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sysadmin-ii-sys265/windows/dhcp_check.ps1

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+# SYS265 - DHCP Lab
+# 1/31/25
+
+# Get Username
+function get_username(){
+    Write-Host 'Username:'$env:USERNAME
+}
+
+# Get IP Address
+function get_ip(){
+    $ip_address = (Get-NetIPAddress -AddressFamily IPv4 | Select IPv4Address | Where-Object { $_.IPv4Address -ne "127.0.0.1" } | Format-Table -HideTableHeaders | Out-String).Trim()
+    Write-Host 'IP Address:'$ip_address
+}
+
+# Get DHCP Server Address
+function get_dhcp(){
+    $dhcp_address = (Get-CimInstance Win32_NetworkAdapterConfiguration | Select DHCPServer | Format-Table -HideTableHeaders | Out-String).Trim()
+    Write-Host 'DHCP Server:'$dhcp_address
+    $dhcp_lease = (Get-CimInstance Win32_NetworkAdapterConfiguration | Select DHCPLeaseExpires | Format-Table -HideTableHeaders | Out-String).Trim()
+    Write-Host 'Lease Expiration:'$dhcp_lease
+}
+
+# Get Gateway IP
+function get_gateway(){
+    $gateway_address = (Get-CimInstance Win32_NetworkAdapterConfiguration | Select DefaultIPGateway | Format-Table -HideTableHeaders | Out-String).Trim()
+    Write-Host 'Default Gateway:'$gateway_address
+}
+
+# Get DNS Server IP
+function get_dns(){
+    $dns_address = ((Get-DnsClientServerAddress -AddressFamily IPv4 | Where-Object { $_.InterfaceAlias -ne "loopback" }).ServerAddresses | Out-String).Trim()
+    Write-Host 'DNS Server:'$dns_address
+}
+
+
+clear
+
+$Prompt = "`nChoose number for operation`n"
+$Prompt += "1. All`n"
+$Prompt += "2. Username`n"
+$Prompt += "3. IP`n"
+$Prompt += "4. DHCP`n"
+$Prompt += "5. Default Gateway`n"
+$Prompt += "6. DNS`n"
+$Prompt += "7. exit"
+
+$operation = $true
+
+while($operation){
+    Write-Host $Prompt | Out-String
+    $choice = Read-Host 
+    Write-Host "----------"
+
+    if($choice -eq 1){
+        get_username
+        get_ip
+        get_dhcp
+        get_gateway
+        get_dns
+    }
+
+    elseif($choice -eq 2){
+        get_username
+    }
+
+
+    elseif($choice -eq 3){
+        get_ip
+    }
+
+
+    elseif($choice -eq 4){
+        get_dhcp
+    }
+
+    elseif($choice -eq 5){
+        get_gateway
+    }
+
+    elseif($choice -eq 6){
+        get_dns
+    }
+
+    elseif($choice -eq 7){
+        Write-Host "Goodbye" | Out-String
+        exit
+        $operation = $false
+    }
+
+    else{
+        Write-Host "Invalid Input" | Out-String
+    }
+    
+    Write-Host "----------"
+
+}
+