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Huawei H12-831_V1.0 certification exam is ideal for network administrators, network engineers, and other IT professionals who are responsible for managing and maintaining complex enterprise-level networks. H12-831_V1.0-ENU exam is also suitable for individuals who are seeking to enhance their skills in advanced routing and switching technologies and want to pursue a career in the networking field. HCIP-Datacom-Advanced Routing & Switching Technology V1.0 certification exam is based on a comprehensive set of learning objectives that cover the latest Huawei technologies and best practices in network design and implementation. Successful candidates will be able to demonstrate their proficiency in advanced routing and switching technologies and can differentiate themselves in the job market by earning this valuable certification.
NEW QUESTION # 133
When executing a cutover project, network engineers can perform remote operations at the customer's network maintenance center and guide on-site construction personnel to complete hardware-related operations, such as powering on equipment and connecting equipment.
- A. True
- B. False
Answer: A
NEW QUESTION # 134
Network administrators can run the clock timezone command to set the time zone of a device. If two network devices have different time zone settings, they cannot establish a neighbor relationship using a dynamic routing protocol.
Options:
- A. FALSE
- B. TRUE
Answer: A
Explanation:
Comprehensive and Detailed In-Depth Explanation:
* The clock timezone command only affects the displayed time on the device and does not impact routing protocol operations.
* Dynamic routing protocols such as OSPF, IS-IS, BGP, and EIGRP rely on timers, authentication, and correct network configurations, but they do not require the same time zone settings.
* Potential issues with different time zones:# Log timestamps may be inconsistent, making troubleshooting harder.# Time-sensitive features like NTP synchronization might be affected.# But different time zones will not prevent dynamic routing neighbor relationships.
# Reference: HCIP-Datacom Advanced Routing & Switching Technology - System Time Configuration
& Routing Protocols
NEW QUESTION # 135
BGP authentication can prevent illegal routers from establishing neighbors with BGP routers. BGP authentication can be divided into ID5 authentication and Keychain authentication. Which of the followingBGP packets will carryBGPKeychain authentication information?
- A. Open
- B. Keepalive
- C. Update
- D. Notification
Answer: A,B
NEW QUESTION # 136
The business route of an enterprise is transmitted in the network, and part of the configuration of PE1 and PE2 is shown in the figure. At this time, CE1 adds a new business network segment and announces it to Area1 of OSPF 10.
In this scenario, which type of LSA will CE2 receive, which will contain the service network segment newly announced by CE1?
- A. False
- B. True
Answer: A
NEW QUESTION # 137
When troubleshooting dual-master faults in a VRRP backup group, which of the following statements is wrong?
- A. Need to check whether the VRRP group ID on the interface is the same
- B. There is no need to check whether the switch port that transmits the VRRP advertisement message is in the same VLAN
- C. Need to check whether the interface IP address is in the same network segment
- D. Need to check whether the virtual IP addresses of the VRRP group are the same
Answer: B
NEW QUESTION # 138
(Connection question) Please match the command with the realized function.
Answer:
Explanation:
NEW QUESTION # 139
Although adjacency will be formed between routers of the same level on the same network segment of IS-IS in the broadcast network, that is, adjacency will be formed between all non-DIS routers, but in the implementation of IS-IS and BFD linkage, BFD sessions are only established between DIS and DIS, and BFD sessions are not started between non-DIS.
- A. False
- B. True
Answer: A
NEW QUESTION # 140
In the figure, packets are forwarded based on MPLS on the network.
When PE2 receives a packet from P2, what is the label value carried in the packet?
Options:
- A. The label value is 3.
- B. There is no label.
- C. The label values are 3 and 1033.
- D. The label value is 1033.
Answer: B
Explanation:
Comprehensive and Detailed In-Depth Explanation:
1. Understanding MPLS Label Switching
MPLS (Multiprotocol Label Switching) operates by adding labels to packets to enable fast switching across an MPLS domain.
* Labels are swapped at each router (LSR - Label Switch Router) based on the LFIB (Label Forwarding Information Base).
* When an MPLS packet reaches a router, it checks the incoming label and swaps it with an outgoing label as per its label forwarding table.
* The label value "3" is the implicit null label, which is used for PHP (Penultimate Hop Popping).
2. Analyzing the MPLS Label Flow in the Figure
* At PE1: The packet enters the MPLS domain and is labeled with 1033.
* At P1: P1 forwards the packet based on label 1033.
* At P2:
* P2 receives label 1033 and swaps it with label 3 (as per the figure).
* Label 3 (implicit null) means that the label is removed before reaching PE2 (PHP - Penultimate Hop Popping).
* This ensures that PE2 receives a pure IP packet without an MPLS label.
3. Evaluating Each Answer Option
* Option A: "The label value is 3." # Incorrect.
* Label 3 (implicit null) is not actually sent to PE2.
* Instead, P2 removes the label before sending the packet to PE2.
* Option B: "There is no label." # Correct.
* Since P2 performs PHP (Penultimate Hop Popping), the label is removed, and PE2 receives only an IP packet.
* Option C: "The label value is 1033." # Incorrect.
* Label 1033 was used earlier in the MPLS path but was swapped out before reaching PE2.
* Option D: "The label values are 3 and 1033." # Incorrect.
* Only one label is present at a time.
* Label 1033 was swapped for label 3, but label 3 was removed before reaching PE2.
Final Answer:
HCIP-Datacom-Advanced Routing & Switching Technology References:
* MPLS Label Forwarding Mechanism
* Penultimate Hop Popping (PHP) and Implicit Null Label (3)
* MPLS Label Swapping and Label Forwarding Table (LFIB)
NEW QUESTION # 141
A BGP router receives a BGP route whose AS_Path attribute is "100200300". If the router wants to reject this route, which of the following as-path-filters can it use? (Multiple choice)
- A. ip as-path-filter l deny 200
- B. ip as-path-filter l deny 00$
- C. ip as-path-filter l deny.*
- D. ip as-path-filter l deny 00.*30
Answer: B,C
NEW QUESTION # 142
Network maintenance can be divided into two categories: daily maintenance and troubleshooting.
If the maintenance personnel have a high level of technical skills, they can maintain the network based on experience without following operating specifications.
- A. False
- B. True
Answer: A
NEW QUESTION # 143
In the topology shown in the figure, the entire network runsOSPFv3agreement inNoIn the case of attracting external routes,R1which type ofLAS?
- A. Inter-Area-Router LSA
- B. Link-LSA
- C. Intra-Area-Prefix-LSA
- D. Inter-Area-Prefix-LSA
Answer: A
NEW QUESTION # 144
In a certain MPLS network, the LSP information of R1 and R3 is shown in the figure. At this time, the administrator enters the command ping -a 1.1.1.1 3.3.3.3 on R1. Which of the following descriptions of this scenario is correct?
- A. The Echo Request message received by R2 carries label 1025, and the Echo Reply message received by R2 carries label 1024
- B. The Echo Request message received by R2 does not carry a label, and the Echo Reply message received by R2 does not carry a label either.
- C. The Echo Request message received by R2 carries label 1025, while the Echo Reply message received by R2 does not carry a label.
- D. The Echo Request message received by R2 does not carry a label, and the Echo Reply message received by R2 carries label 1024
Answer: A
NEW QUESTION # 145
Regarding the MPLS forwarding process, which description of the ingress node forwarding is correct? (Multiple choice)
- A. After receiving the data packet, the Ingress node will first check the ILM table to find the Tunnel ID
- B. Press the obtained label in the IP packet, and process EXP according to the QoS policy, and process L at the same time, and then send the encapsulated MPLS packet to the next hop
- C. Check the NHLFE entry, you can get the outgoing interface, next hop, outgoing label, and label operation type. The label operation type is Push
- D. Find the corresponding NHLFE entry according to the Tunnel ID of the ILM table, and associate the LFlB entry with the NHLFE entry
Answer: B,C
NEW QUESTION # 146
In a BGP/MPLS IP VPN network, PE devices will update VPN routes through Update messages.
Which of the following information will be included in the Update message? (Multiple choice)
- A. Next hop address
- B. Public network label value
- C. Export RT value
- D. VPNv4 routing prefix
Answer: A,C,D
NEW QUESTION # 147
Does the role of Link-LSA in OSPFv3 not include?
- A. To the other road on the link Tiandikou noon-
- B. Advertise to other routers on the link the originatingNetwork-LSAOptions set in
- C. Advertise the link-local address of this interface to other routers on the link
- D. Advertise this router's interface to other routers on the linkID
Answer: A
NEW QUESTION # 148
Which of the following descriptions about MPLS header TTL are correct? (Multiple choice)
- A. In the case of banning Bay TTL, tracert can see the LSR of the MPLS domain that it passes through
- B. Can prevent infinite loop forwarding of messages
- C. The processing method of copying the IP TTL value hides the LSR of the MPLS domain and plays a certain security role
- D. There are two ways to correct MPLST and TTL. One is to copy the TTL value of the MPLS header when an IP packet enters the MPLS network. The other is to set the TTL of the MPLS header to 255 at the ingress LER.
Answer: B,D
NEW QUESTION # 149
About the site in the BGPIMPLS IP VPN network architecture. Which of the following descriptions is correct?
- A. site is a groupIPsystem, a network of hosts cannot be called a site
- B. in any case, belong to the sameVPNDifferent sites on the
- C. through the sameCETerminals connected to the operator's network may belong to different sites(MCE)
- D. The two geographically separated networks must belong to different sites
Answer: C
NEW QUESTION # 150
The network logic architecture of a cutover project is shown in the figure. The purpose of the cutover is to expand a network device R4 between R2 and R3. The router IDs of R1, R2, and R3 are 10.0.1.1, 10.0.2.2, and 10.0.3.3 respectively. The OSPF protocol runs between network devices.
After the physical network is connected, when performing the cutover operation, the network engineer first mistakenly imports the backup configuration of R3 into R4. Based on this scenario, which of the following descriptions are correct? (Multiple choice)
- A. In R2's LSDB, you can see the LSA generated by R4
- B. In R2's LSDB, you can see the LSA generated by R3
- C. In R1's LSDB, you can see the LSA generated by R3
- D. In R3's LSDB, you can see the LSA generated by R4.
Answer: A,C
NEW QUESTION # 151
In a multi-level RR scenario, a large number of second-level RR are connected to the first-level RR, which may cause the BGP routing table of the first-level RR to overflow. What method can be used to reduce the risk of overflow of the BGP routing table of the first-level RR?
- A. Route aggregation
- B. ORF
- C. Routing control
- D. Set the same Cluster-lD
Answer: A
NEW QUESTION # 152
The routing attributes of the three routing entries are shown in the figure. Assuming that the next hop of the three routing entries are all reachable, when the three routing entries arrive at the BP router in sequence, by default, BGP will finally select one route entry?
- A. Route B
- B. Route C
- C. Route A
Answer: C
NEW QUESTION # 153
Regarding the role of ping and tracert, which of the following statements is correct?
- A. Ping verifies the reachability from the local end to the opposite end, it does not mean that the opposite end is reachable from the local end
- B. Ping detects the two-way reachability between the correct end and the one-way icmp echo request packet
- C. Tracert must be able to trace every hop IP address from source to destination
- D. Tracert has the same function as ping, but the name is different
Answer: A
NEW QUESTION # 154
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Huawei H12-831_V1.0 Certification Exam is a challenging exam, and it requires candidates to have a thorough understanding of network design, configuration, and troubleshooting. Candidates must also have a good understanding of network security and be able to implement security measures to protect the network from threats.
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