单项选择题 A company is using RADIUS to authenticate login requests to its Juniper Networks routers. Usersshould still be able to authenticate using the local password database but only if the RADIUS server is unreachable. Which JUNOS software configuration accomplishes this goal?（）

多项选择题 Given the output from a show route extensive command (some information removed): 10.10.0.0/16(2 entries, 1 announced) Communities: 64512:666 90:4070 5834:66 172.16.1.0/24(1 entries, 1announced) Communities: 65000:1696 1234:666 50:7090 172.16.20.0/22 (3 entries, 1 announced)Communities: 65544:1000 80:1001 8431:14952 192.168.33.64/26 (2 entries, 1 announced) Communities:10:4307 9231:1071 64512:999 Which two routes appear when a show route community 64512:* command is executed?（）

单项选择题 Which BGPv4 authentication type is supported in JUNOS software?（）