Exam AWS Certified Cloud Practitioner topic 1 question 742 discussion

A is correct. B is incorrect, AZs are separated by up to 60 miles (https://docs.aws.amazon.com/whitepapers/latest/aws-fault-isolation-boundaries/availability-zones.html) C is correct. "All data transmitted between AWS Regions over the AWS global network is automatically encrypted at the physical layer before it leaves AWS secured facilities. All traffic between Availability Zones is encrypted." (https://docs.aws.amazon.com/prescriptive-guidance/latest/encryption-best-practices/general-encryption-best-practices.html" D is incorrect. "An Availability Zone is one or more discrete data centers with independent and redundant power infrastructure, networking, and connectivity in an AWS Region." (https://docs.aws.amazon.com/whitepapers/latest/aws-fault-isolation-boundaries/availability-zones.html)

la respuesta b es incorrecta ya que 100 millas son 160 km ya de entrada. a y c son las correctas

chatCPT says me AD :)

A. All Availability Zones in an AWS Region are interconnected with high-bandwidth, low-latency networking. C. All traffic between Availability Zones is encrypted. https://docs.aws.amazon.com/prescriptive-guidance/latest/encryption-best-practices/general-encryption-best-practices.html#:~:text=All%20data%20transmitted%20between%20AWS%20Regions%20over%20the%20AWS%20global%20network%20is%20automatically%20encrypted%20at%20the%20physical%20layer%20before%20it%20leaves%20AWS%20secured%20facilities.%20All%20traffic%20between%20Availability%20Zones%20is%20encrypted. "All data transmitted between AWS Regions over the AWS global network is automatically encrypted at the physical layer before it leaves AWS secured facilities. All traffic between Availability Zones is encrypted."

Agree with Kaps57 , AC

D is super wrong because if they share power, then there is no way an AZ can go down even if it loses power in that AZ since it can get power from other AZ. AWS clearly states " An Availability Zone (AZ) is one or more discrete data centers with redundant power, networking, and connectivity in an AWS Region. " discrete, we all know what it means. What they do have is "All AZs in an AWS Region are interconnected with high-bandwidth, low-latency networking, over fully redundant, dedicated metro fiber providing high-throughput, low-latency networking between AZs." Which is option A. I mean how did you guys even choose D with A? So what is the other answer, its C(Check the below link) Source: https://aws.amazon.com/about-aws/global-infrastructure/regions_az/

A. All Availability Zones in an AWS Region are interconnected with high-bandwidth, low-latency networking: Availability Zones within a region are connected through a high-bandwidth, low-latency network. This allows for efficient communication and data transfer between different Availability Zones within the same region. D. Availability Zones within an AWS Region share redundant power, networking, and connectivity: AWS designs Availability Zones to be isolated from each other to provide fault tolerance and high availability. However, within a specific region, the Availability Zones share redundant power, networking, and connectivity infrastructure. This redundancy ensures that if one Availability Zone experiences an issue, the workload can be seamlessly transferred to another Availability Zone within the same region.

A & D are correct

The correct letters are A and D. A is correct because all Availability Zones within an AWS Region are interconnected with high-bandwidth, low-latency networking. D is correct because Availability Zones within an AWS Region share redundant power, networking, and connectivity. C is incorrect because while traffic within an AWS Region is encrypted by default, traffic between Availability Zones is not encrypted at the physical layer. Instead, it is up to the user to enable encryption for traffic between Availability Zones.

The characteristics of Availability Zones are: A. All Availability Zones in an AWS Region are interconnected with high-bandwidth, low-latency networking. D. Availability Zones within an AWS Region share redundant power, networking, and connectivity. Option A is true. All Availability Zones in an AWS Region are interconnected with high-bandwidth, low-latency networking. This enables customers to design and deploy highly available and fault-tolerant applications across multiple Availability Zones. Option D is true. Availability Zones within an AWS Region share redundant power, networking, and connectivity, which increases their availability and fault tolerance.

All network traffic between AWS data centers is transparently encrypted at the physical layer

Assuming this definition hasn't changed then (B) can't be a correct choice: AZ’s are physically separated by a meaningful distance, many kilometers, from any other AZ, although all are within 100 km (60 miles) of each other.