The CompTIA CDIA+ certified professional is someone who provides document imaging solutions. The professionals play an active role in planning, designing, and specifying a document imaging and management system. The CompTIA CDIA+ professional should have a proper understanding of project timeline and security needs such as access and document security. The certified experts will recognize the integration requirements and will give appropriate solutions for the external groups.
The freelance professionals will take of the capacity requirements of the server processing and storage. They will record the quantities of the documents and elaborate on the long-term storage capacity requirements. The freelance CompTIA CDIA+ professional will determine the query requirements. They analyze the input requirements such as resolution, image size, volume, and scanner performance. The certified expert will pick the suitable input devices and interfaces depending on the characteristics of the source documents. The professionals must know how to calculate the amount of image and indexing data that can be stored as per the document lifecycle requirements.
The CompTIA CDIA+ professional should have in-depth knowledge of the needed capacity, response times, and throughput rates. The certified experts will gather all the necessary information for the solution design that includes technological environment, infrastructure, types of operating systems, databases.
Read more : https://www.fieldengineer.com/skills/comptia-cdia-plus
The Computer Tape Librarian is an educated professional who maintains the data found on multiple magnetic tape devices, also called as back-ups. They oversee a classified library of magnetic tapes for data through verification, correction, labeling, and bar-coding. They also create a tape library report through the use of the computer’s hardware and software terminal.
The librarian retrieves files from a server and archives them on tape back-ups. This technician remains the primary expert and first point-of-contact in reference to data disaster management. They perform the disaster recovery process with a dedicated data recovery process, under unexpected circumstances, at global locations.
In the data storage section, the librarian plays a vital role in creating and archiving essential data back-ups for organizations or individuals. Archived files stored on magnetic tapes rarely change which makes this a beneficial storage medium. The tape library is also known as a tape automation system. The Computer Tape system comprises of storage racks for holding the cartridges and a robotic device for shifting the cartridge to the drive
The tape library is at times also called as a tape silo, a tape robot or tape jukebox. This technician manages the tape cartridges for a given slot, will bar-code it for easy reference. They also utilize automated methods for loading tapes through the robotic mechanism. Tape Librarian make use of recommended office machines to take the backups as it is beneficial in case of disaster recovery.
Read more : https://www.fieldengineer.com/skills/computer-tape-librarian
Honestly I warn: take this text with a certain amount of skepticism. I just recently started to get acquainted with the internals of PHP, but I would like to tell you about what is happening behind the scenes bug # 75237 .
As a continuation of the research publications of our company on the internal mechanisms of the world's largest messengers. Today we will look at WhatsApp in its current state. In fact, the insides have not changed much over the past three years, the changes there are rather cosmetic.
In this article we will look in detail how to study the protocol of the messenger, answer the question "Can WhatsApp read our correspondence?" And I will attach all the necessary code in PHP.
Recently, the Avito PHP projects have moved to the version of PHP 7.1. On this occasion, we decided to recall how the transition to PHP 7.0 took place for us and our colleagues from OLX. It's a long time ago, but there are beautiful graphics that you want to show the world.
The first part of the story is based on the article PHP's not dead! PHP7 in practice , written by our colleague from OLX Łukasz Szymański (Lukasz Szymanski): the transition of OLX to PHP 7. In the second part - the Avito transition experience in PHP 7.0 and PHP 7.1: the process, the difficulties, the results with the graphs.
These are the principles of software development, taken from the Robert Martin Clean Code book and adapted for PHP. This manual is not a programming style, but to create a readable, reusable and refactoring-friendly PHP code.
Not each of these principles should be strictly observed, and with even fewer will all agree. These are just recommendations, not more, but they are all codified in the author's many years of collective experience.
Hello, UMumble! Once, I was faced with a choice in the process of developing an authentication system for my project. Namely, what is the best way to store user passwords in the database? Many options came into my head. The most obvious were:
1. Storing the passwords as a plain text in a database.
2. Using regular hashes, such as crc32, md5, and sha1.
3. Using crypt() function.
4. Using the statical salt as type of structure md5(md5($ pass)).
5. Using the unique salt for each user.
The first and second options I had to eliminate for several reasons right away.
It was nice to find the website of this framework quite randomly in the second half of the business hours. New frameworks are rare, and even more rarely you come across mechanisms that are liked at first sight. Therefore, I would like to share my discovery with you.
First, I liked its name Nette right away. It's almost like a Latte. Only Nette as it turned out later is the Latte that has its own built-in template engine. Oh.
Second, at first view it created an impression of something new and advanced (they are almost as thoughts of the PHP team, pluging in the genius language the traits, and forgetting the boring Unicode):
- PHP 5.3
- Built-in HTML template macros
- Context-Aware Escaping technology
- Configurations in the curious NEON format, on basis of which is generated PHP code
- Own implementation of the base class for objects Nette \ Object
- Events and subscription
- New streaming protocol safe :/ / for an atomic access to the file system
Here is a memo for novice exorcist:)
Before I begin, I know what are phpDaemon and System_Daemon. I read some articles about this subject.
So, let's assume that you've already decided that you need the daemon. What should daemon be able to do?
• It should run from the console and unbind from it.
• It should write all information to the logs, nothing output to the console.
• It should be able to create the child processes and monitor them.
• It should perform an assigned task.
• It should correctly complete a job.
There is a widespread view that the ordinary PHP developer does not need to control memory management, but "controlling" and "knowing" are slightly different concepts. I will try to throw light upon some aspects of memory management when working with variables and arrays, and some interesting pitfalls of the internal optimization of PHP. As you can see, the optimization is good, but if you do not know exactly how it is optimized, you might meet the pitfalls, which can make you pretty nervous.
Learning the basics
In PHP a variable consists of two parts: "name" that is stored in hash_table, symbol_table and "value" that is stored in zval container.
This method allows creating multiple variables that are referring to one value, which in some cases allows optimizing the memory usage. How it looks in practice will be written further.
The most common code elements without which it is difficult to imagine a functional script are the following things:
- Creation, assignment and removal of variables (numbers, strings, etc.).
- Creation of arrays and their bypass (as an example will be used the function foreach).
- Passing and return values for functions / methods.