Chapter 7 PowerPoint Flashcards
What are some of the benefits of computer networks
Education, research, medicine and more benefits.
Worldwide communications
Spread of information and data
Possibly a vehicle for spreading misinformation
Helps to equalize access to information
What is a computer network made up of
Computing devices and interconnections
What are the devices located on a computer network called
Nodes
T/F Networks are wired only
FALSE. Networks can be wired or wireless.
What are examples of wired networks
Dial up
Broadband (cable modems and DSL)`
What are examples of wireless networks
WLAN, WWAN, MAN, LAN, PAN
Describe dial-up telephone lines
Analog lines that transmit digital data.
What modulates the carrier wave in a dial up telephone line
Modem modulator
What is the max speed of a dial up connection
56 KBps
What is the bandwidth
The capacity
What is the transmission rate that broadband provides
A transmission rate of greater or equal to 25 Mbps
Describe the download/upload speeds of Home Internet Connections
Asymmetric download/upload speed
Describe DSL
Uses phone lines but sends digital signal on different frequencies than voice
What does DSL stand for
Digital Subscriber Line
What is the download rate range for a DSL connection
Between 5-50Mbps
What is the upload range for a DSL connection
Between 1-5Mbps
Describe Cable Modem
Uses cable TV lines
What is the download range for a cable modem
Up to approximately 100Mbps
What is the upload range for a cable modem
Between 3 to 5Mbps
What are three examples of commercial or institutional internet connections
Ethernet
Fast Ethernet
Gigabit Ethernet Standard
What was the common type of commercial or institutional internet connection in the 1970s
Ethernet
Describe Ethernet internet connections in a commercial environment
Dedicated coaxial cable
How fast does ethernet in a commercial environment run
Operates at 10Mbps
Describe Fast Ethernet internet connections in a commercial environments
Dedicated lines (coaxial, fiber-optic, twisted-pair copper wire)