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Mar 23, 2026

What is the subnet mask

Subnet mask is also called network mask, address mask and subnet mask. It is used to indicate which bits of an IP address identify the subnet where the host is located and which bits identify the bit mask of the host. The subnet mask cannot exist alone. It must be used in combination with the IP address. The subnet mask has only one function, which is to divide an IP address into two parts: network address and host address. The subnet mask is the basic knowledge that everyone who uses the Internet must master. Only by mastering it can you truly understand the TCP/IP protocol settings. Let's explain what subnet mask is in simple terms.

Mar 22, 2026

What are vr virtual glasses? How is the effect?

3D stereo glasses is a penetrating LCD lens, through the circuit to the LCD glasses on, off the control, on can control the glasses lens all black, in order to cover a glance image; off can control the glasses lens for transparent, so that the other glance to see another glance should see the image.

Mar 21, 2026

What is the reason for the computer card? How to deal with the computer card?

What is the reason for the computer card? How to deal with the computer card? Here are the main reasons why computers are getting more and more stuck

Mar 20, 2026

Internet era! How to prevent personal information leakage

With the advent of the information explosion era, as long as an inadvertent action may leak information.

Mar 19, 2026

Do you know what 3D Mapping is?

3D Mapping is the core technology of outdoor architectural projection, which can project onto the surface of objects in any medium and turn the surface of the objects into animation to achieve a perfect integration of objects and animation, thus creating a strong sense of visual impact.

Mar 18, 2026

Mobile phone battery is not durable? 14 tips to extend battery life

If the user wants to extend the effective service life of the battery, in addition to the quality of the charger, the correct charging method is also essential, because the poor quality charger or the wrong charging method will affect the service life and cycle life of the battery. Here are the tips on extending the life of the mobile phone charging battery that the author has compiled:

Mar 17, 2026

How does the projector work?

The working principle of the projector is based on the fusion of optical and electronic technologies.

Mar 16, 2026

What is IMEI code

IMEI code, namely the serial number of the mobile phone. It is the abbreviation of International Mobile Equipment Identity. Like the identity card of a mobile phone, it is used to help identify the identity of a mobile phone. Each mobile phone has only one serial number, which is not the same. We usually match the serial number displayed after pressing the "* # 06 #" key on the mobile phone with the barcode on the mobile phone box and the serial number in the back of the mobile phone after removing the electric board. If the three are the same, it is more likely to be genuine goods (not excluding second-hand goods).

Mar 15, 2026

What are the benefits of using SSD in laptops

Want to know what the benefits of using SSD in laptops are? First, we need to understand what a SSD is. The following content will give you a detailed explanation of what the SSD is.

Mar 14, 2026

What is Qualcomm three carrier aggregation

The mobile network has become a part of our daily life. Mobile phones can't leave the mobile network without sending WeChat messages to watch live games. However, many users will find that some mobile phones need to cache and play games when watching live broadcasts, but some mobile phones do not. Even if you use the same operator's network, the transmission speed of the mobile phone network will vary greatly at the same time and place. What? This may be because your phone does not support carrier aggregation. What is carrier aggregation? Next, we will introduce the carrier aggregation technology and the application of high pass carrier aggregation technology in detail.