Network Devices and Their Functions

Flashcards covering key networking devices, their roles, and functions to aid exam preparation.

Router

A device that forwards data packets between computer networks, making decisions based on the destination IP address.

Switch

A networking device that connects devices within a network and forwards traffic based on MAC addresses.

Access Point

A device that allows wireless devices to connect to a wired network, acting as a bridge with no IP address translation.

Unmanaged Switch

A switch that operates as a plug-and-play device without configuration options, typically providing all interfaces in one large VLAN.

Managed Switch

A larger switch that allows for remote management, configuring VLANs, prioritizing traffic, and offering redundancy.

Power over Ethernet (PoE)

A technology that allows network cables to carry electrical power along with data.

DOCSIS

Data Over Cable Service Interface Specification, a standard for transmitting data over cable television networks.

DSL (Digital Subscriber Line)

A high-speed internet connection that operates over traditional telephone lines, providing reasonably good throughput.

Optical Network Terminal (ONT)

A device that converts fiber optic signals into Ethernet connections for home or office networking.

Network Interface Card (NIC)

A hardware component that allows devices to connect to a network, each with a unique Media Access Control address (MAC).

Layer 3 Switch

A switching device that also provides routing capabilities, typically operating at OSI layer 3.

VLAN (Virtual Local Area Network)

A subgroup within a local area network that is created to improve performance and security by segregating network traffic.

Firewall

A security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules.

Next-Generation Firewall

An advanced firewall that goes beyond traditional firewalls by inspecting application-layer traffic.

Port Mirroring

A method allowing network traffic to be monitored by duplicating that traffic and sending it to another interface.

RJ45 Connector

A standardized networking connector used for Ethernet connections.

Patch Panel

A panel used to manage and organize cable connections, allowing for easy reconfiguration and troubleshooting.