...After the power cycles on and off, normal communications resume. Often, there aren’t any technically trained personnel at the site who can perform maintenance and resets on equipment. Even if it is a manned station, there is a risk that the wro...

...layers that contain modules for performing defined functions. • This translates into a set of rules that defines the way participating network nodes must interact to communicate and exchange information. The OSI model defines standard relationships ...

...PCs. V.22 bis doubles data throughput (to 2400 bps) for quick service of large file transfers. • V.25, V.25 bis • -Provides for automatic calling and answering circuitry for use on dialup lines. V.25 defines a dialup parallel interface; V.25 b...

...in contrast, are far less restricted in bandwidth, but they must deliver a picture suitable for viewing from very short distances. • We’ll explain many of today’s different video formats that fall into these two categories. • Broadcast/television...

...identity of users and servers should be verified and the firewall should keep a record of message sources and arrival times. • Is the equipment compatible? • Each company’s network is unique. Yours may include various pieces of hardware and softwa...

...layers that contain modules for performing defined functions. This translates into a set of rules that defines the way participating network nodes must interact to communicate and exchange information. The OSI Model defines standard relationships be...

Wireless Network • In ad-hoc mode, wireless user devices such as laptop computers and PDAs communicate directly with each other in a peer-to-peer manner without the benefit of access points. • Ad-hoc mode is generally used to form very small s...