H12-821_V1.0 Examcollection Vce & Standard H12-821_V1.0 Answers

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Quiz 2026 H12-821_V1.0: HCIP-Datacom-Core Technology V1.0 Perfect Examcollection Vce

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Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q132-Q137):

NEW QUESTION # 132
Two routers running IS-IS can establish an adjacency relationship only if the time interval between IlH sending is the same.

A. TRUE
B. FALSE

Answer: B

NEW QUESTION # 133
On the OSPF network shown in the figure, R1, R2, and R3 run OSPF, and R1 advertises four VPN routes to OSPF. A filter-policy needs to achieve the following goal: R1's and R3's routing tables contain the routes to
192.168.3.0/24, but R2's routing table does not. Which of the following filter-policies cannot meet this requirement?

A. A filter-policy on R1 for filtering the imported routes to be advertised
B. A filter-policy on R2 for filtering received routes
C. A filter-policy on R1 for filtering the routes to be imported
D. A filter-policy on R2 for filtering the routes to be advertised

Answer: C

Explanation:
Goal Analysis:
Requirement:
The route to 192.168.3.0/24 must exist in R1's and R3's routing tables.
The route must not exist in R2's routing table.
This requires filtering to ensure the route is either:
Blocked on R2's routing table (via filtering on R2), or
Blocked before it is advertised to R2.
Analysis of Each Option:
Option A (Filter-policy on R2 for filtering received routes):
Applying a filter-policy on R2 to filter received routes will block the route from entering R2's routing table but still allow it to propagate to R3.
This meets the requirement.
Option B (Filter-policy on R2 for filtering the routes to be advertised):
Blocking the advertisement of routes from R2 to other routers does not affect the routes received by R2 itself.
This does not meet the requirement but does not affect the propagation to R3.
This is valid if the received route is blocked.
Option C (Filter-policy on R1 for filtering the routes to be imported):
If the route is filtered on R1 during the import phase, the route will not exist in R1's routing table and thus cannot be advertised to either R2 or R3.
This fails to meet the requirement because the route must exist in R1's and R3's routing tables.
Option D (Filter-policy on R1 for filtering the imported routes to be advertised):
Filtering routes on R1 before advertising to R2 will prevent R2 from receiving the route but allow R1 to advertise the route to R3.
This meets the requirement.
Correct Option:
C (Filter-policy on R1 for filtering the routes to be imported): This will prevent the route from existing in both R1 and R3, violating the stated requirement.
References:
HCIA-Datacom Study Guide, Chapter: OSPF Route Filtering
Huawei OSPF Configuration and Filtering Methods

NEW QUESTION # 134
In the BGP protocol, which of the following BGP attributes can be used to mark routes with certain common characteristics so that other BGP routers can identify them?

A. Community
B. MED
C. AS-path
D. Origin

Answer: A

NEW QUESTION # 135
Which of the following descriptions of mirror ports are correct? (Multiple choice)

A. A traffic policy containing flow mirroring behavior is applied on the interface. The mirror port is a port connected to the monitoring device and is used to output the packets copied from the mirror port.
B. Port mirroring means that the device copies a packet passing through the mirrored port and transmits the packet to the designated observing end.
C. The implementation of the mirroring function requires cooperation with monitoring equipment. The monitoring equipment is mainly used to analyze the received mirroring messages.
D. Analyzing and monitoring port flow mirroring is a type of traffic behavior. When applied on a device, it is actually performed globally, in a VLAN or on a terminal.

Answer: B,C,D

NEW QUESTION # 136
When two routers exchange database information through DD messages, a master-slave relationship is first formed. The one with the larger DR Priority becomes the master router, and its master-slave bit is determined to be MS.

A. TRUE
B. FALSE

Answer: B

NEW QUESTION # 137
......

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