Thesis Ethernet and Network Essay

Thesis Ethernet and Network Essay Thesis: Ethernet and Network Essay EVOLUTION OF CAT WIRING CAT-3 Wiring: The original CAT-3 wiring was popular in the early years of the ‘90s. This wiring was unshielded and was utilized in many computer networks, until it was replaced by the similar, but higher-quality CAT-5. CAT-3 had the capacity of carrying data at speeds up to 10MB/sec at a bandwidth of up to 16MHz. CAT-4 Wiring: This wiring never gained much popularity due to the fact that it was quickly unseated by CAT-5, shortly after it was introduced to the market. This wiring had the capacity to transfer data at 16MB/sec at a bandwidth of up to 20MHz. CAT-5 Wiring: This type of wiring was very popular throughout the ‘90s, once when it replaced CAT-3 and CAT-4. Its ability to carry audio and video data made it ideal for computer networks and use in Ethernet cable applications. CAT-5 wiring has the capacity to relay information at speeds of up to 1GB/sec, at bandwidth frequencies of up to 100MHz. CAT-5e Wiring: CAT-5e wiring is an enhanced version of CAT-5 wiring in that it has the same data rate (1GB/sec) and bandwidth frequencies (100MHz), except CAT-5e allows for data to be relayed at distances of up to 1,000 meters. Standard CAT-5 wiring only allows for signal relays up to 100 meters, without the use of devices such as connectors or repeaters, to allow for additional distance. CAT-6 Wiring: CAT-6 wiring was a revolutionary step towards complete cable functionality, with data rates of 10GB/sec at frequencies of up to 250MHz; however, the original CAT-6 is only capable of supporting these requirements over distances of 37 meters or less before it is exposed to alien cross talk. CAT-6a Wiring: CAT-6a is able to support 10GB/s data rates, at a distance of 100 meters. That’s nearly three times the distance of standard CAT-6 cable. Also, CAT-6a cable raised the bar for operating frequency range, allowing for function at bandwidths up to 500MHz. CAT-7 Wiring: CAT-7 cable has provided a more reliable solution to 10GB/sec data rates over 100 meter distances at frequencies up to 600MHz. CAT-7 wire is the closest replacement to fiber optic cable, as far as efficiency goes; however, singlemode fiber optic cable signals have the ability to relay signals across miles and miles, without the use of repeaters. Vocabulary Term | Definition | 1000Base | Ethernet cable with a bandwidth of 1,000 Mbps. Also known as gigabit cable. | 100Base | Ethernet cable with a bandwidth of 100 Mbps. Also known as fast Ethernet cable. | 10Base | Ethernet cable with a bandwidth of 10 Mbps. | Adapter | A part that allows a device to be electrically or physically connected to another device. Network interface cards can be used as adaptors for network cables. | Antenna | An apparatus for sending and receiving radio signals. Wireless routers have an antenna instead of cable. | Backbone | The main line of a communications network that supports all the data being transmitted. | Bandwidth | The amount of information or data that can be sent over a communications channel in a given period of time. The higher a channel's bandwidth, the more information it can carry. | Boundary | The separation point between network segments. Boundaries are usually set by devices that control the data, such as routers and gateways. | Bridge | A hardware device that connect two networks and breaks the segments of one network into smaller groups. Bridges filter incoming traffic and decide whether to forward or discard it. | Bus | A network configuration in which all the nodes are connected to a common line with two endpoints. Bus topology is easy to connect and does not require a lot of cable. | Carrier Sense | The ability of a network device to "listen" to the network to determine if any other devices are trying to transmit data. | Carrier Sensing Multiple Access With Collision Detection | An Ethernet communication protocol in which devices check the network to see if it is clear before transmitting data. | Coaxial Cable |

3 Ways to Avoid Confusing Your Readers

3 Ways to Avoid Confusing Your Readers 3 Ways to Avoid Confusing Your Readers 3 Ways to Avoid Confusing Your Readers By Mark Nichol Word choice, insertion or omission of punctuation, and syntax (arrangement of words and phrases) all affect comprehension. In each of the following sentences, one of these components of sentence construction is the source of ambiguity or confusion. Discussion of each example follows, along with a revision. 1. Our organization has sponsored AIDS/HIV walks across the country. Across is often used as a synonym for throughout, but here, it prompts the unfortunate misapprehension that the walks are transcontinental in scope. In this case, throughout is a better choice: â€Å"Our organization has sponsored AIDS/HIV walks throughout the country.† Take-away: Remain vigilant about ambiguous wording. 2. These results are not surprising because cyber risks have evolved into a moving target. This sentence, as written, suggests that the reader, after learning from the second half of the sentence what is not the reason the results are surprising, will read in a subsequent sentence the reason they are. But â€Å"cyber risks have evolved into a moving target† is the reason the results are not surprising, which is made clear simply by applying a brief pause to the sentence in the form of a comma preceding the explanation, which renders the explanation a subordinate clause set off from the premise of the sentence (â€Å"The results are not surprising†): â€Å"These results are not surprising, because cyber risks have evolved into a moving target.† Better yet, begin the sentence with the explanation, still in the form of a subordinate clause: â€Å"Because cyber risks have evolved into a moving target, these results are not surprising.† Take-away: When a negative statement is followed by an explanation, separate the explanation, a subordinate clause, from the main clause. (A positive statement generally needs no such punctuation, though exceptions exist.) 3. By taking a risk-based approach, such changes can be tailored to fit the company’s specific risk posture. All too often, writers mistakenly craft sentences in which subordinate clauses placed as introductory phrases are assumed to pertain to the subject of the main clauses when the two elements are only tangentially related. Here, changes are mistakenly said to take a risk-based approach, but an unnamed actor must be persuaded to do so. In most cases, simply revise the subject so that it logically follows the subordinate clause: â€Å"By taking a risk-based approach, one can tailor such changes to fit the company’s specific risk posture.† Take-away: Be alert to dangling participles. Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Writing Basics category, check our popular posts, or choose a related post below:Fly, Flew, (has) FlownFlied?50 Latin Phrases You Should Know20 Classic Novels You Can Read in One Sitting