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 #41
What is the minimum number of chassis to deploy an 8x200G (2x100GE) WDM system with DC908?
- A . 4
- B . 2
- C . 1
- D . 3
Correct Answer: C
C
Explanation:
TheOptiXtrans DC908is a highly compact and efficient data center interconnect (DCI) solution. To deploy an8x200G (2x100GE) WDM system, only1 chassisis required.
Key reasons:
High Integration: The DC908 supports up to 800G per wavelength and integrates multiple functions into a single 2U chassis.
Scalability: A single chassis can handle the specified capacity (8x200G or 2x100GE) without requiring additional hardware.
Plug-and-Play Design: Simplifies deployment and reduces the need for multiple chassis.
Using more than one chassis would be unnecessary for this configuration, making1 chassisthe correct answer.
Reference: Huawei OptiXtrans DC908 Deployment Guide
Huawei DCI Solution Best Practices
C
Explanation:
TheOptiXtrans DC908is a highly compact and efficient data center interconnect (DCI) solution. To deploy an8x200G (2x100GE) WDM system, only1 chassisis required.
Key reasons:
High Integration: The DC908 supports up to 800G per wavelength and integrates multiple functions into a single 2U chassis.
Scalability: A single chassis can handle the specified capacity (8x200G or 2x100GE) without requiring additional hardware.
Plug-and-Play Design: Simplifies deployment and reduces the need for multiple chassis.
Using more than one chassis would be unnecessary for this configuration, making1 chassisthe correct answer.
Reference: Huawei OptiXtrans DC908 Deployment Guide
Huawei DCI Solution Best Practices
Question #42
Which board on OptiXtrans DC908 can support 400G/A?
- A . MS04
- B . MD02
- C . N602
- D . MD02A
Correct Answer: D
D
Explanation:
The OptiXtrans DC908supports high-speed interfaces through its advanced line cards. Among these, theMD02Aboard is specifically designed to support400G per wavelength transmission.
Here’s an analysis of the options:
MS04: Supports lower-rate services and is not optimized for 400G.
MD02: An earlier version of the MD02A, but it does not support 400G.
N602: A network processing unit, not directly related to high-speed optical transmission.
MD02A: The latest board in the DC908 portfolio, supporting 400G wavelengths for ultra-high-capacity DCI applications.
Thus, the correct answer is D.
Reference: Huawei OptiXtrans DC908 Product Datasheet
Huawei High-Speed Optical Transmission Guide
D
Explanation:
The OptiXtrans DC908supports high-speed interfaces through its advanced line cards. Among these, theMD02Aboard is specifically designed to support400G per wavelength transmission.
Here’s an analysis of the options:
MS04: Supports lower-rate services and is not optimized for 400G.
MD02: An earlier version of the MD02A, but it does not support 400G.
N602: A network processing unit, not directly related to high-speed optical transmission.
MD02A: The latest board in the DC908 portfolio, supporting 400G wavelengths for ultra-high-capacity DCI applications.
Thus, the correct answer is D.
Reference: Huawei OptiXtrans DC908 Product Datasheet
Huawei High-Speed Optical Transmission Guide
Question #43
Which of the following products are recommended for Campus OptiX (POL) safe city scene?
- A . Indoor monitoring ONT, such as P612E, EA5821
- B . Pre-connection ODN
- C . Outdoor monitoring ONT, such as EG8084P, PowerCube500
- D . Small and medium OLT, such as EA5801, EA5800-X2
Correct Answer: C
C
Explanation:
In asafe city scenario, outdoor monitoring is a critical requirement. Huawei recommends usingoutdoor monitoring ONTslike theEG8084PandPowerCube500for such deployments. These devices are ruggedized and designed to operate in harsh environmental conditions, making them ideal for outdoor surveillance applications.
While indoor monitoring ONTs and pre-connection ODN are useful in other scenarios, they are not specifically optimized for outdoor safe city deployments. Similarly, small and medium OLTs like the EA5801 and EA5800-X2 are suitable for smaller-scale networks but are not directly related to the safe city use case.
Reference: Huawei Safe City Solution Guide
Campus OptiX (POL) Deployment Scenarios
C
Explanation:
In asafe city scenario, outdoor monitoring is a critical requirement. Huawei recommends usingoutdoor monitoring ONTslike theEG8084PandPowerCube500for such deployments. These devices are ruggedized and designed to operate in harsh environmental conditions, making them ideal for outdoor surveillance applications.
While indoor monitoring ONTs and pre-connection ODN are useful in other scenarios, they are not specifically optimized for outdoor safe city deployments. Similarly, small and medium OLTs like the EA5801 and EA5800-X2 are suitable for smaller-scale networks but are not directly related to the safe city use case.
Reference: Huawei Safe City Solution Guide
Campus OptiX (POL) Deployment Scenarios
Question #44
The EMR8 is 5U wide, which takes 2 slots.
- A . True
- B . False
Correct Answer: B
B
Explanation:
The statement is False. TheEMR8board is not 5U wide and does not occupy2 slots. Instead, the EMR8 is a compact board designed to fit into a single slot within the chassis.
Here’s a breakdown of the EMR8 board:
Form Factor: The EMR8 is a single-slot board, making it highly space-efficient.
Functionality: It provides advanced multiplexing and routing capabilities for optical networks, supporting services like OTN, SDH, and Ethernet.
Chassis Compatibility: Designed to work seamlessly with Huawei’s optical transport platforms, such as the OSN series.
The confusion may arise from other boards or components that require multiple slots, but the EMR8 itself is a single-slot device.
Reference: Huawei EMR8 Board Specifications
Huawei OSN Series Product Documentation
B
Explanation:
The statement is False. TheEMR8board is not 5U wide and does not occupy2 slots. Instead, the EMR8 is a compact board designed to fit into a single slot within the chassis.
Here’s a breakdown of the EMR8 board:
Form Factor: The EMR8 is a single-slot board, making it highly space-efficient.
Functionality: It provides advanced multiplexing and routing capabilities for optical networks, supporting services like OTN, SDH, and Ethernet.
Chassis Compatibility: Designed to work seamlessly with Huawei’s optical transport platforms, such as the OSN series.
The confusion may arise from other boards or components that require multiple slots, but the EMR8 itself is a single-slot device.
Reference: Huawei EMR8 Board Specifications
Huawei OSN Series Product Documentation
Question #45
Which of the following is NOT an enterprise production network’s requirement on optical transmission?
- A . More intelligent
- B . More complex
- C . Simpler
- D . More secure
Correct Answer: B
B
Explanation:
The correct answer is More complex. Enterprise production networks prioritize simplicity,
intelligence, and security in optical transmission, rather than unnecessary complexity.
Here’s an analysis of each option:
B
Explanation:
The correct answer is More complex. Enterprise production networks prioritize simplicity,
intelligence, and security in optical transmission, rather than unnecessary complexity.
Here’s an analysis of each option:
Question #46
Which of the following are the main sale products in Campus OptiX solution?
- A . OLT + ODN + ONU + U2000
- B . OLT + ODN + ONU + eSight
- C . OLT + ONT
- D . OLT + ODN + ONU
Correct Answer: B
B
Explanation:
The correct answer isOLT + ODN + ONU + eSight. The Campus OptiX (POL) solution includes the following key components:
OLT (Optical Line Terminal): Centralized device at the service provider’s end for managing and controlling the network.
ODN (Optical Distribution Network): Passive optical splitters and fiber cables that distribute signals to end users.
ONU (Optical Network Unit): End-user devices that connect to the ODN and provide services like data, voice, and video.
eSight: Huawei’s network management system that provides centralized monitoring, configuration, and maintenance for the entire POL network.
WhileU2000is another Huawei network management tool, it is more commonly used for carrier-grade networks rather than enterprise-focused solutions like Campus OptiX.
Reference: Huawei Campus OptiX (POL) Solution White Paper
Huawei eSight Product Documentation
B
Explanation:
The correct answer isOLT + ODN + ONU + eSight. The Campus OptiX (POL) solution includes the following key components:
OLT (Optical Line Terminal): Centralized device at the service provider’s end for managing and controlling the network.
ODN (Optical Distribution Network): Passive optical splitters and fiber cables that distribute signals to end users.
ONU (Optical Network Unit): End-user devices that connect to the ODN and provide services like data, voice, and video.
eSight: Huawei’s network management system that provides centralized monitoring, configuration, and maintenance for the entire POL network.
WhileU2000is another Huawei network management tool, it is more commonly used for carrier-grade networks rather than enterprise-focused solutions like Campus OptiX.
Reference: Huawei Campus OptiX (POL) Solution White Paper
Huawei eSight Product Documentation
Question #47
Which of the following units can amplify optical signals?
- A . MUX/DEMUX
- B . OUT
- C . FIU
- D . OSC
- E . OA
Correct Answer: E
E
Explanation:
The correct answer is OA (Optical Amplifier). Optical amplifiers are specifically designed to amplify optical signals without converting them into electrical signals, making them a critical component in long-distance optical networks.
Here’s a breakdown of the options:
MUX/DEMUX (Multiplexer/Demultiplexer): These devices combine or split multiple wavelengths in WDM (Wavelength Division Multiplexing) systems but do not amplify signals.
OUT (Optical Transponder Unit): Converts optical signals from one wavelength to another but does not amplify them.
FIU (Fiber Interface Unit): Provides physical connections for fiber cables but does not amplify signals.
OSC (Optical Supervisory Channel): Used for transmitting management and monitoring information over the optical network but does not amplify signals.
OA (Optical Amplifier): Amplifies optical signals directly, extending the reach of the network without the need for electrical regeneration. Common types include EDFA (Erbium-Doped Fiber Amplifier) and Raman amplifiers.
Optical amplifiers are essential for overcoming signal attenuation in long-haul and metro networks, ensuring that data can be transmitted over hundreds of kilometers without degradation.
Reference: ITU-T G.652 Standards for Optical Fibers
Huawei Optical Amplifier Technology White Paper
E
Explanation:
The correct answer is OA (Optical Amplifier). Optical amplifiers are specifically designed to amplify optical signals without converting them into electrical signals, making them a critical component in long-distance optical networks.
Here’s a breakdown of the options:
MUX/DEMUX (Multiplexer/Demultiplexer): These devices combine or split multiple wavelengths in WDM (Wavelength Division Multiplexing) systems but do not amplify signals.
OUT (Optical Transponder Unit): Converts optical signals from one wavelength to another but does not amplify them.
FIU (Fiber Interface Unit): Provides physical connections for fiber cables but does not amplify signals.
OSC (Optical Supervisory Channel): Used for transmitting management and monitoring information over the optical network but does not amplify signals.
OA (Optical Amplifier): Amplifies optical signals directly, extending the reach of the network without the need for electrical regeneration. Common types include EDFA (Erbium-Doped Fiber Amplifier) and Raman amplifiers.
Optical amplifiers are essential for overcoming signal attenuation in long-haul and metro networks, ensuring that data can be transmitted over hundreds of kilometers without degradation.
Reference: ITU-T G.652 Standards for Optical Fibers
Huawei Optical Amplifier Technology White Paper
Question #48
E2E OTN Hard Pipes Provide High-Quality Services (High Availability, Low Latency, Zero Packet Loss).
- A . True
- B . False
Correct Answer: A
A
Explanation:
The statement isTrue.End-to-End (E2E) OTN Hard Pipes are designed to deliver high-quality services with key attributes such as high availability, low latency, and zero packet loss.
Here’s why E2E OTN Hard Pipes are critical for modern networks:
High Availability: OTN hard pipes provide dedicated bandwidth and redundancy mechanisms, ensuring uninterrupted service even during failures.
Low Latency: By using direct optical paths and minimizing processing delays, OTN hard pipes achieve ultra-low latency, which is essential for applications like financial trading and real-time control systems.
Zero Packet Loss: OTN hard pipes guarantee lossless transmission by isolating traffic and avoiding congestion, making them ideal for mission-critical applications.
These features make OTN hard pipes particularly valuable in industries like finance, healthcare, and utilities, where reliability and performance are paramount.
Reference: Huawei OTN Hard Pipe Technology White Paper
ITU-T G.709 Standards for OTN
A
Explanation:
The statement isTrue.End-to-End (E2E) OTN Hard Pipes are designed to deliver high-quality services with key attributes such as high availability, low latency, and zero packet loss.
Here’s why E2E OTN Hard Pipes are critical for modern networks:
High Availability: OTN hard pipes provide dedicated bandwidth and redundancy mechanisms, ensuring uninterrupted service even during failures.
Low Latency: By using direct optical paths and minimizing processing delays, OTN hard pipes achieve ultra-low latency, which is essential for applications like financial trading and real-time control systems.
Zero Packet Loss: OTN hard pipes guarantee lossless transmission by isolating traffic and avoiding congestion, making them ideal for mission-critical applications.
These features make OTN hard pipes particularly valuable in industries like finance, healthcare, and utilities, where reliability and performance are paramount.
Reference: Huawei OTN Hard Pipe Technology White Paper
ITU-T G.709 Standards for OTN
Question #49
Which PON does Flex-PON support?
- A . XGS-PON Combo
- B . XGS-PON
- C . GPON
- D . XG-PON Combo
- E . XG-PON
Correct Answer: A, B, C, E
A, B, C, E
Explanation:
The Flex-PON board supports multiple PON technologies, including:
GPON: Gigabit Passive Optical Network, widely used for residential and small business applications.
XG-PON: 10G Asymmetric Passive Optical Network, offering higher upstream and downstream bandwidths.
XGS-PON: 10G Symmetric Passive Optical Network, providing equal upstream and downstream speeds.
Combo PON: Combines GPON and XG(S) -PON on the same port, enabling seamless upgrades from GPON to XG(S) -PON without replacing hardware.
The only option not supported by Flex-PON is XG-PON Combo, as "Combo" typically refers to the integration of GPON and XG(S) -PON, not just XG-PON alone.
Reference: Huawei Flex-PON Technology White Paper
ITU-T G.984.x and G.988 Standards for PON
A, B, C, E
Explanation:
The Flex-PON board supports multiple PON technologies, including:
GPON: Gigabit Passive Optical Network, widely used for residential and small business applications.
XG-PON: 10G Asymmetric Passive Optical Network, offering higher upstream and downstream bandwidths.
XGS-PON: 10G Symmetric Passive Optical Network, providing equal upstream and downstream speeds.
Combo PON: Combines GPON and XG(S) -PON on the same port, enabling seamless upgrades from GPON to XG(S) -PON without replacing hardware.
The only option not supported by Flex-PON is XG-PON Combo, as "Combo" typically refers to the integration of GPON and XG(S) -PON, not just XG-PON alone.
Reference: Huawei Flex-PON Technology White Paper
ITU-T G.984.x and G.988 Standards for PON
Question #50
Which of the following statements about OSN 1800 V is incorrect?
- A . 700G OTN
- B . Support for rich interfaces
- C . Unavailable in a 19-inch cabinet
- D . Support for AC/DC with 1+1 backup
Correct Answer: C
C
Explanation:
The OSN 1800 Vis a compact and versatile optical transport platform designed for metro and access networks. Let’s analyze each statement:
Statement A: The OSN 1800 V supports700G OTN capacity, making it suitable for high-bandwidth applications.
Statement B: It providesrich interfaces, including Ethernet, SDH, and OTN, ensuring flexibility for diverse use cases.
Statement C: The OSN 1800 Vis available in a 19-inch cabinet, making it easy to deploy in data centers or telecom rooms. This statement is incorrect.
Statement D: It supports both AC and DC power inputswith1+1 redundancy, ensuring high reliability.
Thus, the incorrect statement is C.
Reference: Huawei OSN 1800 V Product Datasheet
Huawei Metro & Access WDM Solution Guide
C
Explanation:
The OSN 1800 Vis a compact and versatile optical transport platform designed for metro and access networks. Let’s analyze each statement:
Statement A: The OSN 1800 V supports700G OTN capacity, making it suitable for high-bandwidth applications.
Statement B: It providesrich interfaces, including Ethernet, SDH, and OTN, ensuring flexibility for diverse use cases.
Statement C: The OSN 1800 Vis available in a 19-inch cabinet, making it easy to deploy in data centers or telecom rooms. This statement is incorrect.
Statement D: It supports both AC and DC power inputswith1+1 redundancy, ensuring high reliability.
Thus, the incorrect statement is C.
Reference: Huawei OSN 1800 V Product Datasheet
Huawei Metro & Access WDM Solution Guide