Today Technology

The area of ​​information technology, especially in regions with technology company hubs such as the South and Southeast, even with the crisis, are not affected as impactfully as other areas. This reflects the growing need for technology resource management, and is a motivation for future professionals who are still in doubt about which area to pursue. If you are interested in one of these job trends in information technology, one of the recommendations is the Network Technologist course. Once completed, the student acts as a network administrator. Let's look at some general duties of a professional in this area. Network Administrator Roles In addition to working autonomously, a recent graduate in the south and southeast begins earning a base salary working in the support area of ​​at least $ 2,000, but this amount depends on the state and the company. As experience is gained the salary goes up, either within the company itself or with proposals from other companies, cli...

Use the End Task feature to clean up unneeded apps and processes running in Task Manager on your Windows 8 computer. However, should proceed with caution. When forcing an app to close in this way, you lose any unsaved data. If you force an important system process to end, elements of your computer may stop working properly. Only close processes you've researched to ensure they're not essential to the running of your computer. Step 1 Press "Ctrl-Shift-Esc" to launch Task Manager. You can also open Task Manager by typing "Task" on the Start screen and then clicking "Task Manager" on the Apps list. Step 2 Click the "More Details" button in the bottom-left corner of Task Manager to display all of the program's tabs. Step 3 Select the application or process you want to close. Apps are listed under the Apps heading. Processes are listed under the Background Processes heading. Step 4 Click the "End Task" ...

SMB or Server Message Block Protocols are used to connect your computer to an external server. Windows 10 ships with support of these protocols but they are disabled in the OOBE. Currently, Windows 10 supports SMBv1, SMBv2, and SMBv3 as well. Different servers depending upon their configuration require a different version of SMB to get connected to a computer. But in case you are using Windows 8.1 or Windows 7, you can check if you have it enabled too. That’s what we are going to do today. How to check SMB version on Windows 10/8/7 First of all, if you have Windows 7, you should not be disabling SMB v2. This is due to the following reasons: Request compounding – allows for sending multiple SMB 2 requests as a single network request Larger reads and writes – better use of faster networks Caching of folder and file properties – clients keep local copies of folders and files Durable handles – allow for connection to transparently reconnect to the server if there is a te...

A network hub is a networking device that connects to one or more equipment. For example, a computer can connect to a server, printer and another computer through a network hub. It is useful in sharing of resources and broadcasting data it receives. It helps connects these devices together without having to connect to each other directly. There are three types of network hubs: Passive Hubs, Active Hubs and Intelligent Hubs. Passive Hubs One of the types of a network hub is the so-called passive hub. It's a pass-through that does not do anything more than just broadcast signals it receives through its input port, then sends it out through the output port. It does not do anything to regenerate or process the signals because it only functions as a connector of different wires in a topology. Active Hubs An active hub works more than just a connector but also regenerates the data bits to ensure the signals are strong. Another name for an active hub is a multiport repeater...

SMB or Server Message Block Protocols are used to connect your computer to an external server. Windows 10 ships with support of these protocols but they are disabled in the OOBE. Currently, Windows 10 supports SMBv1, SMBv2, and SMBv3 as well. Different servers depending upon their configuration require a different version of SMB to get connected to a computer. But in case you are using Windows 8.1 or Windows 7, you can check if you have it enabled too. That’s what we are going to do today. How to check SMB version on Windows 10/8/7 First of all, if you have Windows 7, you should not be disabling SMB v2. This is due to the following reasons: Request compounding – allows for sending multiple SMB 2 requests as a single network request Larger reads and writes – better use of faster networks Caching of folder and file properties – clients keep local copies of folders and files Durable handles – allow for connection to transparently reconnect to the server if there is a te...

Networking is ever present. Every business needs it from day one. Mobile devices and cloud services depend on it, and IoT devices are mission critical. Nearly every house or apartment has a router and devices communicating with the outside world. Given the proliferation of networked devices, people assume that networking is already a solved problem. But when your network starts behaving erratically, you realize networking is still difficult. Why? The flawed promise of public protocols A network with all its component parts purchased from the same company is extraordinarily uncommon. Modern networking enables hardware from different vendors to interoperate — in theory. There are several flaws in that vision. Public protocols are so flexible that people make hardware do things the writers never anticipated. The protocol definitions can have design flaws or errors in protocols and specifications. For instance, vendors implementing DNS make slightly different choices ...

WEP includes a device level authentication mechanism, pictured in Figure 5-4. The station must provide to the AP a proof of ownership of the key they share. Four messages are exchanged. The station makes a request. The AP sends a challenge, i.e., a 128-bit random value. The station sends a response, i.e., the 128-bit random value encrypted with the WEP stream cipher. The AP decrypts the response. If the decrypted response matches the original challenge value, then a positive authenticate response is returned to the station. WEP authentication is one-way, i.e., the AP is not authenticated by the station. After the completion of the authentication phase, subsequent traffic is not authenticated. The protocol is vulnerable to the authentication spoofing attack. An adversary may obtain the key by xor-ing the intercepted challenge value and its response. The key stream may be used by the adversary to create proper responses to new challenges WPA includes as well an authentication prot...