comptia network study guide pdf download

... network technician and to pass the CompTIA Network+ exam. We cover network models such as centralized and decentralized, the differences between a local area network (LAN) and a wide area network ... 1 EXAM OBJECTIVES IN THIS CHAPTER WHAT IS A NETWORK? 2 LOGICAL NETWORKING TOPOLOGIES 14 PHYSICAL NETWORKING MODELS 24 NETWORK TYPES 31 INTRODUCTION Networks have been around for many years, long ... technical editor for Security+ Study Guide and DVD Training System, (ISBN: 978-1-931836-72-2, Syngress), lead author and technical editor for Network+ Study Guide & Practice Exams: Exam

Ngày tải lên: 04/07/2014, 13:20

... using it. Network Monitors and Protocol Analyzers Network monitors and protocol analyzers monitor traffic on the network and display the packets that have been transmitted across the network. ... Troubleshooting Experienced network administrators know that cabling is one of the most common causes of network failure. For this reason, you should check cabling early in the network troubleshooting ... transmitted across the network, the problem may lie with that particular packet type. Because the network moni- tor enables you to view the contents of all packets on the network, in many cases,

Ngày tải lên: 04/07/2014, 13:20

... across the network. When data loops endlessly around the network in this way, it eats up the available bandwidth and can affect network performance. Not only can computers on the network experience ... DAMAGE AND DEFENSE Switching on Networks In terms of devices that provide network connectivity, switches have become the future of networking. Today’s computer networks have to support the combination ... and 5. now wants you to connect the two networks together. Your com- pany’s existing network is twice the size of the new network. To get these two networks connected together, which of the

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... OSI MODEL 237 THE DOD NETWORKING MODEL 257 NETWORKING PROTOCOLS 265 INTRODUCTION To prepare for the CompTIA Network exam, you should begin by reviewing the foundations of networking. Among these, ... 5: Wireless Networking 228 Many wireless networks that use the same frequency within a  small space can easily cause network disruptions and even denial of service (DoS) for valid network users. ... Exploits of Wireless Networks Examining the common threats to both wired and wireless  networks provides a solid understanding in the basics of security principles and allows the network administrator

Ngày tải lên: 04/07/2014, 13:21

... this for the Network+ exam. Private Network Addresses 325  Renumbering If using NAT, no readdressing of privately addressed networks is necessary to access public networks.  Networks Treating ... applications in its network, but is not connecting its network to the global Internet, the IP addresses used do not have to be globally unique. A network of this type is called a private network, and ... organization. Only networks that interface with public networks such as the Internet need public addresses. Using pub- lic addresses on the outside and private addresses for inside networks is very

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... new routers or network links are added to a network, is a routing loop, which occurs in this fashion: A source computer on Network A is trying to reach a destination 1 computer on Network C The ... receiving computer As you’ve worked through this guide, you’ve learned that routing takes place at the network layer, and routing is all about recognizing network and host IP addresses and mapping ... similar to the tasks given to the network layer within the OSI model Protocols that exist at the network later are responsible for finding a path through a network to the destination computer

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... change. What types of networks are most likely to use OSPF instead of RIP?Q: Large enterprise networks and very large internetworks, A: such as corporate campuses and global networks. Microsoft ... Identifying a Client’s Remote Network Access Problem There are multiple reasons that a client may encounter connectivity problems in gaining access to the network or network resources. In Exercise ... the physical cabling and network devices that connect you to the network. Troubleshooting often begins at the physical layer, where you  need to determine if your network cards, hubs, and

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... Subnetwork of a Metropolitan Area Network 802.6k Distributed Queue Dual Subnetwork of a MAN. Supplement for MAC bridging 802.6l Point-to-Point Interface for Subnetwork of MAN. Specification for network ... Computer Network local-network protocols RFC894 Standard for the transmission of IP datagrams over Ethernet networks RFC895 Standard for the transmission of IP datagrams over experimental Ethernet networks ... the network from interfering with one another when trying to transmit; if they do, a collision occurs. To reduce collisions, CSMA/CD devices listen to the network before transmitting. If the network

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... legitimate solution. As a network technician, you are asked to deploy a network load 11. balancer. You need to configure a network load balancer on the 10.0.10.0/8 network for the Web development ... a small business network. You notice 14. that as you add workstations to the network over time the speed of the network decreases, what devices would you replace in your network with what ... and now 5. wants you to connect the two networks together. Your company’s existing network is twice the size of the new network. To get these two networks connected together, which of the

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... Sarbanes-Oxley Act of 2002 As an organization that has computer networks and recognizes information security as an important role in how to develop your networks, you must be aware of ISO/IEC 27002:2005 Regulations ... Wiring schematics, physical/logical network diagrams, baselines, policies, procedures, configurations, and regulations B Wiring schematics, physical/logical network diagrams, load bal-ancing, ... engines C Wiring schematics, technical network diagrams, baselines, poli-cies, procedures, configurations, and regulations D Building schematics, physical/logical network diagrams, base-lines, policies,

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... 125–136 Network diagrams logical, 487 physical, 485–487 Network documentation, 561, 565 Network driver interface specification (NDIS) boundary layer, 255 Network fundamentals history on networking ... communications, 5–14 logical networking topologies, 14–24 network types, 31–35 physical network models, 24–30 Network hijacking and modification, 213–214 protecting, 215 Network IDs, 299–305 class ... 302 Network intrusion detection system (NIDS) network design with, 389–392 vs. NIPS, 388–389 Network intrusion protection system (NIPS) network design with, 389–392 vs. NIDS, 388–389 Network

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... together for research purposes.  Packet Switched Networks, where messages sent over a network are broken into packets. They are then sent over the network, and reas- sembled after reaching the ... be sent and received over the network, and provides utilities for working over a network. Although only a few educational institutions and the government were networked together through ARPANet, ... request to the server. Because of its popularity as a network OS, it was widely used on corporate and government networks. CHAPTER 1: Network Fundamentals 12 The Information Age Appears In

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... the servers of years past, making peer-to-peer networks a viable solution for smaller networks. In a peer-to-peer network, computers on the network act as equals, with each workstation providing ... depth in Chapter 9. Virtual Local Area Network VLANs allow network administrators to divide the network by designat- ing certain ports as part of a logical network. Although several computers ... things are, and how the network is configured. Although networks are often unique to one another, the topology of each network will share characteristics with one another. Networks will either

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... scope of a network, different terms have been created to classify these dif- ferent network types. The types of networks that could be created include: Local area network Wide area network ... area network Metropolitan area network Storage area network Personal area network Campus area network LAN and WAN LANs and WANs were the first types of networks to be classified by the ... cells. Network Types 31 Cables. Both networks use cables, which are a common point of 4. failure. Each of the other network components has less chance of failing than a damaged or faulty cable. NETWORK

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... infor- mation. The network is internetworked with a network belonging to a subsidiary of the company. The subsidiary’s network uses Apple computers, and uses AppleTalk as a network protocol. ... throughout the network. Exam Objectives Fast Track 37 A peer-to-peer network model has computers on a network acting  as equals, and acting as both clients and servers of the network. When ... CHAPTER 1: Network Fundamentals 36 SUMMARY OF EXAM OBJECTIVES In this chapter, we discussed the fundamentals of networking, including what defines a network, and how networks came to be.

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... access and travel across that network. Connectors attached to the ends of the cables are plugged into or coupled in some way with a network card or other device on your network. In doing so, a physical ... of a cable is to carry data across a network. A network card passes an electronic signal onto a cable and a connector is used to connect the cable to the network card or other device to the ... the network card or another device, it provides a connection between the device and the physical media that carries data across your network. MEDIA ISSUES As with anything dealing with networks,

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... topology of coax networks. A coax network uses a bus topology, which basically means that all of the network devices are connected in a linear fashion. Each device on the network completes ... using. CHAPTER 2: Network Media 70 over the network cable. These standards include Ethernet, Fast Ethernet, and Gigabit Ethernet. Ethernet Ethernet is the standard for most of the networks today. ... technologies used on a network. As with Token Ring, when a Media Standards 73 workstation on an Arcnet network receives a token, it has the opportunity to communicate on the network. If it doesn’t

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... into the types of cabling you’ll find on networks and the Network exam. As we’ve discussed, there are three types of physical media that can be used on a network: coaxial cable, twisted-pair cable, ... 3 is the minimum grade of cable that supports networking, but it is not the best choice for networks. CAT3 is a voice-grade cable used in phone networks, and its only real benefit beyond being ... with networking, or often forgotten. Nevertheless, elements such as wireless technologies, FireWire, and transceivers are impor- tant to networking. Such media is not only covered on the Network

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... external transceiver type Trang 2On networks that used 10Base2 and 10Base5 media, transceivers are used to connect to the cable and communicate with the network 10Base5 networks use a device called ... allows the workstation to connect to the network using an AUI cable When a MAU and AUI cable are used on a 10Base5 network, the onboard trans-ceiver of the network card isn’t used Instead, the transtrans-ceiver ... through the AUI cable from the network adapter card on the workstation On 10Base2 networks, no more than 30 transceiv-ers can be connected to any segment, while on 10Base5 networks no more than 100

Ngày tải lên: 04/07/2014, 13:21

... planet. A WAN is any network that crosses metropoli- tan, regional, or national boundaries. Most networking professionals define a WAN as any network that uses routers and public network links. The ... pass the Network+ exam, and pass it confidently, then you should buy this book and use it to study for the exam. The Network+ exam is designed to measure the technical knowledge of networking ... you to test your readiness for the real Network+ exam. Full Text of the Book in PDF If you are going to travel but still need to study for the Network+ exam—and you have a laptop with a...

Ngày tải lên: 10/12/2013, 16:15