AWS VPC UPDATED Questions and
CORRECT Answers
Can you change the address range of a VPC after you create it? - CORRECT ANSWER✔✔-
no
An AWS address range may be as large as __ and as small as __. - CORRECT
ANSWER✔✔- as large as /16 (65,536) and as small as /28 (14 available addresses)
5 mandatory components of a VPC - CORRECT ANSWER✔✔- 1. subnets
2. route tables
3. DHCP option sets
4. Security Groups
5. NACLs
7 optional components of a VPC - CORRECT ANSWER✔✔- 1. IGW- Internet Gateway
2. EIP- Elastic IP
3. ENI- Elastic Network Interfaces
4. Endpoints
5. Peering
6. NAT
7. VPG/CPG/VPN
AWS reserves ___ and __ for internal networking purposes. - CORRECT ANSWER✔✔-
AWS reserves the first 4 IP addresses and the last IP address of every subnet for internal
networking purposes. 5 IP addresses in total are subtracted per subnet.
Can a subnet span more than one AZ? - CORRECT ANSWER✔✔- no
Can a subnet span more than one region? - CORRECT ANSWER✔✔- no, not even more
than one AZ
, 3 types of subnets - CORRECT ANSWER✔✔- public, private or VPN only
What is a public subnet? - CORRECT ANSWER✔✔- a subnet in which the route table
directs traffic to the IGW
What is a private subnet? - CORRECT ANSWER✔✔- a subnet in which the route table does
not direct traffic to the IGW
What is a VPN only subnet? - CORRECT ANSWER✔✔- a subnet in which the route table
does not direct traffic to the IGW, but does direct it to the VPG
What is the default VPC configuration? - CORRECT ANSWER✔✔- 1 public subnet in
every AZ in the region with a netmask of /20
route tables - CORRECT ANSWER✔✔- determine where traffic is directed,
the route table determines if the subnet is private/public
What is the local route? - CORRECT ANSWER✔✔- default route that allows
communication within the VPC, which cannot be removed or changed
Can you modify the main route table? - CORRECT ANSWER✔✔- yes, just not the local
route
Can you create and add custom route tables? - CORRECT ANSWER✔✔- yes
Can you replace the main route table? - CORRECT ANSWER✔✔- yes
What happens if you don't specify a route table for a subnet? - CORRECT ANSWER✔✔- it
automatically gets the main route table
CORRECT Answers
Can you change the address range of a VPC after you create it? - CORRECT ANSWER✔✔-
no
An AWS address range may be as large as __ and as small as __. - CORRECT
ANSWER✔✔- as large as /16 (65,536) and as small as /28 (14 available addresses)
5 mandatory components of a VPC - CORRECT ANSWER✔✔- 1. subnets
2. route tables
3. DHCP option sets
4. Security Groups
5. NACLs
7 optional components of a VPC - CORRECT ANSWER✔✔- 1. IGW- Internet Gateway
2. EIP- Elastic IP
3. ENI- Elastic Network Interfaces
4. Endpoints
5. Peering
6. NAT
7. VPG/CPG/VPN
AWS reserves ___ and __ for internal networking purposes. - CORRECT ANSWER✔✔-
AWS reserves the first 4 IP addresses and the last IP address of every subnet for internal
networking purposes. 5 IP addresses in total are subtracted per subnet.
Can a subnet span more than one AZ? - CORRECT ANSWER✔✔- no
Can a subnet span more than one region? - CORRECT ANSWER✔✔- no, not even more
than one AZ
, 3 types of subnets - CORRECT ANSWER✔✔- public, private or VPN only
What is a public subnet? - CORRECT ANSWER✔✔- a subnet in which the route table
directs traffic to the IGW
What is a private subnet? - CORRECT ANSWER✔✔- a subnet in which the route table does
not direct traffic to the IGW
What is a VPN only subnet? - CORRECT ANSWER✔✔- a subnet in which the route table
does not direct traffic to the IGW, but does direct it to the VPG
What is the default VPC configuration? - CORRECT ANSWER✔✔- 1 public subnet in
every AZ in the region with a netmask of /20
route tables - CORRECT ANSWER✔✔- determine where traffic is directed,
the route table determines if the subnet is private/public
What is the local route? - CORRECT ANSWER✔✔- default route that allows
communication within the VPC, which cannot be removed or changed
Can you modify the main route table? - CORRECT ANSWER✔✔- yes, just not the local
route
Can you create and add custom route tables? - CORRECT ANSWER✔✔- yes
Can you replace the main route table? - CORRECT ANSWER✔✔- yes
What happens if you don't specify a route table for a subnet? - CORRECT ANSWER✔✔- it
automatically gets the main route table
