that you have for signal loss and lack of signal strength. Exercise 7.1.3 Media Infrastructure Summary UTP Phone Lines Used in telephone cables and computer networking Coaxial Television Cable Include feedlines connecting radio transmitters and receivers with their antennas‚ computer network (Internet) connections‚ and distributing cable television signals. Fiber-optic Can be used in optical illumination; computer networking Uses a customized infrastructure to run dedicated connections;
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M.R.I.E.M Topic: Optical Fiber Design by : Rahul Ohlan INDIA Brief flow of presentation 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Introduction What are Optical Fibers? Evolution of optical fiber Structure of optical fiber Workings principle of optical fiber Classification of optical fiber Optical fiber communication system Advantages / Disadvantages of Optical fiber Applications of Optical fiber Conclusion Evolution of optical fiber • • • • • • • 1880 – Alexander Graham Bell 1930 – Patents on tubing
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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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is attached to C and D. Server C is attached to server D. No hub is used. All cabling is CAT 3 UTP crossover cables. What is your physical topology? a. Star b. Bus c. Ring d. Mesh I believe this to be a mesh mainly because all the servers are connected to one another. There is no hub used and Cat 3 UTP would be the cable for use in a small topology such as this. Also‚ the Cat 3 UTP cable is used in 80% of all LANs. Concerning the network interface cards (NIC)‚ this allows the server to communicate
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www.jntuworld.com www.jwjobs.net INTRODUCTION The field of telecommunications has evolved from a stage when signs‚ drum beats and semaphores were used for long distance communication to a stage when electrical‚ radio and electro-optical signals are being used. Optical signals produced by laser sources and carried by ultra-pure glass fibers are recent additions to the field. Telecommunication networks carry information signals among entries which are geographically far apart. An entity maybe a computer
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Server A is connected to servers B‚ C‚ and D. Server B is attached to C and D. Server C is attached to server D. No hub is used. All cabling is CAT 3 UTP crossover cables. What is your physical topology? a. Star b. Bus c. Ring d. Mesh Answer: This would be an example of a modified “mesh” topology. No hub is used‚ just crossover cables and multiple Nic cards in each server. A B C
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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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a 100-Mbps token-passing‚ dual-ring LAN using fiber-optic cable. FDDI is frequently used as high-speed backbone technology because of its support for high bandwidth and greater distances than copper. It should be noted that relatively recently‚ a related copper specification‚ called Copper Distributed Data Interface (CDDI)‚ has emerged to provide 100-Mbps service over copper. CDDI is the implementation of FDDI protocols over twisted-pair copper wire. This chapter focuses mainly on FDDI specifications
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platforms. Answer: TRUE 11) In a ring topology‚ one station transmits signals‚ which travel in both directions along a single transmission segment. Answer: FALSE 12) Coaxial cable is similar to that used for cable television and consists of thickly insulated copper wire. Answer: TRUE 13) Fiber-optic cable is more expensive and harder to install than wire media. Answer: TRUE 14) The number of cycles per second that can be sent through any telecommunications medium is measured
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CIS 110 MID-TERM STUDY GUIDE 1. What is the ability of the world’s populace to volunteer and collaborate on large projects called? -CREATIVE SURPLUS 2. Joining as a group to use a specific product more efficiently is called? -COLLABORATIVE CONSUMPTION 3. What field of study is helping robots evolve toward a more human appearance? -HUMAN ROBOT INTERACTION? 4. Describe the function of the following: patient simulators‚ VeriChips‚ biomedical chip implants‚ RFID tags -PATIENT
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