Lesson Twenty-Four Vocabulary Words

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Across
  1. 1. Acts like a switchboard through a firewall.
  2. 2. Examine a fingerprint, a voice pattern, or the iris or retina of an eye.
  3. 4. High-end programs designed to provide network control and include special functions for connecting computers and other devices.
  4. 5. An acronym for modulate-demodulate, which means to convert analog signals to digital and vice versa.
  5. 8. A software program such as Internet Explorer.
  6. 10. Describes a software architectural model relationship.
  7. 11. These connect personal computers, workstations, and other devices such as printers and scanners in limited geographical area.
  8. 12. A recent wireless technology that can deliver maximum speeds for up to 7 Mbps to your cell phone.
  9. 13. Provide connection speeds more that 30 times faster than dial-up connections.
  10. 19. This is similar to an intranet, but it allows specific users outside of the organization to access internal information systems.
  11. 20. A small, simple, inexpensive device that joins multiple computers together.
  12. 21. A type of fiber-optic telephone line that can transmit up to 1.544 megabits per second or can be used to transmit 24 digitized voice channels.
  13. 23. An Internet connection technology that provides for the transfer of information to a computer at a high-speed bandwidth over ordinary copper telephone lines.
  14. 25. Special hardware and software, protect individual companies' networks from external networks.
Down
  1. 1. This supports telephone services and is the world's collection of interconnected commercial and government-owned voice-oriented systems.
  2. 3. Uses coaxial cable to send and receive data.
  3. 6. These cover a large geographical are and can contain communication links across metropolitan, regional, or national boundaries.
  4. 7. When all of the computers are equal.
  5. 9. People who break into computer systems to steal services and information.
  6. 14. This is designed for the exclusive use of people within an organization.
  7. 15. Hardware and can be one of many types of servers.
  8. 16. Each device on the network is referred to as this.
  9. 17. Most WAN's consist of two or more LAN's and are connected by this.
  10. 18. These can include telephone systems, fiber optics, satellites, microwaves, or any other combination of these.
  11. 22. A variation of the LAN that uses no physical wires.
  12. 24. A worldwide system compounded of thousands of smaller networks.