultra-low latency, the DC908 ensures minimal delay for mission-critical applications like cloud computing, AI, and big data analytics.
Reliability: Features likeoptical protection switchingandhard pipe isolation ensure uninterrupted service even in the event of failures.
While the DC908 can also be used for shorter distances (e.g., metro or regional networks), its primary application is inlong-haul backbone networks that connect major cities, data centers, and international gateways.
Reference: Huawei OptiXtrans DC908 Product Documentation
ITU-T G.698 Standards for WDM
A
Explanation:
The statement isTrue. The OptiXtrans DC908is primarily designed for backbone long-distance networks, where high capacity, low latency, and reliability are critical.
Here’s why the DC908 is well-suited for backbone networks:
High Capacity: The DC908 supports up to38.4 Tbps per fiber pair, making it ideal for transporting massive volumes of data over long distances.
Long-Distance Transmission: Leveraging advanced technologies like EDFA (Erbium-Doped Fiber Amplifier) and Raman amplification, the DC908 can transmit data over distances exceeding1, 000 kmwithout regeneration.
Low Latency: Designed for ultra-low latency, the DC908 ensures minimal delay for mission-critical applications like cloud computing, AI, and big data analytics.
Reliability: Features likeoptical protection switchingandhard pipe isolation ensure uninterrupted service even in the event of failures.
While the DC908 can also be used for shorter distances (e.g., metro or regional networks), its primary application is inlong-haul backbone networks that connect major cities, data centers, and international gateways.
Reference: Huawei OptiXtrans DC908 Product Documentation
ITU-T G.698 Standards for WDM