Which command configures an address of 192.168.1.1 with a mask of 255.255.255.0 on interface ge-0/0/0?

A. set ip interface ge-0/0/0 address 192.168.1.1 255.255.255.0

B. set ip interface ge-0/0/0 address 192.168.1.1/24

C. set interface ge-0/0/0 ip4 address 192.168.1.1 mask 255.255.255.0

D. set interfaces ge-0/0/0 unit 0 family inet address 192.168.1.1/24

The following configuration is sufficient to get a Fast Ethernet interface up and running. By default, IPv4 Fast Ethernet interfaces use Ethernet version 2 encapsulation.

[edit]

user@host# set interfaces fe-5/2/1 unit 0 family inet address local-address

References: http://www.juniper.net/documentation/en_US/junos12.3/topics/example/interfaces-configuring-fast-ethernet-interfaces.html