...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...

...transfers, remote file servers and database and network management. • Presentation Layer • The Presentation Layer translates and converts transmitted encoded data into formats that can be understood and manipulated by users. • Session Layer • The S...

...fibre switches and servers, fibre modems, and similar hardware require duplex cable. Duplex is available in single- and multimode. • Simplex—Because simplex fibre optic cable consists of only one fibre link, you should use it for applications t...