多项选择题
A.Units in JUNOS are always required for any interface configured with logical addresses such as IP and IPv6.
B.Units in JUNOS are only required when you are configuring sub-interfaces for inter-VLAN routing.
C.Unit numbers must match the DLCI or VCI numbers configured on the interface.
D.Unit 0 is the only value allowed on interfaces running HDLC, PPP, or for Ethernet interfaces not doing VLAN-tagging.
单项选择题 Which option is correct to configure the maximum transmit packet size of a Fast Ethernet interface?（）
单项选择题 After issuing the show interfaces terse command, you notice that the status of one interface is "up down". What does this indicate?"（）
单项选择题 Which statement is correct about logical units on Juniper Router interfaces?（）