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Microsoft Azure Fundamentals > Describe Azure compute and networking services > Flashcards

Describe Azure compute and networking services Flashcards

1
Q

What cloud service model would a VM fall under?

A

Infrastructure as a service (IaaS).

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2
Q

With a VM being infrastructure as a service (IaaS), what would the tenant be responsible for?

A

Configuring, updating, and maintaining software on the VM.

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3
Q

How can multiple identical VMs be created?

A

Preconfigured VM image; A template used to create a VM and may already include an OS and other software.

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4
Q

Define ‘Azure Virtual Desktop’

A

Desktop and application virtualization service that enabling you to use a cloud-hosted version of Windows.

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5
Q

Define a ‘container’

A

A bundle of application code with all the files and libraries it needs to run on any infrastructure.

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6
Q

What is the benefit of an azure function?

A

Ideal when you’re only concerned about the code running your service and not about the underlying platform or infrastructure.

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7
Q

How do azure functions operate?

A

Runs your code when it’s triggered and automatically deallocates resources when the function is finished.

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8
Q

What are the two forms of azure functions?

A
  1. Stateless
  2. Stateful
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9
Q

Define a stateless azure function

A

Behave as if they’re restarted every time they respond to an event; does not retain information about previous processes.

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10
Q

Define a stateful azure function

A

The function can store, record, and return to already established information and processes.

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11
Q

Define the ‘azure app service’

A

Enables you to build and host web apps, background jobs, and RESTful APIs in any programming language without managing infrastructure.

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12
Q

How does the azure app service integrate with code repositories?

A

Enables automated deployments from GitHub, Azure DevOps, or any Git repo.

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13
Q

How does azure manage the infrastructure that supports an app service?

A

Secured endpoints; Integrated deployment/management; Load balancing; Scalability.

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14
Q

What is the purpose of virtual networking in azure?

A

Enables azure resources to communicate with each other, the internet, and with on-premises infrastructure.

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15
Q

What are the three ways to link an azure network with an on-premises network?

A
  1. Point-to-site VPN
  2. Site-to-site VPN
  3. Azure ExpressRoute
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16
Q

Define ‘Azure ExpressRoute’ gateway

A

A direct/private connection between on-premises infrastructure and Microsoft cloud services.

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17
Q

How can network traffic be filtered in azure?

A

Network security groups; network virtual appliances.

18
Q

Define a network security group

A

Azure resources that can contain multiple inbound and outbound security rules.

19
Q

Define a network virtual appliance

A

VMs that carry out a particular network function, such as firewall or performing WAN optimization.

20
Q

Define ‘virtual network peering’

A

Creates a direct/private connection between two virtual networks on the Microsoft backbone that will never travel the internet.

21
Q

What function allows you to control routing tables between subnets within a virtual network or between virtual networks?

A

User-defined routes (UDR).

22
Q

When deploying a VPN gateway, how many can be in one virtual network?

A

You can deploy only one VPN gateway in each virtual network; Once gateway can be used to connect multiple locations.

23
Q

What are the two types of VPN gateways?

A
  1. Policy-based
  2. Route-based
24
Q

Define how a ‘policy-based’ VPN gateway functions

A

An encrypted tunnel is created when source, destination, interface, application, and action, match a policy.

25
Q

Define how a ‘route-based’ VPN gateway functions

A

You have to create tunnels specifying all IPSec-related settings, add routes for remote networks, create Security rules to allow traffic.

26
Q

What are the best use cases for a route-based VPN?

A
  • Connections between virtual networks
  • Point-to-site connections
  • Multisite connections
  • Coexistence with an Azure ExpressRoute gateway
27
Q

How are VPN gateways made to be fault tolerant?

A

By default, VPN gateways are deployed as two instances in an active/standby configuration; zone-redundant gateways; Active/Active.

28
Q

What is the connection between on-prem and azure called when using ExpressRoute?

A

ExpressRoute Circuit.

29
Q

How can on-prem sites be connected using ExpressRoute?

A

If two sites have existing independent ExpressRoute to azure, they can establish an additional ExpressRoute between each other.

30
Q

Define a ‘point-to-point’ ExpressRoute

A

Using a point-to-point connection to connect your facility to the Microsoft cloud.

31
Q

Define an ‘any-to-any’ ExpressRoute

A

Integrate your wide area network (WAN) with Azure by providing connections to your offices and datacenters.

32
Q

Define ‘Azure DNS’

A

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

33
Q

Where is Azure DNS hosted?

A

On Azure’s global network of DNS name servers.

34
Q

How dos Azure DNS ensure efficiency?

A

Uses anycast networking, so each DNS query is answered by the closest available DNS server.

35
Q

How can the security of Azure DNS be managed by a tenant?

A

Azure role-based access control; Activity logs; Resource locking.

36
Q

Can Azure DNS provide service for external resources?

A

Yes.

37
Q

How does Azure DNS provide customizable DNS?

A

Supports private DNS domains; Allows you to use your own custom domain names in your private virtual networks.

38
Q

Define an ‘alias record set’

A

Used to refer to an Azure public IP address, an Azure Traffic Manager profile, or an Azure Content Delivery Network (CDN) endpoint.

39
Q

Define the function of an alias record set

A

The alias record set points to the service instance and the service instance is associated with an IP address.

40
Q

Define the purpose of an alias record set

A

If the IP address of the underlying resource changes, the alias record set seamlessly updates itself during DNS resolution.

41
Q

Which Azure Virtual Machine feature staggers updates across VMs based on their update domain and fault domain?

A

Availability sets.

42
Q

What can you use to connect Azure resources, such as Azure SQL databases, to an Azure virtual network?

A

Service endpoints are used to expose Azure services to a virtual network, providing communication between the two.

Microsoft Azure Fundamentals (13 decks)

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