Telecommunication Competitors and Wireless Networks

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What is a major competitor of telephone company Internet providers?

Cable networks

Which company is developing a Wi-Max capability that could potentially serve an entire metropolitan area?

Optimum Cable (Comcast)

What is the primary function of a server in a client/server computing model?

Sets rules of communication for network and provides every client with an address

What is the main advantage of packet switching over circuit-switched networks?

More efficient use of network’s communications capacity

What is the primary limitation of circuit-switched networks?

Expensive and wasted available communications capacity

What is the primary function of packet switching in a network?

Slicing digital messages into packets

What is the method of transporting voice messages over the Internet?

Packet-switching

What is the primary function of gateways in a firm?

To connect to the Internet

What is the primary function of Network Access Points (NAPs) and Metropolitan Area Exchanges (MAEs)?

to facilitate the intersection of backbone networks with regional and local networks

What is the purpose of encoding data in a VPN?

To protect data transmitted over the public Internet

What is the primary purpose of a gateway in a VoIP system?

to arrange data packets in the proper order and direct them to the receiving computer

What is the purpose of an Internet server computer?

to provide an array of services to client computers

What is the purpose of adding a wrapper around a network message in a VPN?

To hide the content of the network message

What is the purpose of the Hypertext Transfer Protocol (HTTP)?

To transfer Web pages

What happens to a voice message in a VoIP system?

it is digitized and broken up into data packets

What is the purpose of Uniform Resource Locators (URLs)?

To address Web pages

What is the function of FTP in client-server computing?

to facilitate file transfer between computers

What is the primary advantage of using VoIP?

it allows voice messages to travel along different routes

What is the primary function of Exostar's tools?

Facilitating sourcing, e-procurement, and collaboration for direct and indirect goods

What drove prices down in independently owned third-party Net marketplaces?

Competitive bidding

What type of e-commerce is growing the fastest, although it represents only a small part of all e-commerce?

Mobile e-commerce (m-commerce)

What changed the landscape of mobile commerce in the US after 2009?

The widespread adoption of smartphones and cell phones

What is a characteristic of independently owned third-party Net marketplaces?

They connect thousands of suppliers and buyers for spot purchasing in vertical markets

What is m-commerce particularly well-suited for?

Location-based applications and services

What is the first step in managing project risk?

Identifying the nature and level of risk

What is the purpose of internal integration tools?

To manage technical complexity

What does the resource summary provide in a Gantt Chart?

Total person-days for each month and for each person

What is the purpose of frequent team meetings in project management?

To facilitate communication and collaboration among team members

What do the orange lines in a Gantt Chart represent?

The beginning, duration, and end of each task

What type of project is described in the Gantt Chart?

Data administration project

Study Notes

Voice over Internet Protocol (VoIP)

  • VoIP digitizes and breaks up voice messages into data packets that may travel along different routes before being reassembled at the final destination.
  • A processor nearest the call's destination, called a gateway, arranges the packets in the proper order and directs them to the telephone number of the receiver or the IP address of the receiving computer.

Virtual Private Network (VPN)

  • A VPN is a private network of computers linked using a secure "tunnel" connection over the Internet.
  • It protects data transmitted over the public Internet by encoding the data and "wrapping" them within the Internet Protocol (IP).
  • In a process called tunneling, packets of data are encrypted and wrapped inside IP packets.

Internet Services

  • Internet services include e-mail, chatting and instant messaging, newsgroups, telnet, file transfer protocol (FTP), world wide web, and VoIP.

Client/Server Computing

  • Client computers running Web browser and other software can access an array of services on servers over the Internet.
  • Services may all run on a single server or on multiple specialized servers.

Internet Backbone

  • Network access points (NAPs) and metropolitan area exchanges (MAEs) are hubs where the backbone intersects regional and local networks and where backbone owners connect with one another.
  • MAEs are hubs where the backbone intersects regional and local networks and where backbone networks connect with one another.

Cable Networks

  • Cable networks are major competitors of telephone company Internet providers.
  • They do not have a mobile option, although Optimum Cable (Comcast) and several other firms are developing a Wi-Max capability.

Networking Technologies

  • Client/server computing is a distributed computing model where clients are linked through a network controlled by a network server computer.
  • Packet switching is a method of slicing digital messages into parcels (packets), sending packets along different communication paths as they become available, and then reassembling packets at the destination.

Business-to-Business E-Commerce

  • Exchanges are independently owned third-party Net marketplaces that connect thousands of suppliers and buyers for spot purchasing.
  • Exchanges typically provide vertical markets for direct goods for a single industry.

Mobile Digital Platform and Mobile E-Commerce

  • M-commerce is especially well-suited for location-based applications and services.
  • Mobile e-commerce is the fastest-growing type of B2C e-commerce, although it represents only a small part of all e-commerce.

Project Management

  • The first step in managing project risk involves identifying the nature and level of risk of a project.
  • Each project can then be managed with tools and risk-management approaches geared to the level of risk.
  • Managing technical complexity can be done by using internal integration tools, project leaders with technical and administrative experience, highly experienced team members, frequent team meetings, and securing of technical experience outside the firm if necessary.

This quiz covers the competition between cable networks and telephone companies in providing internet access. It also touches on Wi-Max technology developments for metropolitan areas.

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