transmission distance of a signal will have a negative effect on the clearness of the signal. As the source is moved farther away from the receiver‚ a weaker signal will be present 7.1.3 UTP- summary (Short for unshielded twisted pair‚ a popular type of cable that consists of two
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operation over a distance of about 100m. Compare and contrast twisted pair cable‚ coaxial cable‚ fiber-optics‚ and wireless for this application. You should create a table or flow chart which would facilitate choosing between these options depending on circumstances. The table or flow chart should be submitted as part of your document. You may not submit a separate file. Twisted Pair Cable Media Type Coaxial Cable Wireless Fiber Optics UTP STP Maximum Segment Length (Thicknet)
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time can transmit c.Hub- Concentrates connections‚ allowing the network to see a group of nodes as a single unit b.10BASE2- Uses 185 meters of thin coaxial cable f.Switch- Isolates each port and sends a fram only to its proper destination e.Full Duplex-Both ends of a conneciton ca send at the same time a.10BASE5- Uses 500 meters of thick coaxial cable Concept Questions 1. Half duplex is a type of communication that allows for one station to recieve while the other station is transmitting while
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Exercise 4.1. Why are standards so important for NICs‚ connectors‚ and media? The NIC works at the physical and Data Link Layer only and does not use TCP or IP those are programs that are on your computer. Standards are put in place to make everything work good and ease. They are also developed to allow teaching. Without having standards there is chaos‚ in the computer world chaos means everyone goes back to using typewriters and mailing things through the post office. Exercise 4.1.2 The voltage
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Physical and logical network layout – Physical – actual layout of the computer cables and other network devices – Logical – the way in which the network appears to the devices that use it. • Common topologies: – Bus‚ ring‚ star‚ mesh and wireless 2 1 Bus topology • Uses a trunk or backbone to which all of the computers on the network connect. • Systems connect to this backbone using T connectors or taps. • Coaxial cablings ( 10Base-2‚ 10Base5) were popular options years ago. 3 Bus Topology
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Metallic Cable Transmission Media Introduction Transmission media -It is included in the lowest layer of the OSI protocol hierarchy – the physical layer. -Transmission medium is simply the path between a transmitter and a receiver in a communications system. Guided Transmission media -some form of conductor that provide conduit in which signals are contained -the conductor directs the signal examples: copper wire‚ optical fiber Unguided Transmission media -wireless systems – without
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CCTV VIDEO TRAINING MANUAL Someone once said‚ "Knowledge is the key to success". This rule also applies to the installation and maintenance of CCTV camera equipment. Have you ever installed a CCTV camera system and then had to go back to solve a problem that was overlooked. A basic understanding of CCTV video signals‚ can save you hundreds of man hours‚ improve customer relations and increase job profitability all at the same time. This manual will discuss problems and solutions for CCTV camera
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Chapter 7 Lab Exercise 7.1.1 Part of the distinction between LAN and WAN networks is ownership. Why is it impractical for an organization to own the entirety of a WAN? Why is it favorable for an organization to maintain ownership of the entirety of a LAN? Use your textbook and Internet research to compose your answer A) There are no limitations on WANs so they can be custom built for the size of the organization. For the purpose of organizational expansion. Exercise 7.1.2 Given the problems with
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access service in which the data flows over the local loop cable from home to the telco central office‚ where a DSLAM uses FDM technology to split out the data and send it to a router‚ and split out the voice frequencies and send them to a traditional voice switch. 8. Cable Internet- A term referring to internet access services provide by a cable company‚ using many components‚ including a cable modem‚ coaxial cable‚ and a CMTS at the cable company head end. 9. Default Route-A host IP setting that
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PROJECT 802 LAN STANDARDS The IEEE 802 Standard comprises a family of networking standards that cover the physical layer specifications of technologies from Ethernet to wireless. IEEE 802 is subdivided into 22 parts that cover the physical and data-link aspects of networking. The better known specifications include 802.3 Ethernet‚ 802.11 Wi-Fi‚ 802.15 Bluetooth/ZigBee‚ and 802.16. All the 802.11 specifications use the Ethernet protocol and Carrier Sense Multiple Access with Collision Avoidance
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