Computer Network Series: Does 2 mbps bandwidth mean the download speed?

This article is useful for the Internet-savvy Tom and helps avoid jokes in the future. Of course, this is common sense for the great gods.

I believe many people have this problem: how can I download kb/s at a 4 M bandwidth.

I will say this when I'm not learning ..... after finishing the course today, I finally understood what the teacher said. I sent it to people who don't understand it. I don't know any jokes in the future --,

All right, let's get started.

I. Differences between the communication field (network) and T, G, M, and K in the computer field (memory:

In the computer field, let me call it memory: The data volume in the computer memory is usually measured in bytes. One byte (byte, written in uppercase) represents eight bits (bit, written in lowercase B ).

The "kilobytes" are represented by capital "K", which is equal to 2 ^ 10 (10 power of 2 ). That is:1kb = 2 ^ 10b = 1024b. 1kb = 8kb

In the field of communication, let's call it network transmission speed: K in lower case represents 10 ^ 3, not 1024. That is:1kb/S = 10 ^ 3 B/S = 1000b/s.

PS: note the case differences between B and B.

2. What is the download speed of 2 Mbps?

First:2 m/s = (2*(10 ^ 6)/8 B/S = 250000 B/S

Explanation: we need to convert the 2 Mbit/s network speed to the download speed. 2 Mbit/s = 2*(10 ^ 6) B/S, at this time, we get the data volume of B (B/S) transmitted per second (in lower case, bit.

Because a B represents 8 B, 2 m/s = 2*(10 ^ 6)/8 B/S = 250000 B/S, at this time, we get the amount of B transmitted per second (B/S, note that it is capital, byte, representing the memory data size ).

(Simply put, the two are lowercase B/S before dividing by 8, and B/S after dividing, because 1kb = 8kb)

Next:250000/1024 ≈ 244.4 k B/SHere we get the amount of memory transmitted per second, that is, our download speed.

The speed here is: How many bytes are transferred per second.

2 m/s: 2*(10 ^ 6) bits are transmitted per second.

Computer Network Series: Does 2 mbps bandwidth mean the download speed?