Today Technology

  You can configure a computer so that it does not send announcements to browsers on the domain. If you do so, you hide the computer from the Browser list, which can help reduce network traffic. Editing the Registry 1. Open the registry editor and go to Microsoft Registry 1 HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters 2.From the Edit menu, choose Add Value and type: Hidden Note: This value is case sensitive and must begin with a capital H. 3.In the Data Type field, choose REG_DWORD and choose OK. 4.In the Data field, type 1 to enable hiding and choose OK. 5.Restart your computer. Using the NET CONFIG SRV command This setting can also be changed using the following command: net config server /hidden:yes|no To hide the computer from the Browser List, type net config server /hidden:yes at the command prompt, and then press ENTER. To unhide the computer from the Browser list, type net config server /hidden:no at the command Find more :  lanmanserver...

  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 temporary disco...

Rapid Spanning Tree Protocol (RSTP), a standard inter-switch protocol, ensures a loop-free forwarding network topology at Layer 2. This protocol was defined by the IEEE 802.1w standard and is an extension of the 802.1D Spanning Tree Protocol (STP). RSTP is an improvement over STP as it provides faster convergence after a network topology change or failure. RSTP introduces new port roles, and the original five port states of STP are reduced to three. To build a loop-free topology, switches (bridges) determine the root bridge and compute the port roles. To do this, the bridges use special data frames called Bridge Protocol Data Units (BPDUs) that exchange bridge IDs and root path cost information. BPDUs are exchanged regularly, typically at two second intervals, and enable switches to keep track of network topology changes and to start and stop forwarding on ports as required. Hosts should not send BPDUs to the switch ports and to avoid malfunctioning/malicious hosts from doing so, the s...

  The operating system of your iDevice is always protected against viruses. The closed environment with its hidden file system makes it much harder for hackers to place a virus than a Windows PC or Android smartphone. In addition, you only need to load your apps from the App Store. Apple scrupulously checks every software. New programs are released for use only when everything is OK. Unlike Windows and Android, iOS does not require you to be afraid of viruses and other malware that can damage or disable your system. However, your data is not always necessarily in a safe place on iOS. Most recently, in 2019, a  major security vulnerability was  discovered in iOS that gave hackers access to a host of sensitive data, including contact data and WhatsApp chats. The hacker's favorite: The jailbreak Manipulate the system by  jailbreaking , open hackers the door to your smartphone. The file system is open here and is especially vulnerable to malicious attacks. What a jailbre...

  Once upon a time, the world of developers was split into two halves: One half was composed of Windows developers, who created most of the productivity apps that powered PCs (and, occasionally, servers). The other half comprised Linux and Unix developers, whose work focused on server-side development.Today, however, as the worlds of Windows and Linux move ever closer together, the distinction between Windows and Linux developers is disappearing. Gone are the days when you had to specialize in one ecosystem or the other. One was a set of programming languages and frameworks that were designed primarily for the Windows world, like C# and .NET. Although Windows developers sometimes also worked with languages like Java, which was engineered as a cross-platform language, you knew you were a Windows dev if you found yourself touting the importance of coding in a “pure” object-oriented language like C#. Most Windows developers were also united by Visual Studio, the IDE of choice in the W...

  Redirector This is something you should only measure on your Terminal Server(s). You should monitor the "current commands" in the Redirector object. If the value is higher than 20 during sustained periods of time then you could have a bottleneck. Server Work Queues The Server Work Queues object should be monitored on the File server. You should monitor the "Available WorkItems" counter. Sustained values smaller than ten mean that the File server is running out of work items. When it does, performance really starts to plummet. Make sure this doesn't happen by upping the MinFreeworkItems value. Server In this object there's a counter called "Work Item Shortages". This value represents the number of times no work items were available or couldn't be allocated to service a file request. Obviously if you see any other value than zero, you need to start worrying. Upping the InitWorkItems or MaxWorkItems could help out here. Again, there's so muc...

  The simultaneous growth in availability of big data and in the number of simultaneous users on the Internet places particular pressure on the need to carry out computing tasks “in parallel,” or simultaneously. Parallel and distributed computing occurs across many different topic areas in computer science, including algorithms, computer architecture, networks, operating systems, and software engineering. During the early 21st century there was explosive growth in multiprocessor design and other strategies for complex applications to run faster. Parallel and distributed computing builds on fundamental systems concepts, such as concurrency, mutual exclusion, consistency in state/memory manipulation, message-passing, and shared-memory models. Creating a multiprocessor from a number of single CPUs requires physical links and a mechanism for communication among the processors so that they may operate in parallel. Tightly coupled multiprocessors share memory and hence may communicate by...