Question #1 (a)Requirements for 4G & challenges: 4G is fourth generation standard for mobile phones and telecommunication. It is preceded by 3G. 4G designer has been facing some technical challenges against the requirements. Yes‚ 4G can meet all requirements if designer overcome the challenges. Data in 4G traffic is centric‚ data traffic channel increase instead of voice traffic channels. In wireless link user demand for services with the implementation of Asymmetric Digital Subscriber Line
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Introduction: The purpose of this experiment is to use sodium borohydride to reduce benzil. However‚ stereochemistry allows for five possible products. If only one carbonyl group is reduced during the reaction a racemic mixture of benzoin will be the product that is produced. After the first reduction a chiral center forms causing the second reduction to occur from only one side of the ketone. Depending on which side the second reduction take place there are three possible products including: a racemic
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in the lecture course‚ and to familiarize you with the principles employed in identifying a simple organic compound. Occupational Health and Safety Notices The Elements 1. Nitration of acetanilide 2. Hydrolysis of p – nitroacetanilide and thin layer chromatography 3. Separation of a three – component mixture by extraction 4. Completion of experiments from day 1 to 4 5. NMR workshop 6. Sandmeyer Reaction: Preparation of p-chloronitrobenzene 7. Synthesis of benzilic acid from
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implementation available today. Application Layer (7) This layer represents the various network applications such as e-mail reader‚ Web browser‚ Hypertext Transfer Protocol (HTTP)‚ File Transfer Protocol (FTP)‚ and Network File System (NFS). ✦ The application layer provides a user interface and processes network data. ✦ The application layer on the sending host produces the network data to be transmitted from the sender host. ✦ The application layer on the receiving host consumes the network
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the following: o On which layers of the OSI model do WAN protocols operate? o What are some of these protocols? o On which OSI layers do switches and routers operate? o If routers reside at more than one layer‚ what is the difference between the OSI layers? When one looks at the seven layers of the OSI model‚ one can determine that layer three is where the WAN protocols operate on. Layer three is known as the Network Layer. The Network Layer performs several routing functions
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| Details of what a networking technology does‚ and how it does it | What is a de facto standard and what stanards-setting body creates them? | An informal standard‚ no company governs them | What are some reasons TCP/IP model is divided into layers? | Troubleshooting‚ Creation of network standards and protocols | Why is the TCP/IP model considered an "open" networking model? | It’s not owned by any specific organization | what do routers in a network do? | Mave data between LANs by linking
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purpose of this experiment is to extract and find quantitative amount of Beta-carotene from a carrot sample. The raw product(carrots) was extracted using simple distillation. The purity of the product will be characterized using percent yield‚ thin layer chromatography‚ Beer’s Law‚ and UV-vis. Beer’s law is used because in this experiment we are comparing our extraction of B-Carotene to the Stock B-Carotene. Beer’s law shows that absorbence of light at a specific wavelength is proportional to the concentration
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Chapter 1. The TCP/IP and OSI Networking Models Page 1 of 22 Chapter 1. The TCP/IP and OSI Networking Models This chapter covers the following exam topics: Operation of IP Data Networks Recognize the purpose and functions of various network devices such as Routers‚ Switches‚ Bridges and Hubs. Select the components required to meet a given network specification. Describe the purpose and basic operation of the protocols in the OSI and TCP/IP models. Welcome to the first chapter in your
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connected to a common medium | b. Node | d. A layer of the Open Systems Interconnection (OSI) model that frames upper-layer data and controls how data is placed on a medium | c. Media | b. A device on a network | d. Network | e. The physical means used to carry data signals | e. Data Link | c. The protocol data unit (PDU) used in Layer 2 of the OSI model | Concept Questions 1. What are the two main jobs of the data link layer? * Allows the upper layers to access the media using techniques such
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CHEM 2204 Chromatography Lab by wyk.wong » Fri Jul 11‚ 2014 10:25 am Results and Calculations Rf values Rf=(Distance moved by the spot (cm))/(Distance moved by the solvent front (cm)) Toluene: Rf=2 cm/3.8 cm=0.53 (Fluorenone) Rf=1.1 cm/3.8 cm=0.29 (Fluorene) Hexane: Rf=1.8 cm/2.2 cm=0.82 (Fluorene) Rf=0 cm/2.2 cm=0 (Fluorene Table 1: Experimental IR peaks compared to literature IR peaks for fluorenone Functional group Experimental peak (cm-1) Literature peak (cm-1) C-H 3010.5 3013
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