WIRELESS COMMUNICATIONS AND MOBILE COMPUTING Wirel. Commun. Mob. Comput. 2004; 4:247–249 (DOI: 10.1002/wcm.220) Guest Editorial Special Issue: Scalability Issues in Wireless Networks— Architectures, Protocols and Services By Amitabh Mishra, Guest Editor Scalability of computer-communication networks has been an important topic for quite some time. Internet community examined the services and protocols for scalability, and switching and routing researchers looked at the scalability of the switches
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over one or more networks. * IPX/SPX: Internetwork Packet Exchange/Sequenced Packet Exchange is the protocol suite originally employed by Novell Corporation’s network operating system, NetWare. It delivers functions similar to those included in TCP/IP. Novell in its current releases supports the TCP/IP suite. A large installed base of NetWare networks continue to use IPX/SPX. * NetBEUI: NetBIOS Extended User Interface is a protocol used primarily on small Windows NT networks. NetBEUI cannot
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4 10-11 7 References 12 Database Question 1: Data Model/Database Model Flat file Flat file data model is model where data was store as a plain text file in a single table. Each line of the table hold each record with field and it is separated by commas or tabs. It cannot contain multiple tables like relational database. All the data stored by flat file, a computer file system will be store in a single
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NT 1210 Lab 3.1.1, 3.2.1, 3.3.1 The Purpose of Reference Models Exercise 3.1.1 What would happen if wireless devices were not governed by the Wi-Fi Alliance and each vendor had its own standards and protocols? What impact would this have on your personal life or business communications? The process of marketing the wireless devices would be much slower than if the Wi-Fi Alliance wasn’t governing them. This would impact my personal life or business communications in a big way. The reason is Wi-Fi
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IT331-CNS Capstone 6/28/12 OSI Model 1. Explain in detail the functions of each layer of the 7-layer OSI model. a. Layer 1 – Physical Layer – To establish and terminate the connection to a media source, it also does the conversions of data from one form to another. b. Layer 2 – Data-Link Layer – Transmits data from one point to another. c. Layer 3 – Network Layer – Transmits data from one host to another on another network. d. Layer 4 – Transport Layer – Controls
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Courses with Lectures and Labs Course No CAP510 Cours Title COMPUTER NETWORKS Course Planner 15946 :: Gunit Kaur Lectures Tutorial Practical Credits 4 0 0 4 Text Book: 1 Behrouz A. Forouzan, Data Communication and networking, 4th Ed., Tata McGraw Hills year of publication 2006 Other Specific Book: 2 Andrew S. Tanenbaum,Computer Network 2nd Edition, PHI, Third Edition 1997 3 Comer E. Doughlas,Computer Networks and Internets, 2nd Ed., Pearson, 2000 4 W. Stallings,Data and Computer
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hardline phone and using mail service. No more on the go communications. 3.1.2 The OSI model. It actually shows the process. 3.1.3 Physical, Data, Link, Network, Transport, Session and Presentation. 3.1.4 If its too general the reader wont understand completely. And if its too focused or granular on details it will bore the reader. 3.2.1 Physical – Device Data Link – Physical address Network – Path determination Transport – End to end connections Session –
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paper describing the OSI model and how it relates to a network. Your response should include answers to the following: • On which layers of the OSI model do WAN protocols operate? • What are some of these protocols? • On which OSI layers do switches and routers operate? • If routers reside at more than one layer, what is the difference between the OSI layers? Introduction: The OSI model was introduced in 1984. Although it was designed to be an abstract model, the OSI model remains a practical framework
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1. B. The network uses standards defined in TCP/IP RFCs, plus other standards. 2. C. Ethernet D. TCP/IP mapping 3. A. It exists as a written document. C. It has been passed through some form of review and approval or certification process. 4. A. De facto standard documents have been reviewed more thoroughly. C. De facto standards typically mean that the standards group has been authorized by many countries to create standards that apply to multiple countries.
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communications and network technology. Emphasis is on more complex aspects of data communications from the perspective of the computer science and information technology in the communication of data, and the interaction of remote systems. Course Objectives ← The objectives of the course are to enable students to: ← Understand and describe time, space, and frequency domains and their applications ← Understand and apply the abstract ISO 7 layer OSI reference model ← Understand
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