The Tech Storror

Outsourcing Computer Outsourcing: The word outsourcing information freelancing basically means free profession. That is, a profession to earn income by working freely. And a little more simply. In other words, different organizations do different types of work through the Internet system. By someone else outside your organization. Outsourcing is called outsourcing. Those who do outsourcing work are called freelancers. Jobs in multimedia, outsourcing sites or online marketplaces are divided into different categories, such as web development, software. Development, networking and information systems, writing and translation, administrative support, design and customer service, sales and marketing business services, etc. It is possible to earn online only if all these tasks are done through the internet system. There are also many other types of work available in the outsourcing world. . Freelancing Freelancing  means working independently without being under a specific person or orga...

 Hybrid network A mixed or hybrid network is essentially a combination of client-server and peer-to-peer networks. Generally, the client-server portion dominates in a hybrid network. However, in addition, there are sparsely coupled peer-to-peer network segments. Advantages of a hybrid network are: (i) Client-server applications can be housed and managed centrally. (ii) Users can control access to their respective computer resources and share their resources. Disadvantages of hybrid network are- (i) Having two types of networks makes it difficult for users to access the network. (ii) Need to remember different passwords for workgroups and servers/domains. (iii) Resources are located on different computers and cannot be managed centrally. Different versions of the same file can be scattered across different computers. (iv) Difficulty backing up files stored on different workstations. Network architecture Designing and implementing an effective network with respect to communication ru...

Connectors The cable connector is the daughter device between the network card and the cable. That is, it connects the network cable and (NIC). Notable among cable connectors are coaxial cable, 10 bit, Ethernet etc. Among them, 10 bit connector is comparatively much faster, reliable and widely used. The 10-pin connector looks a lot like a telephone wire. Some network cards support multiple connector types, thus providing multiple ports. Such cards are called combo cards. Recently, Ethernet technology has gained great popularity in the world of networking, to say that now Ethernet is a dominating (Dominating) technology. For that reason, if the network card of the computer is of combo type, then it is possible to upgrade it to use Ethernet technology. The following three types of connectors are commonly used in networks. These are-- a) RJ-45: It is used to connect UTP cable to network interface card or NIC. This connector has a total of 8 contact pins. These 8 pins are used in different...

Things to do to prevent cyber crime It is always better to take determinative measures to prevent a crime than to take action against it after it has occurred. This also applies to online users. To avoid becoming a victim of cybercrime, one can easily stay free from cybercrime if some awareness and some preventive measures are always followed. Some of such preventive measures are described below: (i) One should refrain from presenting one's confidential information to others. (ii) Never send any photograph of yourself or someone you know online to a stranger or a chat friend. Because that kind of photography can be used for any evil purpose. (iii) Always use new and upgraded anti-virus to prevent virus attacks. (iv) Important data should always be backed up so that the data is not lost forever due to virus attack. (v) Never provide credit card number to any insecure website to stay financially risk free. (vi) Children should always monitor their browsing so that they do not access ...

Basic concepts of operating system The main purpose of the operating system is to-- • Creation of working environment: The operating system that creates a better working environment, the better and improved the operating system. • Coordinator: It coordinates between hardware and software. It acts as a coordinator between user tasks and all devices. • Automatic management: When a problem arises, it automatically understands what to do. If the appropriate solution is not provided, the operating system may automatically shut down the computer by itself. • Control of computer operations: The objective of the operating system is to control the speed of input/output operations by programs. • Memory management: helps the computer to work faster in stages by storing different files so that they can be found easily. this • Working based on priority: All the tasks that are directed to the computer are carried out based on priority. • Input/Output Management (I/O Management): It is the task o...

Mobile Communication A mobile phone is a small electronic device for receiving and transmitting sound or data that has input and output units A display unit is also used to make a cellular phone or mobile phone. A mobile or cell phone receives the signal from the tower. Mobile phones within a few miles make connections through these towers. Generations of Mobile Telephone: Mobile phone technology has been divided into 4 generations from its inception to the present period. 1. First generation: The journey of this generation started in 1983. The first generation was mainly analogue mobile phones used the first generation of mobile phones was built on analogue systems. There are three notable systems in the first generation -- 1. Advanced Mobile Phone System (AMPS) 2. Nordic Mobile Telephone (NMT) 3. Total Access Communication System (TACS) Features: 1. Using analogue systems as radio signals. 2. Use of mobile radio telephones as a mobile telephony standard. 3. Use of semiconductor tech...

Concept of data communication system: Data transfer between a central computer and remote terminals was first introduced in the 1960s. These terminals lacked storage and processing capabilities. Such a method is known as teleprocessing. The terminal of this method is called the silent or dumb terminal. Later, processing and data storage and data storage capabilities were created in these terminals, known as self-contained systems. Data is a precious resource in today's era. Information or data plays an important role in the improvement of an organization, making realistic decisions for the organization, connecting the internal environment of the organization with the rapidly changing world outside, etc. The special method by which data is exchanged from one computer to another or more computers is called the data communication method. The advantage of this method is that data can be transmitted quickly and accurately. The main five components or parts of data communication are— 1. ...

Data Analysis Data analysis is a process of data inspection or observation, refinement, transformation and modelling, with the aim of drawing attention to necessary or useful information, proposing analytical conclusions and supporting decision making. There are many components and methods of data analysis. It may include subjects such as technology, business, science and sociology etc. with diverse names. Data mining is a specialized data analysis technique, which focuses on discovering specific knowledge from databases. Business intelligence relies on the support of data analysis, which mainly provides insight into business information. Some researchers have divided data analysis into three categories for statistical applications. They are- (i) Descriptive Statistics: In descriptive statistics, the amount of collected data is analyzed in various ways, such as Central Tendency (Measure, Median, Proportion), Deviation, Synthesis, Regression, various types of graphs and charts etc. (ii)...

Data Sorting Sorting data: Sorting is when working with data arranged according to their ascending or descending data of the same category may need to be sorted. Data can be sorted in two ways according to their value. There are various algorithms or methods of sorting, viz (i) Insertion Sort (ii) Replacement Sort (iii) Quick Sort (iv) Bubble Sort (V) Sell Sort (vi) Selection Sort (vi) Binary Tree Sort  (viii) Tournament Sort (ix) Heap Sort (x) Address Count Sort (xi) Merge Sort (xii) Radix Sort etc. Bubble Sort: The most commonly used sorting method is the bubble sort method. Usually this method is used when the number of data is large. Sorting takes less time if the data is well organized. The bubble sort method involves pairwise comparisons. The algorithm of bubble sort is as follows: Bubble Sort Algorithm: Step-1: Sorting is done by comparing the first and second numbers of the array. Step-2: Then the 2nd and 3rd numbers are compared and arranged. Step-3: In this way the proces...

Data Searching Searching: Searching is the process of finding specific data from an array or file. Let's say an array contains the data 5, 3, 7. n is a data, which must be determined whether it is in this array or if it is in any position. Searching is the method by which this answer is derived. There are different methods of searching. The most commonly used methods are: (A) Linear Search  (B) Binary Search (A) Linear Searching or Sequential Sorting: In order to find specific data in the sequential searching method, starting the comparison from the first data of the array and comparing to the last data if necessary, the value of the specific data is found in the array or not. This method takes more searching time. Each data requires comparison. Searching takes less time when the specified data is located at the beginning of the array. The main advantage of this method is that there is no need to sort the primary data before searching. Sequential searching or linear searching algor...

Data validation  Data Validation By inputting the data into the computer, the processing is completed and meaningful information is obtained. Results are generated depending on the input data. Inputting wrong data will also result in wrong. Effectively extract data from source documents to ensure authenticity and validity of data. Then the data is properly inputted through data coding and appropriate equipment. But there may be some mistakes, which are not understood beforehand. However, any errors that occur more frequently need to be identified. Data authenticity and validity are generally checked in two ways, namely-- (i) Transaction Validation  ii) Data Validation  Transaction Validation: The validation that is checked on data input is called transaction validation. Usually, such validation is done through software. Generally, three types of mistakes can occur in this case, namely-- (i) Inputting data (ii) Data by unspecified persons (iii) Instructing the system to do...

Computer System Utilities  Providing backup, data recovery, antivirus utilities etc. to the operating system user. These utilities are essential to get things working properly in case of common problems. All these utilities are called system tools in Windows operating system. The most commonly used utilities are: (i) Disk Scan (ii) Create restore point (iii) Disc defragment (i) Disk Scan: Long-term computer use, viruses and unexpected power cuts can cause bad sectors on the hard disk. If in this condition, the hard disk of the computer gets destroyed slowly. Hard disk bad sectors can be recovered through disk scan and the bad sector areas can be marked. As a result no more memory space is wasted. Advantages: Bad sector of computer hard disk can be recovered and bad sector area can be marked. 166 (ii) Create restore point : Many times it is seen that after deleting a file we need the file again or we mistakenly delete many files. Such deleted files can be recovered if a restore poin...

Decision support and executive support systems Decision Support System-DSS: Decision support is a comprehensive computer-based information system, which helps management in decision-making. Such systems collect various business data and generate reports, which help in future decision making. Data is collected in transaction processing systems, reports are prepared using data stored in management information systems, and decision support systems analyze the status of reports to assist in decision making. DSS can be used by middle managers as well as top managers. DSS helps managers to make semi-structured, unique or rapidly changing decisions. It is used on a daily basis by the shipping manager to execute a variety of contracts. Features of Decision Support System: (i) Decision support systems use sophisticated analysis and modeling tools. (ii) DSS helps the manager in taking semi-structured, unique or rapidly changing decisions. (iii) DSS is used by middle and top level managers. (v) ...

 Internet The Internet is the dominant medium in the computer networking process of today's world. Thanks to the Internet, all the computer users of the entire world have been able to be bound in the same circle. As a result, mutual cooperation, solidarity, etc. have increased unexpectedly. So some call the Internet a network of networks. However, it can be said that the Internet is the dominant force in all computer networking in the current world. The “Internet” is dominating the field by bringing the vast empire of the computer world into its hands. Thanks to the Internet, the communication system has been greatly improved. People can get news from different parts of the world in a short time and at a low cost. You can send the necessary information to the nearest person in any part of the world in a moment. Milestones of internet speed. It plays an immense role in today's communication system and information exchange. NET family members will find solutions to most of their ...

Hotspot, Wi-Fi, Wi-Max, Bluetooth Hotspot: Hotspot is a type of wireless network that provides internet connection to mobile computers and devices such as smartphones, PDAs, tablets, netbooks, notebooks or laptops. Currently, the three popular hotspot technologies are – 1. Wi-Fi 2. Wi-Max 3. Bluetooth Wi-Fi: Wi-Fi or wireless fidelity is a popular wireless technology that uses radio waves to connect any electronic device to a high-speed Internet connection or computer network to exchange data. It is technically known as IEEE 802.11b. Wi-Fi technology is relatively faster (11 Mbps) and less expensive than standard Ethernet and other common wired LAN technologies. Thus, the Wi-Fi wireless LAN connects laptop PCs, PDAs, smart phones, tabs and other devices with Wi-Fi modems to the rapidly growing business, public and the planet to easily connect to the Internet and other networks. A faster version (802.11g) with a speed of 54 Mbps promises widespread use of this technology. Features of Wi...

Types of mobile or cellular sets  Mobile phone service providers are offering various services to the customers. Due to different uses of mobile phones, nowadays people are using different types of mobile phone sets. Based on the structural aspects and multipurpose use of the mobile phone, mobile or cellular phone sets can be divided into several categories. namely -- (i) Basic Mobile Phones (ii) Camera mobile phones (iii) Music or MP-3/MP-4 mobile phones (iv) Video mobile phones (v) Smart mobile phone (vi) PDA or Note mobile phone Types of mobile phone technology: The current mobile phone technology can be mainly divided into two categories, namely--  (i) GSM = Global System for Mobile Communication, technology and (ii) CDMA (CDMA Code Division Multiple Access) technology.   GSM  It was first named Group Special Mobile (GSM) in 1982, then the definition of the name was changed to Global System for Mobile Communication (GSM). The third generation version of GSM techn...