A.The user's browser cache
B.The cloud provider's service status
D.The user's account permissions
AnswerC
If DNS is blocked or misconfigured in the office, the browser cannot resolve the CRM's IP address, even though outbound HTTPS is allowed.
30 questions · Cloud Computing Concepts topic · All types, answers revealed
If DNS is blocked or misconfigured in the office, the browser cannot resolve the CRM's IP address, even though outbound HTTPS is allowed.
A cloud architect is designing a solution where a company's web application automatically scales out to handle increased traffic and scales in during low demand. The application runs on multiple virtual machines. Which cloud characteristic is being utilized?
Rapid elasticity allows resources to be provisioned and released automatically to match demand, as described in the scenario.
Why this answer
Rapid elasticity is the ability to automatically scale resources up or down based on demand. This is a key characteristic of cloud computing. Other options like measured service or resource pooling are related but do not directly describe auto-scaling.
A company is migrating its on-premises database to a cloud PaaS solution. The database currently contains sensitive customer information. Which of the following is the most important security consideration for the migration?
Encryption protects data from being read if intercepted during transfer or if storage is compromised, which is essential for sensitive data.
Why this answer
When moving sensitive data to the cloud, encryption at rest and in transit is critical to protect against unauthorized access. While access controls and compliance are important, encryption is a fundamental requirement. The shared responsibility model means the provider secures the infrastructure, but the customer must secure the data.
A company uses a cloud-based virtual desktop infrastructure (VDI) solution. Users report that logging in takes 5 minutes during peak hours. The IT team notices that the cloud provider's resource utilization is at 95%. Which action would best resolve this issue?
Scaling up gives each VM more resources, reducing contention and speeding up logins.
Why this answer
This question addresses resource contention in cloud VDI. High utilization (95%) indicates the provider's resources are saturated, causing slow logins. Scaling up (vertical scaling) by increasing the VM size provides more CPU/RAM per user, improving performance.
Scaling out adds more VMs but doesn't address the root cause of resource saturation on existing VMs. Migrating to a different model or disabling auto-scaling could worsen the issue.
A user reports that their cloud-based file synchronization service stopped updating files after a recent OS update. The technician verifies the service is running and the internet connection is active. What should the technician check next?
Expired tokens or session timeouts are common after OS updates; re-authenticating usually resolves the issue.
Why this answer
Cloud file sync issues often stem from authentication problems, such as expired credentials or session tokens. Since the service is running and connectivity is fine, the most likely cause is that the user's login token expired and needs re-authentication. Checking the sync logs would reveal the authentication failure.
A company uses a public cloud provider for compute resources. To reduce costs, they want to use unused capacity at a lower price but accept that the instance may be terminated with short notice. Which pricing model should they choose?
Spot instances use spare capacity at a lower cost but can be reclaimed by the provider at any time.
Why this answer
This question tests knowledge of advanced cloud pricing models. A spot instance (or preemptible VM) uses unused cloud capacity at a steep discount but can be terminated when the provider needs the resources back. On-demand is full price, reserved is for long-term commitments, and dedicated hosts are for isolation, not cost savings with termination risk.
A user complains that their cloud-hosted virtual desktop is slow to open applications and frequently disconnects. They are using a satellite internet connection. Which cloud characteristic is most likely being impacted?
Latency is the delay in data transmission, which is increased by satellite connections and causes slow performance.
Why this answer
This scenario tests understanding of cloud computing characteristics, specifically latency. Slow application opening and disconnections are classic symptoms of high latency, which is often caused by the physical distance data must travel over a satellite connection. The other options (elasticity, scalability, high availability) are cloud features that do not directly address network delay.
A company uses a PaaS provider to deploy a custom web application. After an update, the application fails to start. The developer checks the code and finds no errors. What is the most likely cause of the failure?
PaaS providers manage the runtime; an update can change versions or dependencies, causing the application to fail if not compatible.
Why this answer
In PaaS, the provider manages the runtime environment, including dependencies and configuration. An update may have changed the underlying platform (e.g., runtime version, library) that the application relies on, causing incompatibility. The developer's code is fine, so the issue is environmental.
A user receives an error when trying to access a cloud application: 'This application is not available in your region.' The user is traveling abroad. Which cloud concept is most likely causing this restriction?
Geolocation is used to determine the user's region and enforce access policies based on location.
Why this answer
This scenario tests understanding of geolocation restrictions in cloud services. Many cloud applications use geolocation to enforce licensing, compliance, or content restrictions based on the user's physical location. High availability, multi-tenancy, and resource pooling are unrelated to region-based access controls.
A technician is configuring a cloud-based virtual machine for a developer who needs to run a custom application that requires 16 GB of RAM and 4 vCPUs. The technician selects an instance type that meets these specs. After launching, the developer complains the application runs slowly. What is the most likely cause?
In a public cloud, multiple VMs share physical hardware; if neighbors are busy, your VM may not get full resources, causing slowdowns.
Why this answer
Cloud VMs often experience resource contention due to noisy neighbors in multi-tenant environments. Even if the instance type meets specs, performance can degrade if other tenants on the same physical host consume resources. The technician should check if the instance is on a shared host and consider dedicated instances.
A technician is configuring a cloud-based virtual machine for a web server. The VM needs to handle traffic spikes automatically without manual intervention. Which cloud characteristic should be enabled?
Elasticity enables automatic scaling of resources to meet changing demand, perfect for traffic spikes.
Why this answer
This scenario tests the concept of elasticity in cloud computing. Elasticity allows resources to automatically scale up or down based on demand, which is ideal for handling traffic spikes. Scalability is a broader term that can include manual scaling, while high availability and fault tolerance focus on uptime, not automatic adjustment to load changes.
A company uses a public cloud IaaS provider. The security team discovers that a virtual machine's data disk was accidentally deleted by an administrator. They need to recover the data from a snapshot taken 24 hours ago. The snapshot is stored in the same cloud region. What is the most efficient recovery method?
This method recovers only the lost data disk without affecting the running VM, minimizing downtime and resource waste.
Why this answer
Most cloud IaaS providers allow creating a new volume from a snapshot, which can then be attached to the existing VM. This is faster than restoring the entire VM from a full image. The technician should create a new disk from the snapshot and attach it, then copy the data to the original disk if needed.
A technician is deploying a cloud-based application that requires a specific operating system and database. The company wants to avoid managing the underlying OS and patches. Which cloud service model should be used?
PaaS provides a managed platform with OS and database, so the company doesn't need to handle patches.
Why this answer
This question tests the distinction between PaaS and other service models. Platform as a Service (PaaS) provides a managed platform including OS, runtime, and database, allowing the customer to focus on deploying their application without patching the OS. IaaS gives full control but requires OS management, SaaS is a finished application, and DaaS is for virtual desktops.
A small business wants to migrate its email and document collaboration to the cloud but must keep sensitive financial records on local servers due to regulatory requirements. Which cloud deployment model should they choose?
Hybrid cloud allows mixing public cloud services with on-premises infrastructure, meeting both collaboration needs and regulatory compliance.
Why this answer
This question covers cloud deployment models. A hybrid cloud combines public cloud services (for email/collaboration) with private or on-premises infrastructure (for sensitive data). Public cloud alone would violate regulations, community cloud is for shared industry needs, and private cloud is entirely on-premises, missing the benefits of public cloud for non-sensitive workloads.
A marketing department wants to access a shared calendar and document editing tools without installing any software on their local machines. Which cloud service model would best meet this requirement?
SaaS delivers fully managed applications over the internet, accessed via a web browser, matching the need for calendar and document tools.
Why this answer
This question tests understanding of cloud service models. Software as a Service (SaaS) provides ready-to-use applications over the internet, eliminating the need for local installation. The scenario specifically requires access to calendar and document editing tools, which are typical SaaS offerings.
A company uses a cloud-based customer relationship management (CRM) application. The vendor handles all updates, security patches, and infrastructure maintenance. Which cloud service model does this represent?
SaaS delivers a complete application managed by the vendor, matching the CRM scenario.
Why this answer
This scenario describes Software as a Service (SaaS), where the provider delivers a complete application over the internet. The user only needs a web browser and does not manage the underlying OS, servers, or updates. IaaS would give virtual machines, PaaS would provide a development platform, and DaaS would deliver virtual desktops.
A technician is setting up a cloud-based application that must handle unpredictable spikes in user traffic. The application should automatically add more virtual servers during peak times and remove them when traffic decreases. Which cloud concept is this?
Elasticity refers to the automatic provisioning and de-provisioning of resources to match current demand, exactly as described.
Why this answer
Elasticity is the ability to automatically scale resources up and down in response to demand. This is a key benefit of cloud computing, allowing cost efficiency while handling spikes. Scalability is a broader term that includes manual scaling, but elasticity specifically implies automatic, dynamic adjustment.
A small business owner wants to access their accounting software from any device, including a tablet and a home computer, without installing the software locally. Which cloud service model should the technician recommend?
SaaS delivers fully functional applications over the internet, accessible from any device with a browser, which is exactly what the business needs.
Why this answer
SaaS (Software as a Service) delivers applications over the internet, accessible via a web browser without local installation. This matches the requirement of accessing accounting software from any device without installation. PaaS and IaaS provide platforms or infrastructure, not end-user applications.
A technician is migrating a database from an on-premises server to a cloud platform. The database contains sensitive customer information. The company requires that data be encrypted both at rest and in transit. Which combination of technologies should the technician implement?
TLS secures data during transmission, and AES-256 (via cloud provider encryption) secures stored data, meeting both requirements.
Why this answer
For data in transit, TLS/SSL encrypts communication between the application and the database. For data at rest, the cloud provider's encryption feature (e.g., AWS EBS encryption or Azure SQL TDE) encrypts the stored data. AES-256 is a common encryption standard for at-rest data, but it must be implemented by the provider's service.
A company is adopting a cloud-first strategy and wants to minimize vendor lock-in. They plan to use multiple cloud providers for different workloads. Which cloud deployment model does this describe?
Multi-cloud uses services from multiple public cloud providers, reducing dependency on any single vendor.
Why this answer
A multi-cloud strategy involves using services from multiple cloud providers to avoid dependence on a single vendor. This is distinct from a hybrid cloud, which combines public and private clouds. Public cloud uses one provider, and community cloud is shared among organizations.
A technician is troubleshooting a hybrid cloud environment where an on-premises application needs to access a cloud-based database. The connection is intermittent and slow. The technician checks the local network and finds no issues. Which of the following is the most likely cause?
High latency or packet loss on the WAN link can cause intermittent slowdowns and timeouts, even with a healthy local network.
Why this answer
In a hybrid cloud, latency and bandwidth issues often stem from the internet connection between the on-premises site and the cloud. Even if the local network is fine, the WAN link may be congested or have high latency. DNS or firewall issues would typically cause complete failures, not intermittent slowness.
A small business wants to move its on-premises file server to the cloud to reduce hardware maintenance costs. They need full control over the operating system and applications running on the server. Which cloud service model should they choose?
IaaS provides virtualized hardware where the user has full control over the OS, storage, and applications.
Why this answer
This scenario requires the customer to manage the OS and applications, which is characteristic of IaaS. IaaS provides virtual machines where the user controls the OS and installed software, while the provider manages the physical hardware.
A user reports that a cloud-hosted application is running very slowly during peak hours. The application is hosted on an IaaS platform with a single virtual machine. Which of the following is the most likely cause?
Under-provisioning means the VM lacks enough CPU or RAM to handle peak demand, causing slowdowns.
Why this answer
In IaaS, performance issues during peak hours often indicate that the virtual machine lacks sufficient resources (CPU, RAM) to handle increased load. Scaling up the VM or adding more instances can resolve this. Other factors like local internet or power are less likely to be the primary cause.
A user reports that their cloud-based application is running slowly, and the IT team discovers that the application is hosted in a different geographic region than the user. Which cloud concept is most directly affecting performance?
Latency is the delay in data transmission, which increases with geographic distance between user and cloud server.
Why this answer
This scenario tests understanding of latency in a global cloud context. When an application is hosted far from the user, the physical distance increases network latency, causing slow performance. Bandwidth could be a factor but is not directly tied to geographic distance, while elasticity and fault tolerance are unrelated to the location of the host.
A technician is configuring a cloud-based backup solution for a client's critical data. The client requires that data be stored in a way that allows quick recovery of individual files from any point in the last 30 days. Which cloud storage model is most appropriate?
Object storage stores data as objects with metadata and supports versioning, allowing recovery of previous file versions.
Why this answer
Object storage is ideal for storing and retrieving individual files with versioning capabilities, enabling point-in-time recovery. It is scalable and commonly used for backup. Block storage is for raw volumes, and file storage is for shared file systems, but object storage offers the best granularity for file-level recovery over time.
A company uses a cloud storage service for backup. The technician needs to ensure that if the primary cloud region goes down, the backups are still accessible from another geographic location. Which cloud characteristic should be configured?
High availability, especially when implemented across multiple regions, ensures service continuity even if one region fails.
Why this answer
High availability across regions is achieved through redundancy, such as replicating data to multiple geographic locations. This ensures that if one region fails, another can serve the data. Scalability, elasticity, and fault tolerance at a single site do not provide geographic redundancy.
A company's cloud-based virtual desktop infrastructure (VDI) is experiencing slow logins for users in a remote office. The network latency between the remote office and the cloud data center is 150 ms. What is the most effective solution to improve login performance?
A local broker can cache login profiles and reduce the need for frequent round trips to the cloud, significantly improving login speed.
Why this answer
High latency significantly impacts VDI performance, especially during login when many resources are loaded. Deploying a local VDI broker or caching server at the remote office reduces round-trip time. Alternatively, using a CDN or WAN optimization can help, but a local broker is most effective for VDI.
A user reports that their cloud storage files are not syncing to their laptop. The internet connection is working, and other cloud services are accessible. Which of the following is the most likely cause?
If the sync client is not running, files won't sync even with a working internet connection.
Why this answer
This question tests troubleshooting cloud synchronization issues. A common cause is the client application being stopped or crashed, which prevents syncing despite a working internet connection. Account suspension would block access entirely, firewall rules would affect other services too, and server downtime would impact all users, not just one.
A company is migrating its on-premises email server to a cloud service. Employees must retain all existing emails and folders. Which cloud deployment model best fits this requirement?
Hybrid cloud allows the company to keep some data on-premises while moving other data to the cloud, enabling a smooth migration with full data retention.
Why this answer
A hybrid cloud deployment combines on-premises infrastructure with public cloud services, allowing data migration while maintaining local access during the transition. This ensures existing emails can be retained and synchronized. A public-only or private-only model would not support the migration seamlessly.
A company uses a SaaS CRM application and wants to ensure that if the internet connection fails, employees can still access customer data. Which of the following is the best solution?
Many SaaS applications offer offline caching, allowing users to access recently synced data without an internet connection.
Ready to test yourself?
Try a timed practice session using only Cloud Computing Concepts questions.