NO.156 Compared with the OSPFv2 packet header, what is the field added in the OSPFv3 packet header?

NO.157 What is the meaning of ipv6 enable topology ipv6 in IS-IS protocol view?

NO.158 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.159 According to this figure, what can we judge?

NO.160 Which of the following regular expressions can match only BGP route entries that pass through AS200 and then AS300?

NO.161 IS-IS is a link-state routing protocol that uses the SPF algorithm for route calculation. As shown in the figure, a campus deploys both IPv4 and IPv6 and runs IS-IS to achieve network interconnection, of which R2 only supports IPv4.

Which of the following statements is true about the topology calculation of this network?

NO.162 An engineer uses two routers to test IPV6 services, and runs BGP4+ to simulate the interconnection between the headquarters and branches. As shown in the figure, an engineer captures packets to view the Update message sent by R1. About the description of the message information, which of the following statements is correct?

NO.163 An enterprise purchased private lines from two operators. In order to optimize the lines, the enterprise used BGP to learn routing entries from the two operators. However, the enterprise found that the traffic of the egress route increased greatly after this configuration. After the network engineering investigation, it was found that the traffic of the two operators was passed to each other through the enterprise egress router.
Therefore, the enterprise intends to use the routing strategy so that the traffic of the packets of different carriers is no longer passed to each other. Is the configuration in the following figure correct?

NO.164 As shown in the figure, OSPF is enabled on all interfaces of the router. Which of the following statements is correct?

NO.165 In the network shown in the figure below, if a remote LDP session between SWA and SWC is to be realized, which of the following statement is correct?

NO.166 As shown in the figure, the network has a loop because STP is not enabled. Which of the following may be caused? (Multiple choice)

NO.167 Network administrator A wants to view the neighbor status of BGP router R2. The BGP neighbor status information of R2 is shown in the figure. Please help network administrator A to obtain the following information: The AS where R2 is located is AS ( ). (write only numbers, do not add punctuation or spaces)

NO.168 In the process of establishing an LDP session, the active party will first send Initialization information to negotiate parameters. If the passive party does not accept the negotiated parameters, it will send:

NO.169 Bandwidth determines the rate of data transmission, and the maximum bandwidth of transmission is determined by the minimum link bandwidth on the transmission path.

NO.170 Which of the following can the patterns of network design generally be classified into? (Multiple choice)

NO.171 In OSPFv3, what is the flooding range of the LSA in the entire autonomous system?