多项选择题

An engineer has been told to create an implementation plan to influence the choice of best BGP route on a single router using the Weight featurE. The sole Enterprise Internet - connected router, Ent 1, has neighbor relationships with Routers ISP1 and ISP2, which reside inside two different ISPs. The goal is to prefer all routes learned from ISP1 over ISP2 using Weight.
Which of the following answers lists a configuration step that would not be usefu l for achieving these goals?（）

A. Configuring the neighbor weight command on Ent1.
B. Having the ISPs configure the neighbor route - map out command on ISP1 and ISP2, with the route map setting weight.
C. Configuring the set weight command inside a route map on Router Ent1.
D. Configuring a prefix list to match all class C networks.

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单项选择题Router R1 learns two routes with BGP for prefix 200.1.0.0 16. Comparing the two routes, route 1 has a shorter AS_Path Length, smaller MED, the same Weight, and smaller Local PreferencE. Which of the following is true about Router R1s choice of best path for this prefix?（）

A. Route 1 is the best route.
B. Route 2 is the best route.
C. The routes tie as best, but one will be picked to be placed in the routing table based on tiebreakers .
D. Neither route is considered best.

单项选择题Router R1 learns two routes with BGP for prefix 200.1.0.0 16. Comparing the two routes, route 1 has a longer AS_Path Length, bigger MED, bigger Weight, and smaller Loca l PreferencE. Which of the following is true about Router R1s choice of best path for this prefix?（）

单项选择题An engineer is preparing an implementation plan in which the configuration needs to influence BGPs choice of best path. Which of the following is least likely to be used by the configuration in this imple mentation plan?（）

A. Weight
B. Origin code
C. AS_Path
D. Local_Pref

多项选择题Which of the following commands causes a router to bring down BGP neighbor relationships?（）

A. clear ip bgp *
B. clear ip bgp 1.1.1.1
C. clear ip bgp * soft
D. clear ip bgp 1.1.1.1 out

多项选择题Which of the following three BGP filtering methods enabled with the neighbor command will filter BGP prefixes based on the prefix and prefix length？（）

A. A neighbor distribute - list out command, referencing a standard ACL
B. A neighbor prefix - list out command
C. A neighbor filter - list out command
D. A neighbor distribute - list out command, referencing an extended ACL
E. A neighbor route - map out command