Transport
Frames
Packets
Segments
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Source and destination MAC address
Source and destination network address
Source and destination MAC address and source and destination network address
FCS field
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2Mbps
10Mbps
11Mbps
54Mbps
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Physical
Data Link
Network
Transport
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Packet switching
Collision prevention
Packet filtering
Broadcast domain enlargement
Internetwork communication
Broadcast forwarding
Path selection
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Application
Presentation
Session
Transport
Data Link
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Data, frame, packet, segment, bit
Segment, data, packet, frame, bit
Data, segment, packet, frame, bit
Data, segment, frame, packet, bit
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It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting.
It enables equipment from different vendors to use the same electronic components, thus saving research and development funds.
It supports the evolution of multiple competing standards, and thus provides business opportunities for equipment manufacturers.
It encourages industry standardization by defining what functions occur at each layer of the model.
It provides a framework by which changes in functionality in one layer require changes in other layers.
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Add more broadcast domains.
Create more collision domains.
Add more bandwidth for users.
Allow more broadcasts for users.
Reduce collisions within a broadcast domain.
Increase the number of collision domains.
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Half-duplex Ethernet operates in a private collision domain.
Half-duplex Ethernet has higher effective throughput.
Half-duplex Ethernet has lower effective throughput.
Half-duplex Ethernet operates in a private broadcast domain.
Half-duplex Ethernet operates in a shared collision domain.
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Thicknet coax
Thinnet coax
Category 5 UTP cable
Fiber optic cable
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Layer 2
Layer 3
Layer 4
Layer 7
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Buffering
Cut-through
Windowing
Congestion avoidance
VLANs
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Hub to hub
Switch to switch
Host to host
Switch to hub
Switch to host
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It is a globally unique IP address.
It is a unique address in a broadcast domain.
It is provided by the manufacturer of the NIC.
It is used as part of the IPX/SPX configuration.
Is is a logical address.
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Bill Gates
Low bandwidth
Too many users in a broadcast domain
Broadcast storms
Routers
Multicasting
The addition of hubs to the network
Large amount of ARP or IPX traffic
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To create fewer broadcast domains
To create more broadcast domains
To create one large broadcast domain
To stop one segment’s broadcasts from being sent to the second segment
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The destination host sends a request to the source for retransmission.
The jam signal indicates that the collision has been cleared.
The hosts will attempt to resume transmission after a time delay has expired.
An electric pulse indicates that the collision has cleared.
The router on the segment will signal that the collision has cleared.
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You will have more collision domains.
You’ll have no collisions on each segment.
It should be faster.
It will be less expensive.
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11000110-11000000-00011111
1100110000111111-00011000
11001001-00111111-00110010
11001100-01111000-00011000
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