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NEW QUESTION # 13
iFIT is an in-band flow-measurement technology that delivers highly precise performance measurements based on real traffic. Which functions can it provide when used with telemetry, a second-level data-collection technology, and NCE, an integrated management and control platform?
Select all that apply.
Answer: B,C,D
Explanation:
Exact Extract - Huawei Training Material (Automatic SDN Network O & M, p.52):
"iFIT is a performance detection method for in-service traffic detection. It provides high-precision real-time traffic detection and works with the Telemetry second-level data collection to implement real-time visualization of network quality, proactive monitoring, and quick fault demarcation and locating." Huawei Reference Verification:
Huawei's Automatic SDN O & M module characterizes iFIT as in-service flow performance detection using high-precision real-traffic measurement and second-level telemetry. It specifically lists real-time visualization of network quality, proactive monitoring, and quick fault demarcation and location. iFIT-enabled forwarding hardware identifies measured flows, counts packets and records time information to calculate delay and loss.
iMaster NCE-IP correlates these records across network nodes to present service-level performance and identify the faulty section. Network redundancy protection is a separate function associated with protection mechanisms rather than measurement. Accordingly B, C and D are correct.
Technical Deep Dive:
B, C and D are correct. iFIT works on real production flows rather than relying entirely on synthetic probing, which may not follow the same forwarding path as customer traffic. Ingress and downstream measurement points record packet counts and timestamps. Comparing samples across hops supports fault demarcation, while telemetry sends near-real-time records to iMaster NCE-IP for SLA visualization and proactive abnormality detection. Packet-loss rate is calculated as (Tx-Rx)/Tx, using corresponding observation windows and matched flows. Supported forwarding NP/ASIC functions implement flow identification and statistical operations at high throughput. The controller can use observed packet loss, delay or jitter to inform tunnel optimization or self-healing workflows. But iFIT itself does not provide the alternate link, replicated forwarding state or local FRR operation necessary for redundancy. Mechanisms such as TI-LFA, VPN FRR or hot standby provide protection; iFIT supplies the visibility required to detect and localize degradation.
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NEW QUESTION # 14
OSPF NSR is implemented by synchronizing protocol running data from the active main control board to the standby main control board in real time. Which of the following data can be synchronized from the active main control board to the standby main control board in real time?
Select all that apply.
Answer: B,D
Explanation:
Huawei Reference Verification:
Huawei OSPF Non-Stop Routing protects protocol continuity during active/standby control-board switchover by synchronizing essential routing-process source state. The active main control board backs up OSPF configuration and dynamic link-state data, including LSDB contents, to its standby counterpart. Derived data structures such as SPF trees and route-calculation outputs can be reconstructed from that source state. This question focuses on OSPF-specific protocol-state synchronization rather than all system-level forwarding- state replication. Accordingly configuration data and LSDB are the relevant selections, C and D.
Technical Deep Dive:
C and D are correct. An active router control board handles OSPF Hello and LSA processing, adjacency state, LSDB maintenance and SPF computation. Its standby board requires sufficient synchronized information to continue OSPF operation after switchover without forcing neighbors through a complete adjacency reset.
Configuration describes process, interface, area and protocol parameters; the LSDB describes the topology.
The shortest-path tree is computed by running SPF on LSDB contents, and routing-table entries are derived from routing decisions. These derived structures can be recomputed rather than synchronized as the OSPF NSR source-state categories asked about. NSR differs from Graceful Restart, which typically relies on neighboring routers' helper behavior. Meanwhile forwarding line cards continue using installed FIB entries where the platform supports uninterrupted forwarding. System-level NSR may protect broader forwarding state, but that does not change the two OSPF protocol-data answers.
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NEW QUESTION # 15
The figure illustrates the fixed-broadband cloudification acceleration scenario of the intelligent cloud- network. Which statements about this network are incorrect?
Exhibit 16.1 - Original topology/configuration figure
Select all that apply.
Answer: B,D
Explanation:
Huawei Reference Verification:
Huawei's SRv6 network design separates the public transport plane, which must provide locator and loopback reachability, from VPN service-route advertisement. IS-ISv6 can flood infrastructure IPv6 routes and the relevant SRv6 locator reachability among metro and aggregation routers. BGP over the inter-AS service relationship distributes the VPN routes. An EBGP VPN session is not the public-plane IGP mechanism intended for locator distribution in the diagram, and IS-ISv6 does not substitute for the private-plane BGP advertisement of VPN routes and service SIDs. Accordingly C and D are the incorrect statements.
Technical Deep Dive:
C and D are incorrect. In the shown metro/cloud interconnection the public network plane supplies transport reachability for packet forwarding, while the private plane distributes customer VPN information. IS-ISv6 carries IPv6 infrastructure reachability such as loopback and SRv6 locator prefixes, allowing transit forwarding toward SID locators. BGP distributes VPN routes and service-related SID attributes. Thus A correctly describes underlay IS-ISv6, and B describes the intended EBGP-based service route exchange. C incorrectly assigns the locator-distribution role to public-plane EBGP for this design, and D incorrectly assigns private VPN SID distribution to the IGP. A locator is the routable portion of an SRv6 SID; the function encodes service behavior such as End.DT4/End.DT6. Forwarding ASICs use IPv6 FIB entries to carry packets toward locators, while egress PE SID processing selects the VPN behavior.
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NEW QUESTION # 16
In the network shown, RT4 and RT5 function as ASBRs and import IS-IS routes into OSPF. Only OSPF is used for interworking between RT4 and RT5. The link costs are shown in the figure. The key configurations of RT4 and RT5 are as follows:
Exhibit 36.1 - Original topology/configuration figure
Exhibit 36.2 - Original topology/configuration figure
Answer: A
Explanation:
Huawei Reference Verification:
Huawei OSPF External Type 2 route selection considers the external metric first; when E2 metrics are equal, internal cost toward the advertising ASBR serves as an additional comparison. RT4 and RT5 import the IS-IS destination as OSPF Type 2 external routes with the explicitly configured external metric of 10. The illustrated OSPF paths to RT4 and RT5 have equal internal cost from RT1. Therefore RT1 installs two equal- cost forwarding paths to 6.6.6.6. The differing IS-IS link costs to RT6 do not override the imported OSPF Type 2 metric. Thus B is correct.
Technical Deep Dive:
B is correct. RT4 and RT5 are ASBRs because they inject routes learned in IS-IS into OSPF. Both use
`import-route isis 1 cost 10 type 2`. As a result the advertised E2 cost for 6.6.6.6 is 10 from either ASBR. RT1 can reach RT4 through RT2 and RT5 through RT3, and the illustrated internal OSPF costs for those alternatives are equal. The two paths therefore qualify for ECMP, unlike a single preferred next hop. The original IS-IS costs (20 on the RT4 side and 10 on RT5) are internal to the source routing domain; they are not the metric used after the explicit E2 import cost is assigned. Huawei commands `display ospf routing`,
`display ospf lsdb ase` and `display ip routing-table 6.6.6.6` help confirm the route type and next hops. ASIC forwarding can distribute traffic across installed ECMP entries.
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NEW QUESTION # 17
In the transport network shown, two-level RRs are deployed, and RTA has the directly connected network segment 10.1.1.0/30. Which of the following statements about the BGP deployment solution are incorrect?
Exhibit 28.1 - Original topology/configuration figure
Answer: C
Explanation:
Huawei Reference Verification:
Huawei's hierarchical BGP route-reflector deployment lets a lower-level RR be a client of an RR at a higher level, extending route distribution without requiring client-to-client full-mesh sessions. Redundant RRs serving the same cluster can use the same cluster ID. Ordinary edge clients can peer with their selected Level-
1 RRs and learn reflected routes without peering with one another. RRs on the same tier do not have to be configured as each other's route-reflector clients; non-client IBGP relationships or other hierarchy rules can supply the required connectivity. Therefore the assertion that same-level RRs must be each other's clients is incorrect.
Technical Deep Dive:
C is incorrect. In the illustrated two-level design, RTA and RTB each peer with the redundant Level-1 RRs; Level-2 RRs operate as clients of the Level-1 layer to receive the needed routes. A direct IBGP adjacency between RTA and RTB is not mandatory because both can learn eligible routes through their RRs. RRs in a shared redundancy cluster may use the same cluster identifier for consistent loop detection, but this is not a universal rule across unrelated clusters. Route-reflection client relationships are directional configuration properties: not all RRs at one level need to treat their peer RRs as clients. RRs may establish ordinary non- client peering where appropriate. The BGP Originator ID and Cluster List attributes prevent reflection loops as routes pass through the hierarchy. Route deployment must also consider route visibility and path diversity; making every same-tier RR a mutual client is neither necessary nor a normal scaling principle.
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NEW QUESTION # 18
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