When a non-root user connects to a JUNOS platform and enters a username and password， the user is immediately placed at which level？（）

单项选择题OnaJuniperrouter，whatisthedefaultfileusedforsyslogmessages？（）

A.system
B.errors
C.security
D.messages

单项选择题Whatistheinterfaceconnectingtheroutingenginetothepacketforwardingenginecalled？（）

A.Loopback 0
B.management
C.internal（fxp1）
D.control interface

单项选择题OnaJuniperRouter，whereistheJUNOSsoftwarelocated？（）

A.EPROM
B.Zip drive
C.hard drive
D.compact flash

单项选择题IfthePFEdoesnothavearoutetothedestinationaddressofapacket，whichactionwillbetaken？（）

A.The PFE floods the packet out of all interfaces.
B.The PFE drops the packet and sends a destination unreachable notification back to source device.
C.The PFE forwards the packet to the routing engine for further processing.
D.The PFE queues the packet and sends a request for a layer 3 lookup to the routing engine.

单项选择题Inwhichmodeareusersallowedtoconfigurethedevice，includinginterfaces，protocols，useraccess，andsystemhardwareproperties？（）

A.priviledged mode
B.configuration mode
C.monitoring mode
D.operational mode