多项选择题Which two statements are true when configuring a domain-id?()

A.The default OSPF domain-id is 127.0.0.1.
B.It most cases, a domain-id must be configured.
C.It most cases, you do not need to configure a domain-id.
D.For a layer 3 VPN connecting multiple OSPF domains, configuring a domain-id can help control LSA translations.


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1.单项选择题Which condition must be met to allow a PE router to forward VPN traffic across a LSP in a Layer 3 VPN environment?()

A.The BGP next hop must be in inet.1.
B.The BGP next hop must be in inet.3.
C.Must have a bidirectional LSP configured.
D.Must have a static route to allow an RP for connected interfaces.

2.单项选择题How is the cost of a virtual link in OSFP calculated?()

A.Takes the metric of the outgoing interface.
B.Uses the metric that is assigned during configuration.
C.Uses the path metric to reach the virtual neighbor.
D.Uses a default of zero unless otherwise specified.

3.单项选择题What is the function performed by LSA Type 1?()

A.Create virtual links.
B.Advertise external prefixed.
C.Summarize routes between areas.
D.Advertise a router’s interfaces and metrics.

4.多项选择题Which three authentication options does OSPF support?()

A.DES
B.MD5
C.Kerberos
D.Unauthenticated
E.Simple password

5.单项选择题Routers A and B have an OC12c and a GE link between them and are running OSPF over both of these links.Which item is correct, assuming the default JUNOS software OSPF metric calculation?()

A.There are two equal cost paths between A and B
B.The GE link is the preferred path between A and B
C.The OC12c link is the preferred path between A and B
D.Manual metric assignment must be configured to determine the outcome.

6.多项选择题You want to limit the number of Type 7 LSAs to be converted into Type 5 LSAs at an appropriate ARB. Which two commands should you use from the [edit] hierarchy level within the JUNOS software configuration mode?()

A.set protocols ospf area-range network/mask-length
B.set protocols ospf area area-id nssa area-range network/mask-length
C.set protocols ospf area area-id area-range network/mask-length restrict
D.set protocols ospf area area-id nssa area-range network/mask-length restrict

8.单项选择题Which LSA is used in JUNOS software when a OSPF router restarts?()

A.LSA Type 6
B.LSA Type 9
C.LSA Type 10
D.LSA Type 11

9.多项选择题In which two ways can the router ID selection be controlled?()

A.Manually assign RID
B.Configure local-address
C.Enable the fxp0 interface
D.Assign nonmartian address to lo0.

10.单项选择题In JUNOS software, which would prevent an OSPF router from importing the 10.0.0.4/30 summary route?()

A.Import policies are not allowed, so this is not possible.
B.Export policies are not allowed, so this not possible.
C.Apply a firewall filter matching 10.0.0./4/30 and reject the route.
D.Apply an import policy matching 10.0.0.4/30 and reject the route.