Ch4.Network Management and Mobil-ity

Lecture 3

Networked Devices

• Networked devices are devices that communicate with a network.

• Technologies include laptops, PDAs, cell and smartphones, wikis, intranets, and extranets, GPSs, POS terminals, and RFID which allow infor-mation to be rapidly collected, processed, shared, and acted upon for competitive survival and ad-vantage taking.

• Feature-rich wireless devices make collaboration easier and more productive which indicates a more integrated, always-connected business en-vironment and lifestyle.

Apple – Famous for its Creative Connectivity – iPhone……

4G, LTE -> More comming

Information on Internet Bulletin Boards, Newsgroups, and Social

Networking Sites

Social Networks Go to Work

Click to PCWorld Busi-ness Center article for more….

Social Networking Shrinks the World

• Social networking via mobile phones is shrinking the world to the size of a small screen.

• Micro-blogging is the sending of messages up to 140 characters.

• With more than 3 billion mobile handsets in use in the world (1 for every 2 people on the planet) a powerful force for changes in business and collab-oration as well as politics and societies have emerged.

• News media, universities, public safety, and other organizations are using the technology to deliver information to a wide audience quickly.

4.1 Business Networks

Business networks support 4 basic functions:

1. mobility

2. collaboration

3. relationships

4. Search

Network basics

Figure 4.2 A signal is transmitted from a sender/source to a receiver/destination via circuit or packet switching.

Network Terminology• Bandwidth: Throughput capacity or speed of a

network.

• Protocol: Standards that govern how networked devices exchange information.

• TCP/IP: Transmission control protocol/Internet Pro-tocol) are a suite of Internet protocols.

• Broadband: Short for broad bandwidth.

– Fixed-line broadband: Cable or DSL Internet connec-tions.

– Mobile broadband: Wireless high-speed Internet access through a portable modem, phone, or other device.

4.2 Wireless Broadband Networks

• Enterprises are moving away from unsystem-atic adoption of mobile devices and infra-structure to a strategic build-out of mobile ca-pabilities.

• Mobile infrastructure consists of technology, software, support, security measures, and devices to manage and deliver wireless communications.

4.3 Networks Management and Portals

• When the network goes down or access is blocked, so does the ability to operate or func-tion.

• Damages when a company cannot operate or fulfill orders include:– lost sales and productivity– Inability to send and receive payments– inability to process payroll and inventory

TCP/IP Networks

• The Internet protocol suite consists of the IP (In-ternet Protocol) and TCP (Transport Control Proto-col), or TCP/IP.

• In preparation for transmission, data are digitized into packets and sent via packet-switched net-works, local area networks (LAN), or wide area networks (WAN).

Discovery

Discovery allows users to browse and search data sources, in all topic ar-eas, on the Web.– Search engines–Metasearch engines– Discovery of material in foreign lan-

guages

Four Largest Search Engines

Google

Yahoo

Microsoft Network

Ask

Metasearch Engines

Surf-Wax

Metacrawler

Mamma

Publication of Material in For-eign Languages

Translation products include:

– Altavista

– Google

– Trados

Network Computing Infrastructures

• Intranets: a network serving the internal informational needs of a company.

• Extranets: private, company-owned network that uses IP technology to securely share part of a busi-ness’s information or operations with suppliers, vendors, partners, customers, or other businesses.

• Extranets can use virtual private networks (VPNs). VPNs are created using specialized software and hardware to encrypt/send/decrypt transmissions over the Internet.

Figure 4.7 Virtual Private Network (VPN)

4.4 Collaboration

Messaging and collaboration tools in-clude:

• older communications media such as e-mail, videoconferencing, fax, and IM

• newer media such as blogs, pod-casts, RSS, wikis, VoIP, Web meet-ings, and torrents (for sharing very large files)

Collaboration….contd.

• Virtual collaboration• Workflow technologies• Groupware• Teleconferencing• Videoconference• Web conferencing• Real-time collaboration tools

Workflow and Groupware Tech-nologies

Telepresence Systems

Leading Telepresence Systems

Cisco Telepresence 3000

Collaboration Support Technologies

• Portals, intranets, extranets, and shared workspaces are examples.

• Web 2.0 or Enterprise 2.0 technologies such as wikis, blogs and microblogs, provide more options to promote and support enterprise collaboration.

Minicase :Wikis, Blogs, and Chats Support Collaboration

at DrKW

Wikis used in business continue to grow.

Wild About WikisBy Rachael King

• Intel, Motorola, Sony—they're among the companies using Web-collaboration tools to pro-mote products and foster team-work among employees

Wikis are Web-based tools that make it easy for users to add, remove, and change online content. Employees at companies such as Intel, Motorola, IBM, and Sony use them for a host of tasks, from setting internal meeting agendas to posting documents related to new products.

Many companies rely on wikis to engage customers in ongoing discussions about products. Wikis for Motorola and T-Mobile handsets serve as continually updated user guides. TV networks including ABC and CBS are creating fan wikis that let viewers interact with each other as they unravel mysteries from such shows as Lost and CSI: Crime Scene Investigation. Read about these and other ways companies are warming to wikis. A link is included where the wiki is open to the public.