NO.154 Access control refers to restricting or blocking specific access traffic based on the needs of business management and control on the basis of reachable network routes.

NO.155 A campus deploys OSPF to realize network interworking. The LSDB of R2 is shown in the figure.

What information can be derived from this LSDB? (Multiple choice)

NO.156 As shown in the figure, in a medium-sized network, in order to improve the reliability of RR, BGP generally deploys double R.

When deploying dual EE, the Cluster IDs of the two RRs are generally set to be the same. What is the reason for this?

NO.157 As shown in the figure, OSPF is enabled on all interfaces of the router. The ip address marked in the figure is the IP address of the loopback0 interface. The Loopback0 of R1, R2, and R3 is advertised in area 1, and the Loopback0 of R4 is advertised in area 0, Loopback0 of R5 announces which of the following functional addresses in area 2 can ping each other?

NO.158 According to this figure, we can judge:

NO.159 The default MPLS label publishing mode, label distribution control mode and label retention mode of Huawei routers are:

NO.160 When deploying BGPIMPLS IPVPN, when two VPNs have a common site, the common site must not use overlapping address space with other sites of the two VPNs.

NO.161 In the scenario of multi-level RR, a large number of secondary RRs will be connected to the primary RR, which may cause the BGP routing table of the primary RR to overflow. What method can be used to reduce the risk of overflow of the BGP routing table of the level RR?

NO.162 Which of the following sequences can be matched by the regular expression 100.S? (Multiple choice)

NO.163 Which of the following description of TTL in MPLS Header is correct?

NO.164 Which of the following limitations of traditional networks do not include?

NO.165 All routers run OSPF as shown.

Which of the following statements is correct?

NO.166 Traditional BGP-4 can only manage IPv4 unicast routing information. MP-BGP extends BGP-4 in order to provide support for various network layer protocols. MP-BGP uses address family to distinguish different network layer protocols. Which of the following address families are currently supported? (Multiple choice)

NO.167 Which of the following is not a preliminary preparation for the cutover plan?

NO.168 Which of the following statements about the MP_REACH_NLRI attribute of BGP4+ is correct? (Multiple choice)