After evaluating the BGP attributes （AS Path, Local Preference, MED, and Origin) there are four additional route selection techniques used as tie-breakers.In which order are these applied？（）

A．MED

B．Origin

C．AS Path

D．Next Hop

E．Aggregator

A. Origin

B. AS path

C. Next hop

D. Community

E. Multiple exit discriminator

A. route selection

B. loop avoidance

C. determining equal cost paths for reachablilty

D. defining the application of other BGP attributes

iple autonomous () . BGP assumes that routing within an autonomous system is done by an intra-autonomous system routing protocol.BGP does not make any assumptions about intra-autonomous system （） protocols employed by the various autonomous systems. Specifically， BGP does not require all autonomous systems to run the same intra-autonomous system routing protocol. BGP is a real inter-autonomous system routing protocol. It imposes no constraints on the underlying Internet topology. The information exchanged via BGP is sufficient to construct a graph of autonomous systems connectivity from which routing loops may be pruned and some routing () decisions at the autonomous system level may be enforced. The key feature of the protocol is the notion of Path Attributes. This feature provides BGP with flexibility and expandability. Path （） are partitioned into well-known and optional. The provision for optional attributes allows experimentation that may involve a group of BGP （） without affecting the rest of the Internet. New optional attributes can be added to the protocol in much the same fashion as new options are added to the Telnet protocol， for instance.

A.routers B.systems C.computers D.sources A.routing B.switching C.transmitting D.receiving A.connection B.policy C.source D.consideration A.states B.searches C.attributes D.researches A.routers B.states C.meters D.costs

A. show route bgp

B. show route extensive

C. show bgp attribute

D. show bgp neighbor

A. show ip bgp inconsistent-as

B. show ip bgp paths

C. show ip bgp community-list

D. show ip bgp regexp

A. local preference

B. MED

C. weight

D. or igin

E. next - hop

F. AS - path

A. It lists a set of path attributes, along with a list of prefixes that use those PAs

B. It lists a prefix/length, plus the PA settings for that prefix

C. It lists withdrawn routes, but never in the same Update message as newly advertised routes

D. A single Update message lists at most a single prefix/lengtH

A. show ip route bgp

B. show ip bgp

C. show ip bgp neighbors

D. show ip bgp summary