LAN Flashcards
An address that identifies the network and host address assigned to a device.
Internet Protocol address
IP address
Internet Protocol address
The portion of the IP address that identifies the network the device is assigned to
Subnet address
A group of computers and associated devices that share a common communications line or wireless link, typically to a server
Local area network
LAN
Local area network
Computer users and resources within a geographic area the size of a metropolitan area that are connected
Metropolitan area network
MAN
Metropolitan area network
A network that connects several LANs. WANs are often limited to a corporation or an organization but are sometimes accessible to the public
Wide area network
WAN
Wide area network
A WAN that uses software to control connectivity
Software-defined wide area network
SD-WAN
Software-defined wide area network
Tunnel interface
multipoint Generic Routing Encapsulation
mGRE
multipoint Generic Routing Encapsulation
A collection of many networks owned by many entities that share information and communicate together
Internet
A local or restricted communications network, especially a private network created using World Wide Web software
Intranet
An intranet that can be partially accessed by authorized outside users, enabling businesses to exchange information over the internet securely
Extranet
The term used to describe how devices are connected and how messages flow from device to device
Topology
describes the way the network is wired
physical topology
describes the way messages are sent
logical topology
A device that is connected to absorb signals and prevent them from reflecting repeatedly back and forth on the cable
Terminator
used with bus topology
Terminators
host can provide network resources to other hosts or use resources located on other hosts
Peer-to-peer
host providing resources controls access to the resources
Peer-to-peer
Advantages of peer-to-peer networks include
Easy implementation
Inexpensive
Disadvantages of peer-to-peer networks
Difficult to expand (not scalable)
Difficult to support
Lack centralized control
No centralized storage
hosts have specific roles.
Client-server
some hosts are assigned server roles that allow them to provide network resources to other hosts
Client-server
Other hosts are assigned client roles that allow them to consume network resources
Client-server
Advantages of client-server networks
Easy to expand (scalable)
Easy to support
Centralized services
Easy to back up
Disadvantages of client-server networks
Expensive server operating systems
Extensive advanced planning required
small network used for communicating between personal devices
Personal area network
PAN
Personal Area network
typically created using Bluetooth wireless technologies
limited in range to only a few feet
PAN
network in a small geographic area ex. office
LAN
WLAN
-wireless local area network
-covers an area that is roughly the same size as a standard
-uses radio signals instead of wires to connect systems together
group of LANs that are geographically isolated and connected to form a large internetwork
Wide area network
network that covers an area as small as a few city blocks to as large as an entire metropolitan city
Metropolitan area network
typically owned and managed by a city as a public utility
Metropolitan area network
Be aware that many IT professionals do not differentiate between
wide area network and a MAN as they use the same network technologies
CAN
Campus area network
computer network made up of an interconnection of local area networks within a limited geographical area, such as a university
Campus area network
virtual WAN network that uses software to control connectivity, management and services between data centers and remote branches as well as the cloud
Software-defined wide area network
(SD-WAN)
allows any combination of transport services such as Long Term Evolution (LTE), Multiprotocol Label Switching (MPLS), and broadband internet services, to securely connect users to applications
Software-defined wide area network
(SD-WAN)
based on the same methodology as software-defined networking (SDN) which separates the control plane from the data plane to make networking more intelligent
SD-WAN
SDN
software-defined networking
LTE
Long Term Evolution
MPLS
Multiprotocol Label Switching
describes a computer system controlled by a single organization
Network: Management
portion of a network with a common network address.
Subnet
share the same network address, but they have unique host addresses
All devices on the subnet
larger network has a unique subnet address for
Each subnet
Devices connected through hubs or switches are on the same
Subnet
Routers are used to connect multiple subnets
Routers are used to connect multiple subnets
geographically dispersed WAN connections that connect multiple LANs
internetwork
Connecting two networks under different management is a form of
internetworking because data must travel between two networks
large world-wide public network
Internet
internet is public
virtually anyone can connect to it
ISP
internet service provider
Users and organizations connect to the internet through
internet service provider
internet uses a set of communication protocols (TCP/IP) for providing services
TPC/IP
website
Individuals and organizations can make services available to other users on the internet.
a private network that uses internet technologies
Intranet
Services available only to hosts that are connected to the private network
Intranet
your company might have a website that only employees can access
Intranet
private network that uses internet technologies, but its resources are made available only to external, trusted users
extranet
you might create a website on a private network that only users from a partner company can access
extranet
DMVPN
Dynamic Multipoint VPN
Dynamic Multipoint VPN
a Cisco software solution for building multiple VPNs in an easy, dynamic, and scalable manner
other VPN types are not sufficient
use a DMVPN when you need to add more sites
uses a hub-and-spoke configuration to establish a full mesh topology
DMVPN
simplifies the VPN tunnel configuration and provides a flexible option to connect to the central site
DMVPN
Each site uses Multipoint Generic Routing Encapsulation (mGRE). The mGRE tunnel interface allows a single GRE interface to dynamically support multiple IPsec tunnels
Dynamic Multipoint VPN (DMVPN)
Spoke sites can also obtain information about each other and alternatively build direct tunnels between themselves
spoke-to-spoke tunnels on Dynamic Multipoint VPN
group of computers that can share information through interconnections
network
network components
-Computers
-Transmission media
-Network interfaces
-Protocols
these are often called nodes or hosts in network
computer
a path for electrical signals between devices in network
Transmission media
- devices that send and receive electrical signals in network
Network interfaces
rules or standards that describe how hosts communicate and exchange data in network
Protocols
Despite the costs of implementation and maintenance, networks save organizations money by allowing them to:
-Consolidate (centralize) data storage.
-Share peripheral devices (such as printers).
-Increase internal and external communications.
-Increase productivity and collaboration.
Host role either
peer to peer
client-server
VPN
virtual private network
VoIP
Voice over IP
Server operating systems designed to
provide network resources
OSI
Open Systems Interconnection
theoretical way to classify and explain the complex process of sending data on a network.
Open Systems Interconnection
One very important thing that happens at the network layer is the assignment of IP addresses.
This is why the IP address is often referred to as a network layer address, or a layer three address.
Hypertext Transfer Protocol
(HTTP)
File Transfer Protocol
(FTP)
Trivial File Transfer Protocol
TFTP
Simple Network Management Protocol
(SNMP)
Logical Link Control
(LLC)
Media Access Control
(MAC)
(SMTP)
Simple Mail Transfer Protocol
(DNS)
Domain Name System
(TCP)
Transport Control Protocol
UDP)
User Datagram Protocol
(ARP)
Address Resolution Protocol
(ICMP)
Internet Control Message Protocol
(IGMP)
Internet Group Management Protocol
computers and devices in a network that communicate with each other
network nodes of hosts
how do you connect media to have devices communicate
twisted pair cabling
fiber optic cabling
wifi radio signals
network interface job consists of
converting digital data to type of signal that can be transmitted into network medium
standards in order to define how the data will be formatted
network protocols
hosts in a _______ network that both provide and consume network services
peer to peer
part of the network where all the computers share the same network ID
Subnet
subnet ID=network address
use subnet ID
two seperate networks that are connected together with wide area link between two organizations
Internetwork
ISPs
Internet service providers
manage a particular access point of the internet
Internet service providers ISPs
private network, uses many of same tech on internet
mini internet
intranet
essentially internet thats made partially available to entities outside of organization
extranet
TOPOLOGIES
MOD 2
