A region that is comprised of 3 or more zones that are independent from each other to ensure that single failure events affect only a single zone.
Question 2
What VPC component makes it possible for an application, that is hosted on a virtual private cloud, to connect with an external database that is hosted on IBM Cloud classic bare metal servers?
Correct Answer: D
IBM Cloud Transit Gateway provisions and defines connections between resources on the IBM Cloud network, providing private interconnectivity between IBM Cloud data centers worldwide. IBM Cloud Transit Gateway provides a central hub for connectivity, making it easier to provision and manage your networks. With IBM Cloud Transit Gateway, you can create a single transit gateway or multiple transit gateways to connect IBM Cloud VPCs. You can also connect your IBM Cloud classic infrastructure to a transit gateway to provide seamless communication with classic infrastructure resources. Any new resource that you connect to a transit gateway is automatically made available to every other resource connected to it. All data remains within the private IBM Cloud backbone and is optimized for performance. IBM Cloud Transit Gateway supports local and global routing between VPCs and the IBM Cloud classic infrastructure. Connections to and from an IBM Cloud Transit Gateway on the IBM private network are not shown to the public internet. This arrangement reduces public egress and VPN costs and reduces security threats. IBM Cloud Transit Gateway is a fully redundant, fault-tolerant service with no single point of failure within IBM Cloud multizone regions. In-Correct Answer : The following offerings help you interconnect a VPC with an on-premises network VPN can securely connect your virtual private cloud to another private network. You can use VPN to set up an IPsec site-to-site tunnel between your VPC and your on-premises private network or another VPC IBM Cloud Direct Link Connect provides connectivity between your on-premises and IBM Cloud VPC networks through a supported service provider. A service provider connection is useful if your data center is in a physical location that can't reach a dedicated colocation facility, or if your data needs don't warrant a 5 Gbps+ connection. Connect service providers are often used to facilitate multicloud connectivity (public clouds from multiple vendors) through their network. Connect service providers offer layer 2 connectivity, layer 3 connectivity, or both. Work with your service provider to understand their offerings and requirements. IBM Cloud Direct Link Dedicated provides low-latency, high-throughput connections between IBM Cloud VPC networks direct to a service provider-managed WAN, or a client-managed cloud backbone. You can optimize egress traffic from your VPC network and reduce your egress costs. If you can't connect at an IBM Cloud data center, or don't need more than 5 Gbps of bandwidth on a Virtual Network Connection, you can use IBM Cloud Direct Link Connect to connect to IBM Cloud through a supported service provider. [Exam tips]: Remember IBM Cloud Transit Gateway used to connect internal VPCs(VPC-to-VPC). IBM Cloud provides connectivity from an external source into a customer's IBM Cloud private network. IBM Cloud Transit Gateway provides connectivity between resources within a customer's IBM Cloud private network.
Question 3
The client needs a support response time of under 2 hours to deploy on IBM Cloud. Which support plan is most cost effective?
Correct Answer: D
IBM Cloud offers three support plans - Basic, Advanced, Premium The Advanced IBM Cloud support plan would be most cost effective for Severity 1 issues. Initial response time for advanced IBM Cloud support plan : - Severity 1: Less than one hour - Severity 2: Less than two hours - Severity 3: Less than four hours - Severity 4: Less than eight hours Initial response time for Premium IBM Cloud support plan : - Severity 1: Less than 15 minutes - Severity 2: Less than one hour - Severity 3: Less than two hours - Severity 4: Less than four hours
Question 4
Which statement is true regarding serverless computing?
Correct Answer: B
Serverless computing is a cloud computing execution model that provisions computing resources on demand and offloads all responsibility for common infrastructure management tasks. They are auto-scalable so Its can handle extremely active traffic periods. Serverless computing does-not means there are no physical servers utilized, Of course there are servers, but we don't have to manage them, in background cloud provider manage( provisioning, scheduling, scaling, patching and more) for us, This gives developers more time to develop and optimize their front-end application code and business logic. And with serverless, customers never pay for idle capacity. They pay only for the resources required to run their applications, and only when those applications are running. Serverless is a polyglot environment, enabling developers to code in any language or framework - Java, Python, node.js - with which they're comfortable. Because serverless scales up and down on demand in response to workload, it offers significant cost savings for spiky workloads. But it does not offer the same savings for workloads characterized by predictable, steady or long-running processes; in these cases a traditional server environment might be simpler and more cost-effective. Serverless Implementations differ across service providers, and capabilities vary, including supported runtimes, authentication, scaling and monitoring. Serverless architectures are well-suited for event-driven, IOT and stream-processing workloads most notably open source Apache Kafka event streaming platform. Benefits: - Pay only for the time for our code will run. - Developer don't have to take care of servers or infrastructure, Its maintain by cloud provider, so they can focus more in development and business logic. - API Management & Integrated event sources. - Serverless scales up and down on demand in response to workload
Question 5
Which common mode of storage in the cloud is both highly distributed and resilient ?
Correct Answer: A
Block and file storage are common in traditional data centers but can often struggle with scale, performance and distributed characteristics of cloud. Thus, of the three, object storage has thus become the most common mode of storage in the cloud given that it is highly distributed (and thus resilient), it leverages commodity hardware, data can be accessed easily over HTTP, and scale is not only essentially limitless but performance scales linearly as the cluster grows.
