H35-210_V2.5 Exam Questions & Answers
HCIA-Access V2.5 • Huawei
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Sample H35-210_V2.5 Questions
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By default, ONUs connected to the same PON port of a Huawei OLT can communicate with each other at Layer 2 if they use the same service VLAN.
Default Behavior of ONUs :
By default, ONUs (Optical Network Units) connected to the same PON port of a Huawei OLT are isolated at Layer 2 .
This isolation ensures that ONUs cannot communicate directly with each other, even if they belong to the same service VLAN.
Why FALSE?
The statement incorrectly claims that ONUs can communicate with each other at Layer 2 by default. In reality, Layer 2 isolation is a security feature designed to prevent unauthorized communication between ONUs.
Enabling Communication :
If Layer 2 communication between ONUs is required, it must be explicitly enabled through configuration (e.g., by disabling Layer 2 isolation).
Thus, the correct answer is B .
HCIA Huawei ACCESS Official Documentation , Chapter: GPON Security Features.
OLT Configuration Guide by Huawei.
Which of the following are access network VLAN types? (Select All that Apply)
Comprehensive and Detailed Step by Step All options are valid VLAN types in Huawei access networks:
MUX VLAN: Isolates users within the same VLAN.
Smart VLAN: Dynamically assigns VLANs based on MAC/IP addresses.
Super VLAN: Aggregates multiple sub-VLANs into one logical VLAN.
In the access technology of the access network, which of the following access modes can provide the maximum access bandwidth?
GPON (Gigabit Passive Optical Network) is a fiber-based access technology that supports downstream bandwidth up to 2.5 Gbps and upstream up to 1.25 Gbps, far exceeding the bandwidth capabilities of DSL technologies. ADSL (up to 8 Mbps), ADSL2+ (up to 24 Mbps), and VDSL (up to 100 Mbps over short distances) are copper-based technologies with significantly lower maximum bandwidth compared to GPON.
The SNMP protocol is at the ( ) layer in the TCP/IP protocol stack?
SNMP Overview :
SNMP (Simple Network Management Protocol) is used for managing and monitoring network devices.
TCP/IP Protocol Stack Layers :
Application Layer : Protocols that provide services directly to end users or applications (e.g., HTTP, FTP, SMTP).
Transport Layer : Protocols that ensure reliable data transfer (e.g., TCP, UDP).
Network Layer : Protocols that handle packet routing (e.g., IP).
Control Layer : Not a recognized layer in the TCP/IP model.
SNMP Placement :
SNMP operates at the Application Layer of the TCP/IP protocol stack. It uses UDP (User Datagram Protocol) as its transport protocol but resides at the application layer.
Why A?
SNMP is an application-layer protocol designed for network management tasks.
Thus, the correct answer is A .
HCIA Huawei ACCESS Official Documentation , Chapter: SNMP Protocol.
RFC 1157: SNMP Protocol Specification .
When adding an ONU to the OLT, if Control flag is deactive, run theont activatecommand in GPON port mode to activate the ONU.
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