Firewalls: Packet Filters
By Joseph Wetzel, Douglas Tabbutt
In this learning activity you'll create a packet filter.
Dynamic Host Configuration Protocol
By Terry Bartelt
In this learning activity you'll examine the software operation Dynamic Host Configuration Protocol (DHCP), which automatically performs TCP/IP configurations.
Learners consider the most common types of electromagnetic waves and the kinds of hardware used in a wireless network. A short quiz completes the activity.
Firewall: Network Address Translation/Port Address Translation
In this learning activity you'll examine how network address translation works.
By Joseph Wetzel
In this learning activity you'll explore how port scanning is commonly used by hackers to infiltrate a network and how IT security professionals can detect it.
Components of a Data Center
In this learning activity you'll describe the typical components of a data center.
By Dawn Rohm
You'll be introduced to the Go-Back-N ARQ, learn what it is, and find out how it's used to keep track of data sent between networked computers.
In this learning activity you'll examine how a large computer network is configured.
Clients and Servers
In this learning activity you'll observe how computers operate in a client-server network operating system and consider the advantages and disadvantages of such a system.
In this learning activity, you'll examine the different ways in which computers and other equipment are physically connected in local area networks and the advantages and disadvantages of each topology.
In this learning activity you'll examine how routers transfer data between local area networks and the Internet.
In this learning activity you'll explore the process that servers follow to take a name entered on a computer browser and convert it to an IP address.
An Algorithm for Converting a Binary Number to a Decimal Number
By Kevin Ritzman
In this learning activity you'll examine two methods for converting a binary number to a decimal number.
Man in the Middle Attacks with ARP Poisoning
In this learning activity you'll identify Man-in-the-middle attacks and discuss how they affect network security.
Virtual Private Networks (VPN)
In this learning activity you'll explore how VPN is used to create a secure connection between two networks.
Subtracting Binary Numbers by Adding the 2's Complement
In this learning activity you'll solve three binary subtraction problems using the 2's complement method.
Firewall: Stateful Packet Inspection
In this learning activity you'll examine a stateful packet inspection firewall that keeps track of legitimate Internet service requests, also known as dynamic packet filtering.
By Joseph Wetzel, Jeff Sonnleitner
In this interactive activity, learners insert the router terms that each acronym stands for. Each of the acronyms is formed from the key letters in a term that relates to routers.
CRC – Cyclic Redundancy Check
In this learning activity, you’ll be introduced to what the CRC is, the technology behind it, and how it’s performed.
Switches and Hubs
Learners view animations showing how hubs and switches work in local area network configurations.
The IP Address Format
In this learning activity you'll examine the format of an IP address and interpret the octet by converting between decimal and binary numbers.
Port Scanning - Common Network Protocols
In this learning activity you'll explore three common network protocols that computers use to communicate in a network.
How the Ethernet Works
In this learning activity you'll explore how computers connected on a network use Ethernet technology.
How Switches Increase Speed
In this learning activity you'll observe how switches are used in local area networks to increase data transmission speeds.
IP Addressing and Subnetting
In this learning activity you'll review how a local area network computer uses a subnet mask to determine if its message is intended for a computer on the same network or on a remote network.