WhichthreeauthenticationoptionsdoesOSPFsupport？（）……

单项选择题RoutersAandBhaveanOC12candaGElinkbetweenthemandarerunningOSPFoverbothoftheselinks.Whichitemiscorrect，assumingthedefaultJUNOSsoftwareOSPFmetriccalculation？（）

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.

多项选择题YouwanttolimitthenumberofType7LSAstobeconvertedintoType5LSAsatanappropriateARB.Whichtwocommandsshouldyouusefromthe[edit]hierarchylevelwithintheJUNOSsoftwareconfigurationmode？（）

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WhichLSAisusedinJUNOSsoftwarewhenaOSPFrouterrestarts？（）

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

多项选择题InwhichtwowayscantherouterIDselectionbecontrolled？（）

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