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47 Cards in this Set

  • Front
  • Back
Advantages of Local Area Networks
Ability to share hardware and software resources.
Individual workstation might survive network failure.
Component and system evolution are possible.
Support for heterogeneous forms of hardware and software.
Access to other LANs and WANs (Figure 7-1).
Private ownership.
Secure transfers at high speeds with low error rates.
Disadvantages of Local Area Networks
Equipment and support can be costly.
Level of maintenance continues to grow.
Private ownership.
Some types of hardware may not interoperate.
Just because a LAN can support two different kinds of packages does not mean their data can interchange easily.
A LAN is only as strong as it weakest link, and there are many links.
Basic Network Topology
1. Bus/tree
2. Star-wired bus
3. Star-wired ring
4. Wireless
The orginal topology
1. Bus/tree
Workstation has a network interface card (NIC) that attaches to the ___ (a coaxial cable) via a tap.
Bus tree Topology
Tap is associated with what topology
Bus/Tree Topology
Baseband signals are bidirectional and more outward in both directions from the workstation transmitting.
Bus Tree Topology
Broadband signals are usually uni-directional and transmit in only one direction. Because of this, special wiring considerations are necessary.
Bus Tree Topology
Buses can be split and joined, creating trees.
Bus Tree Topology
Amplifier is used with
Repeater..Because the signal gets weaker and you need to do something to build it back up
Star looks like a star. design is based on hub. All workstations attach to hub.
Star-Wired Bus topology
You use multi access utitility
Token Ring
Star desighn is based on _____> All workstations attach to _________
hub hub
What segament your lan
Switch
What topology has unsheiled twistes pair usually used to connect workstation to hub
Star-wired Bus Topology
Switch are located at what layer
Layer 2
What is Hub?
Is a multiple switches
Logicall operates as a ______ but physcially appears as a ___________
ring, star
Star topology is based on _______which is functions similaryly to a hub
MAU(multi station access unit)
works station places a reservation with ________-
Central server
Reservation Protocols- workstation under heavy load act like
similiar to token ring
Reservation Protocols

Workstation-under light condition acts similiar to ________
CSMA\Cd Ethernet
What are the two sublayers in DATA Link Layer
Mac Sublayer (media access control) is where your mac address.

Logical link control sublayer
When people refer to LANs they often refer to its'
MAC sublayer name, such as 10BaseT
802.3
Ethernet
802.5
Token Ring
802.11b
Wireless Network
What is 10Base5

Transmission speed?
Signal Type?
Cable Type?
Maximum Segament Length?
10 Mbps
baseband
coaxial
500 meters
What is 10Base2

Transmission speed?
Signal Type?
Cable Type?
Maximum Segament Length?
10 Mpbs
Baseband
Coaxial
185 Meters
What is 1Base5

Transmission speed?
Signal Type?
Cable Type?
Maximum Segament Length?
1 Mbps
Baseband
Unshielded twisted pair
250 meters
A bridge is at what layer of the OSI layer
layer 2.
Transparent Bridges

Each bridge has two connections (ports) and there is a routing table associated with each port.
Where is the transparent bridge is found with CSMA/CDLANs
CSMA/CDLANs
A source-routing bridge is found with __________ ring networks
Token
Source-routing bridges knows your IP address but now it requests
The Mac Address and the path to get to you .
What is HUB?
a device that interconnects two or more workstations in a star-wired bus local are network
Who made Token ring popular
Token Ring
What is the IEE number for IBM Token Ring
IEEE802.5
What is the transmission speed; signal type; cable type maximum segment length
10Broad36
10pbs
Broadband
Coaxial
3600 meters
What is Transmission Speed
Signal Type ecable type
Maximum Segent Length
100baseTX
Speed 100 Mbps
Baseband
Cable Type 2-Pair Category or higher unshield
What is Transmission Speed
Signal Type ecable type
Maximum Segent Length
100baseTX
Speed 100 Mbps
Baseband
Cable Type 2-Pair Category or higher unshield
What is interconnecting Mulitple Network is called
internetworking
A device that interconnects two local area networks that both have a medium access control sublayer.
A bridge
A _________ examines tehdestination address of a frame and either forewards or does not forward the frame based on some address informtion stored within the bridge.
A filter
How can the bridge reduce amount of traffic on the interconnected networks
by dropping frames that do not have to be forward.
What is the address that is assigned to the network interface card (NIC)?
Mac Address.
Observers network traffic flow and uses this information to make future decisions regarding frame forwarding.
Transparent brige
The bridge creates the internal port table by usig a form of ____________
backward learning