220-1201 Cloud Computing Concepts Practice Test 2 — 15 Questions

Question 1

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?

Accepted Answer

Software as a Service (SaaS). 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.

Answer

Infrastructure as a Service (IaaS)

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Platform as a Service (PaaS)

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Desktop as a Service (DaaS)

Question 2

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?

Accepted Answer

TLS for in transit and AES-256 for at rest. 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.

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SSL for at rest and IPsec for in transit

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VPN for in transit and hashing for at rest

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SSH tunneling for at rest and TLS for in transit

Question 3

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?

Accepted Answer

High availability. 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.

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Elasticity

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Scalability

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Fault tolerance

Question 4

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?

Accepted Answer

Deploy a local VDI broker or caching server at the remote office. 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.

Answer

Increase the bandwidth at the remote office

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Upgrade the cloud VDI servers to faster CPUs

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Switch to a different cloud provider

Question 5

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?

Accepted Answer

Hybrid cloud. 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.

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Public cloud

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Private cloud

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Community cloud

Question 6

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?

Accepted Answer

Rapid elasticity. 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.

Answer

Resource pooling

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Measured service

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On-demand self-service

Question 7

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?

Accepted Answer

Configuring encryption for data at rest and in transit. 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.

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Ensuring the PaaS provider has physical security at their data center

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Setting up a VPN between the on-premises network and the cloud

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Verifying that the provider uses a specific hypervisor

Question 8

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?

Accepted Answer

The PaaS provider updated the runtime environment, breaking compatibility. 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.

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The developer's local machine has a different operating system

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The application's database connection string is incorrect

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The cloud provider's physical server has a hardware fault

Question 9

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?

Accepted Answer

Software as a Service (SaaS). 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.

Answer

Infrastructure as a Service (IaaS)

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Platform as a Service (PaaS)

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Function as a Service (FaaS)

Question 10

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?

Accepted Answer

Multi-cloud. 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.

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Public cloud

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Hybrid cloud

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Community cloud

Question 11

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?

Accepted Answer

The internet connection between the sites has high latency or packet loss. 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.

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The cloud database is configured with the wrong DNS records

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The on-premises firewall is blocking the database port

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The cloud provider is performing maintenance on the database server

Question 12

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?

Accepted Answer

Infrastructure as a Service (IaaS). 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.

Answer

Software as a Service (SaaS)

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Platform as a Service (PaaS)

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Desktop as a Service (DaaS)

Question 13

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?

Accepted Answer

The virtual machine is under-provisioned for the current workload. 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.

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The user's internet connection is saturated

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The cloud provider is experiencing a regional outage

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The application's power supply is failing

Question 14

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?

Accepted Answer

Object storage. 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.

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Block storage

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File storage

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Cold storage

Question 15

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?

Accepted Answer

Configure the SaaS application to cache data locally on each user's device. SaaS applications are entirely dependent on internet connectivity. A local cached copy of the data can provide offline access. Other options like VPN or secondary internet are not practical for all employees, and a local server would require a different service model.

Answer

Set up a VPN to the cloud provider

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Install a local server running the same CRM software

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Purchase a secondary internet connection from a different provider