A virtual private network (VPN) is the extension of a private network that encompasses links across shared or public networks like the Internet. A VPN enables you to send data between two computers across a shared or public internetwork in a manner that emulates the properties of a point-to-point private link. The act of configuring and creating a virtual private network is known as virtual private networking.
SOA Patterns provides architectural guidance through patterns and antipatterns. It shows you how to build real SOA services that feature flexibility, availability, and scalability. Through an extensive set of patterns, this book identifies the major SOA pressure points and provides reusable techniques to address them. Each pattern pairs the classic problem/solution format with a unique technology map, showing where specific solutions fit into the general pattern.
The Internet Protocol (IP) is a routed protocol that is used to transmit data in
packets. It uses the best-effort delivery for individual packets without any flow
control. Transmission Control Protocol (TCP) is used with IP to provide a
Asynchronous Transfer Mode (ATM), on the other hand, provides connections
between endpoints in the ATM network. The connections are called virtual circuits
IP’s default best effort service can be supplemented by differentiated quality of
service based on IP precedence or DSCP marking.
Most haptic devices are intended primarily, if not exclusively, to exchange information with
a human operator, and often replace or augment traditional computer displays with
backdrivable, force-producing tactile interfaces. This includes popular commercial devices
such as the PHANTOM (Massie & Salisbury, 1994) that are typically limited to at most
several Newtons of endpoint force capacity, just enough to display simple virtual
environments to the operator.