COMPTIA NETWORK+ STUDY GUIDE SECOND EDITION PDF
Over the past years, CompTIA's Network+ certification program has established itself as the premier general . Paree-Huff were the technical editors for this second edition of the Net- on this book to make it the best Network+ study guide available. . Full text of the book in PDF If you are going to travel but still need to. The contents of this training material were created for the CompTIA Network+ exam . about this third edition of our best-selling Network+ Study Guide, as it now tors helped out Andre by completing a second full technical edit just before. CompTIA ® Network+ ® Study Guide Second Edition CompTIA ® Network+ .. Study Tools Sybex Test Engine Electronic Flashcards PDF of.
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I am unaware why CompTIA listed this in the "network devices" section of their objectives, but bandwidth shapers are typically software. Proxy Server - A proxy server acts as a middle-man between clients and the Internet providing security, administrative control, and caching services. When a user makes a request for an internet service and it passes filtering requirements, the proxy server looks in its local cache of previously downloaded web pages.
If the item is found in cache, the proxy server forwards it to the client. This reduces bandwidth through the gateway. If the page is not in the cache, the proxy server will request the page from the appropriate server.
Nowadays, the functions of proxy servers are often built into firewalls. All they really do is interface between a 56K, T1, or T3 line and serial interface typically a V. Standard versions of PoE specify category 5 cable or higher. Power can come from a power supply within a PoE-enabled networking device such as an Ethernet switch or from a device built for "injecting" power onto the Ethernet cabling.
All of these require more power than USB offers and very often must be powered over longer runs of cable than USB permits. Spanning Tree Protocol - Spanning Tree is one of three bridging methods a network administrator can use. The simplest method is transparent bridging, where only one bridge or switch exists on the network.
The next is Source-Route, in which bridging address tables are stored on each PC on the network. VLAN - A broadcast domain is normally created by the router. This allows a virtual network, independent of physical location to be created. Trunk links provide VLAN identification for frames traveling between switches. Port Mirroring - Used on a network switch to send a copy of network packets seen on one switch port or an entire VLAN to a network monitoring connection on another switch port.
This is commonly used for network appliances that require monitoring of network traffic, such as an intrusion-detection system. The authentication server validates each client connected to a switch port before making available any services offered by the switch or the LAN.
With respect to peer to peer networks, you can use the Network Tasks pane to Create a New Connection, Set up a Home or small office network as well as change the Windows Firewall settings and view available wireless networks.
On the General tab you can configure the specific hardware settings parameters, drivers, etc as well as the protocols e. Client for Microsoft Networks. Additionally, you can install services from this screen as well e. Virtual Machine Network Service.
The Wireless Networks tab will show you the available networks and allow you to configure preference for each of the networks encountered. By correctly placing the devices, users will not generally experience signal loss of their connection to the network.
It is important to understand that there are many things that affect the wireless access point signal with respect to broadcast and receiving strength that include the construction and architecture of the building where the devices are distributed as well as general disruption of the frequency range that the access points operate on by other devices e.
Consideration needs to be given to what type of obstructions may be currently in the way physical fire breaks in between walls; metal superstructure, etc as well as future plans to subdivide offices. Electrical motors and other higher current carrying lines need to be considered as well to keep interference to a minimum. It is more work and it costs more in time money and effort to connect the WAPs using wired connections back to a switch or a router but it greatly reduces the potential connectively loss on the network; the loss of a single WAP where the WAPs are wired back results in only impacting the users of that one WAP instead of all WAPs up and downstream.
This point onto the network will allow the client device to configure itself with the necessary encryption if required and any other network required settings or else risk being defaulted off the network. Disabled simply means that everything is passed as clear text. Wired Equivalent Privacy WEP is the lowest form of the types of encryption available and is generally only used today to allow legacy devices that cannot handle more robust encryption protocols to gain somewhat secured access to the network.
WEP has been challenged and defeated for a number of years mainly due to the increase in computing power and the fact that the keys are alphanumeric or hexadecimal characters that are configured in 40 bit, 64 bit, bit, bit and bit strength.
Temporal Key Integrity Protocol TKIP is used in WPA to encrypt the authentication and encryption information that was initially passed on the wire in clear text before a network node could secure its communications on the network. The announcement signal that is sent out is called the beacon. Verifying Installation - the process that is outlined for making sure that all the settings needed to connect a network node to the wireless device.
The best practice steps generally include on initial installation of the Wireless Access Point WAP to do so without any security to verify that a client can get on the network.
Once that is successful you would then incorporate the security protocol that you wanted to use and to make sure the client can operate on the network again. Once this is successfully done it is assumed all other network nodes would be able to successfully repeat the same steps to access the network securely and with the traffic encrypted.
Domain 4. Each layer has a different responsibility, and all the layers work together to provide network data communication.
Layer Description Application Represents user applications, such as software for file transfers, database access, and e-mail. It handles general network access, flow control, and error recovery. Provides a consistent neutral interface for software to access the network and advertises the computers resources to the network.
Presentation Determines data exchange formats and translates specific files from the Application layer format into a commonly recognized data format. It provides protocol conversion, data translation, encryption, character-set conversion, and graphics-command expansion.
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Session Handles security and name recognition to enable two applications on different computers to communicate over the network. Manages dialogs between computers by using simplex rare , half-duplex or full-duplex. The phases involved in a session dialog are as follows: establishment, data-transfer and termination. It also breaks up large data files into smaller packets, combines small packets into larger ones for transmission, and reassembles incoming packets into the original sequence. Network Addresses messages and translates logical addresses and names into physical addresses.
It also manages data traffic and congestion involved in packet switching and routing. It enables the option of specifying a service address sockets, ports to point the data to the correct program on the destination computer.
Data Link The interface between the upper "software" layers and the lower "hardware" Physical layer. One of its main tasks is to create and interpret different frame types based on the network type in use.
LLC sub-layer starts maintains connections between devices e. MAC sub-layer enables multiple devices to share the same medium. Physical The specification for the hardware connection, the electronics, logic circuitry, and wiring that transmit the actual signal. It is only concerned with moving bits of data on and off the network medium.
Most network problems occur at the Physical layer. Here is an idiotic, yet easy way to remember the 7 layers. The first letter of each word corresponds to the first letter of the layers starting with Application and ending with the physical layer. Consult your book s for more information about these topics. QoS parameters include the maximum amount of delay, signal loss, noise that can be accommodated for a particular type of network traffic, bandwidth priority, and CPU usage for a specific stream of data.
These parameters are usually agreed upon by the transmitter and the receiver. More specifically, traffic shaping is any action on a set of packets often called a stream or a flow which imposes additional delay on those packets such that they conform to some predetermined constraint a contract or traffic profile.
Traffic shaping provides a means to control the volume of traffic being sent into a network in a specified period bandwidth throttling , or the maximum rate at which the traffic is sent rate limiting , or more complex criteria such as GCRA. This control can be accomplished in many ways and for many reasons; however traffic shaping is always achieved by delaying packets.
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Traffic policing is the distinct but related practice of packet dropping and packet marking. Load Balancing - is a technique to distribute workload evenly across two or more computers, network links, CPUs, hard drives, or other resources, in order to get optimal resource utilization, maximize throughput, minimize response time, and avoid overload. The load balancing service is usually provided by a dedicated program or hardware device such as a multilayer switch or a DNS server.
High Availability - aka Uptime refers to a system or component that is continuously operational for a desirably long length of time.
Since a computer system or a network consists of many parts in which all parts usually need to be present in order for the whole to be operational, much planning for high availability centers around backup and failover processing and data storage and access.
For storage, a redundant array of independent disks RAID is one approach. A more recent approach is the storage area network SAN.
Some availability experts emphasize that, for any system to be highly available, the parts of a system should be well-designed and thoroughly tested before they are used. For example, a new application program that has not been thoroughly tested is likely to become a frequent point-of-breakdown in a production system.
Cache Engine - aka server is a dedicated network server or service acting as a server that saves Web pages or other Internet content locally. By placing previously requested information in temporary storage, or cache, a cache server both speeds up access to data and reduces demand on an enterprise's bandwidth.
Cache servers also allow users to access content offline, including media files or other documents. All exam objectives are covered. View Instructor Companion Site.
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Request permission to reuse content from this site. Undetected country. NO YES. Exam N, 2nd Edition. Selected type: Added to Your Shopping Cart. Evaluation Copy Request an Evaluation Copy. Editions Previous Next. Covers all exam objectives including network technologies, network installation and configuration, network media and topologies, security, and much more. Includes practical examples review questions, as well as access to practice exams and flashcards to reinforce learning.
The fundamentals of outsourcing as a solution apply. Each module deals with a specific topic theory, which is then put to the test, in an applied environment, with our hands-on Laboratories. Learn networking basics: how to configure a workstation to connect to a network, analyze network traffic using a protocol analyzer, examine switch and router configurations, perform basic IPv4 addressing and subnetting, and research network security solutions.
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Networking fundamentals teaches computer science students the building blocks of modern network design. Networking Fundamentals Data networks Businesses needed a solution that would successfully address the following three problems: How to avoid duplication of equipment and resources How to communicate efficiently How to set up and manage a network Network history In the s users with stand-alone computers started to share files using modems to connect to other computers.
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A network is simply two or more computers that are linked together.
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VLAN membership can be configured through software instead of physically relocating devices or connections With the cost per port for switches following the same To learn the fundamental concepts, principles, and terminology of data communications.
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Network security is any activity designed to protect the usability and integrity of your network and data. Reduced cost: Cloud computing can reduce both capital expense CapEx and operating expense OpEx costs because resources are only acquired when needed and are only paid for when used.
A basic understanding of networking is important for anyone managing a server. This helps you give your presentation on Networking Fundamentals in a conference, a school lecture, a business proposal, in a webinar and business and professional representations. Focusing on the 1. Hub A network device that repeats the traffic it receives to all connected devices. CCNA 1 v3. To learn the fundamental concepts, principles, and terminology of data communications.
IP addresses are 32 bit long, hierarchical addressing scheme.
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Most often Ethernet cabling is Category 5 or 6, made up of twisted pair wiring similar to phone cables. Networking fundamentals 1. Enroll now at Global Knowledge. IP Addresses Although AWS no longer requires an Associate-level certification as a prerequisite to this exam, we recommend that you achieve the Associate-level certifcation prior to attempting the Advanced Networking Specialty exam.
Computer networking is the practice of interfacing two or more computing devices with each other for the purpose of sharing data. To simplify your tech training journey, we are consolidating our learning resources and retiring Microsoft Virtual Academy on June 10, High Availability - aka Uptime refers to a system or component that is continuously operational for a desirably long length of time.
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CompTIA Network+ Study Guide Authorized Courseware: Exam N10-005, 2nd Edition
It is only concerned with moving bits of data on and off the network medium. This allows a virtual network, independent of physical location to be created.
If for example a web hosting company was hosting several thousand websites the switch could direct requests to the specific servers that the websites are running on. The server and the client.