Lesson 4 : Network Devices Flashcards
A hardware component that connects your computer to a local data
network or the Internet.
Network Interface Card (NIC)
Wi-Fi wireless networks
Wired Ethernet connections
NIC Types
Hardware device, works at data link layer.
Its job is to regenerate the signal over the same network before
the signal becomes too weak or corrupted.
Repeater
Hardware device, works at data link layer.
It provides interconnection with other bridge networks that use the
same protocol.
Connecting two different networks together and providing
communication between them.
Bridge
A common connection point for devices in a network – connects multiple computers or other network devices together.
Connect segments of a LAN.
Work as repeaters.
Hub
Types of Hub
Active Hub
Passive Hub
Intelligent Hub
Hubs which have their own power supply and can clean, boost, and relay the signal along with the network. It serves both as a
repeater as well as wiring centre.
Active Hub
Hubs which collect wiring from nodes and power supply from active hub. These hubs relay signals onto the network without
cleaning and boosting them
Passive Hub
It work like active hubs and include remote management capabilities. They also provide flexible data rates to network devices.
Intelligent Hub
A high-speed device that receives incoming data packets and redirects them to their destination on a local area network (LAN).
A LAN switch operates at the data link layer or the network layer of the OSI Model.
Switch
Network Layer device
A device like a switch that routes data packets based on their IP addresses.
Normally connect LANs and WANs together or a LAN and its ISP’s network –for example, your PC and your service provider.
Routers
Short for Modulator / Demodulator.
It is a hardware component that allows a computer or other device, such as a router or switch, to connect to the Internet.
It converts or modulates an analog signal from a telephone or cable wire to a digital signal that a computer can recognize.
Modem
A passage to connect two networks together that may work upon different networking models.
They basically works as the messenger agents that take data from one system, interpret it, and transfer it to another system.
Also called protocol converters
Gateway
