Networking Course
2 hours, 4 minutes
Syllabus
Virtual LANs (VLANs)
Video - 00:08:00
Virtual LANs (VLANs) are common features built into almost all switches. VLANs provide superb control of your LAN but have their own quirks that a good tech understands.
Windows firewall
Video - 00:08:00
Like all operating systems, Windows comes with a built-in software firewall. Unlike the firewall on your router, this firewall only protects a single system. It’s important for techs – and the users they support – to understand how to use the Windows firewall.
Routers
Video - 00:11:00
The CompTIA A+ exams challenge test takers to perform many configurations of a typical home router. But what does a router do for a SOHO network?
Understanding DNS
Video - 00:11:00
Individual hosts use IP addresses, but humans are terrible at memorizing long strings of numbers. To make our lives easier, most TCP/IP networks (and certainly the Internet) use the Domain Name System (DNS) to apply more human-friendly names to systems. DNS can also make use of various spam management protocols such as DKIM, SPF, and DMARC.
TCP, UDP and ICMP
Video - 00:06:00
TCP is the most popular IP protocol, but it isn’t the only one. User Datagram Protocol (UDP) and Internet Control Message Protocol (ICMP) both serve important purposes and features that techs need to understand.
Port numbers
Video - 00:12:00
An IP address directs a packet to the right computer, but it’s the port number that makes a connection between two applications on separate systems. It’s critical to understand how port numbers do their job and to memorize many special port numbers.
IPv6
Video - 00:07:00
The traditional IP addressing scheme (called IPv4) is quickly being replaced with the much more advanced IPv6 scheme. IPv6 adds several benefits over IPv4 and good techs know how to use it in our systems.
Dynamic IP addressing
Video - 00:10:00
Manually entering IP addresses into all our devices is an administrative nightmare. To avoid this mess, smart techs use the Dynamic Host Configuration Protocol (DHCP) to automatically provide IP addressing to individual hosts.
Network IDs and subnet masks
Video - 00:05:00
IP addressing was designed from the ground up for flexibility in supporting LANs and WANs of any size. The first step towards understanding this flexibility is to understand Network IDs and how they interact with a subnet mask to get packets delivered to the right system.
Introduction to TCP/IP
Video - 00:14:00
The Transmission Control Protocol/Internet Protocol (TCP/IP) is the cornerstone of Internet addressing and routing. It’s important to understand IP addressing schemes and to see how TCP and IP work together to make the Internet work.
Cables and connectors
Video - 00:11:00
Networking uses many different types of cables such as coaxial, twisted pair, and even fiber-optic. These different cables use special connectors and a good tech should recognize the different cables and their connectors.
WANs and routers
Video - 00:09:00
When a router connects two or more LANs, it creates a Wide Area Network. To understand WANs, it’s critical to understand routers and how they use logical addressing.
Hubs vs switches
Video - 00:04:00
The central box that connects devices on our LANs has gone through many advancements over the years. Whether hubs or switches, a good tech understands the function and features of these boxes in our LANs.
Introduction to networking
Video - 00:08:00
You’ll never understand the power of the Internet without first starting at the most basic form of networking: the Local Area Network (LAN). LANs use a central piece of hardware to interconnect individual devices, transferring data from one system to another in discrete frames.
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