HCIE-Routing&Switching (Written) Exam H12-261-ENU Real Questions

1. Which of the following statements is true regarding OSPF adjacencies and link-state database synchronization?

2. 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?

3. ICMFV6 uses the type field to identify packet types. Based on values of the type field, ICMPv6 packets are classified into two types: error packets and information packets.

4. Which of the following scenarios can an AS-path-filter be used for? (Multiple Choice)

5. What are the common methods of learning routing information for BGP? (Multiple Choice)

6. When configuring Low Latency Queuing (LLQ), a bandwidth parameter is needed.

What does this parameter specify?

7. A DHCP server can allocate an IP address based on a host's MAC address or the port of access switch the host connect to.

8. According to configurations in the following figure, the two routers can establish a normal IS-IS neighbor relationship.

9. An IPv6 device with the address of FC00::1 connects to the network and captures the following data packet.

What is function of the data packet?

10. What are the key components of NAC? (Multiple Choice)

11. Which of the following statements is true about the port mirroring on Huawei devices?

12. Which of the following route selection tools is BGP-specific?

13. Which access control modes are provided by NAC? (Multiple Choice)

14. An AS-path-filter uses the regular expression ^[0-9]+$ to indicate all as-path attributes.

15. HW is an ISP providing MPLS services according to RFC 4364 standards. By using a unique route distinguisher per VRF, this L3 VPN service provides the ability for which of the following?

16. A router running RIP Version 2 has two interfaces and has received RIP routing updates from its neighbors on both interfaces. The first interface receives a routing update for network 10.1.1.0/24 with a metric of 3, the second interface also receives a routing update for network 10.1.1.0/24 with a metric of 5.

Which interface(s) will the router select to forward packets to network 10.1.1.0/24?

17. On an MPLS VPN network, some devices maintain VPN routing information and private network label information to ensure correct forwarding of VPN packets. These devices must run not only routing protocols, but also MP-BGP and MPLS protocols.

What type are these devices?

18. Which of the following statements are true about BGP4+ configurations? (Multiple Choice)

19. Routers HW1 and HW2 are IP Multicast routers. These routers use (S, G) entries for multicast packet forwarding.

Which of the following address types are used in the "S" entry?

20. Devices on the HW Multicast network must send source specific multicast (SSM) messages.

What range of IP multicast addresses are reserved by the IAN A for source-specific multicast?

21. When you perform troubleshooting on a LAN deployed with Huawei devices, you find that there is a large number of unicast frames with unknown MAC addresses.

What is the biggest risk for the switches?

22. Serial 0 on a router is an OSPF network in area 1. You configure serial 0 as silent.

What is the effect of this configuration change?

23. Which of the following is true about Class based Weighted Fair Queuing (CBWFQ)?

24. In IPTV services, video streams are transmitted in multicast mode. When a user changes channels, the multicast traffic of the original TV program is still sent for a certain period. This situation worsens when the user frequently changes channels.

Which protocol is recommended to reduce the useless traffic?

25. Which of the following are valid IPv6 Address Types? (Multiple Choice)

26. If a router receives a BGP route carrying the no-export community attribute, which of the following actions does the router take?

27. The IS-IS authentication functions include interface authentication, area authentication, and routing domain authentication.

28. What is the destination IP address of routing update packets sent by RIPv2?

29. What are the advantages of WRED? (Multiple Choice)

30. Which of the following are differences between PIM-SM and PIM-DM? (Multiple Choice)