Core Services: Networking

Question 1

Azure Virtual Network

Answer 1

Azure Virtual Network (VNet) is the fundamental building block for your private network in Azure. VNet enables many types of Azure resources, such as Azure Virtual Machines (VM), to securely communicate with each other, the internet, and on-premises networks.

Choose a range of Ips (big range)
Lower the number = more IP addresses

Question 2

Virtual Private Network (VPN)

Answer 2

Secure connection (not public internet) for connecting to cloud resources from on prem.

Question 3

Azure Load Balancer

Answer 3

Used for distributing incoming network traffic across a group of backend resources (VMs or servers)

Distributes across several availability zones to get high availability

You define the forwarding rules based on source IP and port to destination IP and port.

Question 4

Azure Application Gateway

Answer 4

Azure Application Gateway is a web traffic load balancer that enables you to manage traffic to your web applications.

Application Gateway can make routing decisions based on additional attributes of an HTTP request e.g. /images or /video, can route to the best server for this.

Question 5

Azure DNS

Answer 5

Azure DNS is a hosting service for DNS domains that provides name resolution by using Microsoft Azure infrastructure.

Provides ultra-fast DNS responses and ultra-high domain availability

Question 6

Azure Content Delivery Network

Answer 6

Delivers high-bandwidth content to customers globally

Question 7

Azure DDoS Protection

Answer 7

Protects Azure-hosted applications from distributed denial of service (DDOS) attacks

Question 8

Azure Traffic Manager

Answer 8

Distributes network traffic across Azure regions worldwide

Operates at the DNS layer

Question 9

Azure ExpressRoute**

Answer 9

ExpressRoute lets you extend your on-premises networks into the Microsoft cloud over a private connection facilitated by a connectivity provider.

Connects to Azure from on prem over high-bandwidth dedicated secure connections

Super fast connection

Question 10

Azure Network Watcher

Answer 10

Monitors and diagnoses network issues using scenario-based analysis

Question 11

Azure Firewall

Answer 11

Implements high-security, high-availability firewall with unlimited scalability

Question 12

Network Security Groups

Answer 12

Virtual firewall at subnet level

Can group VMs within a subnet to have certain security.

Question 13

Subnets

Answer 13

Breakup of vNet into smaller partitions

Have fewer IP addresses than Vnets

Question 14

Public/private subnets

Answer 14

Public reach the internet. Private do not.