They may also be called enterprise networks if they connect all networks within an organization.
They typically connect many networks, including LANs.
They typically provide connections to other BNs, WANs, MANs, and the Internet.
They may also be called campus networks if they connect many BNs spanning several buildings as a single location.
They tend to use lower speed circuits than LANs.
All of the above can be used
Learn addresses by reading the source and destination addresses
Operate at the physical layer only
Connect two ore more network segments that use different data link protocols
Connect two or more network segments that use different network protocols
Have become more popular than layer 2 switches
Operate at the application layer
Operate only at the physical layer
Cannot connect two or more networks that use the same type of cable
May also be called TCP/IP gateways
Operate only at the data link layer
Routers can connect two or more networks that use the same data link protocol
Routers only process messages that are specifically addressed to it
Routers operate at the network layer
Routers perform more processing on each message than switch
Routers can choose the ¡°best¡± route between networks for forwarding a packet
Process all messages, even if the messages are not explicitly addressed to them
Can translate one network protocol into another
Are less complex than bridges
Are most often used as the interface between two or more networks that have similar data link and network layer protocols
Cannot perform a routing function
Layer 3 switches
None of the above
Multistation access unit backbones
Require more management than switches
Are not susceptible to time delays
Use data link layer addresses to move packets that leave the subnet
Require only a few set of TCP/IP addresses
Don¡¯t need much time to establish separate subnet addresses for each LAN
Performance is improved over traditional (bridged or routed) backbone networks
Each connection into the switch is a separate point-to-point circuit which supports simultaneous access by the LANs connected to the switch
There are many more networking devices in a switched backbone network
If the switch fails, so does the entire backbone network
The backbone essentially exists in the switch; there is no backbone cable
Multi-station device foundation
Main distribution facility
Manual data frequency
Multiplexer downstream flow
Maximum data facility
Several switches are used to build a VLAN
The switches in the VLAN can send packets among themselves in a way that identifies the VLAN to which the packet belongs.
In some multi-switch VLANs, the Ethernet packet is modified based on the emerging IEEE 802.1q standard.
In some multi-switch VLANs, a new VLAN packet encapsulates the Ethernet packet.
All of the above are true statements.
Going from 100Base-T Ethernet to 10Base-T Ethernet
Going from 100Base-T Ethernet to gigabit Ethernet
Adding additional circuits alongside heavily used ones
Replacing a shared circuit backbone with a switched circuit backbone
Providing a faster circuit to the server
Using the same protocols in the backbone and the LANs
Using static routing in low to moderate traffic conditions
Ensuring that backbone devices have sufficient memory so that packets do not have to be retransmitted by the sender
Translating packets from one protocol to another as they enter the BN
None of the above
Restricting (or moving) applications such as desktop videoconferencing
Using network devices to ensure that broadcast messages do not go to other networks
Encouraging the use of applications such as medical imaging
Sending status information to all computers on all LANs in the backbone network
Restricting (or moving) applications such as multimedia
Access layer composed of 10/100 layer 2 Ethernet switches
Distribution layer composed of layer 3 Ethernet switches of 100 (or 1000) Base-T
Core layer composed of layer 3 Ethernet switches running 10 (or 40) GbE over fiber
Coax cabling throughout LANs and BN