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Huawei HCIE-Datacom V1.0 Sample Questions (Q312-Q317):

NEW QUESTION # 312
The following statement about the application of BFD is correct?

A. BFD single-hop detection refers to the IP connectivity detection of two direct-connected systems
B. The one-arm echo function refers to the detection of the connectivity of the forwarding link through the loopback operation of the BFD packet
C. BFD multi-hop detection means that BFD can detect arbitrary paths between two systems that may span many hops or overlap in some parts
D. BFD and OSPF linkage is to associate BFD and OSPF, and notify OSPF through BFD's rapid sensing of link failures, thereby speeding up OSPF Response to changes in network topology

Answer: A,B,C,D

NEW QUESTION # 313
OSPFv2 is an IGP running on IPv4 networks, whereas OSPFv3 is an IGP running on IPv6 networks. OSPFv2 and OSPFv3 have similar LSA types, but their LSA functions are slightly different. Which of the following is not an OSPFv3 LSA type?

A. AS-External-LSA
B. Router-LSA
C. Network-LSA
D. ASBR-Summary-LSA

Answer: D

Explanation:
Comprehensive and Detailed Explanation:
OSPFv2 (for IPv4) and OSPFv3 (for IPv6) LSAs differ in function and naming conventions.
Key Differences in OSPFv3 LSAs:
OSPFv3does not use ASBR-Summary-LSA. Instead, it introduces newInter-Area Prefix LSAs (Type 3) and Inter-Area Router LSAs (Type 4).
OSPFv2 ASBR-Summary-LSA (Type 4) is replaced in OSPFv3 by Inter-Area Router LSA (Type 4).
OSPFv3 LSA Types:
#Router-LSA (Type 1)- Describes router interfaces and links.
#Network-LSA (Type 2)- Describes broadcast network links.
#Inter-Area Prefix LSA (Type 3)- Replaces Summary LSAs for routes.
#Inter-Area Router LSA (Type 4)- Replaces ASBR Summary LSAs.
#AS-External LSA (Type 5)- Describes external routes (same as OSPFv2).
SinceASBR-Summary-LSA (Type 4) does not exist in OSPFv3, the correct answer isA.
#Reference:Huawei HCIE Datacom - OSPFv3 LSA Types

NEW QUESTION # 314
To allow only authorized users (users who obtain IP addresses through authorized DHCP servers or use specified static IP addresses) to access the network shown in the figure, which of the following solutions can be used?

A. DAI + IPSG
B. DHCP Snooping + IPSG
C. DAI + Port Security
D. DHCP Snooping + DAI

Answer: B

Explanation:
Understanding Network Security for Authorized User Access
🔹 Problem Scenario:
Only authorized users should be allowed network access.
Users can obtain IP addresses either via DHCP or a predefined static IP list.
Unauthorized users (e.g., attackers using rogue DHCP servers or spoofed IPs) must be blocked.
🔹 Required Technologies for Securing Access:
1️⃣ DHCP Snooping - Protects against rogue DHCP servers and builds a binding table of legitimate DHCP clients.
2️⃣ IP Source Guard (IPSG) - Ensures that only authorized IP-MAC bindings can send traffic.
Analysis of the Answer Choices:
❌ A. DAI + Port Security (Incorrect)
DAI (Dynamic ARP Inspection) prevents ARP spoofing but does not validate IP-MAC-DHCP bindings.
Port Security only limits MAC addresses per port but does not verify IP addresses.
Does NOT protect against unauthorized static IP users.
✅ B. DHCP Snooping + IPSG (Correct)
DHCP Snooping:
Prevents rogue DHCP servers from assigning unauthorized IPs.
Builds a DHCP binding table (IP-MAC-Port).
IP Source Guard (IPSG):
Blocks traffic from IPs not listed in the DHCP snooping binding table.
Can be configured to allow manually specified static IP addresses.
Best choice to allow only authorized users (both DHCP and static IP users).
❌ C. DHCP Snooping + DAI (Incorrect)
DAI (Dynamic ARP Inspection) prevents ARP spoofing but does not block unauthorized static IP users.
Lacks IP-level access control needed to enforce static IP policies.
❌ D. DAI + IPSG (Incorrect)
IPSG (IP Source Guard) needs DHCP Snooping to build the binding table.
Without DHCP Snooping, IPSG cannot function properly.
DAI does not provide complete protection against unauthorized users.
Why is the Answer B (DHCP Snooping + IPSG)?
✅ Ensures only users assigned a DHCP IP (or authorized static IPs) can send traffic.
✅ Blocks rogue DHCP servers and unauthorized static IP users.
Real-World Application:
Enterprise Networks: Prevents unauthorized static IP users or attackers from accessing VLANs.
Public Wi-Fi Security: Ensures only authorized users receive IPs and can send traffic.
✅ Reference: Huawei HCIE-Datacom Guide - DHCP Snooping and IPSG Security Mechanisms

NEW QUESTION # 315
Huawei Open Programmability System (OPS) uses HTTP methods to access managed objects to manage network devices. Drag the HTTP methods to their corresponding functions.

Answer:

Explanation:

Huawei Datacom Reference:
"In RESTful APIs, GET is used for reading data, POST for creation, PUT/PATCH for updates, and DELETE for deletion. PATCH allows partial updates while PUT replaces the entire resource." (Source: HCIE-Datacom V1.0 - OPS & NETCONF API Chapter)

NEW QUESTION # 316
The following statement about static VXLAN tunnel configuration is correct?

A. An NVE interface can be associated with multiple VNls, so you can create only one NVE interface when there are multiple BDs
B. NVE interface, and multiple VXLAN tunnels can create only one NVE interface
C. For a VXLAN tunnel, you need to create a corresponding NVE interface, in which you explicitly specify the source IP address and the destination IP address , so there are multiple VXLAN tunnels on the VTEP that must be vE interfaces The destination address of the VXLAN tunnel is specified in the
D. A BD needs to create an NVE country, and when there are multiple BDs, multiple NVE interfaces must be created

Answer: B

NEW QUESTION # 317
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