C H A P T E R 3 Chapter Goals • • • Become familiar with WAN terminology. Learn about different types of WAN connections. Become familiar with different types of WAN equipment. Introduction to WAN Technologies This chapter introduces the various protocols and technologies used in wide-area network (WAN) environments. Topics summarized here include point-to-point links‚ circuit switching‚ packet switching‚ virtual circuits‚ dialup services‚ and WAN devices. Chapters in Part III‚ “WAN
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Jamel McBean Consulting LLC. Client: ElectroMyCycle Date: 6/19/15 Project: Net 240 Design Scenario Chapter 8 1. What are ElectroMyCycle’s most important assets that must be protected with security mechanisms? Servers Routers Switches PC’s/Workstations The Physical Building 2. What are the biggest security risks that ElectroMyCycle faces? The biggest risks are from tech savvy vendors and customers applying a DOS attack amongst other types of attacks and internal non – compliance. VPN’s also can
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route! traffic!at!the!LAN.!In!addition‚!there!is!no!packet!manipulation!that!is!done!by!devices!in!this! layer.!Rather‚!this!layer!is!concerned!with!speed!and!ensures!reliable!delivery!of!packets.! ! Distribution!layer:!This!layer!includes!LANFbased!routers!and!layer!3!switches.!This!layer! ensures!that!packets!are!properly!routed!between!subnets!and!VLANs!in!your!enterprise.!This! layer!is!also!called!the!Workgroup!layer.! ! Access!layer:!This!layer!includes!hubs!and!switches.!This!layer!is!also!called
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servers * Network Interface Card (NIC) * Cabling and connectors‚ * Hub‚ concentrator‚ and more complicated network devices such as Bridge‚ LAN Switch and Router SOFTWARE COMPONENTS OF LAN NETWORK The software components of a LAN can be grouped into two categories: Inside PCs/workstations and servers Inside network devices (Hub/Bridge/LAN Switch/Router) HUB A Hub is a central device used on star network topology that repeats or amplifies signals‚ allowing the network to be lengthened or expanded
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Classful vs. classless protocols‚ and distance vector vs. link state protocols. Switching The definition of a switch or network switch is a small device that joins multiple computers together‚ working on layer two of the OSI‚ to form a local area network or LAN. Network switches are also known as smart hubs. Rather than simply dispersing the data evenly across a network the switch actually inspects the data packets for destination information‚ and then forwards the data to a specific location
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for campuswide network routing but is essential when configuring the default route on router but dynamic routing protocols enable the router’s routingtable to be dynamically updated toaccount for loss or canges in routes or changes in data traffic. 15. What are the four key issues in dynamic routing protocols?Path determination‚ Metric‚ Convergence‚ Load Balancing 16. Define hop count.The number of routers the data packet must pass through to reach the destination network 17. Which of the
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With some types of WAN interfaces‚ an external device such as a modem (Analog‚ Cable‚ or DSL) will be required to connect the router to the local point of presence (POP) of the service provider (orbit-computer-solutions.com‚ 2013). A core router is a router within the middle point of the WAN rather than at either end. The core router will be able to support multiple interfaces of the highest speed in use in the WAN core‚ and will have the ability to forward IP packets at the highest
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switches‚ hub etc. A logical network is the addressing used to connect these devices Job brief-secure wireless network for a coffee shop You need to install a wireless network for a coffee shop. They require certain network devices such as a firewall‚ router computers etc. It is a coffee shop where they want a wireless access point for their customers to login while drinking coffee. They have an Cisco approved wireless access point that you can use. They also require computers for front and back of desk
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a wiring closet. A patch panel is simply a bank of cable ports that allows all of the cables coming from each wall jack to be connected to the LAN if desired. Any active wall jack must have the corresponding port in the patch panel connected to a switch in the wiring closet. A wiring closet is a centralized room where these cables end. It is common for there to be many wiring closets in a building. The standard is that these wiring closets not actually be used for anything
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Classless Interdomain Routing (CIDR) was introduced to improve both address space utilization and routing scalability in the Internet. It was needed because of the rapid growth of the Internet and growth of the IP routing tables held in the Internet routers. CIDR moves way from the traditional IP classes (Class A‚ Class B‚ Class C‚ and so on). In CIDR ‚ an IP network is represented by a prefix‚ which is an IP address and some indication of the length of the mask. Length means the number of left-most
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