NIELIT 2017 OCT Scientific Assistant A (IT) - Section B: 22

Question

In time division switches if each memory access takes $100\;ns $ and one frame period is $125\;\mu s,$ then the maximum number of lines that can be supported is

• A. $625$ lines
• B. $1250$ lines
• C. $2300$ lines
• D. $318$ lines

Answer 1

Ans: A

2*max no. of lines*memory access time=one frame period

=> max no. of lines = One frame period  / (2 *  memory access time)

 = 125 uS / 2 * 100ns  = 625 lines

Answer 2

B

 

To calculate the maximum number of lines that can be supported in a time division switch with each memory access taking 100 nanoseconds and one frame period being 125 microseconds, you can use the formula:

 

N = T_frame / T_mem

 

Where:

- T_frame = 125 microseconds (125,000 nanoseconds)

- T_mem = 100 nanoseconds

 

Now, plug these values into the formula:

 

N = 125,000 nanoseconds / 100 nanoseconds

 

N = 1250

 

So, the maximum number of lines that can be supported in this time division switch is 1250 lines.