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Practical Tasks - UD04

These tasks cover the practical application of process management and network configuration concepts.

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Process Management Tasks

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Task 1: Windows Task Manager

Practice using the Windows Task Manager for process management.
Objective: End processes using Task Manager
1

Launch Applications

Start Notepad, Microsoft Edge, and Calculator
2

Open Task Manager

Right-click Start button → Task Manager
3

End Tasks

Terminate each application from Task Manager
4

Document

Take screenshots of each terminated application
Objective: Find system uptime
  1. Open Task Manager
  2. Navigate to Performance tab
  3. Find and document the system uptime
  4. Take a screenshot
Objective: Identify most used applicationsCreate a list of the top 3 most used applications by the adminiso user based on the App History tab.
Objective: Document process informationFill in the table with executable names and descriptions:
ApplicationExecutable NameDescription
Notepad
Edge
File Explorer
Paint 3D
Solitaire
Microsoft Store
Photos
Use the Details tab in Task Manager.
Objective: Audit startup programs
  1. Check your home computer (or VM)
  2. Count how many applications start at login
  3. Take a screenshot of the Startup tab
  4. Identify programs that could be disabled to improve boot time

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Task 2: Process Explorer

  1. Download Process Explorer from Microsoft Sysinternals
  2. Extract and run the executable
  3. Explore the process tree view
  4. Compare with Task Manager
  1. Find a running application in Process Explorer
  2. View its properties (right-click → Properties)
  3. Examine the Threads, TCP/IP, and Security tabs
  4. Document interesting findings

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Task 3: PowerShell Process Management

Write a PowerShell script to:
  1. List all processes sorted by CPU usage (descending)
  2. Show only Name, Id, and CPU columns
  3. Export results to CSV file
# Your script here
Create a script that:
  1. Finds processes using more than 100MB of RAM
  2. Displays Name, Id, and WorkingSet
  3. Runs continuously (refreshing every 5 seconds)
Use while ($true) loop and Start-Sleep

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Task 4: Linux Process Management

Modify and complete these scripts:
Modify the script to send SIGKILL (signal 9):
#!/bin/bash

echo " Obtenemos el PID"
PID_AUX=$(ps -e | grep firefox | cut -d " " -f2)
echo " - PID : $PID_AUX"
kill -10 $PID_AUX
exit 0
Task: Change -10 to -9 to send SIGKILL.
Modify to show PIDs in the process tree:
#!/bin/bash

echo " Obtenemos el PID"
PID_AUX=$(ps -e | grep firefox | cut -d " " -f2)
echo " - PID : $PID_AUX"
pstree $PID_AUX
exit 0
Task: Add the -p parameter to pstree to show PIDs.
Modify to launch process with priority 10:
#!/bin/bash

echo -n " Indique el proceso : "
read PROCESO
nice $PROCESO
exit 0
Task: Add the -n 10 parameter to the nice command.
Scenario: The company “Creando, Creando, vamos mejorando” has problems with nightly print processes.Two processes run each night:
  • imprime-normal
  • imprime-3d
Sometimes they don’t finish properly and become zombies.Requirements:
  1. Check if processes are already running
  2. Kill them if they’re zombies
  3. Launch both processes with high priority (nice -4 to -6)
#!/bin/bash
# Your solution here

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Network Configuration Tasks

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Task 5: PowerShell Network Configuration

Create a script that generates a network inventory:
  1. List all network adapters
  2. Show IP addresses for each adapter
  3. Display DNS servers
  4. Test connectivity to 8.8.8.8
  5. Export results to text file
Write a script that:
  1. Tests connectivity to multiple servers
  2. Resolves DNS for each server
  3. Displays results in a formatted table
  4. Saves failed tests to error log
Servers to test:

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Task 6: Linux Network Configuration

Objective: Configure static IP using netplan
1

Backup Current Config

sudo cp /etc/netplan/01-netcfg.yaml /etc/netplan/01-netcfg.yaml.backup
2

Edit Configuration

Create a static IP configuration:
  • IP: 192.168.1.100/24
  • Gateway: 192.168.1.1
  • DNS: 8.8.8.8, 8.8.4.4
3

Apply Configuration

sudo netplan try
4

Verify

ip addr
ip route
Use netplan try - it auto-reverts if you lose connection!
Create a BASH script that:
  1. Checks if network interface is up
  2. Pings local gateway
  3. Pings 8.8.8.8
  4. Tests DNS resolution
  5. Reports which step failed (if any)
#!/bin/bash
# Network troubleshooting script
# Your code here

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Task 7: Cross-Platform Network Commands

Complete the table with equivalent commands:
TaskWindows (PowerShell)Linux
Show IP configGet-NetIPConfiguration
Test connectivityping -c 5
DNS lookupResolve-DnsName
Show route tableip route
Disable adaptersudo ip link set eth0 down
For both Windows and Linux systems, document:
  1. Network adapter name
  2. MAC address
  3. IP address
  4. Subnet mask
  5. Default gateway
  6. DNS servers
  7. Connection speed
  8. How to change these settings

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Advanced Challenges

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Challenge 1: Process Monitor Dashboard

Create an advanced monitoring script that:
  • Shows top 5 CPU-intensive processes
  • Shows top 5 memory-intensive processes
  • Shows network usage by process
  • Refreshes every 3 seconds
  • Uses colored output
  • Allows user to kill a process by entering PID
Create a system monitor that:
  • Shows CPU usage percentage
  • Shows memory usage
  • Lists processes using most resources
  • Tests network connectivity
  • Displays everything in a formatted dashboard
  • Refreshes automatically

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Challenge 2: Network Configuration Backup

Create a script that:
  1. Exports all network adapter configurations
  2. Saves to timestamped backup file
  3. Can restore from backup file
  4. Validates configuration before applying
Create a script that:
  1. Backs up netplan configuration
  2. Backs up /etc/hosts and /etc/resolv.conf
  3. Creates restore script automatically
  4. Tests network after restore

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Challenge 3: Service Monitoring

Scenario: Create a monitoring system that:
  • Checks if critical services/processes are running
  • Automatically restarts them if stopped
  • Logs all actions with timestamps
  • Sends alert if restart fails
  • Works on both Windows and Linux
1

Define Critical Services

List 3-5 services/processes to monitor
2

Check Status

Implement check for each service
3

Auto-Restart

Restart service if stopped
4

Logging

Log all checks and actions
5

Alerting

Create alert mechanism for failures

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Submission Guidelines

What to Submit:
  • All completed scripts (in a single ZIP file)
  • Screenshots where requested
  • Completed tables and documentation
  • Brief explanation of your solutions
File Naming:
  • UD04_Task[Number]_[YourName].zip
  • Include README.md with instructions

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Grading Criteria

CriteriaPoints
Scripts execute without errors30%
Correct functionality30%
Code quality and comments20%
Documentation and screenshots20%
Test all scripts before submission. Scripts that don’t run will receive reduced scores.

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