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WEEK 02

Networking I — OSI & TCP/IP

Operational scenario

A help-desk ticket says 'the internet is down' for one floor. Trace the packet's journey layer by layer to find where it breaks.

Week completion
0%
~10 hours this week
Assessment: Knowledge check 2; acronym quiz 2
Deliverable: Network diagram v1
Learning objectives
  • Map each OSI layer to its function, protocols, devices, data units, attacks and controls
  • Explain the TCP/IP model
  • Read device labels and specs
Classroom topics
  • Seven OSI layers
  • TCP/IP model
  • IPv4 / IPv6
  • Ports & protocols
  • Data flows
Standards · vocabulary
NIST CSF (Identify)CIS Control 12
IPMACARPTCPUDPDNSDHCP
Open glossary
Competency demonstrated: Explains how data travels across a network.

Four-mode learning matrix

~1.5 h
Physical hands-on lab

Cable a segment; verify addressing; read device labels and specs.

~2 h
Docker container lab

Lab 2 — Images, containers, networks, ports and volumes.

~0.5 h
AR/VR immersive scenario

Walk the seven OSI layers; watch a packet traverse them. Role: Network engineer.

No headset? Desktop OSI viewer + worksheet. Printed and mobile versions are also available.

Individual technical assignment

Label a packet's journey across all seven layers.

Team exercise

Diagram the lab network and its data flows.

Required hardware
  • Switch
  • Router
  • Cable tester
  • Workstation
Required software
  • Docker
  • ipconfig / ifconfig
  • Wireshark
Workplace application

Troubleshooting and incident triage both start with knowing which layer failed.

Docker progression step
L2 Images, containers, networks, ports and volumes

List images, containers, networks and volumes; explain what each port binding does.

Open the Docker range
Lab evidence to collect
Safety controls — confirm before starting
Reflection & rubric for week 2