Which two statements are true regarding an Ethernet collision domain?（）

多项选择题Which two statements accurately describe a broadcast domain?（）

A. Broadcast domains require that the participating devices connect to common switches or hubs
B. Broadcast domains consist of devices reachable by frames addressed to the Layer 2 broadcast address
C. Broadcast domains require a gateway device such as a router
D. Broadcast domains consist of devices that reside on the same VLAN

单项选择题What is an advantage of multiple software processes running in the Junos OS?（）

A. Each process has its own protected memory space
B. Each process is started manually by the user at boot
C. All processes are dependent on each other
D. Multiple processes allow each routing protocol to be independent

多项选择题What are two reasons why a route might be hidden?（）

A. route preference
B. routing loop
C. invalid next hop
D. routing policy

多项选择题Which two login-class permissions could permit a user to view the system hierarchy of the active configuration?（）

A. system permission
B. view-configuration permission
C. network permission
D. super-user permission

单项选择题Which statement is true regarding the Junos OS?（）

A. The Junos kernel is based on the Solaris operating system
B. The Junos kernel is based on the GNU Zebra operating system
C. The Junos kernel is completely original and not based on any other operating system
D. The Junos kernel is based on the FreeBSD UNIX operating system