Question

What is the data transmission time, assuming no errors or overhead, to send a 2 GByte file over a link with a 2 Gbps line rate? Remember that the ‘G’ in GByte and Gbps have slightly different meanings. Round your answer to the nearest 0.1 second and show your work.

Answer 1

Answer:

The data transmission time will be 8 seconds (8.0s)

Explanation:

Using the formular:

T =A/S

T=Time = ?

Amount of Data = A = 2GByte

Speed = S = 2Gbps

The units of A and S are different

A is expressed in Bytes(B)

S is expressed in bits(b)

But :

1 Byte(B) = 8 bits(b)

T = A/S = 2GB/2Gb

since 1 Byte = 8 bits

T = 2 × G ×( B =8bits) / 2 × G × b

T = 2 × G × 8b / 2 × G × b

T = 2 × G × 8 × b / 2 × G × b

The common terms(2,G,b) cancel out

T = 8 seconds