VPC Flashcards

1
Q

what is an example of a netmask for vpc?

A

/24
/21

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2
Q

what is the netmask of a micro vpc

A

/24

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3
Q

what is the netmask of a small vpc

A

/21

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4
Q

what is the netmask of a medium vpc

A

/19

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5
Q

what is the netmask of a large vpc

A

/18

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6
Q

what is the netmask of an extra large vpc

A

/16

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7
Q

when determining VPC size what is necessary

A

How many subnets needed
How many total ips, and how many ip per subnet

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8
Q

Controls whether resources created inside the VPC are provisioned on shared hardware or dedicated hardware

A

Tenancy

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9
Q

Is DNS in a VPC provided by Route53?

A

Yes

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10
Q

Can a subnet be in multiple AZ?

A

No

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11
Q

Can an AZ have more than one subnet?

A

Yes

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12
Q

Can subnets overlap with eachother?

A

No

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13
Q

First IP in any subnet that is reserved (ex.10.16.16.0)

A

Networking Address

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14
Q

IP that is reserved after the Networking Address used by the VPC router, the Second address in a subnet (ex.10.16.16.1)

A

Network +1 Address

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15
Q

IP that is used for the DNS reservation, Third address in a subnet (ex.10.16.16.2)

A

Network +2 Address

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16
Q

IP that is used for reserved for future use. (ex.10.16.16.3)

A

Network +3 address

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17
Q

Ip that is used for broadcasting, Last IP in the subnet (ex.10.16.16.255)

A

Broadcast Address

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18
Q

Control the DNS servers, domain names, or Network Time Protocol (NTP) servers used by the devices in your VPC or disables DNS resolution completely in your VPC

A

DHCP Options Set

19
Q

Can you edit the DHCP Options Set after applying?

A

No need to delete and create a new one

20
Q

How to make a subnet public?

A

Auto assign public IPv4 addresses

21
Q

Allows IPv4 private instances outgoing access to the internet

A

NAT

22
Q

How can an Internet Gateway (IGW) be configured to be highly available

A

Highly Available by Default

23
Q

Is /16 the max size of a VPC and /28 is the minimum size of a VPC?

A

Yes

24
Q

can Default VPC’s be recreated?

A

Yes

25
Q

Do you need an internet gateway per AZ

A

No

26
Q

Is IPv4 configured in the OS with the public IP address

A

No, with it’s private IP

27
Q

Are Bastion Host and Jumpbox the same thing?

A

Yes

28
Q

Instance in a public subnet within a vpc using to allow incoming management connection

A

Bastion Host

29
Q

Established connection between two devices using a random port on a client and known port on the server

A

TCP

30
Q

Doesn’t understand the state of connections, requires 1 inbound and 1 outbound rule

A

Stateless Firewall

31
Q

Can a request be inbound or outbound

A

Yes

32
Q

intelligent enough to identify the request and response components of a connection as being related

A

Stateful Firewall

33
Q

Allowing the request means that the response is allowed automatically

A

Stateful Firewall

34
Q

Every subnet has an associated NACL

A

True

35
Q

Contain rules grouped into inbound and outbound that controls traffic in and out of subnets

A

NACL

36
Q

Rules are processed in order, lowest rule number first

A

NACL

37
Q

Can NACL be assigned to AWS resources?

A

No only subnets

38
Q

Is NACL stateless or stateful

A

Stateless

39
Q

Are Security groups stateful or stateless

A

Stateful

40
Q

Are security groups attached to network interfaces

A

Yes

41
Q

process of remapping source ip’s and destination ips

A

Network Address Translation (NAT)

42
Q

Where does a NAT Gateway run from

A

Public Subnet

43
Q

NAT Gateway are an AZ resilent service, for region resilience NATGW needs to be in EACH AZ

A

True

44
Q

Can security groups be used with NAT Gateways

A

No only NACL