AZ-700: Networking Flashcards
True or False: Virtual Networks cannot span across different regions or different subscriptions
True
True or False: Virtual Networks span across all availability zones in a region
True
True or False: Broadcast and Multicast are supported in an Azure virtual network
False
True or False: IPv6 is always /64 CIDR in Azure Networking
True
True or False: Subnets cannot span availability zones in a region
False, they span all of them just like the virtual networks
How many IP addresses are “lost” when creating a subnet in Azure
5, you lose 1 to network, 1 to default GW, 2 to DNS, and 1 to broadcast
Where are static IPs configured?
They are configured on a per resource level, not vnet.
Examples: done on the VM under its network interface
True or False: you can bring your own individual public IPs into Azure
False, Azure has its own set of IPs you need a public ip prefix of atleast /24 to bring it into azure
True or False: you can move Azure public IPs across regions
False, Azure IPs are per region
What are the two SKUs for a public IP in Azure and what are the differences
Basic and Standard
Basic -
-Dynamic or Statically assigned
-Open by Default
-No Availability Zone support
Standard-
-Static only
-locked down by default
-Availability Zone support
True or False: Load balancers and Public IPs need to have the same SKU tier
True
What is the name for a contiguous block of public IPs
Public IP Prefix
What is it called when you connect two unique Vnets in the same region
VNET Peering
What is it called when you connect two unique Vnets in different regions
Global Vnet Peering
True or False: you can peer Vnets across different vnet clouds (China, us gov, germany)
False
True or False: 2 unpeered vnets can natively talk if they are peered to the same tertiary vnet
False, vnet peering is not transitive, you would have to peer the two vnets together or have an appliance ( such as a firewall) on the tertiary vnet to route traffic between them
What are the two settings that need to be enable for a peered vnet to use the other peers gateway and what need to be enable on each
Allow gateway transit must be enabled on the “hub” vnet
Use remote gateway must be enabled on the vnet that needs to use the others gateway
Can you use a remote gateway if there is already a gateway in the vnet
no
Can you set the next “hop” in a route table to a different subnet or even network?
Yes
Can you connect 2 vnets together without peering them? How would you do it?
Yes, with route tables or “user defined routing”
What is the IP of Azure DNS
168.63.129.16
What is an inbuilt option in Azure for custom DNS?
Azure private DNS Zone
How many private DNS Zones can one Vnet have for registration?
1
How would you be able to have more than one private dns for a vnet?
you can have one for registration and multiple (up to 1000) for resolution
How many vnets are allowed per private dns zone that use that zone for Auto-registration?
100
How many vnets are allowed per private dns zone that use that zone for resolution?
1000
what are the two primary types of dns records added to an azure public dns zone
host and alias
What is the first thing you create while making a STS VPN vnet?
Gateway subnet
What is needed to configure a point to site VPN that connects to azure ad
Add an enterprise app to azure
When using ExpressRoute all inbound traffic goes through what resource by default?
The ExpressRoute Gateway
What is fastpath?
Fast Path is a way for inbound traffic to bypass the express route gateway and go straight to a resource
Does fast path still require a gateway?
Yes, gateways are still required for things like BGP route propagation and it must be the highest SKU
Does outbound express route traffic pass through the gateway?
No it goes straight to the MSEE
How many vnet links are allowed per expressroute circuit?
10 for standard for all circuit sizes and it can be increased with premium add on
Can you have both microsoft peering and private peering on the same ExpressRoute circuit?
Yes
What is required to make microsoft peering “work” once enabled?
A route filter
What protocol does a route filter use to advertise services?
BGP
With a stardard ExpressRoute SKU what regions can you use?
Any in the same geopolitical region
Ex. North america to north america, asia to asia
With a Premium ExpressRoute SKU what regions can you use?
All regions (Global)
Do you pay based on ingress or egress?
egress
What is another name for a “meet me”
peering point
What ExpressRoute SKU provides local region only
Local SKU
What is a faster alternative than having BGP detect a failure and do failover routing
BFD or Bidirectional Forwarding Detection
What does BFD stand for?
Bi-Directional Forwarding Detection
Is ExpressRoute an encrypted connection?
No
What service would you use to encrypt an ExpressRoute-Direct connection inside the meet me
This is between the customer edge router and the MSEE
MACsec
This is not end to end, this is inside the meet me only
What is an option for encrypting an express route connection
Site to Site VPN
What is the service you would use to connect two sites in different geopolitical regions using expressroute
ExpressRoute Global Reach
What is supported by the basic SKU of Azure Virtual WAN
S2S VPN only
What layer is Azure Load Balancer?
Layer 4
What is 5-Tuple
source IP address/port number, destination IP address/port number and the protocol in use
What are the two types of load balancers
internal and external
What is assigned to the front end of a load balancer
IP Address
What are the two SKUs for a load balancer?
Basic and standard
what is a 3-tuple
src ip
dest ip
protocol
What are two of the load balancing distribution modes
hash based distribution ( Uses 5-tuple hash based distribution by default)
Session persistence - Session persistence is also known session affinity, source IP affinity, or client IP affinity. This distribution mode uses a two-tuple (source IP and destination IP) or three-tuple (source IP, destination IP, and protocol type) hash to route to backend instances. When using session persistence, connections from the same client go to the same backend instance within the backend pool.
What layer is Azure App Gateway?
Layer 7 (HTTP/HTTPS)
Is Azure App Gateway regional or global?
regional
Is Azure Load Balancer regional or global?
Regional
Can the web application firewall have a public ip, private, or both
Pick Two
Public or Both
What layer is Azure Traffic Manager?
Layer 4
Is Azure Traffic Manager regional or global?
Global
What protocol does Azure Traffic Monitor primarily use?
DNS
What is the setting needed for Azure Traffic Manager to work like a load balancer
The performance option will resolve the closest target to the requester favoring latency
True or False: Azure Traffic Manager can resolve to both Azure Endpoints and External Enpoints such as FQDN or IP
True
What is the layer 7, global load balancing solution?
Azure Front Door
How does Azure Front Door provide load balancing
it gives an anycast ip address for all points of presence
What is the name of the tool used to create inbound and outbound security rules for a vnet
Network Security Groups
Is a network security group an edge device
Example: Like a firewall
no
Is a network security group an edge device
Example: Like a firewall
no
Where is a network security group enforced
at the VNET level
Are network security groups regional or global
regional
What does Virtual Network actually mean when it is applied in a nsg rule
It means all know ip space
(this would include peered vnets, S2S VPN, and anything else this virtual network would be “aware” of.)
How does an application security group work in practice? What is it most similar to?
It is a tag you can use when making security rules