If the PIM-SM protocol is running in a multicast network , you need to configure RP, and the configuration equation of RP is divided into dynamic RP and static RP. The following configuration description of the RP is correct (radio).
Correct Answer: D
Question 82
Which of the following statements about 802.1X authentication are correct?
Correct Answer: A,B,C,D
802.1X Authentication Overview 802.1X is a port-based authentication mechanism used for secure network access control. It involves: * EAPoL (Extensible Authentication Protocol over LAN) communication between the client (supplicant) and the switch (authenticator). * RADIUS communication between the authenticator and the authentication server (AAA server). # A. 802.1X authentication uses EAPoL to exchange authentication information. * EAPoL (Extensible Authentication Protocol over LAN) is used to send authentication packets over Ethernet (IEEE 802.3) networks. # B. In EAP termination mode, the network device terminates EAP packets and re-encapsulates them into RADIUS. * The switch acts as an authentication proxy by terminating EAP sessions and converting authentication information into RADIUS format. # C. EAPoL is for wired (802.3), EAPoW is for wireless (802.11). * EAPoL (EAP over LAN) is used in wired Ethernet networks. * EAPoW (EAP over Wireless) is used in Wi-Fi (802.11) networks. # D. In EAP relay mode, EAP packets are encapsulated into RADIUS using EAPoR (EAP over RADIUS). * The switch does not terminate the EAP session but instead forwards EAP messages to the AAA server inside RADIUS packets. Reference from Huawei HCIE-Datacom Documentation: * Huawei 802.1X Configuration Guide - EAPoL, EAPoW, and EAPoR * HCIE-Datacom Training Material - AAA Authentication Modes
Question 83
In a network, the same gigabit running S and OSPF anti-tampering and fluttering as shown in the figure, on the two border routers RTB and RTC are introduced into the wine route, the device question is to use gigabit one port strobe, , 222 The network is introduced into the OSE via impotrote direct on the RTD, assuming that all other configurations are dead default configurations, then the description of this network is wrong ?
Correct Answer: D
Question 84
As shown in the figure, when PE1 receives an ARP request packet, it forwards the packet to PE4. The packet then carries two labels. The label value 201 is carried by the EVPN Type ____ route. (Enter only digits.)
Correct Answer:
3 Explanation: Understanding EVPN (Ethernet VPN) Label Allocation and ARP Handling #What Happens in This Scenario? 1##CE1 (192.168.1.1) sends an ARP request to discover the MAC address of CE2 (192.168.1.2). 2##PE1 receives the ARP request and needs to forward it over the EVPN fabric. 3##To send the broadcast ARP request across the EVPN network, PE1 forwards the packet to PE4 using BUM (Broadcast, Unknown unicast, and Multicast) forwarding. 4##PE4, as the Designated Forwarder (DF), forwards the ARP request to CE2. Role of Labels in EVPN VXLAN/MPLS Networks #EVPN uses BGP to distribute MAC/IP reachability information using different route types. #EVPN Type 2 Route (MAC/IP Advertisement Route): Used forMAC-to-IP address mappingannouncements. Ensuresremote VTEPs (PE routers) learn MAC-to-IP bindingsdynamically. #EVPN Type 3 Route (Inclusive Multicast Route): Used forBUM traffic (Broadcast, Unknown Unicast, Multicast). Assigns a multicast label (e.g., 201) to be used for forwarding broadcast packets like ARP requests. #In this case: Thelabel 201is used forBUM traffic forwarding. BUM traffic is handled using an EVPN Type 3 route. Why is the Answer 3? #EVPN Type 3 routes carry labels for BUM traffic, which includes ARP requests. #Label 201 is used for multicast distribution, which is managed by Type 3 routes. Real-World Application: VXLAN Data Centers:UsesEVPN Type 3 routes to control BUM traffic efficiently. Campus Networks:Preventsunnecessary flooding of ARP requests across VXLAN domains. #Reference:Huawei HCIE-Datacom Guide - EVPN BGP Route Types and Multicast Labeling
Question 85
View the details of all VPN instances on a network device and the results are as follows, which of the following statements is wrong?( Multiple choice questions).
