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Friday, July 27, 2012

ATEC/ Computer Networks



 
A personal area network (PAN) is a network of personal devices for one individual, such as his or her portable computer, mobile phone, and printer.

False    
  True







 
Physicians can use telemedicine to perform remote diagnosis of patients.





  True

 
False    





 
PC conferencing is the use of networking technology to conduct real-time, face-to-face meetings between individuals physically located in different places.





  False


True    


 


 
In ____ transmission, data can travel in either direction, but only in one direction at a time.
 



half-simplex    
simplex    
  half-duplex 100%     
duplex    





 
In a ____, there are a number of different connections between the devices on the network so that data can take any of several possible paths from source to destination.
 



ring network    
star network    
bus network    
  mesh network

 





 


The accompanying figure displays a ____.
nar003-1.jpg





single-wire cable    
  coaxial cable


twisted pair cable    
fiber-optic cable    


 


 
Case-Based Critical Thinking Questions

Case 7-2
Gabrielle is the network administrator at a medium-sized company. One of her responsibilities is to purchase network devices to maintain the company network.

Gabrielle realizes that to improve network performance, she needs to buy and install a ____, which identifies the device on the network for which the data is intended and sends the data to that device only.
 



bus    
node    
bridge    
  switch

 


 


 
The ____ network consists of 24 Department of Defense satellites that are used for location and navigation purposes.





location positioning system (LPS)    
  global positioning system (GPS)

 
satellite positioning system (SPS)    
cellular phone    


 


 
A Slingbox is designed to ____________________ multimedia content—that is, to allow viewers to view content of their choosing at a more convenient location.
 


1.  placeshift
  placeshift


 


 
The ____________________ is a satellite-based location and navigation system.
 


1.  GPS 
Equals GPS
Equals
global positioning system
Equals
global positioning system (GPS)
Equals
GPS (global positioning system)


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