Refer to the exhibit.

Cisco 350-501 Question Answer

Refer to the exhibit. A network engineer is configuring router RB to secure BGP advertisements against route hijacking activity. RB must validate all prefixes that it receives from origin AS 200 before installing them in the BGP route table. Which configuration meets the requirement?

RB(config)# router bgp 100

RB(config-router)# address-family ipv4 unicast

RB(config-router-af)# bgp bestpath origin-as use validity

RB(config-bgp)# router bgp 100

RB(config-bgp)# bgp origin-as validation signal ibgp

RB(config-bgp)# bgp bestpath origin-as allow invalid

RB(config-bgp)# router bgp 100

RB(config-bgp)# bgp origin-as validation time off

RB(config)# router bgp 100

RB(config-router)# address-family ipv4 unicast

PB(config-router-af)# bgp origin-as validation enable