comptia network certification 2009 edition pdf

... Chapte r Network Fundamentals E x am objecti ves in t h is c h apte r What is a Network? Logical Networking Topologies Physical Networking models Network Types 14 24 31 Introduction Networks ... a 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 ... the basic aspects of a network remain the same What Is an Internetwork? Just as computers can be connected together, so can networks An internetwork exists when two or more networks that are connected...

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. €If ... transmitted across the network, the problem may lie with that particular packet type Because the network monitor enables you to view the contents of all packets on the network, in many cases, ... location possible – it is a law of networking that when something breaks, it will be in the worst possible place) Wire Map Tester A wire map tester is generally used on networks that use twisted-pair...

Ngày tải lên: 04/07/2014, 13:20

... 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 ... travels 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 ... business, and now 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 following...

Ngày tải lên: 04/07/2014, 13:21

... Model and Networking Protocols E x am objecti ves in t h is c h apte r The OSI Model� The DoD Networking Model� Networking Protocols� 237 257 265 Introduction To prepare for the CompTIA Network ... users of the network will be unable to use the network Flooding the wireless network with transmissions can prevent other devices from utilizing the resources, making the wireless network inaccessible ... Wireless Networking ■■ ■■ ■■ ■■ ■■ ■■ 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...

Ngày tải lên: 04/07/2014, 13:21

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

Ngày tải lên: 04/07/2014, 13:21

... 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 computer on Network C The ... on the network number of the destination address Every computer has a table of network numbers, known as a routing table If there is an entry in the routing table for the destination network ... flowing on 601 602 Chapter 12 : ╇ Network Troubleshooting Methodology your network, especially when you’re troubleshooting IP connectivity issues on a large network This allows you to compare...

Ngày tải lên: 04/07/2014, 13:21

... change Q: What types of networks are most likely to use OSPF instead of RIP? A: Large enterprise networks and very large internetworks, such as corporate campuses and global networks Microsoft documentation ... with the physical cabling and network devices that connect you to the network Â� Troubleshooting often begins at the physical layer, where you need to determine if your network cards, hubs, and cabling ... possibility of loops on a switched or bridged network Â� Troubleshooting the Network Layer ■■ ■■ ■■ A great deal of your troubleshooting time will be spent at the network layer, as this actually controls...

Ngày tải lên: 04/07/2014, 13:21

... 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 ... onto the network This ensures that workstations will not simultaneously communicate on the network, as in the CSMA/CD method 802.11 Wireless The IEEE 802.11 standard addresses wireless networking...

Ngày tải lên: 04/07/2014, 13:21

... dissimilar networks so that both are able to communicate For example, if your Ethernet network is to be connected to a Token Ring network, you will need to have a gateway so that hosts in the two networks ... a legitimate solution 11 As a network technician, you are asked to deploy a network load balancer You need to configure a network load balancer on the 10.0.10.0/8 network for the Web development ... administrator of a small business network You notice 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 other...

Ngày tải lên: 04/07/2014, 13:21

... Load balancing, cache engines, technical network diagrams, and building schematics are not part of configuration management documentation Chapter 11: Network Troubleshooting Tools Which of the ... network to the specified destination Incorrect answers and explanations: A, C, and E.╇ Answer A is incorrect, because ping will test connectivity between clients, but will not display the network ... perform DNS queries and is used to troubleshoot from Windows-based systems You are the network administrator for a network that employs a Windows 2003 server and 30 Windows XP Professional � � workstations...

Ngày tải lên: 04/07/2014, 13:21

... the network are not having connectivity problems and since Computer8 cannot ping any other hosts, even on the local segment, it is possible that the network cable attaching Computer8 to the network ... ensuring that only legitimate users of your company network will be able to access these wireless access points What are some steps you can take to enable network connectivity to your wireless access ... D.╇ Answer B is incorrect, because by allowing a network s SSID to be broadcasted, all machines within range will be able to detect the wireless network and attempt to connect Broadcast the default...

Ngày tải lên: 04/07/2014, 13:21

... www.calstate.edu/sas/documents/focusonmath .pdf, provides information about the math assessment test, the Entry Level Mathematics Test (ELM) Page CSU Focus on English – 2009 Edition The English Placement Test ... Shore, 6th Floor, Long Beach, CA 90802-4210 Telephone: (562) 951-4744 CSU Focus on English – 2009 Edition College Readiness for All at the California State University Increasing student access ... Services at www.ets.org/csu for more information on how to register Page CSU Focus on English – 2009 Edition English Placement Test – Design Once admitted, students are required to take the EPT...

Ngày tải lên: 19/03/2014, 08:20

... Network operating systems (NOS), Network performance optimization, 497 Network ports, 417–422, 468 scanning for vulnerabilities, 419–422 Network protocols, 417–422 Network segmentation, 105 Network ... 125–136 Network diagrams logical, 487 physical, 485–487 Network documentation, 561, 565 Network driver interface specification (NDIS) Â� boundary layer, 255 Network fundamentals history on networking ... communications, 5–14 Â� logical networking topologies, 14–24 network types, 31–35 physical network models, 24–30 Network hijacking and modification, 213–214 Â� protecting, 215 Network IDs, 299–305 class...

Ngày tải lên: 04/07/2014, 13:20

... CompTIA Network+ Certification Study Guide This page intentionally left blank CompTIA Network+ Certification Study Guide Exam N10-004 2E Robert ... Chapter Network Fundamentals å°“ Introduction å°“ å°“ .1 What Is a Network? å°“ Logical Networking Topologies å°“ .14 Physical Networking Models å°“ 24 Network ... Cataloging-in-Publication Data CompTIA Network+ certification study guide / Robert J Shimonski [et al.] — 2nd ed p cm Includes index ISBN 978-1-59749-429-8 (pbk : alk paper) Computer networks—Examinations—Study...

Ngày tải lên: 04/07/2014, 13:20

... or multiple networks configured and accessible to facilitate both models simultaneously Logical Networking Topologies Network modeling is important for getting the first leg of network design ... to 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 � 11 12 Chapter 1: ╇ Network Fundamentals The Information Age Appears In...

Ngày tải lên: 04/07/2014, 13:20

... than 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 ... in depth in Chapter Virtual Local Area Network VLANs allow network administrators to divide the network by designating certain ports as part of a logical network Although several computers or ... 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 use...

Ngày tải lên: 04/07/2014, 13:20

... scope of a network, different terms have been created to classify these different 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 Â� Network Types Cables Both networks use cables, which are a common point of failure Each of the other network components has less chance of failing than a damaged or faulty cable Network...

Ngày tải lên: 04/07/2014, 13:20

... information 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 To access ... very few cables are used to connect systems together Network Types ■■ ■■ ■■ LANs are small- to medium-size networks, and generally connect network devices that are no more than a few miles of ... creating a home network that consists of one computer running an Apple iMac and another running Windows 2000 Â� Professional Each of them has network adapters installed Â� already I want to network them...

Ngày tải lên: 04/07/2014, 13:20

... 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, ... is also used in networking Wiretapping is as much a security risk for network cabling as it is for a business telephone line Wiretapping involves gaining physical access to a network cable The ... wires or fibers in a cable in place, so that it can then be plugged into a network card or other equipment on your network As you can see when looking at the cable connectors used for your phone...

Ngày tải lên: 04/07/2014, 13:20

... 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 the circuit for the network ... 70 Chapter 2: ╇ Network Media over the network cable These standards include Ethernet, Fast Ethernet, and Gigabit Ethernet Ethernet Ethernet is the standard for most of the networks today As ... technologies used on a network As with Token Ring, when a Media Standards workstation on an Arcnet network receives a token, it has the opportunity to communicate on the network If it doesn’t...

Ngày tải lên: 04/07/2014, 13:20