JN0-105 Exam Dumps : Junos - Associate (JNCIA-Junos) 2025 Exam

In Junos OS, the dedicated out-of-band management interface is typically named fxp0. This interface is used exclusively for management traffic and is physically separated from the data traffic interfaces. It allows administrators to perform management tasks even when the device is experiencing issues that affect the forwarding plane.

From the JNCIA-Junos Study Guide and Junos OS Documentation:

“The fxp0 interface is a dedicated management interface that provides out-of-band management access. It is commonly found on Juniper routers, switches, and security platforms. You assign IP addresses to this interface as you would any other, and it is often used to connect to a management network or to allow SSH, Telnet, or SNMP access.”

— Junos OS Fundamentals, Chapter: Interfaces

— Junos OS Documentation: Management Interfaces Overview

— JNCIA-Junos Exam Objective: Interface Types

Referring to the exhibit, the presence of the "+" symbol next to the OSPF route for 192.168.100.2/32 indicates that this is the active route being used to forward traffic. The BGP route, although present, does not have the "+" symbol, indicating it is not the active route. In Junos OS, the routing table displays the active route with a "+" symbol, and the fact that the OSPF route has this symbol means it is the preferred path based on the routing protocol's decision process, which takes into account factors such as route preference (administrative distance) and metrics.

The Network Time Protocol (NTP) is designed to synchronize the clocks of computers over a network. Configuring NTP on a Junos device ensures that its clock is set accurately, which is crucial for logging, troubleshooting, and maintaining the integrity of time-sensitive operations and security protocols. NTP allows devices to use a hierarchy of time sources, from primary servers synchronized to a reference clock (such as an atomic clock or GPS time) to secondary servers that distribute the time to other devices on the network.