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Utilizing MIS 2e Chapter 6 Data Interchanges. David Kroenke. 09/30
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Slide 1

Utilizing MIS 2e Chapter 6 Data Communications David Kroenke 09/30 – 4:00AM © Pearson Prentice Hall 2009

Slide 2

Study Questions Q1 – What is a PC organize? Q2 – What are the parts of a LAN? Q3 – What are the choices for a WAN? Q4 – What criteria would you be able to use for contrasting WANs? Q5 – How does encryption work? Q6 – What is the motivation behind a firewall? © Pearson Prentice Hall 2009

Slide 3

Q1 – What is a PC organize? Q2 – What are the parts of a LAN? Q3 – What are the choices for a WAN? Q4 – What criteria would you be able to use for looking at WANs? Q5 – How does encryption work? Q6 – What is the reason for a firewall? © Pearson Prentice Hall 2009

Slide 4

Q1 – What is a PC organize? The graph beneath depicts three noteworthy sorts of systems. Systems are accumulations of PCs that speak with each other over an assortment of transmission lines utilizing a predefined set of conventions. (The Internet is talked about in Appendix 6A) Fig 6-1 Major Network Types © Pearson Prentice Hall 2009

Slide 5

Q1 – What is a PC arrange? Here are some extra qualities of systems: LAN correspondence lines dwell on-premises, making it simpler for a business to find a system wherever it picks. WAN correspondence lines are possessed by an outsider seller which is managed by the administration. A business contracts with the merchant to utilize the WAN lines. Each sort of system uses conventions which are sets of principles that two gadgets use to speak with each other. © Pearson Prentice Hall 2009

Slide 6

Q1 – What is a PC arrange? Virtual worlds and "the Internet" A web is a system of systems. Online worlds associate LANs, Wans, and different virtual worlds. The most well known web is "the Internet." Private systems of systems are called intranets . We utilize layered conventions to structure the stream of information crosswise over systems and webs. For any two gadgets to impart crosswise over systems, they should utilize a similar convention . Diverse PCs utilizing distinctive programming on various systems can speak with each other on the off chance that they utilize a similar convention in organizing the information they send to each other. This works since information interchanges is only a flood of organized bits. © Pearson Prentice Hall 2009

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Q1 – What is a PC arrange? Q2 – What are the parts of a LAN? Q3 – What are the choices for a WAN? Q4 – What criteria would you be able to use for looking at WANs? Q5 – How does encryption work? Q6 – What is the motivation behind a firewall? © Pearson Prentice Hall 2009

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Q2 – What are the segments of a LAN? This figure delineates a regular LAN. The segments are normally situated inside a half mile of each other on a solitary organization site. A switch , situated in the inside, is a unique reason PC that gets and transmits messages to PCs in the LAN. A system interface card (NIC) is an equipment part that connects every gadget\'s hardware to a link permitting PCs to send information over the LAN. Most new PCs now include an installed NIC that\'s incorporated with the computer\'s hardware. Fig 6-2 Local Area Network (LAN) © Pearson Prentice Hall 2009

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Q2 – What are the parts of a LAN? A media get to control (MAC) address fills in as a one of a kind identifier for each NIC on a LAN. Unshielded wound combine (UTP) links, appeared on the left, interface most end-client gadgets to a LAN. The wires are curved to decrease cross-wire flag obstruction . Optical fiber links , appeared on the privilege, might be utilized to interface switches and switches inside a LAN. The glass wires transmit motions as light beams. Cladding encompasses the center and contains the signs. Optical fiber conveys more activity than UTP links. Fig 6-3 Unshielded Twisted Pair (UTP) Cable Fig 6-5 Optical Fiber Cable © Pearson Prentice Hall 2009

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Q2 – What are the parts of a LAN? This figure indicates how a run of the mill LAN may be organized in a multistory building. See the mix of switches, UTP link, and optical fiber link on each floor. Fig 6-4 Typical Arrangement of Switches in a Multistory Building © Pearson Prentice Hall 2009

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Q2 – What are the parts of a LAN? The IEEE , Institute for Electrical & Electronics Engineers, is a panel that makes and distributes conventions and benchmarks utilized by practically every system. The IEEE 802 .3, or Ethernet, convention is utilized by all LAN gadgets. It determines equipment attributes and portrays how messages are bundled and handled. Installed NICs in new PCs bolster the 10/100/1000 Ethernet convention which portrays transmission rate speed. Switches identify the speed a gadget can deal with and impart at that speed. Correspondence paces are communicated in bits (not bytes): 1,000 = 1Kbs, 1,000,000 = 1Mbps, 1,000,000,000 = 1Gbps. © Pearson Prentice Hall 2009

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Q2 – What are the parts of a LAN? The IEEE 802.11 remote convention utilizes remote NICs (WNIC) to associate gadgets to systems like how wired NICs work. The most well known is IEEE 802.11g for rates up to 54Mbps. This figure portrays a combination of NICs and WNICs on a LAN. It additionally demonstrates get to points (AP) that utilization the 802.3 convention to communicate with a switch and the 802.11 convention to send and get wireless movement. © Pearson Prentice Hall 2009

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Q2 – What are the segments of a LAN? The outline on this slide and the following one is a synopsis of LAN and WAN systems. Fig 6-7 Summary of LAN and WAN Networks, Part 1 © Pearson Prentice Hall 2009

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Q2 – What are the segments of a LAN? Fig 6-7 Summary of LAN and WAN Networks Part 2 © Pearson Prentice Hall 2009

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Q1 – What is a PC organize? Q2 – What are the segments of a LAN? Q3 – What are the options for a WAN? Q4 – What criteria would you be able to use for contrasting WANs? Q5 – How does encryption work? Q6 – What is the motivation behind a firewall? © Pearson Prentice Hall 2009

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Q3 – What are the options for a WAN? WANs, utilizing the Internet, associate PCs situated at physically isolated locales by getting association abilities from an outsider, normally an Internet Service Provider (ISP). You can interface with ISPs utilizing either a dial-up modem, a DSL modem, or a link modem. The three essential elements of an ISP are: To give clients a true blue Internet deliver To fill in as a passage for clients to associate with the Internet To help pay for the Internet by gathering cash from clients and utilizing it to pay get to expenses and different charges. © Pearson Prentice Hall 2009

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Q3 – What are the choices for a WAN? Associating PCs to an ISP requires that advanced signs leaving the PC are changed over to simple signs . Simple signs coming into a PC must be changed over to advanced signs. The figure underneath looks at the two sorts of signs. Modem – tweak - demodulate Fig 6-8 Analog Versus Digital Signals © Pearson Prentice Hall 2009

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Q3 – What are the choices for a WAN? Modems are utilized to change over the signs forward and backward as appeared in the figure beneath. balance demodulate Fig 6-9 Personal Computer Internet Access © Pearson Prentice Hall 2009

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Q3 – What are the choices for a WAN? A dial-up modem utilizes general phone lines and a Point-to-Point Protocol (PPP) to associate a PC to an ISP. Regulation is administered by one of three guidelines: V.34, V.90, and V.92 . These norms determine how advanced signs will be changed into simple signs. The route in which messages are bundled and taken care of between your modem and the ISP is administered by PPP . A DSL modem shares a solitary correspondence line for a phone and a PC. It\'s substantially speedier than a dial-up modem and permits a client to keep up a steady system association with an ISP. Lopsided DSL , ADSL, gives distinctive transfer/download speeds. Symmetrical DSL , SDSL, gives the same transfer/download speeds. © Pearson Prentice Hall 2009

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Q3 – What are the options for a WAN? A link modem shares a solitary correspondence line for digital TV and a PC. It\'s likewise speedier than a dial-up modem and permits clients to keep up a consistent system association. Since link modems utilize an area dissemination focus , transmission speeds change in view of the quantity of system clients. A dial-up modem is considered narrowband in light of the fact that it utilizes transmission speeds under 56 kbps . DSL and link modems are viewed as broadband in light of the fact that their transmission speeds surpass 256 kbps . © Pearson Prentice Hall 2009

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Q3 – What are the choices for a WAN? Organizations can utilize systems of rented lines from broadcast communications organizations to interface PCs at assigned focuses situated at geologically conveyed destinations as this figure appears. The firm should rent each line independently. The lines utilize an assortment of get to gadgets to associate with each site: Switches Routers – uncommon reason computers that move network activity from one hub to another. Just predefined destinations can utilize rented lines. "n" focuses require n(n-1)/2 lines. These lines give ease associations with interior clients if the activity warrants it . © Pearson Prentice Hall 2009

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Q3 – What are the choices for a WAN? This diagram looks at line sorts, uses, and speeds . Fig 6-11 Transmission Line Types, Uses, & Speeds © Pearson Prentice Hall 2009

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Q3 – What are the options for a WAN? This figure portrays an open exchanged information arrange, PSDN , that is created and kept up by a seller who leases organize time to different associations without setup or upkeep costs . Every client site must leas

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