Network Basics: TCP/IP and OSI Network Model Comparisons
Internet Protocol (IP) version 4 (IPv4) is the current standard “IP” protocol used with TCP/IP — Transmission Control Protocol/Internet Protocol — which is the protocol for Internet addressing. Like the Open System Interconnection (OSI) model, TCP/IP has its own model.
The OSI model and the TCP/IP models were both created independently. The TCP/IP network model represents reality in the world, whereas the OSI mode represents an ideal. With that said, the TCP/IP network model matches the standard layered network model as it should.
The following figure shows the relationship between the OSI model and the TCP/IP model.
The TCP/IP network model has four basic layers:
Network interface (layer 1): Deals with all physical components of network connectivity between the network and the IP protocol
Internet (layer 2): Contains all functionality that manages the movement of data between two network devices over a routed network
Host-to-host (layer 3): Manages the flow of traffic between two hosts or devices, ensuring that data arrives at the application on the host for which it is targeted
Application (layer 4): Acts as final endpoints at either end of a communication session between two network hosts
Cloud Computing Glossary
cloud computing
A networking solution in which everything — from computing power to computing infrastructure, applications, business processes to personal collaboration — is delivered as a service wherever and whenever you need.
Cloud Computing Glossary
cloud service
The delivery of software, infrastructure, or storage that has been packaged so it can be automated and delivered to customers in a consistent and repeatable manner.
Cloud Computing Glossary
deprovision
The release of cloud services that are no longer needed.
Cloud Computing Glossary
federating
Linking distributed resources together over the cloud.
Cloud Computing Glossary
hypervisor
An operating system that acts as a traffic cop, managing the various virtualization tasks in the cloud to ensure that they make things happen in an orderly manner.
Cloud Computing Glossary
multi-tenancy
The sharing of underlying resources by multiple companies over a cloud.
Cloud Computing Glossary
network attached store
Storage that has its own network address through which it is accessed by the network's workstation users. Acronym: NAS
Cloud Computing Glossary
service level agreement
A contract that stipulates the type of service you need from providers and what type of penalties would result from an unexpected business interruption. Acronym: SLA
Cloud Computing Glossary
solution stack
An integrated set of software that provides everything a developer needs to build an application.
Cloud Computing Glossary
storage area network
A storage systems that is flexible and scalable because it's available to multiple hosts at the same time. Acronym: SAN
Cloud Computing Glossary
vertical industry groups
Workgroups comprised of members from a particular industry such as technology and retail.
Cloud Computing Glossary
virtual memory
The portion of your hard drive that Windows uses to expand the available RAM
Cloud Computing Glossary
virtualization
Using computer resources to imitate other computer resources or whole computers to maximize performance and flexibility.
