may 25th

Lithium-lon (Li-ion) and Lithium-Ion polymer

batteries that have no memory effect and does not deteriorate the battery over time.

Labtop ram

Small Outline Dual In-line Memory Module (SO-DIMM)

Magnetic disk

Hard drive

To transfer data from one drive to another

special software that Image/clone

802.11

Internet access and Bluetooth for laptops

USB-C

24 pin double sided connector

Lighting connector

 8 pin digital signals

NFC- near field communication

send small amounts of data wirelessly over a limited area

Bluetooth

High speed communication over short distance also called PAN (personal area network)

Wired headsets

TRRS ( tip-ring-ring-sleeve)

Docking station

hooks up to a dock so you can use a monitor and external keyboard

Port replicators

does the same thing a docking station does just connects thru usb

Cell network cells

coverage areas for your phone to communicate

LTE

Long Term evolution

4G

150 Mbits

LTE Advanced (LTE-A)

300 Mbits

5G

10gbs

SIM-subscriber Identity Module

Sim id, phone number, cellular network info, storage space for contacts and messages ect

Esim

Embedded sim

GPS

Global Positioning System uses satellites to determine where you are or wifi networks around you

IP

Internet protocol

TCP-Transmission Control Protocol

sends the data and the server sends it back to the client to make sure it's the correct information and it manages how much info can be sent

UDP User Datagram Protocol

The client just sends data to the server and the server doesn't send it back and it can't control how much data is being sent

DHCP (dynamic Host Configuration Protocol)

what we use to automatically set ip address

TFTP (Trivial File Transfer Protocol)

Udp port 69 it is a lightweight, simplified file transfer protocol generally used on local area networks (LANs) to transfer firmware updates, configuration files, and boot images to hardware

HTTPS (hypertext Transfer Protocol Secure)

Port 443 for web server communication securely

HTTP

Port 80 web server communication

SSH (secure shell)

TCP port 22 used to connect to remote devices

What are tcp and udp

send information across the network to port numbers

IPv4 sockets

Server IP address,protocol and server application port number Client IP address, protocol and client port number 

Non-ephemeral ports

usually on a server or service ports 0-1,023

Ephemeral ports

a temporary network communication endpoint automatically assigned by your operating system for outgoing connections uses port 1,032 through 65,535

TCP and UDP any port number between what

0 through 65,535

Firewall is Port based security

it allows what comes through and out based on the port number

FTP file transfer protocol

uses two default TCP ports: Port 21 for the control connection (sending commands and credentials) and Port 20 for the actual data transfer (uploading and downloading files).

Telnet telecommunication Network

 port tcp/23 unlike SSH it's not encrypted another way to remote connect to a device

SMTP- Simple Mail Transfer Protocol

Port tcp/25 use to send emails

DNS- domain Name system

Converts names to ip addresses port udp/53 websites are just ip address

DHCP- Dynamic Host Configuration Protocol

configures your ip, subnet mask and other connections port udp/67 and udp 68 requires a DHCP server which is usually already in routers 

There is ip addresses in a pool and anytime a device connects it leases the ip to that device and the device can either renew the lease or give it back in the pool. Network admins can also set a ip address to a certain device

SMB- Server Message Block protocol

used by windows a client-server communication protocol used for sharing files, printers, serial ports, and inter-process communication across a network.

LDAP lightweight Directory Access Protocol

port tcp/389 store and retrieve information in a network directory.

RDP-remote desktop protocol

share a desktop remotely like anydesk port tcp/3389