Comptia Networking Notes.docx

Data Encapsulation

Process of adding headers and trailers to data to prepare it for transmission over a network.

Physical Layer

OSI model layer responsible for transmitting data using different media types like cable, wireless, and optical.

Modulation

Process of encoding data into signals for transmission.

Switch

Network device that keeps track of local addresses and ensures data is sent and received correctly.

Datagram

Independent unit of data transmitted over a network.

Internet Service Provider (ISP)

Company providing internet access, maintaining network infrastructure, and routing internet traffic.

Hexadecimal

Base-16 numeral system used in computing to represent numbers.

LAN

Local Area Network under user control using IP for communication.

WAN

Wide Area Network not under user control.

Star Topology

Network layout where all devices are connected to a central hub.

VLAN

Virtual Local Area Network for transferring networks seamlessly.

Twisted Connectors

Network connectors with pros like simple installation and cons like limited options.

Patch Panel

Device with jacks for connecting and routing circuits conveniently.

Configuration Modes

Different modes like user config and privileged exec for configuring network devices.

MAC Address Security

Methods like sticky MAC addresses to protect and control network access.