Posts Tagged ‘Systems’
IBS, Innovative Business Systems, Inc.
Introduction to IBS, Inc.
Employee-owned and based in Easthampton Massachusetts, IBS is a computer services company supporting small to medium businesses, community banks, and credit unions that require technical expertise, project planning, and implementation services from a business partner they can count on today and in the future. Areas of expertise include Exchange 2007, data replication solutions, Disaster Recovery and Business Continuity infrastructure design and implementation, server virtualization and consolidation, desktop virtualization, application delivery, and remote access solutions.
Duration : 0:2:28
The seven layer OSI reference model tutorial for novice CISA and CISSP candidates
The seven layer OSI reference model tutorial for novice CISA and CISSP candidates.
http://en.wikipedia.org/wiki/OSI_model
The Open System Interconnection Reference Model (OSI Reference Model or OSI Model) is an abstract description for layered communications and computer network protocol design. It was developed as part of the Open Systems Interconnection (OSI) initiative.[1] In its most basic form, it divides network architecture into seven layers which, from top to bottom, are the Application, Presentation, Session, Transport, Network, Data-Link, and Physical Layers. It is therefore often referred to as the OSI Seven Layer Model.
A layer is a collection of conceptually similar functions that provide services to the layer above it and receives service from the layer below it. On each layer an instance provides services to the instances at the layer above and requests service from the layer below. For example, a layer that provides error-free communications across a network provides the path needed by applications above it, while it calls the next lower layer to send and receive packets that make up the contents of the path. Conceptually two instances at one layer are connected by a horizontal protocol connection on that layer.
Duration : 0:4:15
Risk Assessment of Business Backup Systems
http://www.creydall.com
Discover the inherent problems of most backup systems, Adam Randall CEO of an IT support company in Adelaide, South Australia, gives a frank risk assessment of many business backups and the importance of testing your disaster recovery plan.
Duration : 0:8:8