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单项选择题You have a Level 1-only router （Router A） in IS-IS area 49.0001. How does Router A learn how to get to IP prefixed in other areas？（）

A.Router A must have a Level 2 adjacency with the Level 1/Level 2 router in area 49.0001.
B.The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 2 LSP it floods into area 49.0001.
C.The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 1 link-state PDU （LSP） it floods into area 49.0001.
D.The Level 1/Level 2 router in area 49.0001 advertises these prefixed into area 49.0001 using a Level 2 LSP it floods into the area.

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1.多项选择题Which two are valid IS-IS PDU types？（）

A.broadcast hellos
B.Level 1 LAN hellos
C.Point-to-point hellos
D.Level 2 point-to-point hellos

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2.多项选择题What are three applications for firewall filters in JUNOS software？（）

A.route filtering
B.protect the routing engine
C.securing the router control plane
D.protect against hidden bridge loops
E.protect against denial of service attacks

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3.单项选择题You have a firewall filter containing two terms applied in an inbound direction on a customer interface. You would like this filter to protect your network from a spoofed denial of service attack. What match criterion should be used in the first term of the filter？（）

A.Source TCP port
B.Source IP address
C.Destination TCP port
D.Destination IP address

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4.单项选择题Which JUNOS software feature allows a user to define specific next-hop values for IP packets based on the source IP address of that packet？（）

A.MPLS
B.Load Balancing
C.Class Based Forwarding
D.Filter Based Forwarding

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5.单项选择题Which extension to the OSPFv2 protocol supports traffic engineering？（）

A.LSA Type 8
B.LSA Type 9
C.LSA Type 10
D.Transparent LSA

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6.单项选择题When using OSPF as your IGP， which operational command must be enabled to populate the TED for CSPF calculations？（）

A.cspf enable
B.disable no-cspf
C.traffic-engineering
D.enable traffic-engineering-database

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7.多项选择题 Given the community：
communitymy-company members "^[1-3]*7：666$"；
Which four communities does this expression match？（）

A.17：666
B.17：667
C.27：666
D.37：666
E.47：666
F.777：666
G.117：666

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8.单项选择题Which choice describes the JUNOS software default policy action for BGP routes？（）

A.IBGP peers
B.EBGP peers
C.Active BGP peers
D.Established BGP peers

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9.单项选择题By default， to which peers will a BGP router advertise routes learned from IBGP peers？（）

A.all BGP peers
B.all IBGP peers
C.all EBGP peers
D.all MBGP peers

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10.单项选择题 Which action occurs when the policy main-policy evaluates the BGP route 10.0.55.2/32？（）
[edit policy-options]
policy-statement test {
from {
route-filter10.0.0.016/orlongeraccept；
route-filter10.0.67.0/24orlangerreject；
route-filter10.0.0.0/8orlanger；
}
then {
metric10；
community add no-advertise；
accept；
}
}
policy-statement main-policy {
term only-want-certain-routes {
from {
policytest；
}
then {
communityadd harry-402；
accept；
}
}
}
communityno advertise members no-advertise；
communityharry-402 members 666：402；
[edit protocols]
bgp {
exportmain-policy； }

A.The route is not advertised into BGP
B.The route is advertised into BGP with community harry-402.
C.The route is advertised into BGP with community no-advertise.
D.The route is advertised into BGP with community harry-402 and no-advertise.

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