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An operating system. The grandfather of the Big Three. An open-source, Unix-like OS. Anyone is free to use it and create their own versions with edits to it. Since the Linux OS is open-source, there are a lot of different versions (known as Linux distributions...

aliases: SCSI A type of port used to connect internal hard drives to the computer system. It's connecters use 50, 68, or 80 pin variations. Features: Limited BIOS support controller coordinates between all other device son the host bus adapter controller ...

The better version of Cat-5, since it provides better EMI protection. Description RJ45-Connector 1000 Mbps 100 MHz Gigabit Ethernet support Max insertion loss 24 dB #III

An enumeration every single cable type listed in the A+ course. Network Cables Copper Cabling Cat-5 Cat-5-Enhanced Cat-6 Cat-6-Augmented Cat-7 Cat-8 Coaxial-Cables RG-6-Coaxial-Cable RG-59-Coaxial-Cable Twisted-Pair-Cable Shielded Unshielded Plenum C...

A deprecated type of connector used to connect devices to twisted pair cables. RJ11 Connectors: have 4-6 connectors conforms to the RJ11 wiring standard which supports up to two pairs of wires (one for phone, one for power) uses a locking tab to keep a connec...

A type of network cable that twists the wires in order to achieve better performance. There are two types of twisted pair cables: shielded and unshielded. Shielded cables protects against interference, but requires the cable to be grounded. Shielded cabling is...

A table stored in network switches that stores information about the MAC addresses of the hosts in the network. It's where the switch knows where to forward incoming packets from outside the network. Content Addressable Memory isn't an array or map or set, its...

A unshielded twisted pair cable category that supports up to 10 Gbps. Description RJ45-Connector 250 MHz Limits 10 Gbps speeds to max cable lengths of 55 meters. #III

A type of fiber optic cable that transfers data only using a single light ray, used for high transfer speeds over long cable distances. Since the internal core in SMF cables are very small (~10 microns in diameter), there is little room for the light ray to bo...

A type of coaxial cable that is used for video transmission in CCTV systems, formerly used to transmit satellite and cable TV broadcasts. They aren't used anymore because they lose signal quality over long distances. They have a resistance rating of 75 ohms. R...

The predecessor to the network switch. A network hub only works at the Physical layer. It forwards all incoming traffic to all nodes connected to it's network segment using the broadcast address ff:ff:ff:ff:ff:ff. All the nodes are configured to ignore receive...

A coaxial cable specification used for cable TV, satellite TV, and broadband cable internet. They have a resistance rating of 75 ohms. #III

A special layer used in fiber optic cabling used to prevent stray light waves from exiting the cable, but instead guiding the waves back into the central core. #III

A patch panel provides an easy way to connect devices and accommodate different types of cabling, such as twisted-pair and fiber optic cables. It typically terminates wires that run from different Ethernet office wall plates. Once terminated, you can use patch...

A type of connector used to connect computer systems using fiber optic cabling. An SC connector: Is used with single-mode and multi-mode cabling. Is a push on, pull off connector type that uses a locking tab to maintain connection. Has a separate connector fo...

An EMI resistant, sturdy cable type used to transmit radio signals, digital audio, TV cabling, phone lines, and more. It's made up of an inner cable conductor, a cable insulator, a braided mesh conductor, and a plastic jacket/sheath. Twinaxial Cables A type of...

An ethernet switch lets you connect multiple devices to the same network segment, but does NOT connect the network segments. Cisco Switches have numbered ports that are connected using Ethernet or RJ45 cables. Specialized ports for Gigabit Ethernet and SFP are...

A type of network cable that uses light to transmit data in a glass or plastic cable. Wavelength Division Multiplexing (WDM) Duplex fiber channel links require two fiber optic cable connections, one for a Transmit (Tx) and for a Receive (Rx) lane. These parall...