Juniper JNCIA-Junos (JN0-102) Full Pack

Explore the OSI seven-layer model and the TCP/IP four-layer suite, compare their history and roles, and understand routing, addressing, and the standard protocols enabling internet communication.

Compare tcap and udp, showing tcap as a connection-oriented transport layer protocol with handshake, sequencing, acknowledgments, and flow control, while udp remains connectionless; both enable multiplexing using ports.

Explore Ethernet basics, distinguishing wired and wireless LANs from 10base-t to 100gbase. Learn cable types: coaxial, twisted pair, fiber, and rules for straight-through, crossover, rollover cables with RJ-45 connectors.

Learn mac addresses and llc roles in ethernet, including 48-bit mac and oui-based uniqueness, hex presentation, and the ethernet frame structure with preamble, mac fields, type, payload, and crc.

Explore IPv6 basics, including 128-bit hexadecimal addresses, colon notation, header improvements, and global, unique local, link-local unicast types with transition tools.

Learn how to convert decimal numbers to binary and vice versa using division by two, remainder tracking, and place-value methods. Explore practical examples.

Explore Ethernet devices from bus topology to repeaters, hubs, bridges, switches, and routers. Learn how carrier sense with collision detection, collision domains, and broadcast domains shape network performance.

Explore Junos CLI basics, including serial console, management port, and web interfaces, and learn to navigate operational and configuration modes, with help, completion, and pipes.

Learn to emulate Juniper devices inside Genesis 3 by importing Junos OVA files into VirtualBox, reinitializing MAC addresses, and powering up linked Juniper routers for hands-on labs.

Introduction to Junos presents a Unix-based, FreeBSD-inspired OS with modular kernel services, separation of control and data planes, routing and forwarding engines, and ICMP handling with DoS protection.

Explore Juniper routers, switches, and security products across edge, service provider, and data center deployments. See edge routers, carrier-grade switches, and next-generation SRX firewalls with UTM for secure networks.

Explore the Juniper Jweb interface, compare cli and gui options, then connect via ip and use the configure, monitor, maintain, and troubleshoot tabs to manage interfaces and routing.

Explore the Junos statement hierarchy from root to leaf, navigating configuration and operational modes with top, up, and exit, and understand hierarchical interfaces and IP address configuration.

Configure Juniper devices via SSH or Telnet, assign an IP to an interface, enable remote access, set login banners and idle timeouts, and define user classes.

Create and save a configuration rescue in operational mode, and delete rescue configurations when needed. Roll back to the rescue configuration with the rollback rescue command, then commit to apply.

Explore Junos interfaces across five types: management, internal, network, service, and loopback. Learn to configure physical and logical properties, assign IP addresses, and use dot notation for brevity.

Configure snmp on Junos devices to monitor with MIB objects and poll-and-response from an nms. Set read-only community, traps, and version 2 for secure monitoring and alerts.

Learn to use show and monitor commands to inspect a Junos device, including system and chassis status, interface traffic, and packet capture with a tcap dump utility.

Explore routing basics, including connecting subnets, routing tables, and active routes. Compare static and dynamic routing, IGP and BGP protocols, autonomous systems, and how Junos selects the best path.

Configure static routes on Junos devices, set default routes, and enable reverse lookup with resolve. Troubleshoot with ping and traceroute and explore floating static routes.

Discover ospf basics, a link-state routing protocol that uses lsas and an lsdb to run the shortest path first algorithm, converge quickly, and support area 0 backbone.

Configure OSPF on Junos routers in area zero, enable interfaces, and apply passive on interfaces with no neighbors; verify convergence and routes with show commands.

Learn routing policy basics, including import/export policies, default behaviors, redistribution, and how prefix lists and route filters enable precise policy chaining and testing.

Explore how firewall filters act like access control lists, inspect each packet statelessly, apply named terms with match conditions and actions, and default to discard unmatched traffic.

Configure a firewall filter as an access list to block ftp from the Windows 7 host (IP 192.168.56.40) and apply it on the interface for outgoing traffic, port 21.

Configure firewall filters as policers to shape traffic between a system and Juniper router. Define a policer with burst limits and apply it on an interface to enforce ICMP limits.

Learn how to run jweb in gns3 by installing the Juniper jweb package, copying it to the device, and enabling mgmt services for the web interface.