Virtual Labs vs Physical Labs vs Simulators for IT Training

Physical labs give students real hardware but serve one class at a time, simulators imitate devices at low cost for early concepts, and virtual labs run real operating systems and cloud accounts that scale to any class size. Use a simulator to teach basics, a virtual lab for server, cloud and security work, and physical or remote physical gear when a program must show students handled real network devices. Most programs combine two of the three.

The terms overlap, so this guide separates four types, compares them on seven criteria and ends with a table of which to use when. It is written for IT instructors, program chairs and corporate training leads in North America and Europe. Pages that rank for this search compare virtual and physical labs in science education, or a single vendor’s product. None we read compare all three types for IT and networking training together with how certification exams test skills. Facts come from vendor and standards pages read on October 28, 2026.

The four types of IT lab

Type	What the learner runs	Example
Physical lab	Real devices in a room	A rack of routers, switches and firewalls
Remote physical lab	Real devices, shared and reached from a browser	NDG NETLAB+, which “supports real Cisco routers, switches, and firewalls, plus virtual machines”
Simulator or emulator	Software that imitates devices	Cisco Packet Tracer, GNS3, EVE-NG, Cisco Modeling Labs
Virtual lab	Real operating systems and cloud accounts, delivered over the internet	VM and cloud labs on AWS, Azure, Google Cloud or Oracle

NDG, a lab vendor, gives a test for telling a simulator from a virtual lab: “a simulation imitates a system’s behavior; a virtual lab runs the system itself”. Some tools sit in between. Cisco Modeling Labs is a network simulator that gives you “access to real VM images”, and Cisco describes it as “our premier platform for network simulation”.

Physical labs

A physical lab is the most realistic option and the hardest to scale.

• Realism: students handle real hardware, cables and consoles.
• Capacity: NDG notes that “a physical lab room serves one class at a time, in one place, during building hours”.
• Cost: hardware, power and staff. NDG’s NETLAB+ lists an academic price of $9,995 for 16 active pods including first-year maintenance, then $1,995 a year, and the hardware, power and staff come on top.
• Remote access: NETLAB+ lets “learners connect to lab equipment from any location through a web browser” and schedules equipment across classes.
• Limitation: capacity is fixed by the pods you own, and old hardware has to be replaced.

Simulators

A simulator is the cheapest way to teach a concept to a large class.

• Cisco Packet Tracer: an educational tool for network basics. A 2019 IEEE EDUCON study of Packet Tracer in firewall courses calls it “an educational simulation tool”. Students found the material easier to understand, at lower cost, and instructors reported it “reduced the amount of material they could cover”.
• Cisco Modeling Labs: runs real Cisco images. Cisco’s developer page lists a Personal license at $199 or 2 Cisco Learning Credits for 20 nodes, a Personal Plus license at $349 or 4 credits for 40 nodes, and per-concurrent-user education licensing by request.
• GNS3 and EVE-NG: EVE-NG describes its Professional edition as “clientless, multivendor network emulation”, with 1,024 nodes per lab. We could not read GNS3 or EVE-NG pricing and image requirements, so check them before you plan.
• Limitation: a simulator imitates the system, so behavior and output can differ from a real device. Cisco’s own Packet Tracer pages would not load for us, so check its limits on Cisco’s site.

Virtual labs

A virtual lab gives each learner a real machine or cloud account on demand.

• Realism: real Windows and Linux machines, Hyper-V labs and cloud consoles. Skillable describes “instant access to the actual enterprise software and tools used by the industry leaders today”.
• Scale: capacity is metered, not owned. CloudLabs says it can “spin up real cloud environments in under 60 seconds” on Azure, AWS, GCP and Oracle Cloud.
• Grading: CloudLabs describes “auto-graded evaluation in live environments”, and Skillable offers “performance-based assessments for mid-term and final exams”.
• Cost: per user or per hour. CloudLabs publishes VM Labs at $6 per active user a month on a CloudLabs-managed subscription, or $12 if you bring your own. For a 50-learner class with 2,000 lab hours, the virtual IT lab pricing guide puts CloudLabs at about $662 and Skillable at about $2,326 to $2,392.
• Limitation: it needs a connection, and the cost grows with hours used, so set time limits and idle shutdown.
• Related reading: see the 5 reasons to use virtual labs for the infrastructure benefits, and the top 10 virtual lab platforms to compare vendors.

Virtual labs, physical labs and simulators compared

	Physical lab	Remote physical lab	Simulator	Virtual lab
What runs	Real devices	Real devices	Imitated devices	Real operating systems and cloud accounts
Cost model	Hardware, power, staff	Per-pod license plus hardware	Free to low, or per license	Per user or per hour
Scale	One class in one room	Limited by pods and scheduling	Large	Large, metered
Remote access	No	Yes, through a browser	Download or hosted	Yes, through a browser
Reset	Manual rewiring	Automated setup and teardown	Reload the file	Relaunch or reset
Grading	Instructor	Limited	Some built-in	Automated checks in some platforms
Main limit	Capacity	Pods and hardware age	Differs from real devices	Needs a connection and cost control

What certification exams test

Exams test doing, and the format decides how much realism you need.

• CompTIA: says performance-based questions are “delivered as either simulations or within virtual environments”, and that they “test your ability to perform a task or solve a problem using a simulated environment”.
• Cisco CCNA: the 200-301 exam is 120 minutes and costs $300. Its objectives are written as tasks, such as “configure NAT/PAT on IOS XE routers”. The objectives document says nothing about the question format.
• Microsoft: “hands-on experience with the technology is required to successfully pass Microsoft Certification exams”.
• Accreditation: ABET asks for “modern tools, equipment, computing resources, and laboratories appropriate to the program”. It does not say the equipment must be physical.

Which to use when

Situation	Use	Why
Intro class on subnetting and basic commands, small budget	Simulator	Cheap to scale
CCNA or CCNP prep that needs real device behavior	Cisco Modeling Labs or a similar emulator with real images	Runs real Cisco images
Program must show students handled real switches and firewalls	Physical or remote physical lab	Real gear, shared by schedule
Server, cloud, security tools or CompTIA and Microsoft exam tasks	Virtual lab	Real systems, automated grading
Large cohorts with uneven demand	Virtual lab, with a simulator for week one	Capacity is metered

Hybrid designs that work

• Simulator first, virtual lab second: teach concepts on a simulator, then move to real systems for graded tasks.
• Physical plus simulated: a 2015 study by Chan describes a lab that joined physical equipment with GNS3 simulators, which increased lab capacity and reduced repeat classes.
• Remote physical for the core: keep real network gear for a core course, reached over the internet, and run everything else in the cloud.

FAQ

Is a virtual lab the same as a simulator?

No. A simulator imitates a system, while a virtual lab runs the real operating system or cloud service. Some tools, such as Cisco Modeling Labs, are simulators that run real vendor images.

Is Packet Tracer enough for CCNA?

Packet Tracer is a simulation tool, so it imitates devices. It suits early concepts. CCNA objectives are written as configure and troubleshoot tasks, so add practice on real images or devices before the exam.

Are virtual labs as effective as physical labs?

We found no current study comparing them for IT training that we could open. Most comparison research is in science education. Judge by your course: use a virtual lab when the skill is software and cloud, and physical gear when handling hardware is the outcome.

How much does a physical networking lab cost compared with a virtual lab?

A physical lab needs hardware, power and staff, and NETLAB+ adds a license of $9,995 for 16 pods. A virtual lab bills per user or per hour. CloudLabs lists $6 or $12 per active user a month for VM Labs.

Do certification exams use simulations or real environments?

Both. CompTIA delivers performance-based questions as simulations or in virtual environments. Microsoft says hands-on experience is required to pass its exams, and some of its exams include labs.

Conclusion

For IT, cloud and security courses where students must configure real systems, CloudLabs is the best virtual lab option in this comparison.

• Real systems: real Windows and Linux machines and cloud accounts, not imitations.
• Clouds: AWS, Azure, GCP and Oracle Cloud from one platform.
• Speed: environments spin up in under 60 seconds.
• Grading: auto-graded evaluation in live environments.
• Cost: a published $6 per active user a month for VM Labs, or $12 if you bring your own subscription.
• Scale: more than 5 million labs provisioned.

If you teach network basics to a large class on a small budget, start with a simulator. If your program must show students real network gear, use a physical or remote physical lab. For server, cloud and security training, start with CloudLabs.

See CloudLabs virtual labs.

For related guides, see the best cyber range platforms, the best virtual computer labs for universities and the training sandbox environment guide.