8/27 Class Flashcards
network
a group of connected computing devices
logical diagram
identifies the high-level design (LANs, WANs)
physical diagram
identifies the individual components (cables, network devices, systems)
networking home computers
wired devices diagrams
wireless routers
router internet router wireless access router typically a multifunction device wireless access point (WAP) IP Router with Network address translation(NAT) dynamic host configuration protocol(DHCP) domain name server firewall ethernet switch vpn termination
SOHO
small office and home office
local area network
group of connected devices usually in the same geographic location and network subnet
varying speeds
B for bytes and b for bits
wired: 100 mbps, 1000 mbps, 1 Gbps
wireless: 11 Mbps, 54 Mbps, 300 Mbps, 1 Gbps
Workgroup
Decentralized authentication (each system contains their own usernames, passwords and configuration information
domain
provides centralized authentication and configuration management
domain controller runs active directory
also often runs the local DNS and DHCP servers
external ip address
the public address that anyone can see
internal ip address
the private address that can only be seen on your private network
workgroups
appropriate for up to ~20 users
domains provide
one password to remember
single sign on(SSO) to multiple applications
simplified (and more secure) management of user and system configurations
built in redundancy and fault tolerance
switches
computers are connected with switches
subnets
connected with routers
enterprise
big company
typically has thousands of users
many have dozens of administrators
typically have WANs to connect geographic locations
WAN
connecting two LANS is very slow
remote access via VPN
helps you access your network from anywhere
standards
particular ways to build tech
called RFC’s (request for comments)
key standards organizations
internet engineering task force (TCP/IP, HTTP, etc)
world wide web consortium
institute of electrical and electronics engineers
international telecommunication union (telcom)
