Introduction to Copper Cabling

Quiz answers

Chapter 2

1. (b)

2. (d)

3. (b)

4. (b)

5. (d)

Chapter 3

1. (c)

2. (a)

3. (b)

4. (a)

5. (c)

Chapter 4

Formula: gain = 10 log dB

1. (c) To convert from a log to a ratio, divide the log value by 10 then use the 10^x button to find the ratio.

    In this case, we start with –20/10 = 2, now 102 = 0.0101 or a reduction of 100 times.

2. (b) Use the formula above and put in the 30 mW and the 1 mW (see notes on dBm).

3. (c) Remember to add decibels to combine the effects.

4. (a) From the formula above.

5. (d) Start with the 23, divide by 10 = 2.3. Use the 10^x button to find the output/input ratio. This gives 199.5, or nearly 200. ...