A user has created a VPC with public and private subnets using the VPC Wizard. The VPC has CIDR
20.0.0.0/16. The private subnet uses CIDR 20.0.0.0/24. Which of the below mentioned entries are required in
the main route table to allow the instances in VPC to communicate with each other?
A.
Destination : 20.0.0.0/24 and Target : VPC
B.
Destination : 20.0.0.0/16 and Target : ALL
C.
Destination : 20.0.0.0/0 and Target : ALL
D.
Destination : 20.0.0.0/24 and Target : Local
Answer should be B
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I agree with you kelvin. It will be application if the instances launched in the private subnet wants to communicate with each other then we have to write this rule in SG.
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D
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d
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Use process of elimination.
D.
Destination : 20.0.0.0/24 and Target : Local
The other route entries are incorrect for private subnets.
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D is correct
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Sadly, the answers are not correct. but by process of elimination, the one with Target: Local is for the VPC.
formatted right it would be 20.0.0.0/16 Target : Local. because the /16 is for the VPC. go look it up, all subnets, private and public routes will all have it setup the same. route for VPC, not by subnet.
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Correct!
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Scenario2.html
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I think its non of the above. Correct formation show be VPC CIDR ->(20.0.0.0/16) local if you want everyone to be able to talk to each other in the VPC
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Exactly what ‘jason’ said above.
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Destination : 20.0.0.0/16 and Target : Local
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According pass4sure correct answer is A
Explanation:
A user can create a subnet with VPC and launch instances inside that subnet. If the user has created a public private subnet, the instances in the public subnet can receive inbound traffic directly from the Internet, whereas the instances in the private subnet cannot. If these subnets are created with Wizard, AWS will create two route tables and attach to the subnets. The main route table will have the entry “Destination: 20.0.0.0/24 and Target: Local”, which allows all instances in the VPC to communicate with each other.
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http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Scenario2.html
Main Route Table
The first entry is the default entry for local routing in the VPC; this entry enables the instances in the VPC to communicate with each other.
Destination Target
10.0.0.0/16 local
So answer for this questions is Destination : 20.0.0.0/24 and Target : Local
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oops I meant Destination : 20.0.0.0/16 and Target : Local
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Correct answer is A
Explanation:
A user can create a subnet with VPC and launch instances inside that subnet. If the user has created a public private subnet, the instances in the public subnet can receive inbound traffic directly from the Internet, whereas the instances in the private subnet cannot. If these subnets are created with Wizard, AWS will create two route tables and attach to the subnets. The main route table will have the entry “Destination: 20.0.0.0/24 and Target: Local”, which allows all instances in the VPC to communicate with each other.
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Correct answer is A
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Correct Answer is D
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Scenario2.html
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Destination : 20.0.0.0/16 and Target : Local
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Destination : 20.0.0.0/16 and Target : Local
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