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H19-427_V1.0-ENU Dumps 2025 - New Huawei H19-427_V1.0-ENU Exam Questions

NEW QUESTION # 19
In WLAN network, according to different channel bundling methods, it can be divided into several different types of channel working bandwidth: 40MHZ+, 40MHZ, 80MHZ, 80+80MHZ and 160MHZ.
Which of the following statements about the operating bandwidth of an 80 MHz channel is correct?

• A. 80MHz is to bundle two non-contiguous 40MHz channels together and select one of the four 20 MHZ channels as the main channel.
• B. 80MHz is to bundle two consecutive 40MHz channels together and select one of the four 20 MHZ channels as the main channel.
• C. 80MHz is to bundle two consecutive 40MHz channels together and select the higher frequency among the four 20 MHZ channels as the main channel.
• D. 80MHz is to bundle two non-contiguous 40MHZ channels together and select the higher frequency among the four 20 MHZ channels as the main channel

Answer: B

NEW QUESTION # 20
Which LAN-side networks does Huawei's SD-WAN solution support?

• A. L3 switch access
• B. Direct access by wireless users
• C. Wired user direct connection
• D. L2 switch access

Answer: A,B,C,D

NEW QUESTION # 21
Regarding the multi-hub scenario, which of the following descriptions is incorrect?

• A. Support for multi-active hub scenarios based on Spoke sites
• B. Support multi-hub scenarios based on business network segments
• C. A VPN can select two hubs from multiple hubs as branch interconnection hubs
• D. The branch interconnection hub in VPN can work in active-active mode

Answer: D

NEW QUESTION # 22
In the SD-WAN solution, which of the following policies can be configured directly on the controller?

• A. Firewall & IPS
• B. URL filtering
• C. National Secret Algorithm
• D. ACL traffic filtering

Answer: A,B,D

NEW QUESTION # 23
SD-WAN, like Internet and MPLs , is a pipeline service provided by operators to enterprises.

• A. Correct
• B. Error

Answer: A

NEW QUESTION # 24
Which of the following statements about antenna polarization are correct?

• A. The polarization of an antenna refers to the direction of the magnetic field strength formed when the antenna radiates.
• B. If the direction of the electric field of a radio wave is perpendicular to the ground, we call it a vertically polarized wave.
• C. The antenna radiates electromagnetic waves into the surrounding space, and the direction of its electric field changes according to a certain rule.
• D. A dual-polarized antenna is a combination of two antennas with perpendicular polarization directions, which can achieve optimal diversity gain and save installation space.

Answer: B,C,D

NEW QUESTION # 25
When designing a WLAN, which frequency should be selected for the 2.4 GHz band?

• A. 80 MHZ
• B. 20 MHZ
• C. 160 MHZ
• D. 40 MHZ

Answer: B

NEW QUESTION # 26
If the air interface rate of each AP is 54 Mbps, after deducting overhead, the actual throughput of each AP is approximately 20 Mbps. Consider a dormitory building with 20 dormitories on one floor, each with 5 people requiring internet access. Each user's internet bandwidth is 2 Mbps. If the concurrent internet access rate is 30%, how many APs should be deployed on this floor?

• A. 0
• B. 1
• C. 2
• D. 3

Answer: A

NEW QUESTION # 27
Which routing algorithm should be used in the following scenario: An enterprise leases three links: Telecom MPLS, Internt1, and Internet2. VoIP prioritizes the MPLS link. When the MPLS link is congested, low-priority applications are dispatched to other links to prevent MPLS link quality degradation from affecting VoIP services.

• A. Load balancing routing
• B. Bandwidth routing
• C. Application priority routing
• D. Link quality routing

Answer: C

NEW QUESTION # 28
In the Huawei SD-WAN solution architecture, which of the following functions belong to the control layer?

• A. NAT Stun Service
• B. Network Service Orchestration
• C. IPsec key exchange
• D. VPN topology definition

Answer: A,C,D

NEW QUESTION # 29
During installation, AP devices must have their actual installation locations uploaded to iMasterNCE-Campus for efficient subsequent operation and maintenance, as well as for providing value-added services based on terminal location. AP device information can be entered and uploaded using the CloudCampus app.
In addition to the above functions, which of the following functions does the CloudCampus app support?

• A. On-site acceptance
• B. Opening
• C. Operations and Maintenance
• D. Site Survey

Answer: A,B,C,D

NEW QUESTION # 30
The biggest change in the optoelectronic hybrid cable 2.0 is that the optoelectronic hybrid switch port changes from optical and electrical separation to optical and electrical integration. The structural optimization makes the splicing and use of the optoelectronic hybrid cable easier, while doubling the density of the optoelectronic ports.

• A. Correct
• B. Error

Answer: A

NEW QUESTION # 31
WLAN QoS is a differentiated service capability provided to meet the different network traffic requirements of wireless users.
What functions can be achieved by using QoS technology in WLAN networks?

• A. Fair occupation of wireless channels: Through Airtime scheduling, multiple users on the same radio frequency can occupy the wireless channel in a relatively fair manner in terms of time.
• B. Efficiently utilize wireless channel resources. Through the Wi-Fi multimedia standard WMN (Wi-Fi Multimedia), high-priority data is prioritized over competing for wireless channels.
• C. Differentiated services for different types of services: by matching message information with ACL rules or identifying similar messages through application recognition, providing the same QOS service for similar messages, and realizing differentiated services for different types of services.
• D. Reducing network congestion: Through traffic regulation, the user's sending rate is limited, effectively avoiding data packet loss caused by network congestion.

Answer: A,B,C,D

NEW QUESTION # 32
MAC address authentication is an authentication method that controls user access rights based on the interface and terminal MAC addresses. What are its advantages?

• A. In the CloudCampus solution, you can rely on the terminal intelligent identification function to avoid copying the terminal MAC address.
• B. Authentication messages and data messages are separated through logical interfaces
• C. During MAC authentication, users do not need to manually enter username and password
• D. Ability to authenticate terminals that do not have 802.1X authentication capabilities, such as printers and fax machines

Answer: A,B,C,D

NEW QUESTION # 33
Huawei SD-WAN mainly establishes data channels through GRE or GRE Over IPsec.

• A. Correct
• B. Error

Answer: A

NEW QUESTION # 34
If the network has third-party WACs and APs in addition to switches and iMaster NCE-Campus that support free mobility, the free mobility feature is also compatible with this scenario.

• A. Correct
• B. Error

Answer: A

NEW QUESTION # 35
The latest version of SD.WAN solution supports large-scale networking using Layer 3 BGP and Layer 2 Vxlan

• A. Correct
• B. Error

Answer: B

NEW QUESTION # 36
In CloudCampus, iMaster NCE does not support device management through SNMP.

• A. Correct
• B. Error

Answer: B

NEW QUESTION # 37
What are the advantages of SD-WAN CPE?

• A. Plug-and-play equipment, simplified operation and maintenance
• B. Enterprise-level 5G export
• C. Application-level intelligent routing

Answer: A,B,C

NEW QUESTION # 38
In a WLAN AP static load balancing scenario, what is the maximum number of members supported by each static load balancing group?

• A. 0
• B. 1
• C. 2
• D. 3

Answer: A

NEW QUESTION # 39
Enterprise SD-WAN network can be divided into two layers: Underlay physical network and Overlay virtual network. The physical network and virtual network are coupled with each other.

• A. Correct
• B. Error

Answer: B

NEW QUESTION # 40
In an SD-WAN network, how many WAN links can be set up at each site as access links to the Internet?

• A. 0
• B. 1
• C. 2
• D. 3

Answer: A

NEW QUESTION # 41
Omnidirectional antenna coverage is recommended for open areas such as squares and parks.

• A. Correct
• B. Error

Answer: A

NEW QUESTION # 42
Which of the following statements about 802.1X authentication is incorrect?

• A. 802.1X can only be applied to the physical interface of the switch and cannot be applied to the logical interface.
• B. The 802.1X protocol is a Layer 2 protocol and does not require Layer 3. It does not require high performance of access devices and can effectively reduce network construction costs.
• C. The 802.1X system is a typical Client/Server structure.
• D. The 802.1X protocol is a port-based network access control protocol.

Answer: A

NEW QUESTION # 43
Wi-Fi 6 supports a variety of different GI lengths. In indoor environments with little interference, a larger G1 is recommended, while in outdoor environments with high interference, a smaller G1 is recommended.

• A. Correct
• B. Error

Answer: B

NEW QUESTION # 44
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