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| Section | Objectives |
|---|---|
| IPv6 and Advanced IP Technologies | - IPv6 deployment
|
| Data Center and Virtualization Technologies | - VXLAN and overlay networks
|
| Network Security and QoS | - Security mechanisms
|
| WAN and VPN Technologies | - MPLS fundamentals
|
| Enterprise Network Architecture | - Network design principles
|
| Routing and Switching Technologies | - Switching technologies
|
| Network Automation and Programmability | - SDN and automation
|
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NEW QUESTION # 80
Which of the following statements does not cause the flapping of a VRRP group?
Answer: C
Explanation:
VRRP (Virtual Router Redundancy Protocol) and Flapping
VRRP ensures gateway redundancy by allowing multiple routers to work together as a virtual router.
Flapping occurs when the master and backup routers frequently switch roles.
Causes of VRRP Flapping:
# A. Too small interval between Advertisement packet transmissions - Can cause flapping
* If the Advertisement interval is too short, frequent VRRP state changes can occur.
# C. Packet loss on an interface of the backup device - Can cause flapping
* If the backup router loses VRRP packets, it might assume the master is down and initiate an election.
# D. Flapping on the link transmitting VRRP Advertisement packets - Can cause flapping
* If the link used for VRRP experiences instability, packets may be lost, triggering VRRP role changes.
Incorrect Answer Explanation:
# B. Inconsistent preemption delay settings - Does NOT cause VRRP flapping
* Preemption delay only affects when a router takes over as master after recovering from a failure.
* It does not directly cause flapping because the role change happens only after a delay, preventing frequent transitions.
Reference from Huawei HCIE-Datacom Documentation:
* Huawei VRRP Configuration Guide - Preventing VRRP Flapping
* HCIE-Datacom Study Material - VRRP Timers and Stability
NEW QUESTION # 81
The firewall has created some security zones by default, which of the following security zones does not exist by default on the firewall?( Radio).
Answer: B
NEW QUESTION # 82
The following description of the characteristics of cross-domain VN-Optionc is correct?
Answer: B,C
NEW QUESTION # 83
Network Admission Control (NAC) needs to be deployed on the network shown in the figure. Drag a proper authentication mode to each authentication point.
Answer:
Explanation:
Explanation:
Correct Matching of Authentication Methods:
1#802.1X authentication#PC (GE0/0/2 on SW3)
2#MAC address authentication#IP Phone (GE0/0/3 on SW3)
3##Portal authentication#Wireless Clients (Connected via SW2/AP)
Understanding Network Admission Control (NAC) Authentication Methods
#Network Admission Control (NAC)enforcessecurity policies before allowing devices onto the network.
#Different types of devices requiredifferent authentication methodsbased oncapabilities and security requirements.
Analysis of Each Authentication Type:
#1##802.1X Authentication (Used for PC on GE0/0/2 of SW3)
Best for devices that support user authentication (e.g., PCs, Laptops).
Requiressupplicant software (e.g., Windows or macOS built-in 802.1X client).
Providesstrong security using EAP (Extensible Authentication Protocol) over RADIUS.
#2##MAC Address Authentication (Used for IP Phone on GE0/0/3 of SW3)
Best for devices that do not support username/password authentication (e.g., IP Phones, IoT devices).
UsesMAC addresses as identity credentials.
Suitable forVoIP networks, industrial IoT, and surveillance cameras.
#3##Portal Authentication (Used for Wireless Clients on SW2/AP)
Best for guests or mobile users accessing Wi-Fi networks.
Redirects users to aweb-based login pagebefore granting access.
Used inpublic hotspots, campus Wi-Fi, and enterprise guest networks.
Why These Assignments Are Correct?
1##802.1X for PC:
PCs support 802.1X authentication via supplicants (EAP-MD5, PEAP, etc.).
Ensureshigh security by verifying user credentials.
2##MAC Address Authentication for IP Phone:
IP Phones lack a username/password interface, so authentication is done via MAC addresses.
Simplifies authentication while maintaining security.
3##Portal Authentication for Wireless Clients:
Wireless users do not use 802.1X authentication directly; instead, they are redirected to a web login page.
Common in enterprise guest Wi-Fi and public hotspots.
Real-World Application:
Enterprise NAC Deployment:Ensuresonly authorized users and devices access the corporate network.
Campus & Hotel Wi-Fi Security:UsesPortal Authentication for guests, 802.1X for employees, and MAC- based for VoIP.
#Reference:Huawei HCIE-Datacom Guide - NAC Authentication Methods & Best Practices
NEW QUESTION # 84
If SRv6 needs to be deployed on a bearer WAN, which of the following technologies are required? (Select all that apply)
Answer: B,C
Explanation:
ForSRv6 (Segment Routing over IPv6)deployment on abearer WAN, the following are essential:
IGP (OSPFv3 or IS-IS): Required for SID advertisement and SRv6 route computation ## BGP: Required when deployinginter-domain SRv6or for control plane distribution of VPN/service routes ## Not required:
MPLS: SRv6 replaces MPLS labels withIPv6-based SIDs##
BGP-LU: Used inMPLS-based inter-AS scenarios,not applicableto SRv6 ##
Correct answers: B, C
Reference:Huawei HCIE-Datacom V1.0 Study Guide -Chapter: SRv6 FundamentalsSection: Control Plane Protocol Dependencies
NEW QUESTION # 85
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