"Write the operating system yourself" read Sense http://blog.csdn.net/zgh1988/article/details/7059936
Comprehensive analysis of the first chapter of "self-writing Operating System" http://blog.csdn.net/zgh1988/article/details/7060032
Comprehensive Analysis of the "self-writing Operating System" Chapter 2 http://blog.csdn.net/zgh1988/article/details/7062065
Comprehensive Analysis of the "hands-on writing Operating System" Chapter 3 1 http://blog.csdn.net/zgh1988/article/details/7098981
Take the
Protection Mode
(Protected mode, or sometimes pmode) is a 80286 series and later x86 compatible CPU
Operation Mode. The protection mode has some new features and is designed to enhance the stability of multiple workers and systems, such as memory protection, paging systems, and virtual memory supported by hardware. Most of today's x86
Operating systems are all r
Currently, many organizations have installed programmable switches, and the main component of the programmable switches is the integrated circuit (IC ). The IC anti-interference capability is relatively low. Even the lightning electromagnetic pulse (LEMP) induced by the line can penetrate the IC element. Therefore, programmable switches are prone to lightning strikes. Most of the components that are damaged are trunk boards, user boards, billing cards, and power supplies. Due to the high value o
Through the analysis and research of Private Network classified information systems, this paper comprehensively considers network operation security, information security and confidentiality management. The security protection system is designed and implemented in accordance with classified protection to ensure the security, integrity, authenticity and anti-Repudiation of data transmitted in the classified
As network security problems gradually enter people's eyes, network viruses, especially Web Trojans, are now crossing the street, showing how much damage Web Trojans have caused to netizens. The harm of Web Trojans is simply a matter of self-danger for Internet users. During Normal Internet use, they are all taken extra care and are afraid of being attacked by Web Trojans. In fact, Web Trojans are not as terrible as you think. You only need to select a suitable anti-Trojan tool to block Web Troj
We know that the WEB server can be divided into three layers, and any layer of the server may cause security threats to the entire website. Therefore, when deploying a WEB server security policy, enterprise security management personnel should comprehensively build an Enterprise Web security protection network. To effectively implement web security protection.
Build Enterprise Web Security
Data is the core of today's enterprises and can improve the flexibility and decision-making level of enterprises. However, the explosive growth of data (including structured and unstructured data) increases the difficulty of data protection and storage.
Today, enterprises need to process large and large files every day. The harsh reality puts a huge pressure on the IT resources of enterprises. For example, it takes 24 hours to back up a TB data set th
I. Protection and Restoration of software systemsFor a long time, there has been a large flow of staff in school data centers, Internet cafes, and other places where there are many machines, and the work of system administrators is very cumbersome. We often need to reinstall the system and kill viruses. How to protect and restore the existing operating systems and software on the hard disk has become a topic.In principle, the
Word document protection can be said to be from word 971 until word XP is the same old, there is no significant change, some users even disdain it. However, Word 2003 's "Protect Document" feature has been significantly improved, with the exception of previous versions of revision protection, annotation protection, and form p
Backing up your data is critical, but if you don't know how to recover the data, those backups are useless to you. Here is a list of options for data recovery using the Microsoft System Center Data Protection Manager (DPM).
Data Protection Manager works by making shadow copies of your data. Data Protection Manager is set by default to data
Self-protection backgroundThe first thing to know about the Eureka Registry is that eureka each node is equal, without the concept of a role in ZK, even if n-1 nodes are hung up, it will not affect the normal operation of the other nodes.By default, if Eureka server does not receive a heartbeat for a microservices instance within a certain amount of time (by default, 90 seconds), Eureka server will remove the instance. However, when the network partit
Today's anti-virus software is a variety of, however, can be trusted by users or only a few. At present, Tencent Computer Butler according to the current network security situation, tailored to the user four sets of system protection system, which users can open real-time protection. Then, the following and small set together to see Tencent computer Butler Real-time Pro
Gateway Protection Solutions (firewalls, IDS/IPS, and Web security gateways), security cannot be relaxed in terms of Intranet protection, especially the terminal security. The endpoint security mentioned here is a big category. In addition to anti-virus software, IT also needs to provide protection for data information in users' personal computers, and for the I
1. Three operating modes of 386 processorsGenerally, 80x86 (80386 and later generations of CPUs) can run in three modes: real mode, protection mode, and virtual 8086 mode. Real mode is the operating environment of the ancient MS-DOS. Win95 and later operating systems only use two modes: protection mode and virtual 8086 mode. The security mode is a diagnostic mode for windows. In this mode, the system only l
The common protection method of websiteFor the hacker threat, the network Security administrator takes various means to enhance the security of the server and ensure the normal operation of the WWW service. Like email on the Internet, FTP and other servers, you can use the following methods to protect the WWW server:Security ConfigurationTurning off unnecessary services, preferably by providing only the WWW service, installing the latest patches for t
In-depth analysis of PHP Remote DoS Vulnerabilities #8232; and Protection SolutionsExecution Abstract: on June 14, May 14, a Remote DoS vulnerability in php was detected in China, with the official code 69364. This vulnerability is used to construct a poc initiation link, which can easily cause 100% cpu usage on the target host, involving multiple PHP versions. The aligreennet threat response center immediately launched an emergency response mechanis
Null Pointer Vulnerability Protection Technology-improvementIn this article, we introduced the concept of NULL pointer and Null Pointer Vulnerability. In this advanced article, we will introduce the use of NULL pointer and corresponding protection mechanisms.Author: Sun jianpoDirectory 1 improvement: Use of null pointers1.1 Introduction to ZwAllocateVirtualMemory1.2 ZwAllocateVirtualMemory function knowledg
its own task_struct on a waiting queue, such as wait_queue_t. and set its own state to interrputable or uninterrutable (allowing the signal to wake up or not), and finally call schedule. In this case, the execution of schedule will remove the current Task_struct from the running queue where it resides.The schedule is not to remove the current Task_struct from the running queue where it is scheduled to be re-dispatched or all steals.The re-Dispatch is divided into two steps:1. Set the current ru
The installation of the operating system is a very cumbersome thing, the normal way to install usually requires nearly one hours. At present, the personal operating system is also the majority of Windows, a little computer experience friends have found that the Windows system after the use of a period of time will be slow, and there is instability.
To solve this problem, many manufacturers have introduced related products, such as the famous backup and restore software Ghost, hardware restore c
Data protection technology DRM has become one of the fastest developing information security technologies in the 2007. Recently, companies led by Microsoft have issued new standards for relevant technologies. On the contrary, in the United States hackers Congress, has been the corresponding crack standards, an attack on the user's impact can not be overlooked.
The birth of new technology
The birth of data protec
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