Chapter 4 QuizHumberto Perez1.Which type of network cable contains multiple copper wires and usesextra shielding to prevent interference? Show
Get answer to your question and much more 2.Which type of data cable is used by television companies to carry dataand video signals? Get answer to your question and much more 3.Which term describes the interference when electrical impulses from onecable cross over to an adjacent cable? Get answer to your question and much more 4.A group of newly hired entry-level network engineers are talking aboutthe network cabling they are going to have to install as a team. What is acharacteristic of Ethernet straight-through UTP cable? Get answer to your question and much more When it comes to copper cabling, choosing the level of shielding you want the cable to have can prove a minefield of confusing acronyms and perplexing industry technology. We’ve put together this handy guide to help you understand the meaning of some of the most common terms. The shielding inside your cable acts as a barrier to protect the cable from electromagnetic interference (EMI), radio frequency interference (RFI) and crosstalk between pairs and adjacent cables. It also prevents the signal from the cable interfering with surrounding equipment. The various levels of shielding offer a range of different advantages suitable for a number of applications. Also known as UTP, this is currently the most common and basic method of cable construction, consisting of pairs of wires twisted together. There is no shielding, instead the symmetrical twist in the wires create a balanced transmission line, helping to reduce electrical noise and EMI. In addition, the different twist rates of each pair can be used to reduce crosstalk. In higher category cables, a cross-web filler may be found separating the individual pairs to help reduce alien crosstalk from adjacent cables. Often referred to as FTP, this type of cable features an overall foil shield wrapped around unshielded twisted pairs and a drain wire. When the drain wire is correctly connected, unwanted noise is redirected to ground, offering extra protection against EMI/RFI. This cable construction has an overall braid screen with unshielded twisted pairs. This cable is often referred to as an STP, however this term should be used with caution due to other shielded cables also using this term. Always check whether the cable will have any shielding and whether individual pairs have their own shield. The cable is capable of supporting higher transmission rates across longer distances than U/UTP and provides better mechanical strength and grounding due to the braid. This cable has both an overall braid shield and foil shield with unshielded twisted pairs. This cable offers effective protection from EMI both from the cable and into the cable as well as much better grounding due to the additional braid. This type of cable has no overall shielding but the individual twisted pairs are wrapped in a foil screen, offering some protection from EMI and crosstalk from adjacent pairs and other cables. This type of cable features an overall foil shield with individually foil tape shielded twisted pairs. These are similar to F/UTP cables, with the addition of a foil shield around each twisted pair. The cable construction is designed to provide the assembly with greater protection from crosstalk from adjacent pairs and other cables, RFI and EMI. Similar to F/FTP, the individual twisted pairs are wrapped in a foil tape before being wrapped in an overall flexible yet mechanically strong braid screen. The additional foil on the twisted pairs helps to reduce crosstalk from adjacent pairs and other cables. The braid provides better grounding. Offering the maximum protection from RFI/EMI, crosstalk and alien crosstalk, this cable has both an overall braid shield and foil shield, with individually foil tape screened twisted pairs. This type of cable provides the best level of protection from interference and better grounding due to the braid.
THE ACRONYM STRUCTURE DISASSEMBLED We hope this handy guide provides you with all the information you might need to help you make the decision on which cable shielding you need. However, we know that it can be a daunting prospect, so we’re always here to offer friendly advice and guidance. If you have any questions then please do not hesitate to contact us on 01488 685800 or email us. Cat5e, Cat6 and Cat6a are available in unshielded and shielded formats, Cat7 is only available as a shielded cable. VIEW THE COPPER CABLING RANGE:Which type of network cable contains multiple copper wire and uses extra shielding?STP and UTP Characteristics
STP features two insulated copper wires that are twisted around one another and then covered with an additional shield. This extra covering boosts interference protection. STP is often utilized in Ethernet applications. UTP cables are a popular cable choice for LANs.
Which type of Ethernet cable should be used to directly connect two devices that both use the same pins for transmitting and receiving data?An Ethernet crossover cable is a crossover cable for Ethernet used to connect computing devices together directly. It is most often used to connect two devices of the same type, e.g. two computers (via their network interface controllers) or two switches to each other.
What term describes the interference when electrical impulses from one cable cross over to an adjacent cable?Crosstalk is a disturbance caused by the electric or magnetic fields of one telecommunication signal affecting a signal in an adjacent circuit.
Which category of network components includes wires and cables used in a wired network?Transmission Media - Transmission media are the facilities used to interconnect computers in a network, such as twisted-pair wire, coaxial cable, and optical fiber cable.
|
What type of network cable contains multiple copper wires and uses extra shielding to prevent interference?
zusammenhängende Posts
Urheberrechte © © 2024 nguoilontuoi Inc.
