Networking Concepts Flashcards
RG59 / RG6
Types of coaxial cable used for television
PAN
Network connecting peripherals such as mice, printers, and smart phones to a single host using Bluetooth technology
Duplex Multimode LC Connector
Fiber optic connector that accepts both the sending and receiving fibers
WAN
Network that is owned by an ISP or corporations covering a wide geographic area
Firewall
software or hardware that permits or denies traffic in order to protect data and equipment from unauthorized access
WEP / WPA2
Types of encryption used on wireless networks
DHCP
Protocol that dynamically assigns IP addresses to hosts
IPv6
128-bit address assigned to hosts and represented in hexadecimal format
CAT5e / CAT6 / CAT7
Category ratings for twisted-pair cables that specify number of wires and twists and affects distance limitations
TCP/UDP Port Number
Predefined numbers that identify commonly used protocols such as FTP, SSH, HTTP, and DNS
OSI TCP/IP
Layered reference models that prepare data for transmission
MAN
A network that spans a large campus or city and interconnects buildings through wireless or fiber optic backbones
Router
A device that connects networks and forwards traffic from hosts to remote networks through the use of IP addresses
Repeaters
Devices that regenerate a weak signal to extend the distance that data can travel
RJ45
Connector for twisted-pair cables
Thicknet/Thinnet
Types of coaxial cable used for networks. Thicknet referred as 10base5 systems, where 10 means 10mbps speed. Base means baseband and 5 denotes 500 meter max, RG-8/U is used as thik cable. Thinnet also referred as 10base2 where 2 denotes 200 m max distance between two nodes or repeaters RG-58/U is used as thin cable
PoE
DC current is transferred over Ethernet cable, along with data, to power PoE devices
Plenum
Cables with shielding made from a special plastic that retards fire
CSMA/CD
Architecture designed to handle collisions by controlling how devices communicate on an Ehternet network
T568A / T568B
Wiring standards for twisted-pair cabling
LAN
Network covering a small geographic area typically owned by an individual
Subnet Mask
32-bit value used with an IPv4 address to indicate network and host components
Hub / Bridge /Switch
Intermediary devices used in a LAN to connect hosts and forward data to other devices
EMI / RFI
Types of interference that affect the quality of data transmission. EMI (Electromagnetic Interference) also called RFI (Radio Frequency Interference). EMI is actually any frequency of electrical noise, whereas RFI is a disturbance that affects an electrical circuit due to either electromagnetic conduction or electromagnetic radiation emitted from an external source
Single-mode / Multi-mode
Classification of fiber cables that signify light source, distance limitations and speed
Duplex
Characteristic of media that allows data to flow in both directions at the same time or one direction at a time
IPv4
32-bit address assigned to a host and usually represented in dotted decimal format
UTP / STP
Unshielded Twisted Pair and Shielded Twisted Pair are cables that are commonly used for cabling local networks.
MAC
48-bit address hard coded onto the NIC and usually represented in hexadecimal format
Wireless Access Point
A device that connects wireless hosts to the network via the use of radio waves
