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IT273: Networking Concepts
Prof: Marcus Allen
Unit 5: Network HardwareRichard Brown
Static is a technique in which a network administrator programs a router to use specific paths between
nodes
True or False: Bridges are protocol independent.
True or False: Repeaters operate in the Physical layer of the OSI model.
Firmware is a set of data or instructions that has been saved to a ROM.
True or False: A NIC has no room for a
Hubs Switches Routers BridgesConnecting multiple Ethernet
devices together and making them
act as a single network segment.
A network switch is a small hardwaredevice that joins multiple computerstogether within one local area network (LAN). Technically, network switchesoperate at layer two (Data Link Layer) of the OSI model.
Routers are physical devices that joinmultiple wired or wireless networkstogether. Technically, a wired or wirelessrouter is a Layer 3 gateway, meaning thatthe wired/wireless router connectsnetworks (as gateways do), and that therouter operates at the network layer of
the OSI model.
A bridge device filters data traffic
at a network boundary. Bridges
reduce the amount of traffic on a
LAN by dividing it into two
segments.
Hubs are classified as physical
layer devices in the OSI model. At
the physical layer, hubs support
little in the way of sophisticated
networking. Hubs do not read any
of the data passing through them
and are not aware of their source or
destination addressing.
As with hubs, Ethernet
implementations of network
switches are the most common.
Mainstream Ethernet network
switches support either 10/100
Mbps Fast Ethernet or Gigabit
Ethernet (10/100/1000) standards.
Home networkers often use an
Internet Protocol (IP) wired or
wireless router, IP being the most
common OSI network layer
protocol. An IP router such as a
DSL or cable modem broadband
router joins the home's local area
network (LAN) to the wide-area
network (WAN) of the Internet.
Bridges operate at the datalink layer (Layer 2) of theOSI model. Bridges inspect
incoming traffic and decidewhether to forward or discard it.
Ethernet hubs vary in the speed
(network data rate or bandwidth)
they support. Some years ago,
Ethernet hubs offered only 10
Mbps rated speeds. Newer types of
hubs offer 100 Mbps Ethernet.
Some support both 10 Mbps and
100 Mbps (so-called dual-speed or
10/100 hubs).
Switches can be connectedto each other, a so-called
daisy chaining method toadd progressively larger number of devices to aLAN.
Maintaining
configuration
information in a piece of
storage called the
routing table, wired or
wireless routers also
have the ability to filter
traffic, either incoming
or outgoing, based on
the IP addresses of
senders and receivers.
Ethernet bridge, for
example, inspects each
incoming Ethernet
frame - including the
source and destination
MAC addresses, and
sometimes the frame
size - in making
individual forwarding
decisions.
After looking at the comparison chart I think I would have to go with a Switch. It seemsthat a switch is more of a higher-performance and would be beneficial if I was setting up
a office network. If I’m going to have multiple computers set up on a network I have to
consider network traffic, applications, file sharing and downloads. A switch seems that itwould have the ability to distribute the data better.