In: Computer Science
While there are several topologies and technologies used in WANs, the star topology with Ethernet is the dominant topology/technology pair in LANs. Consider why this is so. Think about properties such as management, reliability, security, costs, and so forth.
Instructions:
Write a post of at least two paragraphs discussing why you think
the tandem of star topology/Ethernet is dominant in LAN designs.
Include some of the advantages that other topologies/technologies
have over this tandem and try to explain why these others lost in
the marketplace.
Ethernet is by using far the maximum usually used neighborhood area community (LAN) structure.
A LAN is a network that connects computers and other gadgets in a particularly small place, usually a single constructing or a group of homes.
Ethernet functions high speeds, robustness (i.E., excessive reliability), low price and flexibility to new technologies. These functions have helped it keep its reputation no matter being one of the oldest of the LAN technology.
A key feature of Ethernet is the breaking of records into packets, additionally known as frames, which might be then transmitted the usage of the CSMA/CD (provider sense more than one get right of entry to/collision detection) protocol until they come on the destination without colliding with every other packets.
The presently maximum normally used shape of Ethernet is 100Base-T, also referred to as fast Ethernet, that may accommodate information switch speeds of up to approximately 100Mbps (million bits according to 2d). The more recent gigabit Ethernet supports data fees of 1 gigabit (1,000 megabits) consistent with second.
Fiber Ethernet makes use of optical fiber cables to carry data. Optical fiber allows transmission over very long distances (over 2,000 meters), has a totally big potential and is absolutely proof against electrical interference. However, it is distinctly costly.
Wireless Ethernet transmits and information through a low-strength microwave radios constructed into computer systems and different devices. It allows conversation within a radius of approximately one hundred meters.
Construction of an Ethernet network is notably simple. For example, inside the case of a basic, stressed out Ethernet, the hardware necessities consist of a network interface card (NIC) for each computer, a hub or transfer, and a few Cat 5 cables to attach the computers to the hub or switch. Expansion is also smooth, and may be performed through adding additional hubs and/or switches. The software program is typically constructed into the working machine, so that each one that is vital is some configuration steps, which includes assigning IP addresses for the community hosts.
Ethernet Network Reliability
Highly reliable networks are important to the success of the
corporation, so ease of installation and assist are number one
issues within the preference of community era. Since the advent in
1986 of celebrity-stressed 10BASE-T hubs, structured wiring
structures have persevered to evolve and hubs and switches have
become increasingly more dependable. Today, Ethernet networks are
rapidly coming near the reliability degree associated with their
phone ancestors, and are extraordinarily easy to understand and
administer.
Availability of Management and Troubleshooting Tools
Management tools for Ethernet, made feasible through enormous
adoption of control requirements inclusive of Simple Network
Management Protocol (SNMP) and its successors, allow an
administrator to view the popularity of all computers and community
factors, inclusive of redundant elements, from a primary station.
Ethernet troubleshooting equipment span more than a few
capabilities, from simple hyperlink indicator lighting to
state-of-the-art network analyzers. As a end result of Ethernet’s
reputation, massive numbers of humans were skilled on its
installation, upkeep and troubleshooting.
Scalability
The Fast Ethernet widespread, authorized in 1995, set up
Ethernet as a scalable generation. Now, the development of Gigabit
Ethernet, permitted in 1998, extends the scalability of Ethernet
even similarly. Now Ethernet scales from 10 to 100 to a thousand
Mbps.
Low Cost
IDC's evaluation of Ethernet and Fast Ethernet indicates a rapid decrease in price in keeping with port for each technology. There has been a speedy usual lower in the per-port rate for Fast Ethernet and Ethernet merchandise, and for shared hub ports, the difference among their charges is narrowing. Over time, Gigabit Ethernet consistent with port prices may be expected to enjoy similar fee decreases.