Portfolio
Networking labs
Packet Tracer builds from the CompTIA A+ / Network+ study track. Open a lab for the topology, configs, and verification; labs with a .pkt file can be downloaded and opened in Cisco Packet Tracer.
Junior network engineer portfolio · Cisco Packet Tracer
Lab 01 — Two-Subnet Office LAN
A small office with Sales and Ops on two /26 subnets, joined by a single 2911 router. Built in Packet Tracer with IOS CLI, a security baseline, verification, and four break/fix scenarios.
Cisco Packet TracerSubnetting /26Star topologyCompTIA A+ / Network+
Junior network engineer portfolio · Cisco Packet Tracer
Lab 02 — Centralized DHCP with Relay Agents
Three sites joined by /30 point-to-point links. Miami and New York have no local DHCP server: each city router relays DHCP requests across the WAN to a server in the data center. Covers DORA, giaddr, scopes, static routing, and a real troubleshooting log.
Cisco Packet TracerDHCP relay (ip helper-address)Subnetting /26 and /30Static routing
Junior network engineer portfolio · Cisco Packet Tracer
Lab 03 — Troubleshooting Speed Run: “I Can’t Reach the Website”
A user cannot open a website, but a coworker can. Download the Packet Tracer file, skip the setup, and work the fault from the bottom up: link, IP config, gateway, routed path, name resolution. Each step shows the command, why it is run, what healthy looks like, and what a different result means.
Cisco Packet TracerLayered troubleshootingDNSRouting across a gateway