Free Access Huawei.H31-161.v2022-05-30.q78 Practice Test (Page 8)

Question 31

Refer to the exhibit.

Eth0 and Eth1 on PE 3 are bound to VRF1 and VRF2, respectively. A valid static route 1.1.1.1/32 is imported to BGP domains from CE 1, CE 2, and CE 4, respectively. Which of the following statements are false?

A.CE 3 can learn route 1.1.1.1/32 on CE 4.

B.Local VRFs must use different RDs

C.CE 3 cannot learn route 1.1.1.1/32 on CE 1 because the RD of this route is the same as that of the VRF.

D.CE 3 cannot learn route 1.1.1.1/32 on CE 2 because the RD of this route is different from that of the VRF.

Question 32

Which of the following statements about the relationship between the SPE and the UPE are false?

A.When MP-IBGP is deployed between an SPE and UPEs, the SPE can function as the RR of these UPEs so that routes can be advertised between IBGP peers. It is not recommended that an SPE serving as the RR of UPEs still reflect routes between other PEs so that routes on UPEs can be reduced. A UPE and an SPE communicate through a physical interface, subinterface, or tunnel interface. When the tunnel interface is configured, only one MPLS network is allowed between them and labeled packets are transferred through tunnels. Their communication may fail if the MPLS network is replaced with an IP network.

B.The SPE has a large routing table, which provides excellent forwarding performance and access capability, whereas the UPE has a small routing table and poor forwarding performance, but occupies fewer interface resources.

C.The SPE manages and advertises VPN routes. It maintains all routes on the VPN it is connected to through UPEs, including routes of local and remote sites. The SPE, however, does not advertise routes of remote sites to the UPE, but only advertises the labeled default routes or aggregate routes of VPN instances.

D.The UPE provides access service for users. It maintains the routes of the VPN sites it is directly connected to and sometimes aggregates routes of remote VPN sites. In addition, a UPE allocates inner labels for routes of the sites directly connected to the UPE and advertises VPN routes with these labels to an SPE through MP-BGP.

E.The SPE and UPE are relative to each other. In a hierarchical PE structure, a PE on the upper layer is the SPE to PEs on the lower layer, and these lower-layer PEs are UPEs to the SPE. However, the hierarchical PE cannot coexist with common PEs on an MPLS network.

Question 33

As shown in the figure, the bearer network is deployed in full mesh mode. For example, RTA uses the physical interface ATM 1/0/0. The interface is devised into ATM 10/0.2 connect to RTC and RTD, respectively . The GigabiteEthernet 2/0/0 and GigabitEthernet 3/0/0 interface are used to set up a trunk as the VRRP heartbeat cable. The UMG work in active/standby mode. Media interface connected to RTA and RTB belong to VLAN 10. VRRP is enable at the VLAN interface RTA is the master router. The interface is configured as follows:

Which of the following RTA configurations are correct in VLAN 10?
A)

A.Option C

B.Option A

C.Option B

D.Option D

Question 34

Exhibit:

As shown in the figure, Super VLAN is enabled on SWA (a LAN switch). The Super VLAN configuration is as follows:

Which of the following specifics the time order in which the preceding debugging information is generated?

A.3--4--1--2

B.3--2--1--4

C.1--2--3--4

D.1--4--2--3

Question 35

Which of the following statements about control words in the L2VPN are true?

A.The control word can be used for packet padding For example, when the public network uses Ethernet
and the AC uses Peer-to-protocol (PPP), control words can be used to transfer and identify PPP packet
with a bytes.

B.The control word can be used to identically the packet sequence.

C.When SVC VLL is used, if PEs at two ends of a VC use different control words, the may not become
Up.

D.When Martini VLL is used, if PEs at two ends of a virtual connection (VC) use different control words,
the VC may not become Up

E.A control word generally has two bytes and can ne extended to four bytes.

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Question 31

Question 32

Question 33

Question 34

Question 35

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