Có 20+ tài liệu thuộc chủ đề "mạng máy tính nâng cao"
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Khoa Công nghệ Thông tin – Đại học Khoa học tự nhiên Bộ môn Mạng máy tính và Viễn thông. Môn: Mạng máy tính nâng cao. Bài thực hành số 2: Domain Name System (DNS) 1. DNS là một hệ thống phân cấp (hierachical) được dùng để xác định các máy tính trong mạng nội bộ cũng như trên internet....
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Copyright © 2010 by The McGraw-Hill Companies. McGraw-Hill eBooks are available at special quantity discounts to use as premiums and sales promotions, or for use in corporate training programs. To contact a representative please e-mail us at [email protected].. Information has been obtained by McGraw-Hill from sources believed to be reliable. However, because of the possibility of human or mechanical error...
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Understanding Networking: The Corporate Perspective. What Does the Company Need. How Will the Network Benefit the Company. Understanding Networking Jobs. vi Networking: A Beginner’s Guide. 3 Understanding Networking. Peer-to-Peer Network Relationships. Client/Server Network Relationships. Comparing Peer-to-Peer and Client/Server Networks. Remote Access. Understanding the OSI Networking Model. Understanding How Data Travels Through the OSI Layers. Learning About Network Hardware Components. 4...
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16 Installing and Setting Up Windows Server 2008. Understanding Windows Server 2008 Editions. Installing Windows Server 2008. Introducing Windows Server 2008 Hyper-V
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J ane Brownlow was the Sponsoring Editor for this book, which means that she ran the overall show. I have known Jane for over 10 years now, and I continue to be delighted to work with her. Also, Jane, thank you for cutting me some slack on the schedule!. Joya Anthony was the Acquisitions Coordinator for the book. This is...
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The Business of Networking. Before delving into the bits and bytes of networking, which are covered in the rest of the book, you should start by understanding the whys and wherefores of networking.. You’ll also discover how networks are supported from the business perspective, and how you can begin a career in networking. To be truly effective in the field...
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Certifications such as the Microsoft Certified Systems Engineer (MCSE), Microsoft Certified Systems Administrator (MCSA), or one of the appropriate CompTIA certifications can reduce the amount of experience that an employer will require. They are expected to be expert in the network operating systems with which they work, especially in the network’s key hardware, such as its hubs, routers, switches, and...
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This chapter discusses basic computer terminology and knowledge that you should possess to make the information in the rest of the book more useful and understandable.. However, it is a good idea to at least skim it, to make sure that you understand these subjects thoroughly.. or you can string about 1,000 bytes together for a kilobyte. Before you learn...
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computer’s resources over the network. Two fundamental types of network relationships exist: peer-to-peer and client/server. A peer-to-peer network is much like a company with a decentralized management philosophy, where decisions are made locally and resources are managed according to the most immediate needs. A client/server network is more like a company that uses centralized management, where decisions are made in...
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N Difficult to back up Reliably backing up all the data scattered over many workstations is difficult, and it is not wise to delegate this job to the user of each machine. Pros for Client/Server Networks. Client/server networks offer the opportunity for centralized administration, using equipment suited to managing and offering each resource. Client/server networks are the type commonly used...
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This can be accomplished in many different ways, depending on how often the LANs need to be connected to one another, how much data capacity (bandwidth) is required, and how great the distance is between the LANs. Intranets can also host other Internet-type services, such as FTP servers or Usenet servers, or these services can be provided by other tools...
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The application layer, layer 7, controls how the operating system and its applications interact with the network. The applications you use, such as Microsoft Word or Lotus 1-2-3, are not a part of the application layer, but they certainly benefit from the work that goes on there. An example of software at the application layer is the network client software...
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I f you were to compare a computer network to the human body, the network cabling system would be the nerves that make up the physical manifestation of the nervous system. The network cabling system is what actually carries all the data from one point to another and determines how the network works. How a network is cabled is of...
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In other words, if you’re using a network type with a capacity of 100 Mbps, that’s the total amount of bandwidth available to all of the nodes connected to the hub.. Token Ring networks wired in a star fashion are logically a ring.. The first portion—the number—can be 10, 100, or 1000, and this number indicates the data rate (in...
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If you’re designing a new LAN, generally your best bet is to use Ethernet in a star topology. You’ll find network equipment for this choice is readily available and inexpensive. in fact, the equipment is no longer available.) As noted earlier, for new networks, you should install Cat-5E cable at a minimum, even if you’re initially going to use 100Base-T,...
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Coaxial Cable. Many older networks (those built prior to circa 1992) still have coaxial cable installed.. Thin Ethernet cabling is wired in a bus arrangement, where each network segment starts with a terminator that connects to the end of the cable, runs to each node in turn, and ends with another terminator on the other end. The terminators contain special...
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Next, use a terminator to close off a large part of the segment and perform the test again. Keep moving the terminator and retrying the test until you discover which part of the cable slows down network performance on the segment. This type of problem is usually caused by a poor connection in one of the male cable-end BNC connectors,...
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It’s possible to use a home’s existing telephone wiring to provide a network connection between computers in a home. Some companies offer hardware that lets you network computers through a home’s existing power wiring. Three basic wireless standards are in wide use: 802.11b, 802.11a, and 802.11g. It’s counterintuitive, but in this particular case, 802.11a is a more advanced and faster...
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Putting together all the necessary pieces in the proper way is the art of network design. Repeaters operate at the physical layer of the OSI networking model. N Hubs echo all data from each port to all the other ports on the hub. These usually operate at ten times the basic speed of the hub. N Built-in switching, where nodes...
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Routers operate at the network layer (layer 3) of the OSI model, and they are far more intelligent than bridges in sending incoming packets off to their destination.. The router can translate from any of the protocols at layers 1 through 3 to any other protocols at layers 1 through 3 (provided the router has been configured and designed to...