Carlyle Brown
Network Protocols and Standards
Week 3 Homework
1. When was the first major standard describing a structured cabling system released?
c. 1995
2. Why is balance an issue in UTP cables, and what is TCL?
i. The balance or symmetry of the signal over the wire pairs helps minimize unwanted leakage of the signal. ii. TCL - Transverse Conversion Loss - The TCL measurement is obtained by applying a common-mode signal to the input and measuring the differential signal level on the output. a. TCL is sometimes called LCL (Longitudinal Conversion Loss). The ELTCLT value (expressed in dB) is the difference between the TCTL and the differential mode insertion loss of the pair being measured. TCTL is the loss from a balanced
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18. What is the data rate for gigabit Ethernet? i. 1000Mbps (802.3z)
19. What is a benefit of using shielded twisted-pair cabling? i. Cable with the addition of a shield is called shielded twisted-pair (STP) cable. The addition of this shield reduces the potential for electromagnetic interference (EMI) as long as the shield is grounded. a. EMI originates from devices such as motors and power lines, and from some lighting devices such as fluorescent lights.20.
20. Which cable, UTP or STP, is preferred by the industry? i. Industry testing on STP cable has shown that the addition of a shield does increase the usable bandwidth of the cable by increasing the noise rejection between each of the wire pairs. However, the tests have shown that there is not a significant advantage of placing a shield over a properly installed 4pair 100-ohm UTP cable. ii. Most manufacturers are recommending the use of UTP cable for cabling computer networks except for very noisy environments.
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Section 2-4
21. What are the color maps and pin # assignments for T568A and T568B? i. T568A – White-Green/Green/White-Orange/Blue/White-Blue/Orange/White-Brown/Brown a. 1 2 3 4 5 6 7 8 ii. T568B –
The whole thing is usually wrapped in another layer of insulation and, finally, in an outer protective layer. (/coaxial_cable.html)
1. Straight-through cable (39-40): connects the wire at pin 1 on one end of the cable to pin 1 at the other end of the cable; the wire at pin 2 needs to connect to pin 2 on the other end of the cable; pin 3 on one end connects to pin 3 on the other; and so on. (To create a straight-through cable, both ends of the cable use the same TIA pinout standard on each end of the cable.)
C:4‑29 Current E&P Computation. Water Corporation reports $500,000 of taxable income for the current year. The following additional information is available:
When first thinking of fixed line networks they think of the coaxial cable (coax) which connects to their television and twisted pair terminated with a RG-11 plug for their phones and faxes. There two variation of coax that are used in networking, thicknet (RG8) and thinnet
UPS is a main device that allows any computers to keep till the last time when the power source is down. This will keep as a power backup to the end of the power gets down. Its looks as a
Offer- This is defined as a clear manifestation of willingness to enter an agreement made by another person with full understanding that their assent to the bargain is an invitation and is concluded.
Coaxial cable uses a single conductor in the middle of a cable and the central conductor is surrounded by an insulator which is called the dielectric. Coax cables have become obsolete. Unshielded twisted pair cabling, also known as UTP cabling, has become the most common used network cabling. UTP cabling consists of four twisted pairs of wire, which have a different number of twists per foot, all encased on one sheath. This cabling is graded by different categories. Category 5 is recommended for Ethernet speeds of 100 Mbps. Category 5e, for running gigabit Ethernet or 1000BaseT networks. Category 6 and Category 6a are used to give better performance at higher speeds. Fiber optic cable is wave guided or light guided because it guides the light waves along the length of the cable. Single mode fiber optic cable can operate over long distances. Because fiber allows one mode of light to propagate, light pulses put on the fiber keep their shape much longer. This allows the light pulses to travel much further without interfering with other
But of course this is not the most used method to strip cable. It will work if you need it right then.
Cables that are easier to replace, replacement can be done during normal maintenance work, the bridge doesn’t get shut
parent carried the b allele. The F1 offspring of such a cross would be Bb, and
When tested in the lab, it was found that Advance Wire was mediocre in conductivity & abrasiveness, while also being heavier than all other samples.
During this time frame I was involved with the splice work on feeder 38M04. Feeder 38M04 is one of six feeders under the 59th St bridge whose joints are being proactively replaced. In order to work on the feeder joints under the bridge, a suspended scaffold was built on both the Queens and Manhattan side of the bridge to allow employees to safely work. I had the opportunity to work midnight shifts and climb the scaffold on both sides of the bridge and work alongside the splicers to splice together the new joints. The cables used under the bridge are XLPE (cross-linked polyethylene) or solid dielectric cable. This project gave me the opportunity to see how solid dielectric cables are spliced together and learn the different components of a solid dielectric cable. From a
Learning to me is allowing your brain to receive information and then applying in to your life experiences. I feel like face to face learning is better, however, online is more convenient. I prefer face to face because it offers a more personal relationship with your classmates and your professor. Although it is not practical for my life, I do wish I could attend classes in a regular environment. Online provides me that much needed space and opportunity to move at my own pace. Now that I have taken this class, I know that while I am receiving information I will be more aware of the information being delivered because I will now be more intentional with receiving the information.
reviewed and illustrated by comparison of the solutions adopted for two major European cable stayed
1. A budget is a formal statement of future plans, usually expressed in monetary terms.