dmi technical analysis

As an IT person, the selection of technical routes and products is a very important issue. In the past, discussions on this issue on csdn were intense. In the past, we paid more attention to experts' opinions on such issues. They stood high in this field, looked far away, drilled deep, and were able to recognize the nature of the problem early. Therefore, their opinions are definitely worth more attention. On the other hand, it is essential to collect

Key Technical Analysis of malicious fee deduction software: associated with chest Internet-related topics accounted for half of the 315 gala. One of the steps is to make the customer stand up, that is, download a ticket grabbing software, but the operator maliciously deducts dozens of fees. It's difficult to steal dozens of oceans from your wallet. However, what technology does hackers use to perform such a

Linux Kernel Technical Analysis [Date:] Source: Chinese software author: [Font: large, medium, and small] 　 I. kernel IntroductionKernel is the core of an operating system. It manages system processes, memory, device drivers, files, and network systems, and determines system performance and stability.An important feature of linux is its open source code. All kernel source programs can b

part of the business to be asynchronous, reduce system pressure. ]Answer: Hair Weibo itself this thing, need to go through a long chain of transactions, so we can interrupt the chain, it will be asynchronous, after receiving the Weibo push it into the MessageQueue, and then let its asynchronous update processing.Question: [v] under the pressure of high concurrent requests, how can the corresponding speed be guaranteed. ]Answer: A wide range of application caches, cache,memcached, and in-memory

address is related:MAC address and IP of the last 3 paragraphs are always the same, the first 3 of the MAC is always fixed, check the multicast IP address and MAC address is mapped, if the guess is right 数据发送 this point we found, and then think about how to receive it on the chip.Since it is stored in the MAC data, and in the sniffer should be able to see the MAC address, check the next 802.11 protocol, the frame head can see the MAC address, the data will be sniffer to the frame header resolut

data is returned as soon as possible)2. Execution method prompt:USE_NL (use nested loops to join)USE_MERGE (Union using merge join)USE_HASH (Union using hash join)3. Index prompt:INDEX (table index) (use the prompted table index for query)4. Other advanced prompts (such as parallel processing)The prompt function of ORACLE is a strong function and a complicated application, and the prompt is just a suggestion for ORACLE execution, sometimes ORACLE may not follow the prompts for cost consideratio

, under the assumption of the internet security threat model, security control measures at the network boundary can be taken to ensure the security of the entire network. The threat model of Intranet security is more comprehensive and meticulous than the Internet security model. It assumes that any terminal, user, and network in the Intranet network is insecure and untrusted, threats may come from both the Internet and any node on the Intranet. Therefore, in the threat model of Intranet security

the verification code This file function is relatively simple, mainly pop up fake QQ exception box.For details, refer to the "account exception" dialog box, where the color Verification Code image is false: Figure 8 Comparison Between the QQ exception dialog box popped up by the virus and the normal dialog box Vi. Analysis of Technical Points 1. Release the fake System File msimg32.dll to the qq director

and there is a high risk. In addition to vertical scaling, we choose horizontal scaling, that is, adding servers, unlimited performance expansion, of course, there are a lot of content in it. How to back up and synchronize databases is a problem that needs to be considered and solved, in addition, we also need to consider the problem of data duplication between so many machines. In addition, it is possible to cache the database to memcached or use mysql proxy to implement connection pool and ot

of the current virtual processor/Vmx_preemption_timer_value = 0x0000482e,Guest_pending_dbg_exceptions = 0x00006822 ,/Pending debug exceptions/ Host-state region FieldHost_rsp = 0x00006c14 ,/Stack pointer/Host_rip = 0x00006c16 ,/Command pointer//Control Register/Host_cr0 = 0x00006c00,Host_32a = 0x00006c02,Host_cr4 = 0x00006c04,/Segment Selection Register/Host_es_selector = 0x00000c00,Host_cs_selector = 0x00000c02,Host_ss_selector = 0x00000c04,Host_ds_selector = 0x00000c06,Host_fs_selector = 0x00