Rhapsody Internet Cafe.

"Sister, go online. ”

"No place, didn't you see so many people waiting, queuing. The female network administrator didn't look up as always, and she was called an old lady at a young age, and she was slightly angry.

"It's okay, the one without the motherboard is open to me, I can fix it. ”

This is too familiar, the female webmaster raised her head suddenly, Ding Sheng had already taken out ten yuan and put it on the cash register, and turned around and left in a posture that she thought was very chic.

The female network manager resolutely raised her hand, collected money, swiped her certificate, and went smoothly.

"Network administrator, I report, he cut the line!"

"yes, we came first!"

It is not easy to wait for the opportunity, and the crowd is angry.

"That computer doesn't have a motherboard, you can do it. The webmaster stood up and explained.

"What's a motherboard? No, there's nothing, I only play games, I don't play motherboards!"

One of the young men with dazzling red hair had disbelief written all over his face.

What else can the female network manager say, thinking that there is a fool like you in the funeral family, no wonder it will be declining. But what about the service industry, it doesn't matter what you think, just smile.

"Oh less, the motherboard seems to be a bit like a car's engine, and it can't be turned on if you don't have it. The family members next to him quietly reminded him.

"I'm dizzy, if you don't say it earlier, I'm losing all my so-called face! Let's go and change my Internet café!"

This time, there were only three or four people left, but the elementary school students who were at the back of the line were very happy.

Ding Sheng came to the No. 15 machine, and the No. 14 on the left was an acquaintance, a warrior in the dungeon.

"Brother, remember me?" Ding Sheng gently patted the No. 14 warrior on the shoulder.

"Remember, do you want to inspect the host again?"

"Yes, excuse me. ”

I operated it according to the number of channels yesterday and started it smoothly.

Today's task for Ding Sheng is very simple, which is to write a driver for a WiFi module.

The cloning technology of nanomaterials can only completely replicate the built-in functions of the product, cloning a mobile phone is a mobile phone, cloning a rice cooker is a rice cooker, and restoring the original setting is a space-time machine.

If you want to add new technology on this basis, you have to go to Ding Sheng personally.

In 2010, although some mobile phones already came with WiFi modules from the factory, Ding Sheng's 5230 did not.

Without a WiFi module, you can't connect to a wireless network, so last night's situation of accidentally exceeding the traffic standard will inevitably appear again and again.

At present, the WiFi module on the market generally only supports Window, Linux, Android, ios and other systems, Guan Ju is a new system that was born yesterday, and naturally there is no ready-made thing to use.

In less than five minutes, Ding Sheng tailored a powerful WiFi driver for Guan Ju, and then in his previous professional habits, he virtualized an IP address and added a firewall to hide, which is basically impossible to crack with the current global technical means.

Under the cover of the firewall, Ding Sheng sent the SYN (SEQ=x) communication data transmission protocol to the world's largest network server.

Enter the SYN_SEND state.

The server immediately receives the protocol and responds with a SYN (SEQ=y)ACK(ACK=x+1) packet.

Enter the SYN_RECV state.

The client receives a SYN packet from the server and responds with an ACK (ACK=y+1) packet.

Enter the Established state.

Finally, TCP is established through multiple handshakes, and finally data exchange is reached with the server.

From then on, as long as it is covered by global communication operators, Ding Sheng's 5230 can access the Internet for free until the firewall he set up is discovered and cracked.

As for the internet speed, take the carrier's maximum. If necessary, it can be faster with the use of special means.

"Little brother, although I can't understand what you're doing, I feel like you're so powerful!"

This old brother has discovered since yesterday that Ding Sheng can type on the keyboard for three hours in a row, and the click keeps ringing. But at that time, he was brushing up on copies, and he didn't have time to care about these extraneous things.

Today he deliberately took the time to sneak a glance here, he didn't know if he didn't see it, and although he couldn't understand it at all, he was taken aback.

Aha,The pressure of social employment is too great.,The previous network management maintenance host was cleaned and cleaned with silicone grease or something.,Now you have to be able to write code.。

Or the game is fun.

Thinking like this, the old brother rushed into the boss lair again without hesitation.

Borrowing a USB flash drive as usual to transition,Ding Sheng fixed WiFi drivers、Server interaction protocol、Firewall into the most primitive toolbox of the nano machine,No matter how this nano material changes in the future,Whether it's a mobile phone or a rice cooker,You can surf the Internet perfectly for free。

"Guan Ju!"

"In. ”

"I've upgraded your network, you can go in and run around and see if it works. On the way home, Ding Sheng began to test the Internet speed.

"Limited by the current region, the current network speed is 2.1G/s, although it is not fast enough, but it is much faster than the operator network that I accelerated last night. Guan Ju replied.

By the time I read this sentence, I would have been able to download five or six ultra-high-definition movies.

Sure enough, one person attained the Tao, and the chicken and dog ascended to heaven. Follow the inventors of Marvel, even a system is so tough!

Monday.

Linzhou Middle School, senior three (10) class, Ding Sheng's first homecoming day.

Before Ding Sheng crossed over to Marvel, Jiannan Province held the last mock test before the college entrance examination.

Today's exam results are out, and the whole class is like a big enemy in every class.

In the last mock exam of each year, the test papers will be relatively simple, so that students can find some confidence.

But this time, it is difficult to comprehensively integrate science, especially chemistry.

Faith shattered.

Chemistry class.

From the moment the chemistry teacher entered the classroom, his face was very unsightly, and the whole classroom was silent, and anyone with a discerning eye knew that the teacher had taken voice-activated explosives.

Whoever dares to speak out, bang!

"31 points, a total score of 100 points, your class gave me an average of 31 points. Do you know what this concept is, half of the students in class (1) upstairs are selected to come out, and the other half is monkeys, and the average score is higher than yours!"

Linzhou Middle School is the best high school in Linzhou, and it is also a first-class demonstration ordinary high school in Jiannan Province.

It's understandable to be grumpy.

"There are less than 30 days to go before the college entrance examination, and there are more than a dozen students in our class who don't even know how to remove copper sulfate mixed with sulfuric acid?"

"You guys are the worst class I've ever had. ”

"There is also this topic, phenol acetylation, reduction, catalytic hydrogenation, taking one part of the oxidation into ketones, and the other part for Grignard, coupling, dehydration. Is it hard? Is it hard?"

Many students are confused, and they can't even understand the answer, isn't it difficult?

"The lowest score, Xu Jian, 7 points, and 30 points for multiple choice questions, did you deliberately avoid the correct answer?"

"Top ...... Score"

The chemistry teacher's expression suddenly softened, and his tone became much softer, "Ding Sheng, he just let the teacher worry the most, you all said that this question is difficult, why did people take the 98 exam!"

The eyes of the whole class looked at Ding Sheng, and he was shocked.

I said teacher, don't pull hatred for me, I came all the way back from Marvel and I didn't use it for you.