Which network mask is the equivalent of 255.255.248.0?（）

单项选择题You have just issued the command user@router# save current.conf Assuming the default settings, where in the file system is current.conf saved?（）

A. /var/tmp/
B. /var/config/saved/
C. /var/home/user/
D. /config/

单项选择题Which command will display the contents of the forwarding table?（）

A. show route forwarding-table
B. show forwarding
C. show configuration

单项选择题Which operational mode command can be used to synchronize the local system time with an NTP server?（）

A. set ntp time 64.32.129.3
B. set clock ntp 64.32.129.3
C. set time 64.32.129.3
D. set date ntp 64.32.129.3

多项选择题Which two statements are true about the primary address on an interface?（）

A. It is the address used by default as the local address for broadcast and multicast packets sourced locally and sent out of the interface
B. You use the primary address when you have multiple IP addresses belonging to the same subnet on the same interface
C. It can be useful for selecting the local address used for packets sent out of unnumbered interfaces when multiple non-127 addresses are configured on the loopback interface
D. By default, the primary address on an interface is selected as the numerically highest local address configured on the interface

多项选择题You are modifying the default route preference under the [edit protocols] hierarchy. In which two routing information sources can you change the default preference value?（）

A.local
B.OSPF
C.direct
D.BGP