Ecsa102 Blob Bca 2026 Core Concept Learning Script

ECSA102 BLOB BCA 2026 CORE CONCEPT
LEARNING SCRIPT

◉ Powershell - Command to create a new virtual network and store
it as a variable $NewVnet. Answer: $NewVnet = New-
AzVirtualNetwork -Name <ex. Alpha> -ResourceGroupName
<ex.IT_Tech_Dept> -Location <eastus> -AddressPrefix
"10.20.0.0/16"


◉ Powershell - Get-Command <search words>. Answer: this cmdlet
searches the database for a command that matches your search
keyword


◉ what is a subnet?. Answer: A logical division of your network
(Vnet)
A Vnet can have many subnets
Subnets cannot have the same or overlapping CIDR blocks if they
exist in the same Vnet


◉ Powershell - Command to add a subnet to your virtual network
and make it a variable $NewSubnet. Answer: $NewSubnet = Add-
AzVirtualNetworkSubnetconfig -Name <name> -VirtualNetwork
$NewVnet -AddressPrefix 10.20.30.0/24 -

,◉ Portal - How to attach a NIC to a VM. Answer: VM > Networking >
Attach Network Interface
You cannot attach a NIC to a VM while its running, it must be
stopped
A VM can have an IP from subnet 1 going to one NIC and an IP from
subnet 2 going to another NIC


◉ Private IP addresses are used for communication ___________ the
Azure Vnet.. Answer: within
-a private IP address will also be used with communication from the
vnet to an on prem network


◉ Public IP addresses are used for communication with the
__________. Answer: internet


◉ A private IP address can be associated with 3 devices. Answer: VM
Internal Load Balancer
Application Gateway
Dynamic and static supported


◉ A public IP address can be associated with 4 devices. Answer: VM
Load Balancer
VPN Gateway - no static option

,Application Gateway - no static option


◉ Creating a public IP address types - Basic. Answer: Static or
Dynamic options
Security is open by default
Resources are NICs, VPN GWs, App GWs, and internet facing LBs
Not zone redundant


◉ Creating a public IP address types - Standard. Answer: Static IP
only
Security has closed inbound traffic by default
Resources are NICs or Public standard LBs
Zone redundant by default


◉ How to assign a Public IP address you just created to a VM or LB?.
Answer: Search for "public ip addresses"
click on the public ip address listed that you just created
Click associate to assign it a VM or LB
Click dissociate to un assign the public ip address


◉ Powershell - Command to retrieve all network interfaces info in
your subscription. Answer: Get-AzNetworkInterface

, ◉ Powershell - Get-AzNetworkInterface | select Name. Answer:
Shows you as list of all the network interface cards in your
subscription
the piped portion selects just the Name of the NICs and lists only
those names


◉ Powershell - Get-AzNetworkInterface -Name <NIC name> -
ResourceGroupName <RG name>. Answer: gives you networking
information about a specific NIC


◉ Powershell - $nic.IpConfigurations - what is the .Configurations
part called?. Answer: an attribute


◉ Powershell - Commands to set a specific NIC's IP address to static.
Answer: $nic = Get-AzNetworkInterface -Name <NIC> -
ResourceGroup Tech_IT
$nic.IpConfigurations.PrivateIpAllocationMethod - "static"
Set-AzNetworkInterface -NetworkInterface $nic


◉ Powershell - #. Answer: comment out


◉ Service Endpoints. Answer: Azure VMs can interact with Azure
Paas Services like SQL and Storage accounts as if they are apart of
the same Virtual Network rather than using the public internet