CSC102 Computer Connectivity

S
Computer Concepts
Connectivity
CSC 102 Intro to Technology

Topics:
 Types of Networks
 Parts of a Home Network
 Broadband Options
Cable, DSL, etc.
 Modem, Router
 Wireless Routers
 Ethernet
 USB
 Firewire, HDMI, RCA
 Bluetooth

Network Architectures:
Types of Networks
 Defined by distance and
level of administration
 WAN, MAN, LAN, HAN, PAN
 Client/Server (Central Administration)
 Peer-to-Peer (P2P)
(Local Administration)

Network Types:
Defined by Distance

Network Types:
Defined by Level of Administration
 Client/Server – is like our Windows
school network, top down, strictly
managed by IT and networking software
(i.e. Linux, Windows Server).
 Peer 2 Peer – is like a Home Network, or
the Mac Lab – more like a community,
managed by each device individually.

Network Types:
Defined by Level of Administration

Home Network
 Broadband Access
DSL, Cable, FiOS, satellite (You pay an ISP)
 Modem converts signals to digital data.
(Usually supplied by provider)
 Router is a switching station that can route
connections from modem to other
computers, devices, printers, etc. wirelessly
or wired.

Basic Home Setup
Supplied by ISP
(Cable Company/Phone Company)
Supplied by You
(Linksys, Netgear)

Home Network:
Devices
Wired or Wireless (depending on device)
 Desktop Computers, Laptops, Smart TV’s,
Printers, Gaming Consoles, Smart Phones,
Tablets
 Router, Switches, Range Extenders,
External Hard Drives
 Thermostats, Garage Door Openers
Security Systems, Alarms, Cameras

Ethernet Cable
RJ-45 Connector
Connects to
Network adapter
Head is larger than standard
phone connector (RJ-11)

Transmission Media
(cabling/wires)
coaxial
fiber -optic
ethernet

Transmission Media
Wireless
Wifi – Wireless Fidelity
 IEEE Standard 802.11
Current is 802.11ac
 Operates at 2.4 GHz or 5 GHz frequency
 Frequency refers to the radio waves

Wireless Router Security
 SSID is the name that identifies the
network (linksys or netgear by default)
 Wifi Password can be set up
for your router
 WPA (Wi-Fi Protected Access) or WEP
(Wired Equivalent Privacy) should be
enabled to protect data in wireless
transmissions

How do I login to and/or
manage my router?
 For NETGEAR, you can use the IP address
192.168.1.1 and the default
username/password, or you can go to
routerlogin.com in your browser
 You can set up SSID name and passwords
here, as well as reset firmware, etc.
 Check Linksys as well for similar steps.

Connecting to the Internet
Broadband Internet Options:
 Cable
ISPs: RCN, Comcast, Service Electric
 DSL
ISPs: Verizon, Local Phone Companies
 FiOS – Verizon
 Satellite – DirectTV, Dish
 Mobile Broadband 4G – Verizon, AT&T

Broadband Options:
Cable Internet
 Typically the fastest available option
 Download is typically much faster than
upload – 20-50 Mbps vs 5-10 Mbps*
*(megabits per second)
 Speed can vary during peak times or heavy
traffic in your neighborhood
 Bundle with TV, Phone for better pricing

Broadband Options
DSL, FiOS, Satellite
 DSL (Digital Subscriber Line) uses 2
additional lines of traditional phone lines
for data. (5-10 Mbps/1Mbps)
 FiOS (Fiber Optic) – uses thin strands of pure
glass or plastic arranged in bundles.
50-500 Mbps, but not as widely available
 Satellite - @ 5-10 Mbps, usually an option
where DSL or cable is not available

Other Options
Mobile Broadband, Dial-Up
 Mobile Broadband - sharing or tethering
your computer to your phone connection
Involves a number of concerns, involving data
plans, but may be an alternative option
 Dial-up – painfully slow by todays standards,
was only available option in early web days
(56 Kbps)

USB Ports/Connections
Universal Serial Bus
 USB most widely used, connects phones,
keyboards, mice, input devices, output
devices, storage drives.

Other Connections
HDMI, Firewire
 HDMI is the first industry-
supported uncompressed, all-
digital audio/video interface.
 Firewire is a very fast external bus
standard that supports data
transfer rates of up to 400-800
Mbps. Used with video cameras &
hard drives. Lightning (iPhones),
Thunderbolt (Macs)

Other Connections
RCA, Bluetooth
 RCA connectors are standard
audio/visual cables.
 Bluetooth is short-range
wireless technology for
connecting devices such as
mice, keyboards, headphones.

CSC102 Computer Connectivity

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