H12-831

H12-831 practice questions, page 18 of 24, with answer review and explanations.

Question 86

What is the meaning of the display current-configuration I include vlan command?

  1. View the physical interface information bound to each VLAN
  2. Check which VLANs are currently created
  3. View the IP address of the VLANIF interface
  4. View all configurations that contain the "VLAN" keyword

Question 87

Regarding the BGPI MPLS IPVPN network architecture, which of the following descriptions is wrong?

  1. The P device only needs to have basic MPLS forwarding capabilities and does not maintain VPN related information
  2. Sites can visit each other through VPN, and a site can only belong to 1 VPN
  3. Under normal circumstances, CE equipment does not perceive the existence of VPN, and CE equipment does not need to support MPLS, MP-BGP, etc.
  4. The BGP/MPLS IP VPN network architecture consists of three parts: CE (Customer Edge), PE (ProviderEdge), and P (Provider). PE and P are operator equipment, and CE is BGP/MPLS IPVPN user equipment.

Question 88

Regarding sham link, which of the following description is wrong?

  1. The sham link is a link between two VPN instances. Each VPN instance must have an endpoint address of the sham link, which must be a Loopback with a 32-bit mask in the VPN address space on the PE router. interface address
  2. In order to forward the VPN flow through the MPLS backbone network, the routing cost of the sham link should be less than the OSPF routing cost of the backdoor road
  3. The endpoint address of the sham link is advertised as a VPhv4 address by BGP. Routes that have passed sam1ik can also be imported into BGP in the form of VPNv4 routes
  4. The sham link can be configured in any area and needs to be configured manually, and there must be a route to the sham link destination address (the sham link endpoint address of the peer PE) in the local VPN instance

Question 89

OSPF is deployed in a small and medium-sized network. When checking the routing table of a certain device, it is found that there are only direct routes. Which operation is unlikely to cause the fault?

  1. Routing protocol configuration error
  2. The routing policy is incorrectly configured
  3. Port address configuration problem
  4. The configured user authority is too low

Question 90

LDP messages are exchanged between LSRs running the LDP protocol. LDP messages can be divided into four types according to their functions. Which of the following is not an LDP message type?

  1. Discovery
  2. Announcement
  3. Conversation message
  4. Label exchange messages