H12-261_V3.0-ENU HCIE-Routing & Switching V3.0 Real Dumps

Free HCIE-R&S H12-261_V3.0-ENU Practice Exam Q&As HCIE-Routing & Switching (Written) V3.0

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1. Which of the following advanced features does BGP EVPN support?

A. ARP broadcast suppression B. VRRP over VXLAN C. Multi-live gateway D. VXLAN Qos Answer: AC

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2. Which of the following statements about VXLAN messages is correct? (Multiple choice) A. The outer destination IP address is the IP address of the remote VTEP of the VXLAN tunnel.

B. The source UDP port number is 4789 C. Destination UDP port number is 4789 D. VNI has 24 bits and is used to distinguish VLAN segments.

Answer: ACD

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3. Which of the following statements about the BFD single-arm echo function are correct? (Multiple Choice) A. The BFD single-arm echo function must be configured with a local identifier and a remote identifier.

B. The default destination IP address of the BFD single-arm echo function protocol packet is 224.0.0.184.

C. BFD single-arm echo function is applicable to scenarios where one device supports BFD and the other device does not.

D. After the BFD single-arm echo function is enabled, the destination IP and source IP of the BFD packets are the same.

Answer: CD

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4. The following statements about the VRRP protocol which are correct?

A. Both VRRPv2 and VRRPv3 support authentication.

B. VRRPv3 does not support authentication, while VRRPv2 supports authentication.

C. VRRPv2 is only applicable to IPv4 networks, and VRRPv3 is only applicable to IPv6 networks.

D. The owner of the Mater IP address has VRRP priority of 255, so the priority range that can be configured is 0-254.

Answer: B

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5. Which of the following attacks are DoS (Denial of Service) attacks?

(Multiple Choice) A. Single packet attack B. Source IP address spoofing attack C. Man-in-the-middle attack D. Flood attack Answer: BD

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6. What improvements have been made to the IGMPv2 protocol compared to IGMPv1? (Multiple Choice) A. Added specific group query message B. Added off-group messages C. Added maximum response time field D. Added specific source group query messages Answer: ABC

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7. Which of the following statements are true about IPSec VPN? (Multiple Choice) A. Savage mode can support NAT traversal, while main mode does not support NAT traversal B. Two routers establish IPSec VPN through the main mode. Starting from the fifth packet (including), the payload data is often encrypted.

C. Two routers establish IPSec VPN through aggressive mode, then only two packets are exchanged between the two devices to establish a tunnel.

D. Two routers can establish OSPF neighbor relationships through IPSec VPN tunnels and exchange intranet routes.

Answer: BC

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8. For Layer 2 VPN technology, which of the following statements are correct? (Multiple Choice) A. VPLS is a widely used technology on the live network. It can provide Layer 3 packet transparent transmission and achieve multipoint access.

B. The VPLS configuration is highly complex. The Layer 2 network transparently transmits BUM packets.

C. BGP EVPN supports tenant isolation, multi-homing and broadcast suppression D. BGP EVPN solves the problem of MAC address drift and multitenancy that VPLS cannot support.

Answer: BCD

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9. In which of the following scenarios will send free ARP packets? (Multiple Choice) A. After the VRRP protocol master and backup role election is completed.

B. After the DHCP client receives the confirmation message sent by the server C When a new host configured with an IP address is connected to the network D When a host connected to the switch sends a Ping packets.

Answer: ABC

Free HCIE-R&S H12-261_V3.0-ENU Practice Exam From Passcert for Your Best Preparation

10. When you troubleshoot a LAN that has Huawei devices deployed, you find that there are many unicast frames with unknown source MAC addresses in the LAN. What is the greatest harm that many unknown source MAC address unicast frames will cause to the switch?

A. Consume available bandwidth B. Increase the power consumption of the power supply C. Occupy the memory of cached frames D. Consume available MAC address entries in the system E. Occupy TCAM entries Answer: D