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Huawei H12-821_V1.0 (HCIP-Datacom-Core Technology V1.0) certification exam is designed to test the knowledge and skills of IT professionals in the field of data communication. It is an advanced-level certification exam that is focused on core technologies that are essential for building and managing data communication networks. Candidates who Pass H12-821_V1.0 Exam will be able to demonstrate their expertise in areas such as network architecture, protocol analysis, network security, and QoS (Quality of Service) management.
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Huawei H12-821_V1.0 (HCIP-Datacom-Core Technology V1.0) Certification Exam is a challenging certification exam designed to test the skills and knowledge of IT professionals in the field of data communication. HCIP-Datacom-Core Technology V1.0 certification exam is designed to assess a candidate’s ability to design, deploy, and maintain advanced data communication networks using Huawei technologies. Candidates who successfully Pass H12-821_V1.0 Exam will demonstrate their expertise in the latest technologies and techniques used in data communication.
NEW QUESTION # 64
As shown in the figure, R1 imports the direct route 10.1.1.0/24 to OSPF. An engineer enables bidirectional route re-advertisement on R2 and R3, and configures the following commands on R3. After the network becomes stable, which of the following is the Pre value of the route 10.1.1.0/24 in the routing table of R4?
[R3]acl 2000
[R3-acl-basic-2000] rule permit source 10.1.1.0 0
[R3-acl-basic-2000] quit
[R3]route-policy hcip permit node 10
[R3-route-policy-10] if-match acl 2000
[R3-route-policy-10] apply preference 14
[R3-route-policy-10] quit
[R3]ospf 1
[R3-ospf-1] preference ase route-policy hcip
Answer: A
Explanation:
Let's analyze the process step-by-step:
* R1 redistributes the direct route 10.1.1.0/24 into OSPF.
* This OSPF route reaches R2 and R3.
* R2 and R3 are in an environment that uses IS-IS towards R4.
* Both R2 and R3 re-advertise this OSPF route into IS-IS toward R4 (bidirectional route redistribution).
* On R3, a route-policy named hcip is applied to control ASE (Autonomous System External) route preference.
* The ACL matches the route 10.1.1.0/24.
* The route-policy sets the preference of this ASE route to 14.
* In Huawei VRP, if a route-policy applied via preference ase route-policy matches a route, it modifies the preference value of the redistributed route when it is advertised.
By default:
* OSPF ASE routes have a preference of 150.
* But in this case, due to the policy applied, the preference is explicitly changed to 14 on R3 before re- advertising to R4.
So, R4 will install the route 10.1.1.0/24 from R3 with preference 14, assuming R2 doesn't provide a better preference.
Reference from Huawei HCIP-Datacom-Core Technology Study Guide:
"You can control the preference of OSPF ASE routes by using a route-policy and applying it with the command preference ase route-policy. When the policy matches, the specified preference is used instead of the default (150)." (Chapter: OSPF Advanced Features - Section: Route Control and Inter-AS Route Redistribution)
NEW QUESTION # 65
When receiving a packet, a router matches the packet againstACL rules. The ACL matching result is eitherMatchedorUnmatched. If the matching result isUnmatched, which of the following are possible causes?
Answer: A,B,D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
When a packet is checked against anAccess Control List (ACL), it is processed based on rule matches.
"Unmatched" scenariosoccur if:
A: TRUE# The packetdoes not match any ACL rule.
C: TRUE#No ACL is configured, so there are no rules to match.
D: TRUE#An empty ACL exists, meaning no rules are defined.
B is incorrectbecauseif the packet matches a deny rule, it is "matched" and explicitly dropped, not
"unmatched".
#Reference:Huawei HCIA-Datacom Study Guide, ACL Rule Matching and Processing Logic.
NEW QUESTION # 66
The routing attributes of the three routing entries are as shown in the figure. Assume that the next hop of the three routing entries is reachable.
When these three routing entries arrive at the BGP router in order, which routing entry will be preferred by BGP in the end by default?
Answer: B
NEW QUESTION # 67
When receiving a packet that does not match any session table entry, the firewall discards the packet to prevent external attacks and ensure internal information security.
Answer: B
Explanation:
When a Huawei firewall receives a packet that does not match any existing session table entry, it discards the packet. This is part of the default firewall policy, which ensures that unrecognized traffic is treated as a potential security risk and blocked. This behavior is vital for preventing unauthorized access and mitigating external attacks. The feature aligns with Huawei's default security strategies as detailed in their firewall operation manuals .
NEW QUESTION # 68
Regarding the ABR in OSPF, which is the wrong description?
Answer: A
NEW QUESTION # 69
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