THe IT essentials lab is mostly concentrated on the PCs so I would suggest one or two routers and and then connect to 1 or two switches depending on how many pcs you have. IT is the PCs that are important.
Here is the latest recommended equipment list.
Academies adopting IT Essentials Lab PC Hardware Requirements In order to be able to implement the different topologies that are used in the lab exercises of the ITE curricula, Academies teaching the course require the following equipment at a minimum: – 1 PC Case with 300W power supply – 1 PCI, PCIe, or AGP-compatible motherboard – 1 Intel or AMD CPU, 1 gigahertz (GHz) or faster with support for PAE, NX, and SSE2 – 1 CPU heat sink and cooling fan – 2 gigabyte (GB) RAM (32-bit) or 4 GB RAM (64-bit) (2 X 1GB or 2 X 2GB suggested)
§ Some labs will require one module of RAM to be uninstalled or the simulation of a faulty module for
– 60 GB hard drive (minimum); 80 GB or more (recommended)
§ The system must support a full install of Windows and two partitions of the same size
– 1 DVD-ROM (minimum), DVDR, or BD/BDR – 1 Ethernet Card (If the motherboard does not have an Ethernet port) – 1 Wireless network adapters (compatible with the wireless router) – 1 PCI, PCIe, or AGP (recommended) video card
§ DirectX 9 graphics device with WDDM 1.0 driver
– Cables to connect HDD/CD (Quantities vary) – 1 Mouse – 1 Keyboard – 1 Super VGA (1024 X 768) or higher-resolution video monitor Additional Lab Equipment Required In addition to the equipment specified above, the lab topologies of ITE require the use of the following equipment and accessories: Windows 10 Home to install on lab computers – 1 Internet connection for Internet searches and driver downloads (this could be the instructor's workstation) – 1 printer or integrated printer/scanner/copier for the class to share – 1 wireless router with WPA2 support for the class to share – Ethernet cable and RJ-45 connectors for building and testing working cables – Various USB flash drives for moving files between computers in the labs
you may want to down load an evaluation copy of Windows 10 as it is used in a lot of the labs.
This version can be used for 90 days which is ample for the students to do the IT Essentials Windows labs