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When a BGP router is not capable of understanding 4-byte AS numbers， it will see 4-byte AS numbers as aspecial， reserved， 2-byte AS number in the AS path. Which 2-byte AS number is this reserved one？（）
- A、00000
- B、12345
- C、23456
- D、65000
- E、99999
参考答案
更多 “When a BGP router is not capable of understanding 4-byte AS numbers， it will see 4-byte AS numbers as aspecial， reserved， 2-byte AS number in the AS path. Which 2-byte AS number is this reserved one？（）A、00000B、12345C、23456D、65000E、99999” 相关考题
考题
Which action does a BGP speaker take when it detects that the reset state bit is set in an openmessage?()
A. It tears down the BGP session.B. It sends a restart message to the peer.C. It marks all routes from that peer as stale.D. It sends a BGP refresh message to the peer
考题
When implementing BGP confederations, which configuration command establishes the globally unique AS number used with external peers outside your network?()
A. bgp confederation asB. bgp confederation systemC. bgp confederation remote-asD. bgp confederation identifier
考题
Which action occurs when the static route 10.0.55.2／32 is evaluated by the policy main－policy? ()
A. The route is advertised into BGP.B. The route is suppressed from BGP.C. The route is advertised into BGP and goes only one hop.D. The route is advertised into BGP and can only propagate throughout the neighboring AS.
考题
Which statement would prevent the sending of redundant route advertisements when your routereflector cluster is fully meshed?()
A. set protocols bgp group mygroup path-selection cisco-non-deterministic;B. set protocols bgp group i-bgp no-aggregator-id;C. set protocols bgp group mygroup no-client-reflect;D. set protocols bgp group i-bgp damping;
考题
In which three ways are C－BGP and E－BGP sessions similar?()
A. Both are configured as type external.B. Both configurations use the peer-as command.C. Neither advertises the local-preference attribute.D. Both set next-hop self when advertising routes to peers.E. Both modify the AS-path attribute when advertising routes.
考题
A router is running BGP and receives more than one route for a particular prefix. Assume all the routes for this prefix have the same attributes.Which three path features would be reasons be for the rou ter to ignore some of the routes and not consider them as candidates for the best path?（）A. paths from an internal BGP (iBGP) neighbor if the local autonomous system (AS) appears in the AS_PATHB. paths for which the NEXT_HOP is inaccess ibleC. paths from an external BGP (eBGP) neighbor if the local autonomous system (AS) appears in the AS_PATHD. paths for which the NEXT_HOP is accessibleE. paths that are marked as synchronized in the show ip bgp outputF. paths that are marked as not synchronized in the show ip bgp output
考题
Which BGP option i s required when load sharing over multiple equal － bandwidth parallel links from a single CE router to a single ISP router over eBGP?()
A. eBGP MultipathB. eBGP MultihopC. BGP SynchronizationD. Public AS numbers
考题
When the BGP path selection process is being performed on a Cisco router, which BGP attribute is used first when determining the best path?()
A. local preferenceB. MEDC. weightD. or iginE. next - hopF. AS - path
考题
When the BGP path selection process is being performed on a Cisco router, which BGP attribute is used first when determining the best path?（）A、local preferenceB、MEDC、weightD、or iginE、next - hopF、AS - path
考题
Which BGP option i s required when load sharing over multiple equal - bandwidth parallel links from a single CE router to a single ISP router over eBGP?（）A、eBGP MultipathB、eBGP MultihopC、BGP SynchronizationD、Public AS numbers
考题
When BGP is used as the PE-CE routing protocol, which of these statements is correct?（）A、On the CE router, PE neighbors must be configured in the VRF context on the CE routerB、On PE routers, the CE IBGP neighbors are configured in the global BGP configurationC、On PE routers, the CE EBGP neighbors are configured in the VRF contextD、A separate BGP process must be used on the PE routers for CE routers so that they do not use the same BGP routing process as that used for the PE router's other provider neighbors
考题
Which three statements about the route target （RT） are true？ （）A、The RT is a BGP extended community.B、The RT is an 8-byte field that is prefixed to an IPv4 address to make it a unique VPNv4 address.C、When a VPN route that is learned from a CE router is injected into BGP， one or more RTs are associated with itD、The distribution of VPN routing information is controlled through the use of VPN RTsE、When a VPN route that is learned from a CE router is injected into BGP， there is always one RT that is associated with it.
考题
Select the two answers that best describe the IP Event Dampening feature（）A、The IP Event Dampening uses exponential decay mechanism to suppress the effects of excessive interface flappingB、BGP Operators use IP Event Dampening to suppress the effect of unstable internet RoutesC、The IP Event Dampening works with routing protocols by stopping the announcement of dampened interface subnets in their updatesD、When IP Event Dampened internet routes resch their re-use limit BGP installs them in the Routing Table and announces them to other BGP speakers
考题
Which IOS features are used to avoid Routing loops when dynamic Routing protocols are used betweenPE and CE in MPLS-VPN networks？（）A、Site Of Origin SOO.B、SHAM links with OSPFC、BGP cost communityD、BGP feature allow-as inE、RPF Reverse Path forwarding.F、Access-list Control in Distance Vector protocol like RIP and EIGRP.
考题
By default, what does a Juniper Networks router set the BGP origin code to when originating theroute?（）A、IGP (Value 0)B、EGP (Value 1)C、Incomplete (Value 2)D、It depends on the route's source.
考题
When implementing BGP confederations, which configuration command establishes the globally unique AS number used with external peers outside your network?（）A、bgp confederation asB、bgp confederation systemC、bgp confederation remote-asD、bgp confederation identifier
考题
Which action does a BGP speaker take when it detects that the reset state bit is set in an openmessage?（）A、It tears down the BGP session.B、It sends a restart message to the peer.C、It marks all routes from that peer as stale.D、It sends a BGP refresh message to the peer
考题
单选题Which action occurs when the BGP route 20.1.0.0/16 is evaluated by the policy expression？（） [editpolicy-options] policy-statementmy-filter { term-first{ from{ route-filter192.168.0.0/16orlongeraccept； route-filter 192.168.1.0/24 exact accept； route-filter 192.168.2.0/24 exact； } then{ metric10； accept； } termsecond { then{ metric20； accept； }} policy-statementmain { termchange-attributes from{ policymy-filter； } thenaccept； } termdefault { thenreject； }} [editprotocols] bgp{ exportmain； }A
The route is not advertised into BGPB
The route is advertised into BGP with metric 10.C
The route is advertised into BGP with metric 20.D
The route is advertised into BGP with default metric.
考题
单选题Which statement describes the purpose of BGP route damping?（）A
Avoid interface bandwidth saturation.B
Drop BGP routes when the routing-table becomes full.C
Remove unnecessary route attributes when not in use.D
Limit the effects of a flaping interface on route removal and readvertisement.
考题
单选题Enterprise Router R1, in ASN 1, connects to ISP Router I1, ASN 2, using eBGP. There are two parallel serial links between the two rou ters. The implementation plan calls for each router to base their BGP TCP connection on their respective loopback1 interfaces, with IP addresses 1.1.1.1 and 2.2.2.2, respectively. Which of the following commands would not be part of a working eBGP confi guration on Router R1?（）A
router bgp 1B
neighbor 2.2.2.2 remote- as 2C
neighbor 2.2.2.2 update - source loopback1D
neighbor 2.2.2.2 multihop 2
考题
多选题Which two statements about the bgp deterministic-med and bgp always-compare-med commands are true？（）AThe bgp deterministic-med command is used to influence the BGP route selection process to cause the MED attribute to have higher precedence over the AS path lengthBThe bgp always-compare command is used to influence the BGP route selection process to cause the MED attribute to have higher precedence over the AS path systemCEnabling the bgp deterministic-med command ensures the comparison of the MED variable when choosing routes advertised by different peers in the same autonomous system.DEnabling the bgp always-compare-med command ensures the comparison of the MED variable for paths from neighbors in different autonomous systems.EThe bgp deterministic-med and bgp always-compare-med commands are enabled by defult.
考题
多选题In which three ways are C-BGP and E-BGP sessions similar?（）ABoth are configured as type external.BBoth configurations use the peer-as command.CNeither advertises the local-preference attribute.DBoth set next-hop self when advertising routes to peers.EBoth modify the AS-path attribute when advertising routes.
考题
单选题When BGP is used as the PE-CE routing protocol, which of these statements is correct?（）A
On the CE router, PE neighbors must be configured in the VRF context on the CE routerB
On PE routers, the CE IBGP neighbors are configured in the global BGP configurationC
On PE routers, the CE EBGP neighbors are configured in the VRF contextD
A separate BGP process must be used on the PE routers for CE routers so that they do not use the same BGP routing process as that used for the PE router's other provider neighbors
考题
单选题Given the following policy: Which action occurs when the static route 192.168.0.0/25 is evaluated by the policy main-policy?（）A
The route is not advertised into BGP.A.The route is not advertised into BGP.B
The route is advertised into BGP with metric 10.B.The route is advertised into BGP with metric 10.C
The route is advertised into BGP with metric 20.C.The route is advertised into BGP with metric 20.D
The route is advertised into BGP with default metric.D.The route is advertised into BGP with default metric.
考题
单选题Which statement would prevent the sending of redundant route advertisements when your routereflector cluster is fully meshed?（）A
set protocols bgp group mygroup path-selection cisco-non-deterministic;B
set protocols bgp group i-bgp no-aggregator-id;C
set protocols bgp group mygroup no-client-reflect;D
set protocols bgp group i-bgp damping;
考题
单选题Which statement would prevent the sending of redundant route advertisements when your route reflector cluster is fully meshed？（）A
set protocolbgpgroupmygrouppath-selectioncisco-non-deterministic；B
set protocolbgpgroup i-bgp n-aggreator-id；C
set protocolbgpgroupmygroup no-client-reflect；D
set protocolbgpgroup i-bgp damping
考题
多选题A router is running BGP and receives more than one route for a particular prefix. Assume all the routes for this prefix have the same attributes. Which three path features would be reasons be for the rou ter to ignore some of the routes and not consider them as candidates for the best path?（）Apaths from an internal BGP (iBGP) neighbor if the local autonomous system (AS) appears in the AS_PATHBpaths for which the NEXT_HOP is inaccess ibleCpaths from an external BGP (eBGP) neighbor if the local autonomous system (AS) appears in the AS_PATHDpaths for which the NEXT_HOP is accessibleEpaths that are marked as synchronized in the show ip bgp outputFpaths that are marked as not synchronized in the show ip bgp output
考题
单选题Which action does a BGP speaker take when it detects that the reset state bit is set in an openmessage?（）A
It tears down the BGP session.B
It sends a restart message to the peer.C
It marks all routes from that peer as stale.D
It sends a BGP refresh message to the peer
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