Java a beginner’s guide, sixth edition

... an application header and application data (the actual data being sent) Next, at the presentation layer, a presentation header is wrapped around the data, and it is passed to the component at ... layer (layer 3) can transmit its data The data-link layer typically includes error detection and correction to ensure a reliable data stream The data elements carried by the data-link layer are ....

Ngày tải lên: 27/06/2014, 00:20

... 0-07-163355-3 All trademarks are trademarks of their respective owners Rather than put a trademark symbol after every occurrence of a trademarked name, we use names in an editorial fashion only, and to ... such damages This limitation of liability shall apply to any claim or cause whatsoever whether such claim or cause arises in contract, tort or otherwise For my daughters, Vivian and Ma...

Ngày tải lên: 05/07/2014, 04:20

... Network Cabling Overview of Basic Cable Types Twisted-Pair Cabling: The King of Network Cables Coaxial Cable Installing and Maintaining Network Cabling Choosing a Cabling ... Routers, and Switches Cabling and Cable Plants Workstation Hardware Chapter Summary 17 18 18 19 Understanding Network Cabling Understanding Cable ... Layer Application Layer Understanding How Data Travels Through the...

Ngày tải lên: 05/07/2014, 04:20

... Server Under Fedora Downloading and Installing Apache Web Server Administering Apache Web Server Stopping and Starting Apache Changing the Apache Configuration ... Virtual Machine Installing VMware Tools Backing Up Virtual Machine Data Chapter Summary 367 369 369 370 384 386 388 388 Appendix Understanding the Sarbanes-Oxley Act Sarbanes-Oxley ... Contents Using VMware Virtualization Products...

Ngày tải lên: 05/07/2014, 04:20

... several areas of particular specialization, such as e-mail servers like Lotus Notes or Microsoft Exchange, or database servers like Oracle or SQL Server Internet administrator Many people these days ... bits and bytes work The notion of binary, octal, decimal, and hexadecimal notation How basic PC hardware works, and how to install and replace PC peripheral components Two or three desktop ope...

Ngày tải lên: 05/07/2014, 04:20

... a smaller company that has only one network administrator, duties include the following: Creating, maintaining, and removing user accounts Ensuring that necessary backups are made on a regular ... asking these questions, and others that may occur to you, is to get a good understanding of each functional area: what it does and how it does it, as well as what it wants to be able to in the...

Ngày tải lên: 05/07/2014, 04:20

... of database administrator Organizations employ e-mail administrators, webmasters, web designers, network support technicians, and so on In fact, a dizzying number of different jobs are available ... interests, you can then analyze what additional skills, classes, or certifications you may need to enter one of those jobs Many opportunities are available The important thing is to get started...

Ngày tải lên: 05/07/2014, 04:20

... understand about any network connection is how much data it can carry Broadly, this capacity is called bandwidth, which is measured by the amount of data that a connection can carry in a given ... equals 14, and F equals 15 You can determine the decimal value for a hexadecimal value manually using the same method as shown earlier in this chapter for decimal and binary numbers The hexade...

Ngày tải lên: 05/07/2014, 04:20

... using gateway software that is part of the file-based e-mail system 25 26 Networking: A Beginner’s Guide In a client/server e-mail system, an e-mail server contains the messages and handles all ... required from a file-based e-mail system and the outside (say, to the Internet) are usually accomplished with a stand-alone computer—called a gateway server—that handles the e-mail...

Ngày tải lên: 05/07/2014, 04:20

... physical layer Data-Link Layer The data-link layer, layer 2, defines standards that assign meaning to the bits carried by the physical layer It establishes a reliable protocol through the physical ... physical layer so the network layer (layer 3) can transmit its data The data-link layer typically includes error detection and correction to ensure a reliable data stream The data elements c...

Ngày tải lên: 05/07/2014, 04:20

... plates, patch panels, and so forth It’s extremely important that a new installation of a cable plant be performed by a qualified contractor trained to install that type of cable Cable may appear simple, ... You will also occasionally see a lower-grade cable used called Category (Cat-3) cable This is similar to Cat-5 cable, but has half as many wires running through it and Chapter 3: U...

Ngày tải lên: 05/07/2014, 04:20