QUESTION NO: 66
To establish a BGP session between two BGP speakers, what will be the first BGP message sent
by each BGP speaker after the transport protocol connection is established?
A. hello
B. query
C. open
D. sync
Answer: C
QUESTION NO: 67
In a multihomed environment with two ISP connections, which two statements are true? (Choose two.)
A. The customer should not be configured to act as a transit AS between the two ISPs.
B. It is recommended that the multi-homed customer use a registered (public) AS number.
C. The customer can use Local Preference on the customer’s edge routers to influence the BGP path selection process for the inbound traffic (traffic from the ISPs to the customer).
D. The advertisement of the customer’s IP address space can be conditioned by the customer’s edge routers by using a static route to the null0 interface and by using the proper network statement under router bgp.
E. AS-Path prepending can be configured on the customer’s edge router to influence the BGP path selection process for the outbound traffic (traffic from the customer to the ISPs).
Answer: A,B
QUESTION NO: 68
Examine the topology shown above. Within Transit AS 51001, R3 is setup as a route reflector for R1 and R2, and R4 is setup as a route reflector for R5 and R6. In this case, how many IBGP sessions are required with the Transit AS 51001?
A. 5
B. 36
C. 4
D. 10
E. 30
F. 15
Answer: A
QUESTION NO: 69
When using BGP to carry external routes, what is the ideal interaction between BGP and the IGP running within a Transit AS?
A. The IGP should carry the core subnets within the AS. Then a mutual redistribution between BGP and the IGP should be performed.
B. The external routes should be redistributed into a Link-State IGP (like OSPF or IS-IS) with filtering to reduce the size of the Link-State database.
C. The external routes should be redistributed into an IGP.
D. The IGP should carry the routes to reach the BGP next-hops and the core subnets within the AS.
Answer: D
QUESTION NO: 70
The core routers within a transit AS are running both IBGP and IGP. The edge routers within the transit AS are using the next-hop-self option to establish the IBGP sessions. What can be implemented to improve the routing performance to all external prefixes?
A. use route reflectors within the core
B. enable route redistribution from BGP into IGP
C. enable route redistribution from IGP into BGP
D. disable BGP synchronization on all the core routers
E. enable CEF on all the core and edge routers
Answer: E
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