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NEW QUESTION # 37
Which of the following can be used as the conditions for microsegmentation to divide EPGs? (Select All that Apply)
Answer: A,B,C,D
Explanation:
Microsegmentation in Huawei's data center networks (e.g., CloudFabric with SDN) divides Endpoint Groups (EPGs) to enforce fine-grained security policies. EPGs group endpoints (e.g., VMs) based on attributes. Let's evaluate each option:
A . Operating system: This is true. The OS type (e.g., Linux, Windows) can be used to segment EPGs, enabling policy enforcement based on OS-specific security needs. TRUE.
B . VM name: This is true. VM names can be used as identifiers for microsegmentation, allowing policies to target specific VMs. TRUE.
C . IP address: This is true. IP addresses are commonly used to define EPG boundaries, especially for network-based segmentation. TRUE.
D . MAC address: This is true. MAC addresses can segment EPGs, particularly for Layer 2-based policies or device-specific isolation. TRUE.
All options A, B, C, and D are valid conditions for microsegmentation to divide EPGs in Huawei's implementation.
NEW QUESTION # 38
An engineer must isolate broadcast domains while allowing multiple tenants to share the same physical infrastructure. Which combination best fulfills both Layer 2 isolation and scalable overlay deployment?
Answer: A
Explanation:
VXLAN encapsulation combined with unique VNIs provides scalable Layer 2 isolation across a shared IP fabric. This approach supports significantly more segments than VLANs while enabling flexible multi-tenant deployments.
NEW QUESTION # 39
Which of the following protocols is used to back up session tables between the active and standby firewalls in the hot standby scenario?
Answer: D
Explanation:
In a hot standby scenario, firewalls (e.g., Huawei USG series) maintain high availability by synchronizing session tables between active and standby devices to ensure seamless failover.
Let's evaluate each protocol:
A). M-LAG (Multi-Chassis Link Aggregation): M-LAG is a link aggregation technology for switches, not designed for session table backup between firewalls. Incorrect.
B). VRRP (Virtual Router Redundancy Protocol): VRRP provides gateway redundancy by electing a master router, but it does not handle session table synchronization between firewalls. Incorrect.
C). BFD (Bidirectional Forwarding Detection): BFD is a fast failure detection protocol used with routing protocols, not for session table backup. Incorrect.
D). HRP (Hot Standby Redundancy Protocol): HRP is Huawei's proprietary protocol specifically designed for firewall hot standby scenarios. It synchronizes session tables, configuration data, and status information between active and standby firewalls to ensure stateful failover. Correct.
Thus, the answer is D (HRP).
NEW QUESTION # 40
iMaster NCE-Fabric is Huawei's DC controller. Tenants can use it to create VPCs and deploy logical networks as required. After logical NEs are deployed, the corresponding network configurations are delivered to underlying network devices. Which of the following statements is false about the delivered network configurations?
Answer: A
Explanation:
iMaster NCE-Fabric automates network configuration delivery in Huawei's CloudFabric. Let's evaluate each statement:
A). Logical switches are mainly used for Layer 3 communication between hosts on a VXLAN network. These switches correspond to Layer 3 gateway configurations such as VBDIF interface and VPN instance configurations on physical devices: This is false. Logical switches in iMaster NCE-Fabric primarily handle Layer 2 communication (e.g., bridging within a VNI), corresponding to Bridge Domains (BDs) and Layer 2 VNIs. Layer 3 communication is managed by gateways, not logical switches. FALSE.
B). An end port represents an online host. It corresponds to the traffic encapsulation type (whether a VLAN tag is carried) configured on a Layer 2 sub-interface of a physical device: This is true.
End ports map to host connections, with encapsulation (VLAN-tagged or untagged) configured on sub-interfaces. TRUE.
C). A logical port is equivalent to an independent physical port that is used by a host to connect to a VXLAN network. It corresponds to the Layer 2 sub-interface configuration on a physical device:
This is true. Logical ports represent host connections, mapped to Layer 2 sub-interfaces for VXLAN access. TRUE.
D). Logical switches are mainly used for Layer 2 communication between hosts on a VXLAN network. These switches correspond to BD and Layer 2 VNI configurations on physical devices:
This is true. Logical switches facilitate Layer 2 connectivity, aligning with BD and VNI settings.
TRUE.
Thus, A is the false statement because logical switches are for Layer 2, not Layer 3, communication.
NEW QUESTION # 41
Which of the following statements is false about the overlay technology and VXLAN protocol?
Answer: B
Explanation:
VXLAN is an overlay technology that encapsulates Layer 2 frames within UDP packets to create scalable virtual networks, widely used in Huawei's data center architectures. Let's evaluate each statement:
A . A VXLAN tunnel endpoint that performs encapsulation is called a VNI: This is incorrect. A VXLAN Tunnel Endpoint (VTEP) is the device (physical or virtual) that performs encapsulation and decapsulation. The VNI (VXLAN Network Identifier) is a 24-bit field in the VXLAN header that identifies the virtual network, not the endpoint. FALSE.
B . VXLAN uses ECMP of the underlay network to improve network forwarding performance: Equal-Cost Multi-Path (ECMP) routing in the underlay network allows VXLAN to distribute traffic across multiple paths, enhancing load balancing and performance. This is a standard feature in Huawei's VXLAN implementations. TRUE.
C . A VXLAN network is built based on UDP: VXLAN encapsulates Ethernet frames within UDP packets (using port 4789), making it a UDP-based overlay protocol. This is a core characteristic of VXLAN. TRUE.
D . VXLAN expands the number of subnets to 16 million and supports multi-tenancy: With a 24-bit VNI, VXLAN supports up to 16 million (2
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