Huawei H12-261-ENU 問題集

質問 1：
The Type 5 LSA in OSPF is used to pass external routes. Which of the following statement about the five Type 5 LSA is wrong?
A. The router in the same area as the ASBR can calculate the external route through the intra-area LSA and the Type 5 LSA.
B. Configure the corresponding policies on the ABR and ASBR to filter the Type 5 LSA.
C. The Type 5 LSA is advertised by the ASBR and flooded in the OSPF network in the non-Stub/NSSA area.
D. The FA address is included in the Type 5 LSA, and the FA address is 0.0.0.0, but has no practical effect as a reservation.
正解：D

質問 2：
Which of the following statement about IPSec VPN is true? (Multiple choice)
A. two routers establish IPSec VPN through aggressive mode, then a minimum of interaction 4 packets between the two devices build tunnel
B. Two routers establish an IPSec VPN through the master mode. Starting from the fifth packet (inclusive), the payload data is often encrypted.
C. Savage mode can support NAT traversal, while main mode does not support NAT traversal
D. Between two routers, an OSPF neighbor relationship can be established through an IPSec VPN tunnel, and intranet routes can be exchanged.
正解：A,B

質問 3：
To enable the routers at both ends of the IPv6 over IPv4 manual tunnel to exchange routing information, you can enable OSPFv3 on the tunnel. OSPFv3 can form a neighbor relationship and use the tunnel interface as a P2P tunnel interface.
A. False
B. True
正解：B

質問 4：
Huawei's two switches, SWA and SWB, are connected through seven Ethernet ports and are configured with static link aggregation. The corresponding ports on the switch SW are Ethernet 1/0/2, Ethernet 1/0/3, Ethernet 1/0/4, and Ethernet 1/0/5, Ethernet 1/0/6, and Ethernet 1/0/7. The configuration mode is configured in the order of the ports. If the switch SWA and SWB support only 6 ports in each aggregation group.
A. In the case that the configurations of the ports are the same, the SWA randomly selects one of the seven ports as the aggregation group Unselected port.
B. Ethernet1/0/1 Unselected port when the configurations of the ports are the same
C. Ethernet1/0/7 Unselected port with consistent port configuration
D. Ethernet1/0/6 Unselected port with consistent port configuration
正解：C

質問 5：
Regarding the cross-domain VPN-OptionB scheme, which of the following description is wrong?
A. The cross-domain VPN-Option B scheme is not limited by the number of interconnected links between ASBRs.
B. During the packet forwarding process, exchange the private network LSPs of the VPN on the two ASBRs.
C. An IP-EBGP neighbor relationship needs to be established between the two ASBRs.
D. Exchange the outer label of the VPNv4 route between the two ASBRs.
正解：D

質問 6：
WRED is configured on the newly deployed router HW. Which of the following description of the WRED feature is correct? (Multiple choice)
A. Low bandwidth traffic is easier to drop than high bandwidth traffic
B. When the flow exceeds the minimum threshold, WRED begins to discard all ingress traffic (tail drop)
C. WRED can set different discard thresholds and packet loss rates for packets of different priorities.
D. Avoid global synchronization by selectively dropping multiple TCP streams
正解：C,D

質問 7：
Router A has a destination network segment of 10.0.0.1/32 IP routing, and the outgoing interface is Gigabitethernet0/0/1. Now add the following configuration acl number 2000 rule 10 permit source 10. 0.1.1 0 traffic classifier test if-match acl 2000 traffic behavior test remark dscp cs3 traffic policy test classifier test behavior test interface Gigabitethernet0/0/1 ip address10.0.12.1255.255 .255.0 traffic-policy test outbound assumes that Router A received a packet with a destination IP of 10.0.0.1. The following statements which are correct? (Multiple Choice)
A. If the source IP address of the packet is 10.0.0.2, it cannot be forwarded.
B. If the source IP address of the packet is 10.0.0.2, it can be forwarded while the DSCP field remains unchanged.
C. If the source IP address of the packet is 10.0.0.1, it can be forwarded and the DSCP field is marked as cS3.
D. If the source IP address of the packet is 10.0.0.2, it can be forwarded and the DSCP field is marked as CS3.
正解：B,C

質問 8：
As shown in the figure below, which routes will R2 learn?

A. R2 can learn the two routes 10.1.2.0/24 and 10.1.3.0/24.
B. R2 can learn the 10.1.1.0/24 route.
C. R2 can learn all the routes of R1.
D. R2 can receive the LSP of R1 but cannot join the routing table.
正解：C

質問 9：
The following topology and configuration are available. Which of the following statement is correct? (Multiple choice)

A. There is a route with the destination network segment being 10.6.3.3/32 on R1.
B. There is no route with the destination network segment being 10.0.2.2/32 on R1.
C. There is no route with the destination network segment being 10.6.3.3/32 on R1.
D. There is a route with the destination network segment being 10.0.2.2/32 on R1.
正解：C,D