What do you think is the best medium for transmission of a signal P.pdf

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What do you think is the best medium for transmission of a signal? Please explain your answer. Solution TRANSMISSION MEDIA The means through which data is transformed from one place to another is called transmission or communication media. There are two categories of transmission media used in computer communications. 1. BOUNDED MEDIA: Bounded media are the physical links through which signals are confined to narrow path. These are also called guide media. Bounded media are made up o a external conductor (Usually Copper) bounded by jacket material. Bounded media are great for LABS because they offer high speed, good security and low cast. However, some time they cannot be used due distance communication. Three common types of bounded media are used of the data transmission. These are UNDUIDED MEDIA Unguided media, or wireless communication, transport electromagnetic waves without using a physical conductor. Unguided Transmission Media consists of a means for the data signals to travel but nothing to guide them along a specific path. The data signals are not bound to a cabling media and as such are often called Unbound Media. Signals are broadcast through air and thus are available to anyone who has a device capable of receiving them. In wireless communication, transmission and reception are achieved using an antenna. Transmitter sends out the electromagnetic signal into the medium. Receiver picks up the signal from the surrounding medium. Wireless transmission can be divided into three groups: radio waves, microwave, and infrared waves. The section of the electromagnetic spectrum defined as radio communication is divided into eight ranges, called bands. These bands are rated form very low frequency (VLF) to extremely high frequency (EHF). Transmission medium Unguided medium. There 4 basic types of Guided Media : Open Wire, Twisted Pair, Coaxial Cable, and Optical Fiber. Coaxial cable (or coax) carries signals of higher frequency ranges than twisted-pair cable. A fiber-optic cable is made of glass or plastic and transmits signals in the form of light..

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Homework: hmwk 5 Score: 0 of 1 pt Bookmatch 4-17 (book/static) Oli 3 of 5 (0 complete) HW Score: Que (Ratio analysis) Artz, Inc.\'s financial statements for 2015 are shown in the popup windowEE The chief financial officer for Artz has acquired industry averages for the following ratios in the popup window: EEB a. Compute the ratios listed above for Artz. b. Compared to the industry: (1) How liquid is the firm? (2) Are its managers generating attractive operating profit on the firm\'s assets? (3) How is the firm financing its assets? 4) Are its managers generating a good return on equity? a. Compute the ratios for Artz. The current ratio is (Round to two decimal places.) Solution a. Current ratio = total current assets / total current liabilties = 2000 / 800 = 2.5.

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Hand geometry 1. Definition 2. Importance 3. Advantages and disadvantages Signature recognition 1. Definition 2. Importance 3. Advantages and disadvantages Hand geometry 1. Definition 2. Importance 3. Advantages and disadvantages Signature recognition 1. Definition 2. Importance 3. Advantages and disadvantages 1. Definition 2. Importance 3. Advantages and disadvantages Signature recognition 1. Definition 2. Importance 3. Advantages and disadvantages Solution Hand geometry (1) Definition Hand geometry readers measure a user\'s hand along many dimensions and compare those measurements to measurements stored in a file. Hand geometry is a biometric that identifies users by the shape of their hands. Hand geometry is not thought to be as unique as fingerprints, palm veins or irises, fingerprinting, palm veins and iris recognition remain the preferred technology for high-security applications. (2) Importance Hand geometry biometrics is not a new technique. It is first mentioned in the early 70’s of the 20th century and it is older than palm print which is part of dactiloscopy. This technique is widely accepted and the verification includes simple data processing. Hand geometry is an ideal candidate for research and development of new acquisition, preprocessing and verification techniques. (3) Advantages Disadvantages Signature Recognition (1) Definition Biometric identification by automatically scanning a person\'s signature and matching it electronically against a library of own signature. It is a behavioural biometric. It can be operated in two different ways: Static: In this mode, users write their signature on paper, digitize it through an optical scanner or a camera, and the biometric system recognizes the signature analyzing its shape. (2) Importance (3) Advantages Disadvantages.

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