As shown in the figure, R1 and R2 are VRRP backup groups with VRID, where the State of R1 is ________, and the State of R2 is ________.

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Which of the following descriptions about BGP routing are correct? (Multiple choice)

• A.The import-route method supports injecting direct routes into the BGP routing table
• B.Similar to ordinary IGP, BGP itself also calculates and generates routes
• C.BGP supports network and import-route to inject routes
• D.BGP can aggregate based on existing routing entries

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On the network shown in the following figure, the management VLAN is VLAN 10, and the AP is configured to obtain an IP address on the network segment 10.1.1.0/24 through DHCP. The AP, AC, and AR function as the DHCP client, DHCP relay agent, and DHCP server, respectively. Which of the following configurations for the DHCP relay agent and DHCP server are correct?

• A.[AC] dhcp server group AP
  [AC-dhcp-server-group-AP] dhcp-server 172.21.1.2
  [AC-dhcp-server-group-AP] quit
  [AC] interface Vlanif 10
  [AC-Vlanif 10] dhcp select relay
  [AC-Vlanif 10] dhcp relay server-select AP
  [AC-Vlanif 10] quit
• B.[AR] ip pool AP
  [AR-ip-pool-AP] network 10.1.1.0 mask 24
  [AR-ip-pool-AP] gateway-list 10.1.1.2
  [AR-ip-pool-AP] excluded-ip-address 10.1.1.1
  [AR-ip-pool-AP] quit
  [AR] interface GigabitEthernet 0/0/1
  [AR-GigabitEthernetO/O/1] dhcp select global
  [AR-GigabitEthernet0/0/l] quit
  [AR] ip route-static 10.1.1.0 255.255.255.0 172.21.1.1
• C.[AR] ip pool AP
  [AR-ip-pool-AP] network 172.21.1.0 mask 24
  [AR-ip-pool-AP] gateway-list 172.21.1.2
  [AR-ip-pool-AP] excluded-ip-address 172.21.1.1
  [AR-ip-pool-AP] quit
  [AR] interface GigabitEthernet 0/0/1
  [AR-GigabitEthernetO/0/1] dhcp select global
  [AR-GigabitEthernetO/0/1] quit
  [AR] ip route-static 10.1.1.0 255.255.255.0 172.21.1.1
• D.[AC] dhcp server group AP
  [AC-dhcp-server-group-AP] dhcp-server 10.1.1.2
  [AC-dhcp-server-group-AP] quit
  [AC] interface Vlanif 10
  [AC-Vlanif 10] dhcp select relay
  [AC-Vlanif 10] dhcp relay server-select AP
  [AC-VlaniflO] quit

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Among the following BGP attributes, which ones are recognized and must be followed? (Multiple choice)

• A.As-Path
• B.Next_hop
• C.Local_Pref
• D.WITH

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Regarding the description of configuring the security level of the security zone of the firewall, which of the following is wrong?

• A.In the same system, two security zones are not allowed to configure the same security level
• B.Once the security level is set, it is not allowed to change
• C.The newly created security area, the system defaults its security level to 1
• D.Security levels can only be set for custom security areas

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