February 2021 - Page 46 of 62

Common Problems 112913

Windows Server 2016 — DHCP Server service not binding to NIC — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 03 May 2027 Affected versions: Windows Server 2016 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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How to Use ibmservice to Register Support on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use ibmservice to Register Support on IBM AIX 7.2

Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use ibmservice to register support on ibm aix 7.2 […]

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static keyword in java — step-by-step Programming tutorial on Progressive Robot

static keyword in java

URL: https://www.progressiverobot.com/static-keyword-in-java/ static keyword in Java is used a lot in java programming. Java static keyword is used to create a Class level variable in java. static variables and methods are part of the class, not the instances of the class. static keyword in java ![java static, static keyword in java](images/static-keyword-in-java-section-1.png) Java static keyword can […]

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How to Configure DKIM, SPF and DMARC on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure DKIM, SPF and DMARC on RHEL 7

How to Configure DKIM, SPF and DMARC on RHEL 7 Email authentication standards — SPF, DKIM, and DMARC — are essential for any mail server that sends outbound email. Without them, your messages are likely to be rejected or placed in spam folders by major providers such as Gmail, Microsoft 365, and Yahoo. SPF (Sender […]

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Debian 10 — nginx — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — nginx — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-9511 CVE-2020-11724 CVE-2021-23017 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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How to Normalize data in R [3 easy methods] — step-by-step DevOps tutorial on Progressive Robot

How to Normalize data in R [3 easy methods]

URL: https://www.progressiverobot.com/normalize-data-in-r/ Hello, readers! In this article, we will be having a look at 3 Easy Ways to Normalize data in R programming. So, let us begin!! 🙂 What is Normalization? Feature Scaling is an essential step prior to modeling while solving prediction problems in Data Science. Machine Learning algorithms work well with the data […]

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Как установить Java с помощью Apt-Get в Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

Как установить Java с помощью Apt-Get в Ubuntu 16.04

Java и JVM (Виртуальная машина Java) широко используются в самом разном программном обеспечении. Эта статья описывает процесс установки и управления различными версиями Java с помощью утилиты apt-get. Для того, чтобы следовать инструкциям в этой статье,…

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Java 11 Features — step-by-step Programming tutorial on Progressive Robot

Java 11 Features

URL: https://www.progressiverobot.com/java-11-features/ We haven't fully immersed ourselves in Java 10 yet, and Java 11 is here. Java 11 is important for more than just a few reasons. Oracle has revamped its support model and come up with a release train that'll bring rapid updates, about every 6 months. They've changed the licensing and support model […]

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Debian 10 — tomcat9 — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — tomcat9 — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-10072 CVE-2020-9484 CVE-2020-13943 CVE-2021-25122 CVE-2021-30640 CVE-2021-41079 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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