Sublayers of the data link layer The data link layer has two sublayers: logical link control (LLC) and media access control (MAC). Logical link control sublayer The uppermost sublayer‚ LLC‚ multiplexes protocols running atop the data link layer‚ and optionally provides flow control‚ acknowledgment‚ and error notification. The LLC provides addressing and control of the data link. It specifies which mechanisms are to be used for addressing stations over the transmission medium and for
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The recreation organization that is appropriate to display the Layers of Leadership is The Regional Municipality of York. The Regional Municipality of York is a government sector that stretches north from Toronto to Lake Simcoe and the protected Greenbelt. York Region’s diversity is evident in nine local municipalities‚ geography‚ economic development and population. York Region works to provide residents and businesses access to a broad selection of services and resources. The specific career
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Security at OSI Layers Muhammad Muzammil Syed Zeeshan Nasir Department of computer science FUUAST‚ Islamabad 1-OSI Model: In 1983‚ the International Organization for Standardization (ISO) and the International Telegraph and Telephone Consultative Committee (CCITT) merged documents and developed the OSI model‚ which is based on a specific hierarchy where each layer builds on the output of each adjacent layer. The OSI model is a protocol stack where the lower layers deal primarily with
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Three attacks in SSL protocol and their solutions Hong lei Zhang Department of Computer Science The University of Auckland zhon003@ec.auckland.ac.nz Abstract Secure Socket Layer (SSL) and Transport Layer Security (TLS) is the protocol above TCP‚ which can protect user’s privacy when they sending data from a client side to a web server‚ this is an important protocol due to the expansion of Internet. In fact‚ it is a long way to make the SSL/TLS protocol perfectly. However there are still
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Layer 2 Domains Paper Layer 2 Domains Paper We have chosen an extended star topology connection using a router to designate the VLANS and two 24 port switches to provide the most cost effective setup for this small office network. Being the very small nature of the setup we are using a class C network of 192.168.0.1 that we will designate the first 20 IP addresses of each VLAN as static to support any servers we might install as well as printers we may install in the future. The other
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Is Industrialisation leading to the depletion of drinking water resources? Water...Water...everywhere‚ but not a drop to drink??? How So? While seventy one percent of our planet is covered by water‚ it would seem that we could never run out of water. But did you know that of that seventy one percent water‚ ninety seven percent is salt water. Only the other three percent is fresh water‚ which is in the form of: oceans‚ glaciers
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COLUMN AND THIN LAYER CHROMATOGRAPHY Group 9 RAMOS‚ Sharina Joy; REYES Aina Marie; REYES Jallisa Maan; RUBIO‚ John Michael; SABINO Patricia Anne; SANTOS‚ Carlos Rafael ABSTRACT To separate the colored components of siling labuyo and to determine the purity of the components‚ the students performed a column and thin or solid-liquid chromatography procedure. The solid may be almost any material that does not dissolve in liquid phase. But for this experiment‚ the solid used by the students was
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Experiment #1: Thin-Layer Chromatographic Analysis of Drug Components | Performed on: Wednesday‚ May 8th‚ 2013 | | | 5/15/2013 | | Introduction: The goal of this experiment was to identify an unknown analgesic drug through the use of thin-layer chromatography. The drugs used were‚ Unknown #1‚ caffeine‚ aspirin‚ and acetaminophen. Thin-Layer Chromatography is a technique for identifying substances using a mobile phase (developing solvent) that draws up through a
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permits concerns related to networking hardware to be completely separated from those related to networking software. ___T_ 4. PDUs typically include “envelope information” in the form of specific headers and trailers. __F__ 5. The Session layer is equipped to request retransmission of all erroneous or missing PDUs when reassembly is underway‚ so that it can guarantee reliable delivery of data from sender to receiver. Multiple Choice Identify the choice that best completes the statement
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Thin-Layer Chromatography of Analgesics Abstract: In this experiment thin-layer chromatography (TLC) was used to determine the composition of an unknown mixture of analgesics given five references of AC‚ ASP‚ CAF‚ IBU‚ SAL‚ an unknown consisting of a mixture of three of the references‚ and two unknowns (6‚23) containing a single reference compound. The composition of the unknown mixture and two single unknowns were determined by spotting the reference compounds and the unknown compounds on two
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