Which BGP configuration must be applied to achieve this goal?

Posted by: Pdfprep Category: 400-201 Tags: , ,

Refer to the exhibit Customer ABC is peering with two service providers for internet access.

In order to prevent the AS 100 from becoming a transit AS between ISP_1 and ISP_2.

Which BGP configuration must be applied to achieve this goal?
A . CE1#
ip as-path access-list 1 permit^100$
route-map LOCAL_ONLY permit 10
match as-path 1
router bgp 100
neighbor 1.1.2.2 route-map LOCAL_ONLY in

CE2#
ip as-path access-list 1 permit^100$
route-map LOCAL_ONLY permit 10
match as-path 1
router bgp 100
neighbor 1.1.1.2 route-map LOCAL_ONLY in
B . CE1#
ip as-path access-list 1 permit^$
route-map LOCAL_ONLY permit 10
match as-path 1
router bgp 100
neighbor 1.1.2.2 route-map LOCAL_ONLY out

CE2#
ip as-path access-list 1 permit^$
route-map LOCAL_ONLY permit 10
match as-path 1
router bgp 100
neighbor 1.1.2.2 route-map LOCAL_ONLY out
C . CE1#
ip as-path access-list 1 permit^$
route-map LOCAL_ONLY permit 10
match as-path 1
router bgp 100
neighbor 1.1.2.2 route-map LOCAL_ONLY out

CE2#
ip as-path access-list 1 permit^$
route-map LOCAL_ONLY permit 10
match as-path 1
router bgp 100
neighbor 1.1.2.2 route-map LOCAL_ONLY out
D . CE1#
ip as-path access-list 1 permit^11$
route-map LOCAL_ONLY permit 10
match as-path 1
router bgp 100
neighbor 1.1.2.2 route-map LOCAL_ONLY out

CE2#
ip as-path access-list 1 permit^11$
route-map LOCAL_ONLY permit 10
match as-path 1
router bgp 100
neighbor 1.1.2.2 route-map LOCAL_ONLY out
E . CE1#
ip as-path access-list 1 permit^$
route-map LOCAL_ONLY permit 10
match as-path 1
router bgp 100
neighbor 1.1.2.2 route-map LOCAL_ONLY in

CE2#
ip as-path access-list 1 permit^$
route-map LOCAL_ONLY permit 10
match as-path 1
router bgp 100
neighbor 1.1.1.2 route-map LOCAL_ONLY in

Answer: C

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