NO.80 Please match the following BGP messages with their corresponding functions.

NO.81 How long is the default lease period of the DHCP address pool?

NO.82 Which of the following configurations are not mandatory when an administrator configures VRRP?

NO.83 In the active-standby negotiation of dual-link dual-device hot standby, the AP collects and compares the parameters carried in the ( ) message responded by the active and standby ACs to select the active AC.

NO.84 Which of the following descriptions of multicast MAC addresses are incorrect? (Multiple choice)

NO.85 On an IS-IS network, areas are divided by router, and a router can belong to only one area. Therefore, an IS-IS router only needs to maintain the LSDB of its area.

NO.86 The flow mirroring port can realize the function of transmitting the packets of specific business flows on the mirrored port to the monitoring device for analysis and monitoring.

NO.87 OSPFv3 uses the same route advertisement method as OSPFv2: it is advertised through the network command in the OSPFv3 area view.

NO.88 See the following figure. RTA, RTB, RTC, and RTD are in the same AS and establish IBGP peer relationships through direct links. RTB an RTC are route reflectors (RRs), RTA and RTC are the RR clients of RTB, and RTB and RTD are the RR clients of RTC. If RTA advertises the route 10.1.1.0/24 to the BGP process, the Originator ID of the BGP route received by RTD is——————.

NO.89 Which of the following log levels are available in the USG series firewalls? (Multiple choice)

NO.90 Regarding the description of the default security zone of the USG series security firewall, which one is correct?

NO.91 A monitoring plane usually comprises the monitoring units of main control boards and interface boards. This plane can monitor the system environment independently. Which of the following environment monitoring functions can be provided by the monitoring plane?

NO.92 Multiple BGP processes cannot be configured on one router.

NO.93 Telemetry is mainly used to monitor the network, including packet inspection and analysis, security intrusion and attack detection, intelligent data collection, application performance management, etc. Which of the following descriptions about Telemetry is wrong?

NO.94 On an office network of an enterprise, OSPF is enabled on two directly connected routers. During adjacency establishment, the state machine stays in the 2-way state. Which of the following statements are not possible causes?

NO.95 Regarding the OSPF multi-process description, the error is:

NO.96 A router forwards traffic based on a FIB table. Which of the following values of the Flag field in a routing entry indicates that the next hop of the route is the gateway?

NO.97 Which of the following statements about the forwarding plane of a switch is false?

NO.98 Which of the following VPN technologies may have two IP packet headers in one packet? (Multiple choice)

NO.99 Which of the description about IBGP neighbors and EBGP neighbors is wrong?

NO.100 Which of the following statements about the BFD detection mode is correct? (Multiple choice)

NO.101 In the N+1 backup network of WLAN, which of the following statements about the application of option43 is correct? (Multiple choice)

NO.102 On an OSPF network, different device roles generate different types of LSAs that vary in function. Which of the following types of LSAs cannot be generated by a pure ASBR?

NO.103 BGP routers can send incremental BGP routing updates or perform periodic updates.