Network Devices Networking Essentials Chapter 5 Fall, 2012.

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Presentation transcript:

Network Devices Networking Essentials Chapter 5 Fall, 2012

Common Networking Devices  Hub Multiport repeater (huh?)  Repeater Why use it?  Modem (name comes from…) POTS DSL (can connect to switch) Need adapter to avoid hiss Cable (connects through television cable service)

More Networking Devices  NIC (stands for…) Two lights First light is for… Second light is for…  Transceiver  Bridge Purpose is to break up…  Switch Multiport bridge (huh?)

Still More Networking Devices  Wireless Access Point (WAP) Wireless form of a …  Router Used to connect… Have their own…  Firewall Can be software or hardware based Black box / DMZ Two internet connections for…

OMG! More Networking Devices  DHCP Server Provides______ to hosts Leases How it works MUCH more in Chapter 6!!!

Specialized Devices  Multilayer switch Does Layer 2 and Layer 3 switching (router)  IDS / IPS (page 148) Like a hardware based malware detection device  Load balancer (read example on page 149)

More Specialized Devices  DNS Server Like a two-column Excel spreadsheet Top-level domains: Com Edu Gov Int Mil Net Org (two-letters) designate… Don’t need a DNS server if…

Newer domains .firm .store .arts .info .cc .biz .travel .post

Even More Specific Devices  Bandwidth Shaper – used to… Don’t need one if you…  Proxy Server Caching proxy server Web proxy server  CSU / DSU Used to connect ___________ to the _________

Network Segmentation  What causes LAN congestion? (page 157)  Two advantages of using routers (page 158)  What to remember about routers (page 163)

Network Segmentation  Read and make sure you understand segmentation section on pages 157 – 165 in book. It’s not hard, but it IS important!

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