QUESTION NO: 1
What technique should be used on BGP edge routers to prevent a multi-homed autonomous system from becoming a transit system?
A. Advertise with a high MED value all networks that are discovered via external BGP.
B. Set the no-export community attribute on all networks that are advertised externally.
C. Remove the AS-Path information on all routes in the BGP table prior to advertising externally.
D. Set the origin code to incomplete for all networks that are discovered via external BGP.
E. Only advertise networks externally if they have been discovered via internal BGP.
F. Use an outgoing distribution list to filter all networks not originating from inside the autonomous system.
Answer: F
Explanation:
The minimum configuration that guarantees you won't become a transit AS is shown in the following example:router bgp 65000neighbor 10.1.1.1 filter-list 1 out!ip as-path access-list 1 permit ^$.In this example, the outgoing filter list says that all traffic not sourced from the local AS, should not be advertised. This will prevent the announcement of routes that originated from other Autonomous Systems, and prevent traffic destined for networks in another AS from going through your AS. This is useful real-world information to know and if you configure your network with BGP in a multi-homed environmet, odds are good that you will want to implement this kind of filter.
QUESTION NO: 3
Which two methods use IPsec to provide secure connectivity from the branch office to the headquarters office? (Choose two.)
A. DMVPN
B. MPLS VPN
C. Virtual Tunnel Interface (VTI)
D. SSL VPN
E. PPPoE
Answer: A,C
QUESTION NO: 4
Given the accompanying output, which additional command is needed to redistribute IGRP into EIGRP? Router eigrp,123,Network 10.10.10.0,No auto-summary!Router igrp 123,Network 172.16.0.0,Network 172.17.0.0
A. Under the router igrp mode add redistribute eigrp 123
B. Under the router eigrp mode add redistribute igrp 123
C. Under the router eigrp mode add redistribute igrp 123 subnets
D. None, EIGRP and IGRP are automatically redistributed in this instance.
Answer: D
Explanation:
The point of this question is redistribute IGRP into EIGRP.When redistributing IGRP into EIGRP, there is a feature that they are automatically redistributed if they have same autonomous system number; in opposite, they need to manually redistributed if they have different autonomous system number. So option D is correct.
QUESTION NO: 6
Which BGP attribute is used by BGP to prevent routing loops? Select the best response.
A. AS-path
B. next-hop
C. MED
D. weight
E. local preference
F. origin
Answer: A
QUESTION NO: 7
Which two among the following are used to indicate external type of route in routing table?(Choose two.)
A. D EX
B. IA
C. E2
D. R E2
E. i L2
Answer: A,C
QUESTION NO: 9
Which BGP command provides the router ID, local preference, next hop, and BGP path in its output? Select the best response.
A. show ip route bgp
B. show ip bgp
C. show ip bgp neighbors
D. show ip bgp summary
Answer: B
