Juniper JNCIA-Junos - NEW JN0-105 Complete Course

Explore Junos OS architecture built on a FreeBSD Unix-based kernel, where daemon processes isolate tasks for stability. See how RPD, MGD, and DCCD run in the background to manage routing.

Explore the control and forwarding planes, focusing on the routing engine and the packet forwarding engine. See how the routing table feeds the forwarding table to enable transit traffic.

Differentiate transit traffic, which is handled by the packet forwarding engine using the forwarding table, from exception traffic, which is destined for the device and processed by the routing engine.

Explore the junos cli overview, including the freebsd shell, operational and configuration modes, and prompt recognition. Use show commands to monitor, configure, and navigate the cli prompts effectively.

Learn to navigate Junos CLI hierarchy, enter edit mode, set routing instance types (VRF or VCF), and use the help system and output filtering to compare candidate and active configurations.

Explore how Junos OS differentiates candidate and active configurations, and how commits, commit check, and commit confirm safeguard connectivity in a hands-on lab.

Master Junos configurations by loading and viewing configs, comparing candidate and active, rolling back past commits, and using load options merge and override to manage saved files.

Explore the Junos OS web interface (J-Web) for configuring and monitoring devices, using setup wizards, dashboards, monitoring tabs, and CLI fallback to manage firewall policies, VPN, NAT, and troubleshooting.

Configure the Junos OS initial configuration by identifying factory defaults, setting the host name and root password, and enabling NTP, SNMP, syslog, and a local admin user before committing.

Configure Junos authentication by defining login classes for role based access control, choose authentication methods (radius, tacacs+, local), and manage permissions, command allowances, and order behavior.

Explore Juniper device interfaces, differentiate network and special interfaces, and memorize the five types—permanent, transient, network, service, and container—plus the interface naming scheme fpc pic port unit and related terms.

Explore how Junos logs and traces work, locate log files in /var/log, use syslog facilities and severities, configure log destinations, and create trace options for routing changes.

Explore advanced junos configuration concepts including configuration groups, apply groups, inheritance and excluding inheritance, archiving active configuration, and rescue configuration rollback for resilient device management.

Learn operational monitoring and maintenance by gathering device information with show and monitor commands, and filtering outputs using match, display set, and find in a hands on lab.

Master Junos troubleshooting with practical steps and tools, from interface statistics and duplex checks to BPDU errors, SSH/Telnet access, ping, traceroute, and root password recovery.

Learn to perform software installation and upgrades on Juniper devices, using USB or external sources, validate images, back up with system snapshots, and reboot safely within a maintenance window.

Explore routing tables and forwarding tables in Juniper devices, including the control plane’s role, show route outputs, and how next hops and interfaces are determined.

Explore how Juniper routing tables and routing instances organize unicast and multicast routes, and see how vrf and virtual router instances separate traffic.

Explore how dynamic routing automatically exchanges routes with peers, reroutes around failures, and compares link-state and distance-vector protocols like OSPF, IS-IS, and BGP for scalable networks.

Explore routing policies and firewall filters, focusing on import/export controls that modify routing information, understand top-to-bottom evaluation with from and then statements, and learn tagging and chaining.

Learn how routing policies use match criteria and route filters to control prefixes and attributes, and understand default import and export rules for OSPF, IS-IS, BGP, and RIP.

Explore Junos firewall filters: ingress and egress processing, actions such as accept, deny, reject, and drop; terms from statements, logging, and implicit deny govern filtering.

Learn to configure firewall filters by matching fields like address, port, dhcp, dscp, and icmp, applying them ingress or egress, and using terminating actions like accept, reject, and discard.