Question 181: What network devices should be included in a Layer 3 diagram?
A. Switches, routers, and firewalls
B. Routers, firewalls, and load balancers
C. Switches, firewalls, and load balancers
D. Bridges, switches, and hubs
Correct Answer: B. Routers, firewalls, and load balancers
Explanation: Layer 3 network diagrams capture all the network information available at Layer 3. All devices that operate at Layer 3 — routers, firewalls, load balancers, and so on — and how they are interconnected should be included in these diagrams.
Question 182: What popular network utility is used to troubleshoot DNS issues?
A. traceroute
B. dnslookup
C. nslookup
D. ping
Correct Answer: C. nslookup
Explanation: If DNS is malfunctioning for some reason, end-to-end connectivity is impacted. Network tools such as nslookup can be used to troubleshoot DNS functionality.
Question 183: Azure VMs and storage services fall under which of the following cloud computing models?
A. IaaS
B. PaaS
C. SaaS
D. All of the above
Correct Answer: A. IaaS
Explanation: Azure’s wide range of VM options, as well as its storage and networking services, fall under the IaaS cloud computing model. However, Azure also includes many PaaS and SaaS components.
Question 184: Which Azure management tool analyzes resources and provides recommendations to optimize deployments?
A. Azure Advisor
B. Azure Recommend
C. Azure Proactive
D. Azure Optimize
Correct Answer: A. Azure Advisor
Explanation: Azure Advisor scans resource configurations and recommends ways to improve availability, security, cost and performance for cloud deployments. It provides best practices to manage various resources, including VMs, availability sets and app gateways. Enterprises can access these management and monitoring capabilities through the Azure Portal, Azure Command-Line Interface or Advisor API.
Question 185: Which of the following Azure services helps enterprises deploy and manage a hybrid cloud architecture?
A. Azure Outposts
B. Azure Pack
C. Azure Stack
D. Azure Hybrid
Correct Answer: C. Azure Stack
Explanation: Azure Stack gives enterprises the ability to build, run, migrate and manage hybrid cloud apps that span from on-premises data centers to the Azure public cloud. It consists of hardware, which physically lives in the customer’s local data center, and software, which delivers Azure public cloud services. With Azure Stack, organizations gain more flexibility, especially for mission-critical applications that have strict regulatory requirements.
Question 186: Azure experienced a multiday outage in March 2020 that affected customers in Europe and the United Kingdom. Customers were unable to spin up VMs and suffered delays with Azure Pipeline. What caused the outage?
A. Human error
B. Capacity issues
C. Severe weather
D. Security breach
Correct Answer: B. Capacity issues
Explanation: In the midst of the COVID-19 pandemic, Azure systems experienced usage spikes due to the rapid influx of remote work and reliance on cloud-based, online collaboration services. This left customers in Europe and the United Kingdom unable to spin up VMs. In the incident post-mortem, Azure stated that VM capacity constraints caused the outage. Azure reported that throughout the incident, 6,136 organizations experienced delays.
Question 187: Azure Service Fabric is a distributed systems platform aimed primarily at:
A. Containers and microservices
B. Serverless architectures
C. Blockchain projects
D. All of the above
Correct Answer: A. Containers and microservices
Explanation: Azure Service Fabric helps an enterprise build, deploy and manage containers and microservices. It is typically used for distributed apps that require reliability and scaling capabilities. It powers a large number of services, including Azure Cosmos DB and Azure Event Hubs. The service supports clusters on premises and in Azure.
Question 188: Which Microsoft Azure cloud security tool can an enterprise use for key management?
A. Azure GuardDuty
B. Azure Lockdown
C. Azure Key Management
D. Azure Key Vault
Correct Answer: D. Azure Key Vault
Explanation: With Azure Key Vault, enterprises create and manage encryption keys. Administrators can store and control access to items such as tokens, passwords and API keys. Azure Key Vault also centrally stores application secrets, which increases user control over access and distribution.
Question 189: Microsoft Azure is the only cloud that offers a service-level agreement (SLA) for its API management service.
A. True
B. False
Correct Answer: B. False
Explanation: Microsoft was the first cloud provider to offer an SLA for its API management service. It guarantees its API Management service instances in the Consumption, Basic, Standard and Premium tiers will respond to requests at least 99.95% of the time. However, AWS and Google have since added SLAs for their API management platforms.
Amazon’s API Gateway SLA commits to a monthly uptime of at least 99.95%. Google’s SLA for Apigee commits to monthly uptime of at least 99% for the Standard tier, 99.9% for the Enterprise tier and 99.99% for the Enterprise Plus tier.
Question 190: Azure Blob storage offers how many storage tiers?
A. 3
B. 4
C. 5
D. 8
Correct Answer: B. 4
Explanation: Azure Blob, the platform’s object storage service, has four available storage tiers: Premium, Hot, Cool and Archive. Premium and Hot are meant to store frequently accessed data, with the former offering higher performance. Cool stores infrequently accessed data held for at least 30 days, and Archive has flexible latency requirements for rarely accessed data, which is stored for at least 180 days.