Pass the Huawei HCIE-Datacom H12-891_V1.0 Questions and answers with CertsForce

Comprehensive and Detailed Explanation:

✔Analyzing the Python Code:

✅(A) Correct→ print(r.json()) prints the response JSON, showing thetoken ID.

✅(B) Correct→ The token request URL is correctly specified.

✅(D) Correct→ json={"userName": nbi_name, "password": nbi_pwd} confirms the requestbody is in JSON format.

❌(C) Incorrect:

The requestuses POST, not GET (requests.post() is explicitly called).

????Reference:Huawei HCIE Datacom – RESTful API Authentication in iMaster NCE

Comprehensive and Detailed Explanation:

✔Thecorrect sequence of operations:

Download the file from remote device(/vrpcfg.cfg) → Store as C:\backup.cfg.

Upload the renamed file (backup.cfg) back to the remote device.

✔Breaking Down the Correct Option (B):

✅sftp.get('/vrpcfg.cfg', r'C:\backup.cfg')→ Downloads vrpcfg.cfg from the remote device and renames it backup.cfg in C:\.

✅sftp.put(r'C:\backup.cfg', '/')→ Uploads backup.cfg back to the remote device.

????Reference:Huawei HCIE Datacom – Python SFTP File Transfer Using Paramiko

In Huawei'sSRv6 instruction namingsystem, each letter keyword represents a specific forwarding behavior:

X (Cross): Forwards packets viaspecified Layer 3 interfaces→✅

M (MAC): SearchesLayer 2 forwarding tableforbroadcast/multicast,not unicast→❌

V (VPN): Searches theVPN routing table (VRF)for forwarding →✅

T (Table): Searches aspecific routing table (e.g., user-defined)→✅

Correct answers: A, C, D

Understanding 802.1X Authentication in Enterprise Networks

????What is 802.1X?

802.1X is a network access control (NAC) protocol that enforces authentication before allowing a device to connect to a LAN.

It usesEAP (Extensible Authentication Protocol)overRADIUSfor user verification.

Typically deployed incorporate and campus networksforsecure wired and wireless access.

????How Does 802.1X Work?

1️⃣Client (Supplicant) → Requests network access.

2️⃣Switch (Authenticator) → Forwards request to RADIUS server.

3️⃣RADIUS Server → Verifies credentials & grants access.

Mandatory Steps to Enable 802.1X on SW3

✅A. Configure an AAA Scheme

Defines authentication, authorization, and accounting (AAA) methods.

Links802.1X authentication to the RADIUS server.

✅B. Configure an Authentication Profile

Specifies how authentication is handled on the switch.

Associates802.1X authentication with an AAA scheme.

✅C. Configure an Authentication Domain

Groups authentication policies for different user types.

MapsAAA scheme to user login requests.

✅D. Configure an 802.1X Access Profile

Applies 802.1X authentication to specific switch ports (GE0/0/2 & GE0/0/3).

Ensures thatonly authenticated users can pass traffic.

Why Are All Four Steps Necessary?

✅Each step plays a critical role in enabling 802.1X authentication and linking it to the RADIUS server.

✅Without any one of these configurations, the 802.1X authentication process would fail.

Real-World Application:

Enterprise Wired Security:Ensures thatonly authenticated devicesaccess corporate networks.

University Campuses & Public Wi-Fi:Prevents unauthorized access tosecure LAN environments.

✅Reference:Huawei HCIE-Datacom Guide – 802.1X Authentication & RADIUS Server Configuration

Link-LSA (Type 8)in OSPFv3 performs the following:

Advertises therouter’s link-local addressto neighbors.

Advertises therouter’s interface IDon the link.

CarriesIPv6 prefixesassociated with the interface (since Router LSA no longer does this in OSPFv3).

TheOptions field in Link-LSAcontainscapabilities of the originating router,notthe options from Network-LSA.

So,Option D is incorrect— the Link-LSA doesnot advertise options from the Network-LSA.

Correct answer: D

PQ (Priority Queuing) ensures low-latency services like voice and video are prioritized.

WFQ (Weighted Fair Queuing) fairly allocates remaining bandwidth to services like FTP.

Option B provides a balanced approach: guarantees for voice/video via PQ, and fairness for FTP via WFQ.

Exact Extract - Huawei HCIE-Datacom QoS Module:

“Voice and video traffic should be handled by PQ to minimize delay and jitter. Non-critical services such as FTP should be placed in WFQ queues to ensure bandwidth fairness.”

The Loopback interface is not advertised by default in IS-IS, unless a specific command is used (like network entity with loopback settings or enabling it manually). In this case, the GE0/0/0 and GE0/0/1 interfaces are both UP, and have IS-IS L1/L2 enabled. These two interfaces qualify to advertise IS-IS routes.

Exact Extract - Huawei HCIE-Datacom V1.0 IS-IS Chapter

“By default, only physical interfaces in UP state and configured with IS-IS (L1, L2, or L1/L2) participate in IS-IS. Loopback interfaces must be explicitly advertised using route import policies.”

Comprehensive and Detailed In-Depth Explanation:

TheOutbound Route Filtering (ORF)function in BGP allows a BGP speaker to inform its peer about the prefixes that it wants to receive, thereby reducing unnecessary route advertisements.

IP Prefix-List (D)is the correct answer because it is used to define the list of prefixes that are sent to the BGP peer during theORF capability negotiation.

Filter-policy (A)andRoute-policy (B)are used for controlling routing information locally or filtering incoming/outgoing routes but do not directly control the number of routes sent using ORF.

ACL (C)is primarily used for packet filtering and is not related to BGP route filtering.

Comprehensive and Detailed In-Depth Explanation:

Prefix Segment:

Represents adestination prefixin the network.

APrefix SID (Segment Identifier)is a globally unique SID that maps to anIP prefixand is within theSRGB (Segment Routing Global Block)range.

Therefore,Cis correct.

Ais incorrect because a prefix SIDis within the SRGB range, not out of it.

Adjacency Segment:

Represents alink (adjacency)between two nodes.

AnAdjacency SIDislocally significantand typically allocated from theSRLB (Segment Routing Local Block)range.

It uniquely identifies a link between nodes in thesource node’s local routing table.

Therefore,Dis correct, whileBis incorrect because an adjacency SID is not necessarily an offset within the SRGB.

Comprehensive and Detailed Explanation:

✔Huawei OPS (Open Programmability System)followsRESTful API principles, usingHTTP methodsfor device management.

✔HTTP Methods Used in OPS:

✅GET→ Retrieves data from the device.

✅POST→ Creates new data/configurations.

✅PUT→ Replacesentire configuration objects.

✅PATCH→Updates specific fieldsof a configuration object.✅(Correct Answer)

SincePATCH is used for modifying specific values in managed objects, the correct answer isD.

????Reference:Huawei HCIE Datacom – RESTful API Operations in Huawei OPS