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70-533 Azure > Implement Virtual Networks (10-15%) > Flashcards

Implement Virtual Networks (10-15%) Flashcards

1
Q

What are the 2 requirements to create a DNS zone in Azure DNS?

A
  1. The name of the zone must be unique within the resource group.
  2. The zone must not already exist in that resource group.
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2
Q

True/False: The same zone name can be reused in a different resource group or a different Azure subscription

A

True

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3
Q

What DNS record types does Azure DNS support?

A

Azure DNS supports all common DNS record types: A, AAAA, CNAME, MX, NS, PTR, SOA, SRV, and TXT. Note that SPF records are represented using TXT records.

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4
Q

What is a Record Set in relation to Azure DNS?

A

A collection of DNS records in a zone that have the same name and are of the same type - aka resource record set.

Example: Sometimes you need to create more than one DNS record with a given name and type. For example, suppose the ‘www.contoso.com’ web site is hosted on two different IP addresses. The website requires two different A records, one for each IP address.

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5
Q

Which 2 types of DNS records are not allowed to have multiple entries (record set)?

A
  1. SOA

2. CNAME

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6
Q

Which 2 types of DNS record sets do not support Wild Cards in Azure DNS?

A
  1. NS

2. SOA

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7
Q

True/False: Azure DNS supports using Azure Resource Manager tags on DNS zone resources.

A

True

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8
Q

What is the difference between Tags and Metadata in Azure DNS?

A

Similar to tags, metadata enables you to associate name-value pairs with each record set. This can be useful, for example to record the purpose of each record set. Unlike tags, metadata cannot be used to provide a filtered view of your Azure bill and cannot be specified in an Azure Resource Manager policy.

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9
Q

Azure DNS default zones per subscription?

A

100

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10
Q

Azure DNS default record sets per zone?

A

5000

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11
Q

Azure DNS default records per record set?

A

20

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12
Q

PS: Get Name Servers from Azure DNS?

A

Get-AzureRmDnsZone

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13
Q

Does Azure DNS provide an Authoritative or Recursive DNS?

A

Azure DNS provides an Authoritative DNS service.

*Cloud Services and VMs within Azure are automatically configured to use a recursive DNS service that is provided separately as part of Azure’s infrastructure.

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14
Q

What are the 3 Load Balancing Policies for Traffic Manager?

A
  1. Performance - Direct to closest service base3d on network latency
  2. Round Robin - Distribute equally across all services
  3. Failover - backup if primary fails.
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15
Q

What type of DNS record is needed for Traffic Manager?

A

CNAME

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16
Q

Default URL for Traffic Manager?

A

.trafficmanager.net

17
Q

True/False: The client connects to the application service endpoint directly, NOT through Traffic Manager.

A

True

18
Q

What are the 3 ways you can connect Azure to your On-Prem?

A
  1. Point To Site VPN
  2. Site to Site VPN
  3. Azure ExpressRoute
19
Q

What are the 2 ways you can filter traffic between subnets in Azure?

A
  1. Network Security Groups (NSG)

2. Network Virtual Appliance (NVA) - 3rd party appliances like Cisco, Barricuda, pfSense,F5

20
Q

How does a VM (by default) communicate to the outside Internet?

A

The private IP address of the resource is source network address translated (SNAT) to a public IP address by the Azure infrastructure.

21
Q

Default URL for Azure Load Balancer?

A

.cloudapp.net

22
Q

What type of Algorithm does Azure Load Balancer User?

A

A hash-based distribution algorithm. By default, it uses a 5-tuple hash composed of source IP, source port, destination IP, destination port, and protocol type to map traffic to available servers.

23
Q

What 3 Types of Service Monitoring can Azure Load Balancer do?

A
  1. Guest agent probe (on Platform as a Service Virtual Machines only)
  2. HTTP Custom Probe
  3. TCP Custom Probe
24
Q

What are the 3 different options to distribute network traffic using Microsoft Azure?

A
  1. Azure Load Balancer works at the transport layer (Layer 4 in the OSI network reference stack). It provides network-level distribution of traffic across instances of an application running in the same Azure data center.
  2. Application Gateway works at the application layer (Layer 7 in the OSI network reference stack). It acts as a reverse-proxy service, terminating the client connection and forwarding requests to back-end endpoints.
  3. Traffic Manager works at the DNS level. It uses DNS responses to direct end-user traffic to globally distributed endpoints. Clients then connect to those endpoints directly.
25
Q

PS: Verify a IP Address is free?

A

Test-AzureRmStaticVnetIP

26
Q

CLI: Create Interla Load Balancer Set

A

azure network lb create

70-533 Azure (19 decks)

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