# Paper Writing Services both can be combined into one unit. Corporations and businesses must have CSU/DSU hardware because they are required when connected to a

Abstract
and lightning. They are capable of error reporting and loopback signals for testing. A DSU (Data Service Unit) is a device that manages digital data by converting signals coming in from the line to a network or computer. CSU/DSU operate in the physical layer of the OSI model and can be separate devices or both can be combined

1: , CLASS – Identify the functions of a CSU and DSU. How are they used in a corporate environment? 2: 3:A CSU (Channel Service Unit) is a device that provides termination for digital signals, it acts like a buffer between a LAN and a digital leased line such as a T1. It receives and transmits signals and ensures that signals a free of interference from both sides. The CSU protects equipment from electrical hazards such as spikes and lightning. They are capable of error reporting and loopback signals for testing. A DSU (Data Service Unit) is a device that manages digital data by converting signals coming in from the line to a network or computer. CSU/DSU operate in the physical layer of the OSI model and can be separate devices or both can be combined into one unit. Corporations and businesses must have CSU/DSU hardware because they are required when connected to a dedicated circuit such as T1 lines. They are basically a bridge/converter that takes incoming signals from the leased line (WAN) and converts it into sometng you can use on a computer (LAN). 6:The differences and examples are as follows: Expressions are a series of numbers, variables and operators such as addition, subtraction, multiplication and division, wch represent a value. here is an example of expressions: 5 + 2 , X + Y, 4X or X/Y. Equations are a pair of expressions that are both connected by an equal sign (=). Equations show that the expression on one side of the equation is also equal to the other side of the equation. here is an example of equations: X = 3 or X + Y = 8 A function is a specific type of equation. The function deals with the idea of an input value that will lead to an output value. here is an example of a function: Y = MX + B or F(X) = X squared

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