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Nikkei Network

January 2006 Issue

SOUPED-UP FEATURE Nikkei Network Presents How to draw easy-to-understand network diagrams - It is surprisingly difficult to create a network diagram.  This article offers three tips drawn from the experience of experts who are very adept at drawing network diagrams.  These tips should help you develop widely applicable network diagrams.  You can be a master of network diagrams, too. Prologue: Why do you need to draw a network diagram? Its objective should be made clear Part 1 –Tips: Three tips for drawing easily understandable network diagrams Hint 1 – Make a separation between logical composition and physical composition Hint 2 – Make drastic cuts Hint 3 – Establish rules Part 2 – Tools: An examination of Visio, a standard tool for drawing network diagrams

BEGINNERS’ QUESTION

- Once an e-mail has been sent, isn’t it possible to retrieve it?

HIGHER-LEVEL FEATURE

A Thorough Understanding of NetBIOS
Learning about the mechanisms of browsing, name resolution, and file sharing

Introduction: NetBIOS is a vital technology for Windows Network, which uses TCP/IP to handle communications


Function 1 – Browsing: This manages a list of computer names, and a master browser plays a central role in the task

Function 2 – Name Resolution: This determines the IP addresses of other devices, and the Broadcast method is used in most cases

Function 3 – File Sharing: This function changes its behavior at the time of access depending on the type of operating system or the registration information

Summary: A review of the exchange of NetBIOS messages in accordance with the procedure

Experiment: What would happen if two master browsers were used at the same time?

SPECIAL NEW YEAR’S FEATURE

Hot Network Technologies in 2006

10GBASE-T: A speed of 10 giga bps is realized over copper lines thanks to innovative efforts taken to improve modulating and encoding techniques as well as cables

Wireless USB: Wireless USB 2.0 uses UWB technology for transmission

H.264: The new moving-image-encoding format offers a better compression rate and can be applied to a wide range of products, from cell phones to HDTV

Ajax: The program that can operate autonomously makes Web applications easier to use

High-speed Power Line Communication: High-speed communication at a transmission speed of 100 mega bps can be realized using power lines

IEEE802.11e: QoS technology for wireless LAN systems

“Holey fiber”: Optical fiber that is strongly resistant to bending

Phone number portability: Cell phone users will be able to switch cell phone companies without having to give up their current phone number