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Showing posts from February, 2021

What are commonly used external links by SEO personnel to optimize - 2021

When it comes to SEO, most people will quickly think of the construction of external links, which play a vital role in website weight and inclusion. So, what are the forms of external links? There are many different forms of external links. I will share with you the different forms of external links commonly used by website SEO personnel for optimization.  Image by fancycrave1 from Pixabay

What are practical tips for web design in 2021

Website design is both simple and difficult. A good web design will greatly enhance the user experience of the website. Web design is simple, but it is not that simple to do. What are the tips for effective web design? 

What is the purpose of the command interpreter? Why is it usually separate from the kernel? Would it be possible for the user to develop a new command interpreter using the system‐call interface provided by the operating system?

 What is the purpose of the command interpreter? Why is it usually separate from the kernel? Would it be possible for the user to develop a new command interpreter using the system‐call interface provided by the operating system? Answer: It reads commands from the user or a file of commands and executes them, usually by turning them into one or more system calls. It is usually not part of the kernel since the command interpreter is subject to changes. A user should be able to develop a new command interpreter using the system‐call interface provided by the operating system. The command interpreter allows a user to create and manage processes and also determine ways by which they communicate (such as through pipes and files). As all of this functionality could be accessed by a user‐level program using the system calls, it should be possible for the user to develop a new command‐line interpreter. Why is the separation of mechanism and policy desirable in an operating system? Answer:...

How do clustered systems differ from multiprocessor systems? What is required for two machines belonging to a cluster to cooperate to provide a highly available service?

 How do clustered systems differ from multiprocessor systems? What is required for two machines belonging to a cluster to cooperate to provide a highly available service? Answer: Clustered systems are typically constructed by combining multiple computers into a single system to perform a computational task distributed across the cluster. Multiprocessor systems on the other hand could be a single physical entity comprising of multiple CPUs. A clustered system is less tightly coupled than a multiprocessor system. Clustered systems communicate using messages, while processors in a multiprocessor system could communicate using shared memory. In order for two machines to provide a highly available service, the state on the two machines should be replicated and should be consistently updated. When one of the machines fails, the other could then take‐over the functionality of the failed machine. Some computer systems do not provide a privileged mode of operation in hardware. Is it possib...

How to quickly detect and judge whether the USB flash drive is infected with the virus under Win7 Ultimate system?

Nowadays, USB disks are used more and more widely , not only can store and copy data, but also install systems, but various problems will also occur during use . USB disk poisoning is a more serious problem, so how to detect Is there a virus in USB disk? Let's take the Win7 flagship system as an example to tell you about it. How to quickly detect and judge whether the USB flash drive is infected Step by Step method:   1. The original folder stored in the USB disk suddenly disappeared. This may be caused by a pseudo-folder U disk virus.   2. Right-click the letter of the USB disk, and commands such as "AutoPlay", "Brower" or "Open" have been added to the menu.   3. All files in the USB disk have become .exe format files and cannot be opened normally .   4. After the USB disk is plugged into the computer, it will take a long time to be recognized by the win7 system computer .   5. When double-clicking the USB disk under win7 system, the USB ...

How to add a game menu to the start menu under Win7 Ultimate?

Recently, users of the win7 flagship system have reported that they usually open the game menu in the start menu to directly enter the game, but sometimes they do not see the game menu in the start menu . What's wrong? Here I will tell you how to solve the problem of adding a game menu to the download start menu of the win7 flagship version . Step by Step method: How to add a game menu to the start menu under Win7 Ultimate? 1. Open the start menu. There is no game function in the start menu of the editor. The editor below will add it to this panel to display, click Run at the bottom right of the start menu to open the running program; 2. Open the running program, and then enter: gpedit.msc in the input box behind the opening of the running program, and then click the OK button below or press Enter to execute gpedit.msc; 3. Execute the gpedit.msc program to open the local group policy editor, as shown in the figure below. In the list under the local computer policy on the left, ...