Powershell - Test if TCP port is open on Win server

Test-NetConnection -Port 801 -ComputerName 192.168.1.1 -InformationLevel Detailed

LINQ, LAMBDA - Example of Difference between Select and SelectMany

using System;
using System.Linq;


class School
{
 public string Name{get; set;}
 public Student[] Students{get;set;}
}

class Student 
{
 public string Name {get;set;}
}

     
public class Program
{
 public static void Main()
 {
  
  var schools = new [] {
   new School(){Name ="Harvard", Students = new [] { new Student(){ Name="Bob"}, new Student(){ Name="Jack"} }},
   new School(){Name ="Stanford", Students = new [] { new Student(){ Name="Jim"}, new Student(){ Name="John"} }}
  };
  
  //Select Many
  var allStudents = schools.SelectMany(s=> s.Students);
  
  Console.WriteLine("Results with one loop and SelectMany\n");
  foreach(var student in allStudents){
   Console.WriteLine(student.Name);
  }
  
  // Select
  var mySchool = schools.Select(s => s.Students);
  
  Console.WriteLine("Results with two loops and Select\n");
  foreach(var school in mySchool){

   foreach(var studentd in school){
    Console.WriteLine(studentd.Name);
   }
   
  }
  
 }
}