先試後買

A. By default, matching is performed according to the "depth first" principle.

B. There is only one matching order and cannot be modified.

C. By default, match pe first rmit, then match the order of deny.

D. By default, according to Rule-ID, matching from small to large.

A. [Huawei]interface GigabitEthernet 0/0/1 [Huawei-GigabitEthernet0/0/1]port link type trunk
[Huawei-GigabitEthernet0/0/1port trunk allow pass vlan 10
[Huaweijinterface GigabitEthernet 0/0/1

B. [Huawei-GigabitEthernet0/0l]port link-type access [Huawei-GigabitEthernet0/0/1 ]port-security enable
[Huawei]interface GigabitEthernet 0/0/1

C. [Huawei-GigabitEthernet0/0/1]port link type access [Huawei GigabitEthernet0/0/1]ipsg enable
. [Huawei]interface GigabitEthernet 0/0/1

D. [Huawei-GigabitEthernet0/0/1 ]port link type access [Huawei-GigabitEthernet0/0/1]port isolate enable

A. MUX VLAN is divided into Principal VL AN and Subordinate VLAN is divided into Separate VLAN and lsolate VLAN

B. in the same VLAUnder N, MUX VLAN can and Super Mixed use of VLANs

C. Principal Port can and MUX All ports within the VLAN communicate

D. each Separate VLAN can bind multiple Principals VLAN

A. 802.1The w bridge only forwards BPDUs received from the root bridge

B. 802.1D bridge will not forward BPDU message

C. 802.1D bridges only forward BPs received from the root bridgeDU message

D. 802.1w Bridges do not forward BPDUs

A. NED

B. AS PATH

C. Oorigin

D. Local -Preference

A. When configuring local policy routing, if two next hops and two outgoing interfaces are set in the policy at the same time, the packet forwarding is only load-balanced between the two outgoing interfaces.

B. Interface policy-based routing is only supported in the inbound direction of an interface.

C. If the packet matches the pe in the interface policy routingrmit entry, the packet will be forwarded according to the next hop specified by the interface policy route.send.

D. Interface policy-based routing takes effect only for forwarded packets, not for locally delivered packets.

A. Configure IPSG

B. configureDAI

C. Limit what the interface allows to learnDHCP The maximum number of Snooping binding entries

D. configure staticARP binding table

A. It will restrict the routing entries generated by the device itself from publishing to the outside world.

B. If this command is not configured, the device will import the external routing protocol to IS-I by default.

C. It needs to be used in conjunction with route import to advertise only part of the imported external routes to neighbors.

D. This command will filter the link status information published externally.

E. The routes are all external release

A. The next hop of the route that RTB learns from network segment 2.2.2.2/32 is RTA.

B. existAdjusting the ISIS priority on RTB to 160 can avoid suboptimal routing problems in the network.

C. existThe following configuration is used on RTC to filter out only 2.2.2 when importing routesRoute
2/32 network segment. [RTC]ip ip-prefix 10 index 1 deny 2.0.0.0 8 less-equal 32
[RTC-isis- 1] filterr-policy ip-prefix 10 import

D. The following configuration can beWhen RTC imports OSPF routes, the routes from the 2.2.2.2/32 network segment of RTD are filtered out. [RTC-acl-basic-2001]rule 5 deny source 2.0.0.0 0.255
255.255
[RTC-ac1-basi-2001]rule 10 permit
[RTC-isis-1]filter-policy 2001 import

A. allow peerCE decides which VPNv4 routes to import into a specific VRF

B. allow peerCE decides which VPNv4 routes to not import into a specific VRF

C. allow peerPE decides which VPNv4 routes to not import into a specific VRF

D. allow peerPE decides which VPNv4 routes to import into a specific VRF

A. When BGP is used to exchange routing information between PE and CE, if the autonomous systems where the two VPN sites are located use the same private AS number, the AS number replacement function can be used to replace the received AS number with any specified AS number. The As number in the private network route, to prevent the route from being discarded due to repeated AS numbers

B. In the case of CE multi-homing, enabling the BGP AS number replacement function may cause routing loops. BGP So can be used to prevent routing loops in VPN sites.

C. When BGP is used to exchange routing information between PE and CE, there is no need to import private network routes into BGP on PE.

D. In the Hub & Spoke scenario, when Hub-CE and Hub-PE use IGP, Spoke-PE and Spoke-CE cannot use EBGP

A. The address of the multicast group of SSM is 232.0.0.0~232.255.255.255

B. Statically configure the mapping rules of SSM addresses on the IGMP querier, and map the group join information in the IGMPv1 or IGMPv2 member report to the group leave information

C. If the IGMP SSM Mapping. function is not enabled, neither IGMPv1 nor IGMPv2 supports the deployment of multicast in SSM mode

D. IGMP SSM Mapping does not process IGMPv3 report packets. In order to ensure that hosts running any version of IGMP on the same network segment can obtain SSM services, it is necessary to run IGMPV3 on the interface of the multicast router connected to the network segment where the member hosts are located.

A. When a host connected to the switch sends a Ping after the message

B. After the VRRP protocol master and backup role elections are completed

C. After the DHCP client receives the confirmation message sent by the server

D. When a new host with an IP address is connected to the network

A. 0

B. 1

C. 2

D. 3

A. When sending a neighbor solicitation packet, the source address must be the link-local address of the end interface

B. Address resolution realizes the function of resolving from IPv6 address to link layer address

C. When sending a Neighbor Solicitation message, the destination address must be the neighbor's requested node multicast address.

D. Two ICMPv6 messages, Neighbor Solicitation and Neighbor Advertisement, are used in the address resolution process.