AWS Certified Advanced Networking ? Specialty
QUESTION: 1
Considering your knowledge of both the OSI and TCP/IP models - select the following
statement which you consider to NOT be true.

A. The TCP/IP Application layer maps to 2 of the OSI Layers
B. The top layer in the OSI model is named the Application layer
C. The TCP/IP Application layer maps to 3 of the OSI Layers
D. The top layer in the TCP/IP model is named the Application layer

Answer(s): A
Explanation:
The OSI model is a 7 layered model. The TCP/IP model is a 4 layered model. The top layer in
both models is called the Application layer. The TCP/IP Application layer maps to the top 3 OSI
layers (Application, Presentation, and Session layers).
Reference:
https://en.wikipedia.org/wiki/OSI_model
QUESTION: 2
From the following options, select the answer that correctly describes the implementation of the
HTTP protocol

A. By definition, HTTP is a connection-less oriented protocol and therefore utilizes TCP
B. By definition, HTTP is a connection orientated protocol and therefore utilizes TCP
C. By definition, HTTP is a connection-less oriented protocol and therefore utilizes UDP
D. By definition, HTTP can be configured to be either connection or connection-less oriented ?
by specifying the appropriate HTTP header.

Answer(s): B
Explanation:
HTTP is a connection orientated protocol and therefore utilizes TCP
Reference:
https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol
QUESTION: 3
You have just provisioned a new VPC a with a CIDR block of 172.16.12.0/24. The entire CIDR
block is fully utilized by subdividing it into 6 subnets, we wil refer to these as Subnet1 through to
Subnet6.
The first 2 subnets (Subnet1 and Subnet2) are the same size. The last 4 subnets (Subnet3,
Subnet4, Subnet5, Subnet6) are also the same size. Subnet5 is half the size of Subnet2. The
address space as occupied by the first two subnets is contiguous, as is the address space
occupied by the last 4 subnets. Within Subnet3 AWS reserves the address 172.16.12.129 for
the VPC router. Select the correct IP address reserved by AWS for DNS in the Subnet2.

A. 172.16.64.1
B. 172.16.64.65
C. 172.16.12.66
D. 172.16.12.64

Answer(s): C

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