By default, which character indicates the UNIX shell prompt?（）

单项选择题Referring to the exhibit, which statement is correct?（）

A. The packets have exceeded the time-to-live value
B. There is a loop
C. The asterisks indicate a response time out
D. The asterisks indicate that the traceroute is completed.

多项选择题Which two statements are true regarding an Ethernet collision domain?（）

A. If a switch is used, the collision domain is limited to each device and the switch
B. If a hub is used, the collision domain is limited to each device and the hub
C. If a hub is used, the collision domain includes all devices connected to the hub
D. If a switch is used, the collision domain includes all devices connected to the switch

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