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• Compare the 3 types of private cloud

  The different types of private cloud offer varying levels of control, customization and convenience. These factors affect the benefits, challenges and use cases for each model. Continue Reading

• How to deploy a LAMP stack

  Examine the components and deployment options of a LAMP stack, which provides web hosting, database and scripting platforms that are found in many data centers. Continue Reading

• What is a quality gate?

  A quality gate is a milestone in an IT project that requires that predefined criteria be met before the project can proceed to the next phase. Continue Reading

• Examine a captured packet using Wireshark

  Wireshark is a useful tool for capturing network traffic data. Network pros can make the most of the tool by analyzing captured packets to see what that data means for troubleshooting. Continue Reading

• How to calculate a subnet mask from hosts and subnets

  IP addressing and subnetting are important and basic elements of networks. Learn how to calculate a subnet mask based on the required number of subnets and hosts. Continue Reading

• Definitions to Get Started

  • What is an API (application programming interface)?
  • What is a SAN? Ultimate storage area network guide
  • What is a data retention policy?
  • What is multi-access edge computing? Benefits and use cases

  • What is 5G?
  • What is 6G? Overview of 6G networks & technology
  • phase-locked loop (PLL)
  • What is millimeter wave (mmWave)?

  View All Definitions

• What is a service mesh?

  A service mesh is a dedicated infrastructure layer that controls service-to-service communication within a distributed application.Continue Reading

• How to use Linux package managers

  There are many different package managers for Linux distributions. Linux admins should know what to expect from these distributions and how to tackle software maintenance.Continue Reading

• How to put CI, CT and CD together in a DevOps pipeline

  DevOps pipelines aren't just about CI/CD. Learn why continuous testing is a crucial piece of the puzzle and how it ultimately results in cleaner code with fewer errors.Continue Reading

• Learn to use Windows registry editor command-line options

  This tutorial explains how to use the regedit tool on the command line and make changes to the Windows registry for advanced administrative jobs.Continue Reading

• What is a partition in computers?

  A partition is a logical division of a hard disk drive (HDD) that's treated as a separate unit by operating systems (OSes) and file systems.Continue Reading

• What is dynamic application security testing (DAST)?

  Dynamic application security testing (DAST) is the process of analyzing a web application in runtime to identify security vulnerabilities or weaknesses.Continue Reading

• Wi-Fi 6 vs. Wi-Fi 5: What's the difference?

  Wi-Fi 6 was introduced as the next-generation Wi-Fi standard after Wi-Fi 5. While similar in certain aspects, Wi-Fi 5 and Wi-Fi 6 differ in terms of features and capabilities.Continue Reading

• What is a kernel?

  A kernel is the essential foundation of a computer's operating system (OS). It's the core that provides basic services for all other parts of the OS.Continue Reading

• What is API testing? Everything you need to know

  API testing is a type of software testing that analyzes an application programming interface (API) to verify that it fulfills its expected functionality, security, performance and reliability.Continue Reading

• What is an embedded MultiMediaCard (eMMC)?

  An embedded MultiMediaCard (eMMC) is a small storage device made up of NAND flash memory and a storage controller.Continue Reading

• What is continuous integration (CI)?

  Continuous integration (CI) is a software development practice in which frequent and incremental changes are routinely added (integrated) to the complete codebase immediately after the changes and additions are tested and validated.Continue Reading

• What is an NVDIMM (non-volatile dual in-line memory module)?

  An NVDIMM (non-volatile dual in-line memory module) is hybrid computer memory that retains data during a service outage.Continue Reading

• What is green computing?

  Green computing, also known as sustainable computing, is the use of computers and other computing devices and equipment in energy-efficient and eco-friendly ways.Continue Reading

• What is AWS PrivateLink?

  AWS PrivateLink is a networking feature from Amazon Web Services (AWS) that eases and secures connectivity between AWS Virtual Private Clouds (VPCs) and other services while protecting data from exposure to the internet.Continue Reading

• What is VMware Aria Suite (formerly vRealize Suite)?

  VMware Aria Suite, formerly called vRealize Suite, is a software platform designed to help IT administrators build and manage heterogeneous, hybrid cloud environments.Continue Reading

• What is VMware Certified Professional (VCP)?

  VMware Certified Professional (VCP) is a certification level designed to demonstrate technical competency with VMware vSphere and related technologies.Continue Reading

• Deploy Azure landing zones using Terraform

  Azure landing zones are well-managed environments that provide a way to run workloads. Deploying them using Terraform lets users build a solid foundation.Continue Reading

• 9 types of networks and their use cases

  Networks differ based on size, connectivity, coverage and design. This guide explores the most common types of networks, their benefits and use cases.Continue Reading

• What is VMware vSphere?

  VMware vSphere is a virtualization platform that includes a suite of products for deploying and managing virtual environments.Continue Reading

• What is high availability (HA)? Definition and guide

  High availability (HA) is the ability of a system to operate continuously for a designated period of time even if components within the system fail.Continue Reading

• Java tic-tac-toe game coding tutorial

  What's the best way to learn how to program? Code up some of your favorite childhood games. Here, we'll show you how to code a tic-tac-toe game in Java.Continue Reading

• What is network scanning? How to, types and best practices

  Network scanning is a procedure for identifying active devices on a network by employing a feature or features in the network protocol to signal to devices and await a response.Continue Reading

• What is VMware Cloud Director (VCD)?

  VMware Cloud Director (VCD), formerly vCloud Director (vCD), is a cloud services delivery platform that helps cloud service providers offer secure cloud resources to their enterprise customers.Continue Reading

• What are availability zones?

  Availability zones (AZs) are isolated or separated data centers located within specific regions in which public cloud services originate and operate.Continue Reading

• What is no-code? Everything you need to know

  No-code is a software development approach that requires few, if any, programming skills to quickly build an application, website or module that links into an existing system.Continue Reading

• An introduction to SFP ports on a Gigabit switch

  SFP ports enable Gigabit switches to connect to a variety of fiber and Ethernet cables and extend switching functionality throughout the network.Continue Reading

• What is VMware vCenter Server?

  VMware vCenter Server is a centralized management platform for configuring, controlling and monitoring VMware vSphere virtual environments.Continue Reading

• What is REpresentational State Transfer (REST)

  REST (REpresentational State Transfer) is an architectural style for developing web services and systems that can easily communicate with each other.Continue Reading

• What is a software-defined data center (SDDC)?

  A software-defined data center (SDDC) is a server management concept in which all infrastructure elements -- networking, storage and compute -- are virtualized and delivered as a service.Continue Reading

• What is an Amazon EC2 Instance? Types, features and pricing

  An Amazon EC2 instance is a virtual server in Amazon's Elastic Compute Cloud (EC2) scalable compute platform for running applications on the Amazon Web Services (AWS) cloud.Continue Reading

• What is NVMe over Fibre Channel (NVMe over FC)? Definition and Guide

  Non-volatile memory express over Fibre Channel (NVMe over FC) is a technology specification designed to enable NVMe-based message commands to transfer data and status information between a host computer and a target storage subsystem over a Fibre ...Continue Reading

• Dive into Terraform basics with this tutorial

  Terraform can save you time and headaches when deploying servers with cloud providers. Get up to speed on Terraform basics in this tutorial.Continue Reading

• Compare cloud-native vs. cloud-based vs. cloud-enabled apps

  While it's tough to make a clear distinction between cloud-native, cloud-based and cloud-enabled apps, they differ in terms of development practices, performance and other factors.Continue Reading

• What is an API endpoint?

  An API endpoint is a point at which an application programming interface -- the code that enables two software programs to communicate with each other -- connects with the software program.Continue Reading

• Activate Windows Server 2019 with KMS or the command line

  Running the Software License Manager from the command line or using Key Management Services for automatic activation can sidestep one hurdle to get going with Windows Server 2019.Continue Reading

• What is U.2 SSD (formerly SFF-8639)?

  A U.2 SSD is a high-performance data storage device designed to support the Peripheral Component Interconnect Express (PCIe) interface using a small form factor (SFF) connector that is also compatible with standard SAS and SATA-based spinning disks ...Continue Reading

• What is bit rot?

  Bit rot is the slow deterioration in the performance and integrity of data stored on storage media.Continue Reading

• What is parity in computing?

  In computers, parity (from the Latin paritas, meaning "equal or equivalent") is a technique that checks whether data has been lost or written over when it is moved from one place in storage to another or when it is transmitted between computers.Continue Reading

• What is Ceph?

  Ceph is an open source software solution that provides a unified system for enterprise-level object, block- and file-based storage.Continue Reading

• How to launch an EC2 instance using Terraform

  With Terraform, developers can lean on familiar coding practices to provision the underlying resources for their applications. Follow these steps to use the IaC tool to create an Amazon EC2 instance.Continue Reading

• Boost Exchange Online automation with Azure Functions

  Admins can use the event-driven functionality in Microsoft's serverless offering and build event-driven workflows for a more efficient management approach.Continue Reading

• Understand the k-means clustering algorithm with examples

  The k-means clustering algorithm groups similar objects or data points into clusters. This approach is popular for multivariate numeric data.Continue Reading

• MAC address vs. IP address: What's the difference?

  A MAC address and an IP address each identify network devices, but they do the jobs at different levels. Explore the differences between the two and learn why both are necessary.Continue Reading

• What is wavelength?

  Wavelength is the distance between identical points, or adjacent crests, in the adjacent cycles of a waveform signal propagated in space or along a wire.Continue Reading

• What is an uninterruptible power supply (UPS)?

  An uninterruptible power supply (UPS) is a device that allows a computer to keep running for at least a short time when incoming power is interrupted.Continue Reading

• What is SSD RAID (solid-state drive RAID)?

  SSD RAID (solid-state drive RAID) is a methodology commonly used to protect data by distributing redundant data blocks across multiple SSDs.Continue Reading

• What is a CompactFlash card (CF card)?

  A CompactFlash card (CF card) is a memory card format developed by SanDisk in 1994 that uses flash memory technology to store data on a very small portable device.Continue Reading

• What is RPM Package Manager?

  RPM Package Manager (RPM), originally called the Red Hat Package Manager, is an open source program for installing, uninstalling and managing software packages in Linux.Continue Reading

• non-volatile memory (NVM)

  Non-volatile memory (NVM) is a type of computer storage medium that retains data even in the absence of a power supply.Continue Reading

• mirror site

  A mirror site is a website or set of files on a computer server that has been copied to another computer server so that the site or files are available from more than one place.Continue Reading

• JEDEC

  JEDEC is a global industry group that develops open standards for microelectronics.Continue Reading

• supervisor call (SVC)

  In computers, especially IBM mainframes, a supervisor call (SVC) instruction is a processor instruction that directs the processor to pass control of the computer to the operating system's supervisor program.Continue Reading

• white box server

  A white box server is a data center computer that is not manufactured by a well-known name-brand vendor.Continue Reading

• How network data models work with automation

  Network data models can help network engineers with their automation strategies, thanks to the essential data they store about physical components, security and QoS.Continue Reading

• What is an automatic transfer switch?

  An automatic transfer switch (ATS) is a device that automatically transfers a power supply from its primary source to a backup source when it senses a failure or outage in the primary source.Continue Reading

• SSD caching

  SSD caching, also known as 'flash caching' or 'flash memory caching,' is the temporary storage of frequently-accessed data on NAND flash memory chips in a solid-state drive (SSD) to improve the drive's input/output (I/O) performance and allow data ...Continue Reading

• Deploy a Redis Cluster on Kubernetes

  Redis is a powerful platform with many use cases. Follow this tutorial to run Redis on Kubernetes to simplify deployments and increase reliability and performance.Continue Reading

• Linux Secure Boot

  Linux Secure Boot is a Hyper-V feature that Microsoft introduced in Windows 10 and Windows Server 2016. The feature allows specific Linux distributions to boot properly when running in Hyper-V generation 2 virtual machines.Continue Reading

• test-driven development (TDD)

  Test-driven development (TDD), also called test-driven design, is a software programming method that interlaces unit testing, programming and refactoring on source code.Continue Reading

• SCSI (Small Computer System Interface)

  SCSI (Small Computer System Interface) is an electronic interface that enables PCs and servers to communicate with peripheral hardware, such as storage devices, printers and scanners, faster and more flexibly than previous parallel data transfer ...Continue Reading

• Microsoft Windows Server LTSC (Long-Term Servicing Channel)

  Microsoft Windows Server LTSC (Long-Term Servicing Channel) is one of the servicing options available for users of the Windows Server operating system (OS).Continue Reading

• CASB vs. SASE: What's the difference?

  CASB and SASE enhance network and SaaS application security. CASB acts as a security layer for cloud services, while SASE integrates networking and security into one framework.Continue Reading

• SSD TRIM

  SSD TRIM is a command for the Advanced Technology Attachment (ATA) interface that enables an operating system (OS) to inform a NAND flash solid-state drive (SSD) which data blocks it can erase because they are no longer in use.Continue Reading

• Understand the uses of blockchain in data centers

  Blockchain is most famous for its cryptocurrency applications, but data centers can employ it for a variety of business-related reasons -- including increased security.Continue Reading

• scalability

  In information technology, scalability (frequently spelled 'scaleability') has two uses: for a computer application to function with change in size and volume, and to take advantage of a rescale.Continue Reading

• RRAM or ReRAM (resistive random access memory)

  RRAM, also known as resistive random access memory or ReRAM, is a form of non-volatile storage that operates by changing the resistance of a specially formulated solid dielectric material.Continue Reading

• A guide on how to learn network automation

  Networks are always evolving, and network automation is the next step forward. From soft skills to AI, these skills are essential to understanding network automation.Continue Reading

• 7 steps to set up a home network

  This guide teaches networking newbies how to set up a home network, from understanding hardware components to managing network performance and security.Continue Reading

• hardware clustering

  Hardware clustering, sometimes called OS clustering, is a hardware-based method of turning multiple servers into a cluster -- a group of servers that acts like a single system.Continue Reading

• field-replaceable unit (FRU)

  In electronic hardware, particularly computer systems, a field-replaceable unit (FRU) is a circuit board or part that can be easily removed and replaced by the user or technician without having to send the product or system to a repair facility.Continue Reading

• GitHub

  GitHub is a web-based version control and collaboration platform for software developers.Continue Reading

• twisted pair

  Twisted pair is the ordinary copper wire that connects home and business computers to a telephone company.Continue Reading

• boot loader (boot manager)

  A boot loader (boot manager) is a small program that places the operating system (OS) of a computer into memory.Continue Reading

• What is VSAM (Virtual Storage Access Method)?

  Virtual Storage Access Method (VSAM) is an access method for IBM's mainframe operating system, MVS, now called z/OS.Continue Reading

• Requirements vs. user stories in software development

  User stories fulfill the same purpose as software requirements but through different means. Learn how to write user stories and how they relate to software requirements.Continue Reading

• click-wrap agreement (click-through agreement)

  A click-wrap agreement (click-through agreement) is an online agreement in which the user signifies their acceptance by clicking a button or checking a box that states, 'I agree.'Continue Reading

• A primer on Ceph storage technology, products

  Ceph is a scalable distributed storage platform that can evolve as needed. Take a deep dive into its popularity, assorted offerings and how to get around challenges.Continue Reading

• Common types of networking devices explained

  This introduction explores eight network devices that are commonly used within enterprise network infrastructures, including access points, routers and switches.Continue Reading

• Wireshark vs. tcpdump: What's the difference?

  Wireshark and tcpdump both aid network administrators in packet analysis. Wireshark's simple GUI contrasts with tcpdump's speed and scripting abilities, which enhances management.Continue Reading

• Windows Server Update Services (WSUS)

  Windows Server Update Services (WSUS) is a Windows server role that can plan, manage and deploy updates, service packs, patches and hotfixes for Windows servers, client operating systems (OSes) and other Microsoft software.Continue Reading

• cache memory

  Cache memory is a chip-based computer component that makes retrieving data from the computer's memory more efficient.Continue Reading

• Type 2 hypervisor (hosted hypervisor)

  A Type 2 hypervisor is a virtual machine (VM) manager that is installed as a software application on an existing operating system (OS).Continue Reading

• Virtual Machine Management Service

  The Virtual Machine Management service, also known as VMMS or vmms.exe, is the main module in the Microsoft Windows operating system for controlling the virtual machines (VMs) on a Hyper-V server.Continue Reading

• subnet (subnetwork)

  A subnet, or subnetwork, is a segmented piece of a larger network. More specifically, subnets are a logical partition of an IP network broken into multiple, smaller network segments.Continue Reading

• SATA Express (SATAe)

  SATA Express (SATAe or Serial ATA Express) is a bus interface to connect storage devices to a computer motherboard, supporting SATA and PCI Express protocols simultaneously.Continue Reading

• Group Policy

  Group Policy is a management feature in Microsoft's Active Directory (AD) that enables network and system administrators to configure and assign user and computer settings in an AD environment.Continue Reading

• bad block

  A bad block is an area of storage media that is no longer reliable for storing and retrieving data because it has been physically damaged or corrupted.Continue Reading

• reactive programming

  Reactive programming is a programming paradigm, or model, that centers around the concept of reacting to changes in data and events as opposed to waiting for an event to happen.Continue Reading

• ORM vs. SQL: When to use each

  Object relational mapping and raw SQL are two different ways to interact with relational databases. Learn when to use each of the two methods and when using both is appropriate.Continue Reading

• object-oriented programming (OOP)

  Object-oriented programming (OOP) is a computer programming model that organizes software design around data, or objects, rather than functions and logic. An object can be defined as a data field that has unique attributes and behavior.Continue Reading

• secure access service edge (SASE)

  Secure access service edge (SASE), pronounced sassy, is a cloud architecture model that bundles together network and cloud-native security technologies and delivers them as a single cloud service.Continue Reading

• Transmission Control Protocol (TCP)

  Transmission Control Protocol (TCP) is a standard protocol on the internet that ensures the reliable transmission of data between devices on a network.Continue Reading

• CIDR (Classless Inter-Domain Routing or supernetting)

  CIDR (Classless Inter-Domain Routing or supernetting) is a method of assigning IP addresses that improves the efficiency of address distribution and replaces the previous system based on Class A, Class B and Class C networks.Continue Reading

• How to use regex in PowerShell

  A regular expression is a series of characters that determine a matching pattern in text to find or replace input validation. Walk through a regex example in PowerShell.Continue Reading

• Azure Functions overview: A guide for Microsoft admins

  With Azure Functions, admins can tap into advanced automation, enjoy enhanced security controls and create highly customized workflows catered to the organization's needs.Continue Reading