Question 49

Which of the following are dynamic routing protocols? (Select All that Apply)

Correct Answer:ABCD
Dynamic Routing Protocols Overview:
Dynamic routing protocols enable routers to exchange routing information dynamically, allowing them to adapt to changes in the network topology automatically.
Explanation of Each Protocol:
OSPF (Open Shortest Path First):A link-state routing protocol that uses the Dijkstra algorithm to calculate the shortest path to destinations. It is widely used in enterprise networks.
IS-IS (Intermediate System to Intermediate System):Another link-state routing protocol, similar to OSPF, but primarily used in service provider networks.
RIP (Routing Information Protocol):A distance-vector routing protocol that uses hop count as its metric. It is simple but less scalable compared to OSPF and IS-IS.
BGP (Border Gateway Protocol):A path-vector routing protocol used for inter-domain routing (e.g., between autonomous systems). It is the backbone of the Internet. Conclusion:All four options (OSPF, IS-IS, RIP, and BGP) are dynamic routing protocols. References:
HCSA-Presales-IP Network V3.0 Training Material, Chapter 2: IP Routing Protocols. Huawei Enterprise Networking Product Documentation.

Question 50

Compared with non-Huawei switches that use subcards to expand uplink ports, Huawei S6730-H24X6CI and S6730-H48X6C support six 100GE uplink ports and have higher reliability, which is an advantage in project response.

Correct Answer:A
Comparison of Uplink Ports and Reliability:
Non-Huawei switches often rely on subcards to expand uplink ports, which can introduce complexity and potential points of failure.
Huawei S6730-H24X6CI and S6730-H48X6C switches come withbuilt-in six 100GE uplink ports, eliminating the need for additional subcards. This design simplifies deployment and enhances reliability.
Advantages in Project Response:
Built-in uplink ports reduce configuration time and improve operational efficiency. Higher reliability ensures consistent performance, which is crucial for mission-critical applications.
Conclusion:The statement is TRUE because the S6730-H series switches offer built-in 100GE uplink ports and superior reliability compared to non-Huawei switches. References:
HCSA-Presales-IP Network V3.0 Training Material, Chapter 6: Switch Product Portfolio. Huawei Campus Switch Product Documentation.

Question 51

What are the basic roles of devices in the typical MPLS VPN technical architecture? (Select All that Apply)

Correct Answer:ACE
MPLS VPN Architecture Overview:
MPLS (Multiprotocol Label Switching) VPN is a widely used technology for creating virtual private networks over a shared infrastructure. It involves specific roles for devices in the network.
Explanation of Each Role:
PE (Provider Edge):These devices sit at the edge of the service provider's network and connect to customer sites. They are responsible for assigning labels and managing VPN routes.
P (Provider):These devices are located in the core of the service provider's network.They perform label switching but do not participate in VPN-specific functions.
CE (Customer Edge):These devices belong to the customer and connect to the PE devices. They are unaware of the MPLS network and simply forward traffic to the PE. Aggregation and Core:These terms are not specific to MPLS VPN architecture. "Aggregation" refers to a general networking concept, and "Core" is too broad to describe a specific role in MPLS VPNs.
Conclusion:The correct roles in MPLS VPN architecture are PE, P, and CE. References:
HCSA-Presales-IP Network V3.0 Training Material, Chapter 7: MPLS and VPN Technologies.
Huawei MPLS Solution Guide.

Question 52

Redundancy is the guarantee of stable network operation and is one of the important factors to consider when selecting an aggregation switch. How many power modules does one Huawei CloudEngine S8700-10 have?

Correct Answer:A
The Huawei CloudEngine S8700-10 is a high-performance aggregation switch designed for enterprise campus networks. It supports up to 4 power modules , which provide redundancy and ensure stable operation even in the event of a power module failure. Redundant power supplies are critical for maintaining network uptime and reliability, especially in mission-critical environments.
The other options (2, 6, and 8) do not match the specifications of the S8700-10. While some models in the S8700 series may support fewer or additional power modules, the S8700-10 specifically accommodates up to 4 power modules.
References:
Huawei CloudEngine S8700 Series Switch Hardware Guide, HCSA-Presales-IP Network Documentation.

Question 53

Which of the following Wi-Fi 6 AP models supports three radios?

Correct Answer:B
Understanding Wi-Fi 6 AP Radios:
Wi-Fi 6 APs typically have two or three radios. Three-radio APs provide additional capacity and performance, making them ideal for high-density environments.
Analysis of Each Model:
AirEngine 5762-12:This model supportstwo radios(2.4 GHz and 5 GHz).
AirEngine 6761-21T:This model supportsthree radios, including an additional IoT radio for Internet of Things (IoT) applications.
AirEngine 5761-21:This model supportstwo radios. AirEngine 5761-11:This model supportstwo radios.
Conclusion:The correct answer is Option B, as the AirEngine 6761-21T supports three radios.
References:
HCSA-Presales-IP Network V3.0 Training Material, Chapter 8: WLAN Solutions. Huawei AirEngine Product Documentation.

Question 54

In Huawei??s SD-WAN solution, to reduce the impact of packet loss on user services, you are advised to enable Forward Error Correction (FEC) for all traffic.

Correct Answer:B
WhileForward Error Correction (FEC)is a valuable feature in Huawei's SD-WAN solution for mitigating packet loss, it is not recommended to enable FEC forall traffic. FEC introduces additional overhead by transmitting redundant data, which can consume bandwidth and degrade performance for non-critical traffic.Instead, FEC should be selectively enabled for sensitive applications (e.g., real-time voice and video) where packet loss has a significant impact. This approach balances performance and resource utilization effectively. References:
HCSA-Presales-IP Network Study Guide, Section: "SD-WAN Packet Loss Mitigation Techniques."
Huawei SD-WAN Solution Documentation, FEC Configuration Guidelines.

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