What is a virtual router?

A.
ANetScreendevice that has been configured for route mode

B.
The interconnection between aNetScreendevice and a 3rdparty router

C.
The logical separation of one physicalNetScreendevice into multiple separate route tables

D.
The physical connection between two separateNetScreendevice into a single logical router

Explanation:

ScreenOScan divide its routing component into two or more virtual routers. A virtual router (VR) supports static routing, dynamic routing protocols and multicast routing protocols, which you can enable simultaneously in one VR. There are two predefinedVRson Juniper Networks NetScreendevices:
trust-vr, which by default contains all predefined security zones and any user-defined zones untrust-vr, which by default does not contain any security zones You cannot delete the trust-vroruntrust-vrVRs. On someNetScreendevices, however, you can create and
configureadditionalVRs. You can configure certain parameters for the predefined and custom VRs
MultipleVRscan exist, buttrust-vris the default VR. In the VR table an asterisk (*) designates trust-vras the default VR in the command line interface (CLI). You can view the VR table with the getvrouterCLI command. To configure zones and interfaces within otherVRs , you must specify the VR by name, such asuntrust-vr.