5) NABIHAH BT MD NAWAWI Date of experiment: 8th October 2012 Date of submission: 15th October 2012 TITLE: GEL ELECTROPHORESIS OF EXTRACTED DNA 0.5% AGAROSE GEL DATE: 8th OCTOBER 2012 OBJECTIVE * To study measure the size of base pair of DNA RESULT Lane from extremely left: Lane 1: Empty Lane 2: Elute 2 Lane 3: Empty Lane 4: Empty Lane 5: Elute 1 Lane 6: Empty Lane 7: Marker Lane 8: Empty 1 2 3 4
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Three”. User workstations and servers are often identified with “Layer Seven”. HUB Hub is a hardware device that contains multiple‚ independent ports that match the cable type of the network. Most common hubs interconnect Category 3 or 5 twisted-pair cable with RJ-45 ends‚ although Coax BNC and Fiber Optic BNC hubs also exist. Ethernet Hubs An Ethernet hub is also called a multiport repeater. A repeater is a device that amplifies a signal as it passes through it‚ to counteract the effects of
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points. Category 5e/6 cable: Enhanced CAT-5 and 6 have many improved specifications over CAT-5 with frequencies of 100MHz for 5e and 250 MHz for 6. Binder Groups: A group of 25 pairs of wires in a twisted pair cable with more than 25 total pairs. Hybrid/Composite cable: Cable that contains fiber‚ coaxial and twisted pair conductors bundled in a common jacket. Pulling Cable: the act of properly pulling cable from a box or spool. Wavelengths of Light: The distance and electromagnetic wave travels
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• Cost and Ease of Installation • Resistance to Environmental Conditions 4 :Categories • Bounded/Guided Media • Unbounded/Unguided Media 5.Bounded/Guided Media • Coaxial Cable • Twisted Pairs Cable • Fiber Optic Cable 6.Conclusion TRANSMISSION MEDIUM Transmission medium is the physical path between transmitter and receiver in a data transmission system.The
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CAT5e‚ CAT6‚ UTP (Unshielded Twisted Pair)‚ and STP (Shielded Twisted Pair) to just name a few. Coaxial has been in use for the longest period of time and one of the first types used in networking. CAT5e is the most common used today in networking with the bandwidth it supports and is available in UTP or STP. CAT6 can support any application that “lower” cables can and also has a higher bandwidth and is available in UTP and STP as well. UTP is unshielded twisted pair‚ which means that the cables twisted
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NT1310 Unit 4 Exercise 1 [Type the author name] Unit 4 Exercise 1: Cabling definitions Horizontal cable- Horizontal Cable-The cabling between and including the telecommunications outlet and the horizontal cross-connect. Horizontal cabling is considered the permanent portion of a link; may also be called horizontal wiring. Backbone cable- is a cable connection between telecommunications or wiring closets‚ floor distribution terminals‚ entrance facilities‚ and equipment rooms either within or
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digital voice. (Oliviero & Woodward‚ 2011) Unshielded Twisted-Pair: (1) A pair of copper wires twisted together with no electromagnetic shielding around them. (2) A cable containing multiple pairs of UTP wire. Each wire pair is twisted many times per foot (higher grade UTP cable can have more than 20 twists per foot). The twists serve to cancel out electromagnetic interference that the trans-mission of electrical signal through the pairs generates. An unshielded jacket made of some type of plastic
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network including details of how the intranet and extranet services will be provided. TASK1 |Media used |Twisted pair cable | | |Coaxial Cable | | |Fiber
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device) Cabling eg coaxial‚ optical‚ twisted pair In cabling you have a coaxial cable‚ optical cable and a twisted pair cable. Coaxial cable is mostly used on computers out of the three. Coaxial was used in the 1980’s and early 90’s‚ however they started using it again with broad band and also is used for connecting a dish from a TV to the roof. The data transfer rate of the coaxial cable is 100 Mbps (Megabits per second). Coaxial and twisted pair uses copper cables to transfer their data however
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impairments ∗ Attenuation ∗ Twisted pair has more attenuation than coaxial cable which in turn is not as good as optical fiber – Interference ∗ Can be minimized by proper shielding in guided media – Number of receivers ∗ In a shared link‚ each attachment introduces attenuation and distortion on the line Guided transmission media • Transmission capacity (bandwidth and data rate) depends on distance and type of network (point-to-point or multipoint) • Twisted pair – Least expensive and most widely
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