Chapter 21: Networks (Protocols) Flashcards
Part 2
Network Speed Measurement
Measured in bits per second (bps).
Bandwidth
The amount of data that can be carried in a given time, measured in bps.
Latency
They delay encountered by data travelling through a network.
Protocol Functions
Includes addressing, routing, error checking, data formatting, sequencing, and synchronization.
SMTP
Simple Mail Transfer Protocol, used for sending email over the Internet.
POP3
Post Office Protocol v3, retrieves emails from the server and deletes them after download.
IMAP
Internet Message Access Protocol, keeps emails on the server for access from multiple devices.
Ethernet
A family of wired LAN protocols defining physical and logical parts of the network.
Wi-Fi
A digital communication protocol for wireless LANs.
TCP
Transmission Control Protocol ensures reliable, ordered, and error-checked delivery of data.
TCP/IP
A protocol stack consisting of multiple protocols, including TCP and IP.
TCP/IP Layers
Application, Transport, Internet, and Link.
Packet Switching
Data is broken into packets with headers containing sender/receiver info and sequence number.
HTTP
HyperText Transfer Protocol used for web communication.
HTTPS
Secure version of HTTP with encrypted data transmission.
FTP
File Transfer Protocol for transferring files over TCP/IP networks.
Web Server
Powerful computer system that stores web pages & any multimedia that the pages might contain.
Internet Protocol (IP)
Handles addressing and routing of data packets over the Internet.
Application Layer Protocols
FTP, HTTP, HTTPS, SMTP, POP, IMAP.
Cellular Networks
Divided into cells with base stations handling wireless communication.
2G
First digital communication, introduced SMS and MMS.
3G
Enabled wireless Internet access, video calls, and streaming.
4G
Higher speeds, lower latency, and better gaming experience.
5G
100 Gbps speeds, lower latency, supports emerging technologies like driverless cars.
