Which of the following are common issues that should be considered when establishing ortroubleshooting site-to-site VPNs？（Choose all that apply.）（）

多项选择题WhichofthefollowingareTACACS+characteristics？（Chooseallthatapply.）（）

A.Cisco proprietary
B.Standards-based protocol
C.Provides separate services for authentication， authorization， and accounting
D.Encrypts only the password
E.Uses UDP for a transport layer
F.Encrypts the entire packet

单项选择题Whichofthefollowingcommandswillremovealldynamicentriesforarouter’sNATtable？（）

A.clear nat translations
B.clear ip nat translations*
C.clear ip nat statistics
D.clear ip nat transactions*
E.clear ip nat translations
F.clear ip nat translations all

多项选择题Whichofthefollowingarecorrectstatements？（）

A.EIGRP advertises the best routes to its neighbor
B.EIGRP uses "cost" to determine best path
C.EIGRP allows unequal cost load balancing
D.OSPF requires neighbor adjacencies before updates are sent
E.EIGRP advertises all routes to its neighbor
F.OSPF allows unequal cost load balancing

多项选择题Whichofthefollowingarebyproductsofastructuredmaintenanceplan？（Chooseallthatapply.）（）

A.Predictable security vulnerabilities
B.Economies of scale
C.Improved expenditure forecasts
D.Increased downtime
E.Predictable equipment obsolescence
F.Consumption of fewer resources

多项选择题WhichofthefollowingstatementsconcerningIGMParecorrect？（Chooseallthatapply.）（）

A.With IGMPvl， queries are sent to a specific group
B.Hosts issuing IGMPvl requests will be correctly interpreted by IGMPv2 hosts due to backwardcompatibility
C.An IGMPv2 router will ignore IGMPv2 leave messages when IGMFVl hosts are present
D.With IGMFV2， a leave message is supported
E.An IGMPv2 host will send an IGMFVl report on an IGMFVl router
F.An IGMPv2 router can only allow IGMPv2 hosts to execute a join request