Improving VoIP call quality
Changed phones from Wi-Fi to Ethernet and prioritized voice traffic to reduce network delay in a training scenario.
Hands-on IT support portfolio · Per Scholas training
I'm Liliane Konissi, an aspiring IT Support / Help Desk professional. I use Windows, networking, user administration, security, and structured troubleshooting to help people get back to work.
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Selected case studies
Three examples of how I diagnose a problem, take action, and check that the solution worked in a hands-on training environment.
Changed phones from Wi-Fi to Ethernet and prioritized voice traffic to reduce network delay in a training scenario.
Isolated a device, restored Microsoft Defender protection, removed suspicious changes, and verified a clean full scan.
Resolved driver, startup, browser, and account issues, then verified each repair before the device handoff.
Project library
Each project shows the business problem, tools, approach, and result. Projects are from training labs or documented practice workflows, not claimed production deployments.
Showing all 12 project areas
Restored a loaner laptop affected by missing Wi-Fi drivers, slow startup, browser access restrictions, and a disabled user account.
Created and managed domain identities, group memberships, organizational placement, sign-in restrictions, and policy checks.
Prepared a repeatable Windows installation process with backup-first checks, drive selection, configuration, and validation.
Improved simulated voice-call performance by replacing unstable Wi-Fi links with wired Ethernet and prioritizing voice traffic.
Contained an untrusted workstation, restored endpoint protections, removed a risky extension, and disabled an unapproved admin account.
Expanded a multimedia workstation with a dedicated graphics card, dual displays, and a three-drive RAID 5 array.
Set up and tested an RDP access path in a segmented practice network, while learning why remote access needs strict security controls.
Configured an Azure virtual machine using a resource group, region, Windows Server image, and selected compute size.
Managed Linux users and files, prepared web assets, inspected network and disk health, and configured host firewall rules.
Configured tablets and laptops for network use and practiced prioritizing clinic requests involving on-call phones, scanners, and printers.
Built a workflow that checks for data protection before reinstalling or rebuilding Windows, with verification steps afterward.
Collected technical system details into reusable report files using Windows and Linux administrative commands.
What I bring to an IT team
From preparing a new computer to resolving incidents, good IT support combines technical knowledge with clear communication and verification.
Install and configure devices and software.
Maintain users, settings, and resources.
Diagnose issues and verify the solution.
Protect accounts, endpoints, and data.
Help users and document their tickets.
Resolve login, software, slow-PC, network, and printer problems.
Set up Windows, accounts, applications, updates, and peripherals.
Apply access controls, endpoint protection, and safe recovery practices.
Troubleshoot internet, Wi-Fi, DNS, DHCP, VPN, and shared resources.
About the technician
I'm completing hands-on IT Support training at Per Scholas. My background in data analysis and customer service helps me approach technical problems carefully, communicate clearly, and stay focused on the person who needs help.
I'm looking for opportunities in IT Support, Help Desk, Service Desk, and Desktop Support, where I can bring reliable troubleshooting, Windows administration, networking fundamentals, and strong documentation.
Help Desk & Ticketing · Workstation support
A shared laptop was not ready for its next user. Several independent issues created connection, sign-in, and application problems.
Return the device to a reliable, usable state and document proof for each repair.
Separated network, startup, browser, and sign-in issues instead of assuming one root cause.
Reinstalled the Intel Wi-Fi 6 AX201 driver and verified that network adapters appeared correctly.
Disabled unnecessary startup items and the outbound firewall rule that blocked msedge.exe.
Re-enabled the intended loaner-user account and confirmed a successful sign-in.
Verified both adapters, restored secure-site access and user login, and recorded an 8-second sign-in after startup cleanup.
Less time lost at device handoff and clearer support-ticket resolution.
Active Directory · Identity management
An organization needs employees to access the right resources without giving everyone unnecessary permissions.
Set up access based on job needs and verify the policies that apply.
Created domain user accounts and placed them in the correct organizational structure.
Managed group membership and practiced account-based resource permissions.
Configured a user login-hours example for weekdays, 8 a.m.–5 p.m.
Used Active Directory tools and Group Policy reporting to review applied settings.
Practiced controlled account provisioning, permission assignments, and policy verification.
Supports secure onboarding and reduces the risk of incorrect access.
Windows Administration · Device setup
A new or rebuilt workstation must be ready for an employee without losing important data or skipping security settings.
Follow a consistent, well-documented installation and post-install readiness process.
Reviewed requirements and backup needs before changing a workstation.
Worked through Windows setup, drive/partition selection, and installation choices.
Planned account, driver, network, update, and baseline security steps.
Checked installation and documented observed results for the handoff.
Produced an eight-phase setup/runbook framework and practiced Windows installation checks.
Improves consistency in device preparation and reduces avoidable rework.
Networking · Network troubleshooting
A call center was experiencing choppy voice calls because its voice traffic was using an unreliable network path.
Improve call quality and reduce delay so employees can speak with customers clearly.
Reviewed the simulated call quality and network-delay symptoms.
Moved VoIP phones from Wi-Fi to wired Ethernet.
Applied a voice network design using VLAN 40 and quality-of-service prioritization.
Compared the before-and-after latency reported in the exercise.
Reduced reported latency from 190 milliseconds to 8 milliseconds in the simulated project.
Clearer calls and fewer communication interruptions.
Cybersecurity · Endpoint security
A clinic workstation showed multiple indicators of compromise, including changed browser settings and suspicious administrative access.
Isolate the device, reduce risk, remove suspicious changes, and verify it is safe to reconnect.
Isolated the affected workstation before troubleshooting further.
Turned on Microsoft Defender real-time protection and tamper protection.
Removed the suspicious browser extension, reset redirected browser settings, and disabled the unauthorized support_tmp account.
Completed security scans, confirmed the account roster, and reconnected after checks.
Recorded a clean final full scan and verification of corrected security settings.
Limits spread and helps restore trust in an affected workstation.
Hardware Support · PC assembly & upgrades
A workstation needed additional display capacity and a more resilient local disk configuration for its workload.
Install the correct components and ensure each is recognized and configured.
Selected compatible graphics, display, and storage connections.
Installed a PCIe graphics card, display cables, and three SATA disks.
Enabled RAID mode in BIOS and created a RAID 5 array.
Checked display connections and storage configuration.
Configured dual-monitor output and a three-disk RAID 5 array in the practice workstation.
Supports workstation productivity and drive-failure tolerance; RAID is not a substitute for backup.
Remote IT Support · Controlled remote access
A technician needed a way to reach a designated workstation across a network boundary in a simulation.
Understand how remote access, destination addressing, and segmentation work together.
Mapped the RDP destination to a designated practice workstation.
Created the lab’s TCP 3389 forwarding path.
Reviewed LAN and screened-network segmentation in the exercise.
Documented that real environments should prefer VPN or secure gateways, MFA, and limited exposure.
Completed the remote connectivity configuration and segmentation checks in a controlled lab.
Builds the foundation for effective remote troubleshooting without overlooking security.
Cloud & Virtualization · Cloud infrastructure
A team needed a virtual Windows Server environment without buying or preparing a physical machine.
Provision a cloud-hosted server with defined settings.
Organized the VM under the CorpNetCloud resource group.
Selected the West US 2 Azure region.
Used Windows Server 2022 Datacenter: Azure Edition / Gen2 training configuration.
Selected the D4s v3 size and reviewed deployment settings.
Practiced Azure VM provisioning and configuration choices.
Supports scalable testing and server administration without dedicated local hardware.
Linux Administration · Linux operations
A Linux system needed correct file ownership, deployable website files, and basic firewall protection.
Maintain access, software, and network controls from the command line.
Practiced locking accounts and changing file ownership and permissions.
Copied website files to a web directory and removed outdated content.
Created network, disk, and installed-application reports using command-line tools.
Installed and enabled UFW while allowing SSH access.
Produced system reports and practiced Linux file, user, and firewall administration.
Supports secure, repeatable maintenance on Linux-based systems.
Printers & Mobile Devices · Mobile and peripherals
A clinic depended on multiple mobile devices and peripherals for daily operations and needed quick, organized support.
Restore or configure device connectivity while prioritizing the most time-sensitive requests.
Ranked an urgent on-call phone request ahead of exam tablets and barcode scanner tasks.
Practiced joining tablets to secure Wi-Fi and enabling VPN connectivity.
Set device passcode and security settings as part of mobile readiness checks.
Used ticket triage to record device problems, priorities, and follow-up work.
Completed mobile configuration practice and structured clinic-device ticket triage.
Helps frontline teams keep essential devices available when they need them.
Backup & Recovery · Recovery planning
A workstation may need a reinstall, but user documents and settings must not be lost accidentally.
Make recovery work predictable and protect user data before disruptive changes.
Identify files, users, applications, and recovery requirements before starting.
Document where data should be backed up and how that backup would be checked.
Outline installation and restoration checkpoints in the Windows runbook.
Include checks for user files, access, updates, and device functionality after recovery.
Documented a backup-first recovery process; a completed data restoration is not claimed.
Reduces the chance of avoidable data loss during PC rebuilds.
IT Automation · Automation foundation
IT support needs reliable machine information to document incidents and compare system settings.
Gather host, network, disk, software, and policy information in a consistent format.
Used commands such as ipconfig and gpresult to inspect Windows network and policy details.
Collected host, resolver, disk, and installed-package information.
Used command output redirection to save results in text files.
Outlined how repeatable commands could be grouped into PowerShell or Bash scripts.
Created command-line system reports; a fully automated production script is not claimed.
Makes troubleshooting documentation more consistent and prepares repetitive tasks for scripting.