Huawei H12-261-ENU 問題集

質問 1：
We can use basic community-filters or advanced community-filters to filter BGP routes.
Which of the following tools make the advanced community-filter more flexible than the basic community- filters?
A. AS-path-filter
B. IP-prefix
C. Regular expression
D. ACL
正解：C

質問 2：
Which of the following statements about the IS-IS route summary is correct?
A. Route aggregation only takes effect on LeveI-1 router
B. You can configure route aggregation and take effect on all types of routers.
C. Route aggregation only takes effect on the LeveI-1-2 router
D. Route summarization only takes effect on the Leve-2 router
正解：B

質問 3：
Regarding the Stub area and the NSSA area of the OSPF protocol, which of the following statement is incorrect?
A. Type7 LSA is not allowed in the Stub area, and Type 7 LSA is allowed in the NSSA area.
B. Type 5 LSA is not allowed in the Stub area, and Type 5 LSA is allowed in the NSSA area.
C. Both the Stub area and the NSSA area can inject Type 3 LSAs.
D. Both the Stub area and the NSSA area are not allowed to inject Type 4 LSA.
正解：B

質問 4：
Cross-device link aggregation enables data stream transmission and mutual backup of stack member switches. However, because of the limited bandwidth of stack cables between stack devices, which of the following methods can improve forwarding efficiency?
A. Connect stack devices through stack cards
B. Enable stack multi-master check function
C. Enable traffic local priority forwarding
D. Configure stack system MAC address switching
正解：C

質問 5：
The following topology is available, and based on this analysis, which of the following statement is correct?

A. Because R2 does route aggregation, only the routing entry of 10.0.0.0/16 exists in the IP routing table of R1.
B. There are routing entries for 10.0.2.2/32 and 10.0.3.3/32 in the IP routing table of R1.
C. The routing entries of 10.3.3.3/32 and 10.0.0.0/16 exist in the IP routing table of R1.
D. There are routing entries of 10.0.2.2/32 and 10.0.0.0/16 in the IP routing table of R1.
正解：C

質問 6：
When judging the old and new LSA, the serial number parameter and the age parameter will be used. Which of the following statements about the two parameters is correct?
A. When the router receives an LSA age is 360s, the LSA is unavailable.
B. If the serial number of the LSA reaches the end value of 0x7FFF, the current router advertises the age is lsa of 3600s.
C. When the router receives two LSAs, the serial number is the same, the checksum is the same, and the smaller the age, the better.
D. Both the serial number and the age parameter can judge the LSA is old or new, and the router preferentially compares the sequence parameters, the larger the better.
正解：D

質問 7：
Router-LSA of OSPFv3 is generated by each router. It describes the interface address and cost of each link of the router, and also contains the router ID of the neighboring router.
A. False
B. True
正解：A

質問 8：
The SWA and SWB are connected by two physical Ethernet links.
The SWA has the following interface configurations:
[SWA]interface GigabitEthernet 1/0/1
[SWA-GigabitEthernet 1/0/1] port link-type trunk
[SWA-GigabitEthernet 1/0/1] port trunk allow-pass vlan 1 0 100
[SWA]interface GigabitEthernet 1/0/2
[SWA-GigabitEthernet 1/0/2] port link-type trunk
[SWA-GigabitEthernet 1/0/2] port trunk allow-pass vlan 1 10
These two links are aggregated
Assume that the configuration on the SMB is correct.
Which of the following statements are correct in view of this information? (Multiple Choice)
A. After the link aggregation is configured on the SWA and the SWB, if enabled MSTP, GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 will enter the Forwarding state in MSTP
B. GigabitEthernet 1/0/1 and Gigabitethernet 1/0/2 can be added to the same LAG without changing the current configuration.
C. GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 cannot be added to the same LAG because the allowed VLANs are different.
D. GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 can be added to the same LAG only after GigabitEthernet 1/0/2 is configured. Change to the same as GigabitEthernet1/0/1
正解：C,D

質問 9：
The router HW1 exists as an MPLS LSR router in the network of the operator HW. The router receives a packet carrying a label, but the label entry does not exist in its LFIB.
So how does the router handle the message?
A. Router HW1 will strip the label and find the IP destination address of the FIB.
B. Router HW1 will forward the message using the default label.
C. Router HW1 uses LDP to create an LSP and creates a new path for the label carried in the packet in the LFIB.
D. Router HW1 will discard the message.
正解：D