Which account is used to access a Junos device in a factory-default configuration?（）

单项选择题What must be configured prior to the first commit after factory defaults are loaded?（）

A. root authentication
B. default gateway
C. hostname
D. management services

单项选择题What represents the binary equivalence of 207?（）

A. 11001111
B. 11101011
C. 11010111
D. 11010101

多项选择题Whitch three user authentication methos are supported by the Junos OS?（）

A. RADIUS
B. CHAP
C. local user database
D. tacacs+
E. PAP

单项选择题What is the default import routing for OSPF?（）

A. Accept all OSPF routes and install them into the 3 routing table
B. Accept all OSPF routes and install them into the inet7.0 routing table
C. Accept all OSPF routes and install them into the inet4.0 routing table
D. Accept all OSPF routes and install them into the inet.0 routing table

单项选择题When using the monitor traffic command on Junos devices, which UNIX-based utility is accessed?（）

A. snoop
B. tcpdump
C. monitor
D. tail