Chapter 9: Communications and Networks

Fill In The Blank (1/2 point each)

1. A   ______________   provides a centralized storage area for programs, data, and information.

2. A   ______________   ______________   is the configuration, or physical arrangement, of the devices in a communications network.

3. An   _____________   is an internal network that uses Internet technologies.

4. A   ______________   is a general term referring to hardware or software that restricts access to data and information on a network.

5. ________________   is an Internet standard that allows you to upload and download files to and from a server.

6. A   ______________   ________________   is a type of connection that is always established between two communications devices.

7. The communications device responsible for performing the analog to digital conversion necessary to communicate over a telephone lines is called a   ______________   .

8.   ____________________________   transmits a signal using thin strands of glass or plastic, which pulses of light can travel through.

9. Bandwidth is the   ___________   of the communications channel.

10. A widely-used short-range broadcast radio technology capable of transmitting data at 1 Mbps is named   _______________  .

Short Answer (1 point each)

1. Draw an Ethernet bus network with 2 personal computers, a web server, a database server, and 2 printers. Label each device. (2 points).
   

   
   
   

2. What is the difference between a LAN, a MAN, and a WAN?

   
   
   

3. What is the difference between DSL/ADSL and Cable (CATV) transmission lines? Which supports higher transfer rates?

   
   
   

4. Define the purpose of an intranet and a firewall.