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.

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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

单项选择题

Given the topology displayed in the exhibit.

All links have an OSPF metric of 10.The link between Router A and Router B is in area 0.0.0.0. All other links are in area 0.0.0.1.What does Router A do with packets destined for Network Z？（）

A.Forwards them to Router B
B.Forwards them to Router C
C.Detects a routing loop and discards them.
D.Forwards them to Router B and Router C alternately.

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