Huawei HCIP-Datacom - H12-831-ENU Exam Practice Test

Cutover rollback refers to rolling back the current changes to the state before execution.

Routing protocols can detect failures through Hello packets, so BFD is not required.

View the running configuration in memory through display current-configuration.

As shown in the figure, Site1 and Site2 need to achieve mutual access through the operator's BGP/MPLS IPVPN. It is known that the public network tunnel between PE1 and PE2 has been established (the label information is shown in the figure), and PE1 has advertised the route of network segment 192.168.1.0/24 in Site1 to PE2 through the MPLS BGP neighbor relationship, and the route learning is normal.

When grabbing between P and PE1, when Site2 accesses the 192.168.1.0/24 data of Site1, what should be the outermost label?

QinQ technology is a technology to expand the VLAN space. It can achieve the function of expanding the VLAN space by adding a layer of 802.1Q Tag on the basis of the 802.1Q tag message. Which of the following statements about QinQ is false?

In the alarm management function of eSight, its alarm levels are divided into the following four types:

Which of the following commands can be used to view information about BGP VPNV4 routes and BGP private network routes on PE?

Traditional BGP-4 can only manage IPV4 unicast routing information. MP-BGP extends BGP-4 in order to provide support for multiple network layer protocols. The feature that MP-BGP supports for IPv6 unicast networks is called BGP4+, and BGP4+ carries the next hop address information of the route through the Next Hop attribute.

In BGP4+, what is the content of the next hop network address field carried by the AP_REACH_NLRI attribute in the Update message?

The Tos field is used to mark the QOS in the IP packet, and the first 6 bits of the Tos field are used to mark the DSCP.