Which OSPF LSA type does an ASBR use to originate a default route into an area？ （）

单项选择题WhichoneofthesestatementsistrueofOSPFtype5LSAs？（）

A. They are used to summarize area routes to other areas.
B. They are used in not-so-stubby areas to propagate external routes.
C. They are used to notify areas of the ASBR.
D. They are flooded to all areas except stub areas （external route）.

单项选择题WhenaBGProuterisnotcapableofunderstanding4-byteASnumbers，itwillsee4-byteASnumbersasaspecial，reserved，2-byteASnumberintheASpath.Which2-byteASnumberisthisreservedone？（）

A.00000
B.12345
C.23456
D.65000
E.99999

单项选择题DuringtheIPv6addressresolution，anodesendsaneighborsolicitationmessageinordertodiscoverwhichofthese？（）

A. The Layer 2 multicast address of the destination node
B. The solicited node multicast address of the destination node
C. The Layer 2 address of the destination node based on the destination IPv6 address
D. The IPv6 address of the destination node based on the destination Layer 2 address

多项选择题WhichtwotunnelingtechniquesinIPv6donotrequireanIPv4tunneldestinationintheconfiguration？（）

A.6to4
B.6over4
C.ISATAP
D.GRE

多项选择题WhichtwoofthefollowingareconsideredvalidrouterIDsforEIGRPv6？（）

A.0.0.0.1
B.0.255.0.1
C.2001：DB8：：1
D.2001：DB8：ABCD：FEEF：：1