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The UM interface is a GSM air interface. The communication protocol on the UM interface has 5 tiers, from the bottom up to the physical layer, the MAC (Media Access control) layer, the LLC (Logical Link control) layer, the SNDC (subnetwork dependant convergence) layer and network layer.
The physical layer of the UM interface is the RF interface section, while the physical link layer provides the various logical channels for the air interface. The car
This article usesLinux desktop applicationsTIPS:
1. Questions about installing the flash plug-in of konqueror
Llc: konqueror has poor support for 5.0 flash plug-ins and often cannot load plug-ins.
We recommend that you use the 6.0flash plug-in on this site. konqueror can be easily loaded. During installation, choose to install it in the mozilla plug-in directory, in konqueror's "Settings" menu-" ins" Scan path settings, point the plug-in path to the m
This article turns from Http://www.searchdatabase.com.cn/showcontent_84382.htm support original, respect original, share knowledge! In this series of articles, I will talk about some of the qualities that a database administrator (DBA) should have. In the previous article, I described the technical qualities that a DBA should have. In this article, I will describe the valuable personality traits that make a person a good DBA. Personality traits What are personality traits? It refers to the dist
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One: BOM expansion (Press any parent node to the bottom)
The following write a simple, depending on the specific requirements of a little modification can be.
CREATE TABLE Table (Levelid int,levelname char (2), parent int)
Insert Table Select 1, ' AA ', 0
UNION ALL Select 2, ' BB ', 1
UNION ALL Select 3, ' CC ', 1
UNION ALL Select 4, ' DD ', 2
UNION ALL Select 5, ' EE ', 3
UNION ALL Select 6, ' FF ', 5
Create function BOM (@name char (2))
Returns @tb table (Levelid int,levelname char (2), p
simulationLANE is introduced by the ATM Forum to simulate Eerthnet/802.3 and Token Ring/802.45 on the ATM network. By using LAN simulation, existing LAN applications can communicate on the ATM network, just like on a traditional LAN that uses MAC addresses for addressing, it can provide multicast and broadcast data transmission. LANE runs on the MAC layer, and any layer-3 protocol can run on it. On the contrary, CIPOA can only run the IP protocol.A simulation LANELAN is composed of a group of L
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FDDI protocol ARP') And the starting ring (for example'
Tr protocol ARP') And most of the other such protocols, the Protocol is identified according to 802.2 Logical Link Control (LLC), which is usually at the beginning of FDDI or the starting ring.
When you need to identify the identity of most protocols, such as FDDI or a ring,
TcpdumpCheck only the ID data domains of the
I should be oneDBA?
One of the questions I have asked is whether a person should be engaged in a profession like DBA. This question is not easy to answer because it varies from person to person. Some people have the talent they need to become a good DBA. Others do not think it is easy to master the secret of becoming a DBA. The DBA profession must have certain skills. It also requires unnecessary requirements for other IT occupations. Therefore, to answer this question, I usually describe the r
Tags: dbaDatabase administrator, in English, is DB Administrator, referred to as DBA. This position means a different meaning to different people. A small software development studio is more broadly responsible than a large company with a highly detailed division of labor. A company, whether it is developing its own application software or buying third-party applications, as long as it involves a database (how many applications that do not involve the database?) Database is the soul and the brai
At the end of last year, in a blog, the framework of Ann was used to explain the bow model [1], and the hash methods such as lsh[2] were compared, and the conclusion was drawn that bow was a learned hash function. Earlier last year, the sparse representation models such as llc[3] were briefly introduced, and the relevant papers almost unanimously concluded that these sparse representations had a consistently better performance in image recognition tha
IDC Commentary Network (idcps.com) July 01 reported: According to Registrarstats published real-time data display, as of June 28, 2015, the global domain name registration of the top 15 ranking situation, in line with the previous period. GoDaddy.com, LLC continues to be king, the number of domain names has reached 51,271,735, the monthly net increase of 69,997, only after China million net. Next, take a look at the IDC commentary network to analyze t
The level of DBA is not very strict. According to the database mastery, I simply divided into three levels: primary primary, Intermediate intermediate and advanced senior.
The Junior DBA, also known as Dbbs, is the abbreviation for the English database Baby sitter. Junior DBAs are often part-time, and they are often programmers or other jobs. Junior DBAs tend to write personal resumes well and participate
material is intended to constitute legal, tax, securities, financial or investment advice, nor an opinion regarding the appropriateness of any investors. the general information contained in this material shoshould not be acted upon without obtaining specific legal, tax or investment advice from a licensed professional. indexes are not managed investment products, and, as such cannot be invested in directly. returns represent back-tested performance based on Rules used in the creation of the in
In today's highly competitive market environment, cost control is undoubtedly a very important part for enterprises to improve their competitiveness. As many competitors will provide homogeneous products and services, enterprises must start from controlling internal costs. As an IT department with relatively large internal expenses, they should first bear the brunt of maximizing the potential of the system. DBAs should introduce new methods, new ideas
I. DBA's current adjustments to system performance and stability
Currently, the DBA's efforts to adjust the system performance are roughly as follows:1. Optimizing On the hardware layer. This usually means spending money directly, buying equipment, and resizing.2. Optimize the database, such as adjusting initialization parameters and the physical structure of the database.3. Optimize the SQL of the application, such as analyzing statspack in the database and adjusting top SQL.4. There are only
Many times managers ignore the personality characteristics of DBAs , who only focus on the technical capabilities of DBAs. In fact, each of the responsibilities mentioned above means that the DBA needs to deal with a variety of people who may be vendors, users, developers, or administrators. This means that DBAs must have the following personality traits: self-co
MySQL DBA in my heart, MySQLDBA in my mind
Link: http://wangwei007.blog.51cto.com/68019/1718311
MySQL is a cross-platform open-source relational database management system. Currently, MySQL is widely used in small and medium websites on the Internet. Because of its small size, fast speed, and low total cost of ownership, especially the open source code, many small and medium websites have chosen MySQL as their website database to reduce their total cost of ownership. As MySQL is widely used on t
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******************************************* Blue's growth record series ****************************************************
original works, from the "Blue Blog" blog, Welcome to reprint, please be sure to indicate the source ( Http://blog.csdn.net/huangyanlong ).
Blue Growth--chasing DBAs (1): Rushing on the road and advancing to Shandong
the growth of blue--chasing DBA (2): Installation. Installation. A long-lost memory that caused me to rethin
Hoyt LLC Research | SmarterStats 6.0, OS Command Execution, Directory Traversal, DoS, Coordinated Disclosure
Author: Hoyt LLC Research | http://xss.cx | http://cloudscan.me
Vendor: SmarterTools
Application: SmarterStats 6.0
Bug (s): Directory Traversal, File Upload, OS Execution, XML Injection, SQL Injection, DoS
Patch: The Vendor has released SmarterStats Version 6.2 at URI aspx "> http://www.smartertoo
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