Common TCP and UDP Ports – CompTIA A+ 220-901 – 2.4
We use transport-layer protocols to communicate to specific services on a remote device. In this video, you’ll learn about some of the most popular TCP and UDP ports used on our servers.
CompTIA A+ 220-901
TCP/IP Addressing – CompTIA A+ 220-901 – 2.3
Our computers must be configured with the appropriate IP addressing to properly communicate across the network. In this video, you’ll learn about IP addressing, an overview of DNS, DHCP configurations, and the basics of classless subnetting.
An Overview of IPv4 and IPv6 – CompTIA A+ 220-901 – 2.3
IPv4 and IPv6 are the most popular network protocols in the world. In this video, you’ll learn about the structure of IPv4 and IPv6 addresses, the use of private IP addresses, and automatic addressing features in IPv4 and IPv6.
Calculating Signal Loss – CompTIA A+ 220-901 – 2.2
Your network signal will degrade over a long distances, when passing through patch panels, and at the connectors. In this video, you’ll learn how to calculate signal loss and recognize symptoms of signal loss on your network.
Network Cabling – CompTIA A+ 220-901 – 2.2
Your network is only as good as the cabling. In this video, you’ll learn about the characteristics of fiber communication, twisted pair copper cabling, cable categories, cabling in the plenum, and coaxial cables.
Network Connectors – CompTIA A+ 220-901 – 2.1
We use many different connectors in our modern networks. In this video, you’ll learn about fiber connectors, twisted pair connectors and standards, and common coax network connectors.
Maintaining Inkjet Printers – CompTIA A+ 220-901 – 1.15
Inkjet printers are relatively easy to maintain. In this video, you’ll learn about cleaning print heads, replacing inkjet cartridges, printer calibration, and how to properly clear jams.
Maintaining Thermal Printers – CompTIA A+ 220-901 – 1.15
Thermal printers have relatively few maintenance requirements. In this video, you’ll learn about thermal paper replacement, heating element cleaning, and debris removal.
Maintaining Impact Printers – CompTIA A+ 220-901 – 1.15
There are some periodic maintenance tasks that will keep your impact printer running at peak efficiency. In this video, you’ll learn about ribbon replacement, print head replacement, and tractor fed paper replacement.
Maintaining Laser Printers – CompTIA A+ 220-901 – 1.15
Laser printers are mechanical devices that require periodic maintenance. In this video, you’ll learn about toner cartridge replacement, maintenance kits, printer calibration, and printer cleaning.