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Huawei H35-210_V2.5 (HCIA-Access V2.5) Certification Exam is a professional certification exam offered by Huawei Technologies Co. Ltd. H35-210_V2.5 exam is designed to validate the skills and knowledge of professionals in the field of access network technology. HCIA-Access V2.5 certification exam covers a wide range of topics, including network fundamentals, access network principles, access network devices and solutions, network security, and network management.
NEW QUESTION # 119
Which of the following indicator status indicates that the MA5600T/MA5680T control board is running properly?
- A. Green 0.5s on and 0.5s off repeatedly
- B. Steady green
- C. Green is on and off repeatedly
- D. Green 0.25s on and 0.25s off repeatedly
Answer: B
NEW QUESTION # 120
The Ethernet technology is a widely used technology. According to different transmission rates, the Ethernet technology is classified into 10 Mbit/s, 100 Mbit/s, and 1000 Mbit/s. The 10 Mbit/s and 100 Mbit/s Ethernet transmission media are twisted pairs, but the 1000 Mbit/s Ethernet is too fast and requires optical fibers as the transmission media.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 121
Which is the default read community and write community of SNMP V2?
- A. pub,pri
- B. public,private
- C. read,write
- D. common, secret
Answer: B
NEW QUESTION # 122
In the ODN network, which of the following protection methods can only protect the backbone fiber? (Multiple choice)
- A. TypeC dual-homing protection
- B. TypeB dual-homing protection
- C. Typec single-homing protection
- D. TypeB single-homing protection
Answer: A,C
NEW QUESTION # 123
Which of the following statements about XGS-PON key technologies are incorrect? (Select All that Apply)
- A. The optical module on the OLT side must support burst transmission.
- B. To ensure data security, XGS-PON uses the AES encryption algorithm to encrypt an entire packet.
- C. The OLT retains equalization delay parameters unchanged after initial ONU registration.
- D. The dynamic threshold adjustment function enables the OLT to adjust the threshold when receiving optical signals.
Answer: B,C
Explanation:
Comprehensive and Detailed Step by Step Explanation:
* A (Incorrect): XGS-PON encrypts the payload, not the entire packet.
NEW QUESTION # 124
The SNMP protocol is at the ( ) layer in the TCP/IP protocol stack?
- A. Application layer
- B. Network layer
- C. Transport layer
- D. Control layer
Answer: A
Explanation:
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.
NEW QUESTION # 125
Which of the following reasons may cause the voice user to pick up the phone without dial tone?
- A. Data error
- B. Device port hardware failure
- C. External line failure
- D. No voice file is loaded
Answer: A,B,C,D
NEW QUESTION # 126
According to the H.248 protocol, what is the type of terminal occupied when the telephone terminal is off-hook?
- A. Semi-permanent terminal
- B. Temporary terminal
- C. Permanent terminal
- D. Persistent Terminal
Answer: A
NEW QUESTION # 127
Which of the following protocols works at the transport layer and is connectionless-oriented?
- A. TCP
- B. ARP
- C. IP
- D. UDP
Answer: D
Explanation:
The transport layer in the OSI model is responsible for end-to-end communication and includes two main protocols: TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) .
* IP (Internet Protocol) : Works at the network layer and is responsible for routing packets across networks.
* ARP (Address Resolution Protocol) : Works at the network layer and maps IP addresses to MAC addresses.
* TCP : A connection-oriented protocol at the transport layer that ensures reliable communication through acknowledgments and retransmissions.
* UDP : A connectionless-oriented protocol at the transport layer that provides faster but less reliable communication compared to TCP.
Since the question specifies a connectionless-oriented protocol at the transport layer, the correct answer is UDP .
References:
* HCIA Huawei ACCESS Official Documentation , Chapter: Transport Layer Protocols.
* TCP/IP Protocol Suite Overview by Huawei.
NEW QUESTION # 128
Which method does BTV service use to send messages in the network?
- A. Broadcast
- B. Multicast
- C. Unicast
Answer: B
NEW QUESTION # 129
Which of the following are not features of smart vlan?
- A. Under the same VLAN, the service flow between service virtual ports can be used for Layer 2 intercommunication
- B. A Smart VLAN can contain multiple uplink ports and multiple service virtual ports
- C. There are two types of ports: uplink port and service virtual port
- D. Smart VLAN is mainly used to distinguish users, each user has a VLAN.
Answer: A,D
NEW QUESTION # 130
MA5680T supports QinQ and VLAN stacking attributes.
Which of the following VLANs supports QinQ attributes?
- A. Common vlan
- B. smart vlan
- C. sub vlan
- D. super vlan
Answer: B
NEW QUESTION # 131
Which of the following modules is not a functional module of the MA5600 SCU main control board?
- A. CPU module
- B. Separator module
- C. Ethernet switch module
- D. Clock module
Answer: B
NEW QUESTION # 132
What is the number of ADSL2+ subbands?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION # 133
Which of the following statements about the loss of fiber connection points is correct?
- A. Splicing > cord end connector > movable connector
- B. Cord end connector > movable connector > splicing
- C. Movable connector > cord end connector > splicing
- D. Movable connector > splicing > cord end connector
Answer: C
Explanation:
* Fiber Connection Loss Overview :
* Fiber connection points introduce optical loss due to imperfections in alignment, reflections, or contamination.
* Loss Comparison :
* Movable Connector : Highest loss due to potential misalignment, contamination, and reflections.
* Cord End Connector : Moderate loss, as these connectors are typically factory-polished and more stable than movable connectors.
* Splicing : Lowest loss, as fusion splicing provides near-perfect alignment and minimal reflection.
* Why C?
* The order of losses from highest to lowest is: Movable connector > Cord end connector > Splicing .
Thus, the correct answer is C .
References:
* HCIA Huawei ACCESS Official Documentation , Chapter: Fiber Optic Connections.
* ITU-T G.652 Standards for Optical Fiber .
NEW QUESTION # 134
The OLT supports multiple protection switching modes for GPON lines. The ( ) technology is supported by the OLT to protect the backbone and branch optical fibers at the same time.
- A. Type D
- B. Type C
- C. Type B
- D. Type A
Answer: B
Explanation:
GPON networks use various protection mechanisms to ensure high availability and reliability.
These mechanisms are classified into different types based on their scope and functionality:
Type A:
Protects only the trunk fiber (between the OLT and the splitter). Does not protect branch fibers (between the splitter and ONUs).
Type B:
Protects the trunk fiber but does not provide simultaneous protection for branch fibers.
Type C:
Provides full protection for both the trunk and branch fibers. Uses redundant fibers and splitters to ensure continuity in case of a failure.
Type D:
Not a standard GPON protection type.
Since the question specifies protection for both the backbone (trunk) and branch fibers, the correct answer is Type C.
NEW QUESTION # 135
MA5680T configures GPON ONT templates through templates.
What templates need to be configured?
- A. DBA template
- B. GPON ONT line template
- C. GPON ONT capability template
- D. GPON ONT business template
Answer: A,B,D
NEW QUESTION # 136
Regarding MA5600T/MA5680T Ethernet link aggregation, which of the following statements is wrong?
- A. Cross-board aggregation is not supported
- B. Supports up to 512 aggregation groups, and each aggregation group includes up to 8 physical ports.
- C. Supports link aggregation in load sharing mode and non-load sharing mode (active/standby mode).
- D. Support manual configuration and static LACP link aggregation, but does not support dynamic LACP link aggregation.
Answer: A
NEW QUESTION # 137
command...
What is the correct description of the three points in ./.profile?
- A. The third point. Connected to the previous /, which means the root directory
- B. The third point. Before profile, the entire .profile is a file name, which means a hidden file
- C. The second point. Connected to the back /, ./ indicates the current directory
- D. The first point. Means execution, same as sh
Answer: B,C,D
NEW QUESTION # 138
What are the alarm levels of U2000?
- A. Urgent
- B. Important
- C. Secondary
- D. Fatal
Answer: A,B,C
NEW QUESTION # 139
Generally, you are advised to configure NMS VLANs as follows:
vlan 350 smart
vlan desc 350 description "Manage"
port vlan 350 0/8 0
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 140
The xPON system adopts WDM technology to realize single-fiber bidirectional transmission.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION # 141
Regarding the use of ADSL interleaving mode, which of the following statements is correct?
- A. Poor stability and long delay
- B. Increased stability and short delay
- C. Increased stability and long delay
- D. Poor stability and short delay
Answer: C
NEW QUESTION # 142
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