642-885 무료 덤프문제 온라인 액세스

Refer to the exhibit.

Which three statements are correct regarding the Cisco IOS-XR configuration? (Choose three.)

• A.IGMPv3 is enabled on all interfaces
• B.This router, acting as the RP mapping agent, will send RP discovery messages to the
  224.0.1.39 group
• C.This router is a candidate PIM-BIDIR RP for the 224.11.11.11 multicast group
• D.Other routers will recognize this router as the RP for all multicast groups with this router loopback 0 IP address
• E.This router, acting as the RP mapping agent, will send RP announcement messages to the 224.0.1.40 group
• F.This router is the RP mapping agent only for the 224.11.11.11 and 224.99.99.99 multicast groups
• G.This router is a candidate PIM-SM RP for the 224.99.99.99 multicast group

Which configuration for implementing 6PE on an IS-IS-enabled Cisco IOS XR router is correct?

• A.interface GigabitEthernet0/0/0/0 ipv6 address 2001:DB8:DD11::1/64 router isis ipv6-tun net 49.0000.0000.00010.00 address-family ipv6 unicast single-topology interface GigabitEthernet0/0/0/0 address-family ipv6 unicast router bgp 200 bgp router-id 209.165.202.129 address-family ipv4 unicast address-family ipv6 unicast redistribute static neighbor 209.165.202.130 remote-as 200 address-family ipv4 unicast address-family ipv6 labeled-unicast
• B.interface GigabitEthernet0/0/0/0 ipv6 address 2001:DB8:DD11::1/64 router isis ipv6-tun net 49.0000.0000.00010.00 address-family ipv6 unicast single-topology interface GigabitEthernet0/0/0/0 address-family ipv6 unicast router bgp 200 bgp router-id 209.165.202.129 address-family ipv4 unicast address-family ipv6 unicast redistribute connected redistribute isis ipv6-tun neighbor 209.165.202.130 remote-as 200 address-family ipv4 unicast address-family ipv6 labeled-unicast
• C.interface GigabitEthernet0/0/0/0 ipv6 address 2001:DB8:DD11::1/64 router isis ipv6-tun net 49.0000.0000.00010.00 address-family ipv6 unicast single-topology router bgp 200 bgp router-id 209.165.202.129 address-family ipv4 unicast address-family ipv6 unicast redistribute isis ipv6-tun neighbor 209.165.202.130 remote-as 200 address-family ipv4 unicast address-family ipv6 labeled-unicast
• D.interface GigabitEthernet0/0/0/0 ipv6 address 2001:DB8:DD11::1/64 router isis ipv6-tun net 49.0000.0000.00010.00 address-family ipv6 unicast single-topology interface GigabitEthernet0/0/0/0 address-family ipv6 unicast router bgp 200 bgp router-id 209.165.202.129 address-family ipv4 unicast address-family ipv6 unicast redistribute connected redistribute isis ipv6-tun neighbor 209.165.202.130 remote-as 200 address-family ipv4 unicast
• E.interface GigabitEthernet0/0/0/0 ipv6 address 2001:DB8:DD11::1/64 router isis ipv6-tun net 49.0000.0000.00010.00 address-family ipv6 unicast single-topology redistribute bgp 200 interface GigabitEthernet0/0/0/0 address-family ipv6 unicast router bgp 200 bgp router-id 209.165.202.129 address-family ipv4 unicast address-family ipv6 unicast redistribute isis ipv6-tun neighbor 209.165.202.130 remote-as 200 address-family ipv4 unicast address-family ipv6 labeled-unicast

Refer to the exhibit.

Which option is the function of designing a hub and spoke confederation?

• A.reduces the iBGP mesh, iBGP mesh will be in sub non-transit ASs
• B.increases eBGP sessions between the confederation sub ASs
• C.allows transit backbone area and non-transit ASs to run the same IGP
• D.allows transit backbone area 66000 to be a blackhole for non-transit ASs

Refer to the configuration exhibit, taken from a Cisco IOS-XR router.

Which configuration change is required to properly enable this router as the signaling router for implementing source-based RTBH filtering?

• A.Pass in the route policy
• B.The 192.0.2.1/32 static route should be tagged as 666 (tag 666)
• C.Set local-preference 1000 in the route policy
• D.Set community (no-export) in the route policy

Refer to the topology diagram shown in the exhibit and the partial configurations shown below.

Once the attack from 209.165.201.144/28 to 209.165.202.128/28 has been detected, which additional configurations are required on the P1 IOS-XR router to implement source-based remote-triggered black hole filtering?
! router bgp 123 address-family ipv4 unicast redistribute static route-policy test
!

• A.router static address-family ipv4 unicast 209.165.201.144/28 null0 tag 666 192.0.2.1/32 null0 ! route-policy test if tag is 666 then set next-hop 192.0.2.1 set community (no-export) endif end-policy
• B.router static address-family ipv4 unicast 209.165.201.144/28 null0 tag 666 192.0.2.1/32 null0 tag 667 ! route-policy test if tag is 666 then set next-hop 192.0.2.1 endif if tag is 667 then set community (no-export) endif end-policy !
• C.router static address-family ipv4 unicast 209.165.202.128/28 null0 tag 666 192.0.2.1/32 null0 ! route-policy test if tag is 666 then set next-hop 192.0.2.1 set community (no-export) endif end-policy !
• D.router static address-family ipv4 unicast 209.165.202.128/28 null0 tag 666 192.0.2.1/32 null0 tag 667 ! route-policy test if tag is 666 then set next-hop 192.0.2.1 endif if tag is 667 then set community (no-export) endif end-policy !