Legacy Haven University

Category: Network+ (N10-009)

The CompTIA Network+ (N10-009) certification establishes the essential baseline knowledge required to deploy and support enterprise-grade network environments. In modern IT ecosystems, engineers must seamlessly bridge physical infrastructure with software-defined networking, cloud interconnects, and zero-trust security postures.

This category provides clear, domain-aligned educational content and technical walkthroughs tailored to both aspiring network administrators and candidates preparing for the N10-009 examination. Explore step-by-step subnetting guides, protocol comparisons, routing and switching configurations, command-line troubleshooting workflows, and performance-based question (PBQ) review scenarios.

  • SY0-701 Lab: IAM Hardening — Enforce MFA with a Policy Condition

    An IAM policy grants broad access with no MFA requirement. Inspect the finding, then rewrite the policy so access is denied unless the session is MFA-authenticated — stopping stolen static credentials from being enough.

  • Data Privacy Engineering: Tokenization vs Masking for Compliance

    Tokenization and data masking stop a viewer from reading a full sensitive value.

  • CAS-005 Lab: Dynamic Data Masking & RLS in PostgreSQL

    Separate administrative access from data access. Turn on Row-Level Security so each tenant only sees its own rows, then add a masking view so a support role sees redacted PII (SSNs) while the owner sees the real values.

  • Securing the Crown Jewels: Row-Level Security (RLS) and Column-Level Encryption

    Full-disk encryption stops a stolen drive. It does not stop a privileged session that already sits on the database. Row-level security (RLS) and column-level encryption split who may open the system from which records and fields that session may read.

  • 220-1202 Lab: Managing Tickets in an ITSM Platform

    A user opens a ticket: ‘I can’t print payroll and it’s due today.’ Work it end-to-end through the ITSM lifecycle in order, set the right priority, and map the ITIL concepts a helpdesk tech uses every day.

  • Operational Procedures: Ticketing & Change Management

    A ticket records who is blocked, which device is involved, and what you did. A change record decides whether that fix may touch a live system. CompTIA A+ Core 2 (220-1202) tests both under Domain 4.0 Operational Procedures: 4.1 covers documentation and support-system information management; 4.2 covers change-management procedures.

  • 220-1201 Lab: Configuring Network Printers & Spoolers

    The office network printer has a jammed queue — jobs pile up and nothing prints. Restart the Print Spooler the right way: stop the service, clear the stuck spool files, start it again, and verify the printer is ready.

  • Printer Troubleshooting: Laser vs Inkjet

    A printer ticket is a technology ticket first. CompTIA A+ Core 1 (220-1201) splits that work across three objectives: deploy the device (3.7), maintain the right consumable for that technology (3.8), then match the printed page and the queue to a named fault (5.6). Laser and inkjet share paper, drivers, and a queue. They do…

  • N10-009 Lab: Crafting Standard & Extended ACLs

    Filter traffic on R1 two ways: a numbered standard ACL that permits only the management subnet, and an extended ACL that permits HTTPS to a specific server while everything else is denied. Then apply and verify.

  • Network Security: Firewalls, ACLs, and IDS/IPS

    A Network+ candidate stops unwanted traffic at named appliances and named rules. CompTIA tests whether you can place a firewall, apply an access control list (ACL), and tell an intrusion detection system (IDS) from an intrusion prevention system (IPS) without mixing those jobs.