H12-821_V1.0-ENU 無料問題集「Huawei HCIP-Datacom-Core Technology V1.0」

（A）R2 and R1 form a Level-1 adjacency relationship, and R2 and R4 form a Level-2 adjacency relationship.

（B）The LSDB of Level-1 of the R1 device only contains the routing information of this area.

（C）The LSDB of Level-2 of the R6 device only contains the routing information of this area.

（D）R1 can access R4 through R2 or R3

（A）FALSE

（B）TRUE

（A）Both stacking and clustering can combine multiple switches to logically virtualize into one switch

（B）Both stacking and clustering can be combined with link aggregation technology to easily build a highly reliable, loop-free campus network

（C）Both stacking and clustering can improve resource utilization and reduce the complexity of network planning

（D）The difference between stacking and clustering is that a stack of modular switches is called a stack, and a boxed switch is called a cluster.

（A）FALSE

（B）TRUE

（A）FALSE

（B）TRUE

（A）PTM-DM works in the "pull" working mode

（B）PIM-SM must require RP

（C）PIM-SM works in a "push" working mode

（D）PIM-DM is suitable for multicast network structures with dense members.

（A）FALSE

（B）TRUE

（A）Local_Pref

（B）Commmnity

（C）Multi_Exit_Disc

（D）Ageregator

（A）When sending a Neighbor Solicitation message, the destination address is set as the multicast address of the requested node of the neighbor

（B）Two types of ICMPv6 packets, neighbor solicitation and neighbor advertisement, are used in the addressing process.

（C）The address realizes the function from IPv6 address to link layer address

（D）When sending a Neighbor Solicitation message, the source address is set to be the link-local address of the local interface

（A）30

（B）50

（C）80

（D）40

（A）A MAC address spoofing attack will cause the data that the switch wants to send to the correct destination to be sent to the attacker.

（B）An attacker can implement a MAC address spoofing attack by sending a data frame with a forged source MAC address to the switch.

（C）MAC address spoofing attacks will cause the switch to learn the wrong mapping relationship between MAC addresses and IP addresses.

（D）MAC address spoofing attacks mainly utilize the switch MAC address learning mechanism.

（A）route-policy can only match routes and data packets, and cannot be used to modify routing attributes or data packet forwarding behavior

（B）as-path-filter is used to match the AS-PATH attribute in BGP routing information, so it can only be used to filter BGP routes

（C）The access control list (ACL) is used to match the IP routing information or the address of the data packet

（D）Prefix list (ip-prefix) matching object is the destination address of routing information

（A）Option 82 is called the relay agent information option, which records the VLAN ID of the switch port connected to the DHCP client

（B）Option 82 does not contain the MAC address of the relay device

（C）The Options field consists of three parts: Type, Length and Value

（D）Option 82 can contain up to 256 Sub-Options

（A）GRE does not support multicast traffic transmission

（B）GRE does not support authentication

（C）GRE supports simple keyword verification

（D）GRE is a three-layer packaging technology

（A）FALSE

（B）TRUE