최신 H12-891_V1.0 무료덤프 - Huawei HCIE-Datacom V1.0

문제1

At the NETCONF content layer, the <config> operation may contain an operation attribute, which is used to specify an operation type for configuration data. Which of the following operation attributes are supported?

A. delete: The configuration data identified by the element that contains this attribute is deleted from the configuration datastore. If the configuration data does not exist in the configuration datastore, a deletion success message is returned.

B. remove: The configuration data identified by the element that contains this attribute is deleted from the configuration datastore. If the configuration data does not exist in the configuration datastore, a deletion success message is returned.

C. create: The configuration data identified by the element that contains this attribute is added to the configuration datastore only if the configuration data does not already exist in the configuration datastore. If it already exists in the configuration datastore, <rpc-error> with the <error-tag> value being data-exists is returned.

D. merge: The configuration data identified by the element that contains this attribute is modified if the configuration data already exists in the configuration datastore. If not, the configuration data is created in the datastore.

정답: A,C,D

설명: (DumpTOP 회원만 볼 수 있음)

문제2

As shown in the figure, R1, R2, R3, and R4 reside in the same MPLS domain, and LDP (Label Distribution Protocol) is used to distribute MPLS labels.
R4 is the egress LSR (Label Switching Router) for the FEC (Forwarding Equivalence Class) 4.4.4.0/24.
To make R4 aware of QoS forwarding priority of a packet sent from R1 and destined for 4.4.4.0/24, Without looking up R4's label forwarding information base, The outgoing label of the FEC on R3 should be _____ (Enter an Arabic numeral without symbols).

정답:

0
Explanation:
Understanding MPLS LDP and PHP (Penultimate Hop Popping):
#Label Distribution in MPLS LDP:
LDP assignslabels to FECsso that routers can forward packets based on labels rather than IP lookup.
Labels areadvertised downstream(from R4 to R3, R3 to R2, and so on).
#Penultimate Hop Popping (PHP) Concept:
Theegress LSR (R4)doesnot require an incoming labelfor 4.4.4.0/24.
Instead,R3 (Penultimate LSR) removes the labelbefore forwarding the packet to R4.
R3 forwards the packet as an IP packet, not an MPLS packet, toavoid an unnecessary label lookup at R4.
InMPLS LDP, the label "0" is used to indicate an implicit NULL label (PHP operation).
Why the Answer is "0" (Implicit NULL Label)?
#Since R4 is the egress LSR, it does not need a label for 4.4.4.0/24.
#R3 assigns the outgoing label as "0" (Implicit NULL Label)to indicate that the label should be removed before sending to R4.
#R4 receives the packet as a pure IP packet (no MPLS label).
Why Other Answers Are Incorrect?
#Any value other than "0"
If R3 assigns a label (e.g., 100), R4 would need to perform anunnecessary MPLS lookup, which is inefficient.
Using "0" ensures PHP occurs, optimizing the forwarding process.
#Reference:Huawei HCIE Datacom - MPLS LDP and Penultimate Hop Popping (PHP)

문제3

An LSR (Label Switching Router) supports various label retention modes. Which of the following statements regarding the liberal mode are correct?

A. An LSR reserves all labels distributed by its neighbor.

B. An LSR retains labels from a neighboring LSR only when the neighbor is its next hop.

C. This label retention mode saves memory and label space.

D. The liberal mode requires more memory and label space.

정답: A,D

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문제4

Which of the following statements are correct about the authentication protocols used inPortal authentication?

A. When Portal is used as the authentication protocol, the Portal server and access device only need to support the Portal protocol, but not the HTTP and HTTPS protocols.

B. When Portal is used as the authentication protocol, the Portal server needs to exchange authentication information with the access device, which then sends the information to the authentication server for identity authentication.

C. When HTTP or HTTPS is used as the authentication protocol, none of the devices involved in the authentication process need to support the Portal protocol.

D. When HTTP or HTTPS is used as the authentication protocol, the client needs to send authentication information to the access device, which then sends the information to the authentication server for identity authentication.

정답: B,D

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문제5

The telemetry network model is broadly and narrowly defined. Which of the following modules are involved intelemetry in a narrow sense (device-side telemetry)?

A. Data source

B. Data push

C. Data generation

D. Data subscription

정답: A,B,C

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문제6

Refer to the figure.

Which of the following steps are mandatory to enable 802.1X authentication on GE0/0/2 and GE0/0/3 of SW3 and configure a RADIUS server to authenticate and deliver network access rights to users?

A. Configure an AAA scheme.

B. Configure an authentication profile.

C. Configure an authentication domain.

D. Configure an 802.1X access profile.

정답: A,B,C,D

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문제7

Which of the following factors does not need to be considered during the selection of core devices for the enterprise bearer WAN?

A. Service volume

B. Node quantity

C. Physical location

D. Device naming conventions

정답: D

설명: (DumpTOP 회원만 볼 수 있음)

문제8

TheNETCONF content layercontainsdevice configuration data.
Which of the following statements are correct about the followingNETCONF configuration?
<?xml version="1.0" encoding="UTF-8"?>
<rpc xmlns="urn:ietf:params:xrnl:ns:netconf:base:1.0" message-id="801">
<edit-config>
<target>
<running/>
</target>
<default-operation>merge</default-operation>
<error-option>rollback-on-error</error-option>
<config xmlns:xc="urn:ietf:params:xml:ns:netconf:base:1.0">
<vlan
xmlns="http://www.huawei.com/netconf/vrp/huawei-vlan"
>
<vlans>
<vlan>
<vlanId>10</vlanId>
<protocolVlans>
<protocolVlan xc:operation="merge">
<protocolIndex>0</protocolIndex>
</protocolVlan>
</protocolVlans>
</vlan>
</vlans>
</vlan>
</config>
</edit-config>
</rpc>

A. VLAN 10 is created on the target device.

B. The <config> operation contains an operation attribute so that the modified data is merged.

C. The Huawei-YANG model is used.

D. The NETCONF <edit-config> operation is performed to load the configuration data to the startup configuration datastore.

정답: A,B,C

설명: (DumpTOP 회원만 볼 수 있음)

문제9

In the Huawei SD-WAN Solution, which of the following routing protocols is used to advertise VPN routes between CPEs?

A. BGP

B. IS-IS

C. OSPF

D. RIP

정답: A

설명: (DumpTOP 회원만 볼 수 있음)

문제10

Which of the following is not the function of OSPFv3 Link-LSAs?

A. Advertises a list of IPv6 prefixes of the local interface to other routers attached to the link.

B. Advertises the interface ID of the local router to other routers attached to the link.

C. Advertises the link-local address of the local interface to other routers attached to the link.

D. Advertises the Options field in the Network-LSA originated on the local link to other routers attached to the link.

정답: D

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문제11

On a broadcast network, if the DR priorities of two interfaces connecting two routers are set to 0, in which of the following states will the OSPF neighbor relationship stay?

A. Full

B. Down

C. Exchange

D. 2-way

정답: D

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문제12

Which of the following is the purpose of configuring IS-IS fragmentation on an IS-IS device?

A. Disable the device from learning IS-IS link-state information.

B. Disable the device from establishing IS-IS neighbor relationships.

C. There is no practical purpose.

D. Enable the device to support more IS-IS routes.

정답: D

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문제13

On the campus network shown, IPv6 is deployed for service tests. Four routers are deployed on the network, and OSPFv3 is used for IPv6 network connectivity. An engineer checks the LSDB of R2 and obtains a Link- LSA. Which of the following statements about the LSA are correct?

A. This LSA is generated by R2.

B. This LSA indicates that R2 does not support external routes but can participate in IPv6 route calculation.

C. The link-local address of R2's GE0/0/0 is FE80::2E0:FCFF:FECD:4F79.

D. The IPv6 address prefix of R2's GE0/0/0 is 2001:DB8:2345:23::/64.

정답: A,C,D

설명: (DumpTOP 회원만 볼 수 있음)

문제14

Which of the following statements is incorrect about intranet security design for a large or medium-sized virtualized campus network?

A. In addition to terminal access security, interface security must be considered during wireless network security design.

B. Traffic suppression can be configured on the wired network to block broadcast traffic by shutting down interfaces.

C. To secure data transmission, the CAPWAP tunnel between the AC and AP supports DTLS encryption.

D. Intranet security refers to both wired and wireless network security.

정답: B

설명: (DumpTOP 회원만 볼 수 있음)

문제15

When configuring a static VXLAN tunnel, you need to manually configure the _____, VTEP IP address, and ingress replication list. (Enter only uppercase letters.)

정답:

VNIInstatic
Explanation:
VXLAN tunnel configuration, you donot use a control planelike BGP EVPN. Instead, youmanually configureall necessary forwarding parameters, including:VNI (VXLAN Network Identifier): Identifies the VXLAN segment.VTEP IP Address: The remote tunnel endpoint.Ingress Replication List: Required for multicast emulation (flooding/BUM traffic) in the absence of a multicast control plane.Whenconfiguring statically, theVNIis essential to map Layer 2/3 services to the correct VXLAN segment.Thus, the correct word to complete the sentence is:VNICorrect answer: VNI

최신 H12-891_V1.0 무료덤프 - Huawei HCIE-Datacom V1.0

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