OA Exams

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  • December 26, 2024

Question 21

What is a common use case for Platform as a Service (PaaS)?

a) Hosting websites
b) Developing and deploying applications
c) Managing user data
d) Monitoring network traffic

Correct Answer: b) Developing and deploying applications

Explanation: PaaS provides developers with a platform to develop, test, and deploy
applications without managing the underlying infrastructure.

Question 22

What is a typical function of a hypervisor in cloud computing?

a) To manage cloud security
b) To allocate CPU and memory resources to virtual machines
c) To store large amounts of data
d) To manage network encryption

Correct Answer: b) To allocate CPU and memory resources to virtual machines

Explanation: A hypervisor allocates CPU and memory resources to virtual machines,
allowing multiple VMs to run on a single physical server.

Question 23

What is the purpose of using an Availability Zone in cloud environments?

a) To store virtual machine backups
b) To ensure fault tolerance and high availability
c) To monitor data replication
d) To encrypt data in transit

Correct Answer: b) To ensure fault tolerance and high availability

Explanation: Availability Zones provide redundancy and fault tolerance by distributing
resources across different geographic locations.

Question 24

What type of storage is best for long-term archiving of data in the cloud?

a) File system storage
b) Object storage
c) Block storage
d) RAM

Correct Answer: b) Object storage

Explanation: Object storage is ideal for long-term data archiving, offering scalability and
durability for large amounts of unstructured data.

Question 25

What role does encryption play in cloud data storage?

a) It compresses data
b) It ensures data is unreadable without proper authorization
c) It reduces latency
d) It optimizes storage space

Correct Answer: b) It ensures data is unreadable without proper authorization

Explanation: Encryption secures data by converting it into a form that cannot be read
without the correct decryption key.

Question 26

Which protocol is commonly used to transfer files securely over a network in cloud
environments?
a) HTTP
b) FTP
c) SFTP
d) Telnet

Correct Answer: c) SFTP

Explanation: SFTP (Secure File Transfer Protocol) is used to transfer files securely over a
network by encrypting both the command and the data.

Question 27

What is the primary benefit of using auto-scaling in cloud environments?

a) It reduces the need for encryption
b) It provides fixed resource allocation
c) It automatically adjusts resources based on demand
d) It increases data replication

Correct Answer: c) It automatically adjusts resources based on demand

Explanation: Auto-scaling automatically adjusts computing resources to meet demand,
ensuring optimal performance and cost-efficiency.

Question 28

Which of the following best describes a hybrid cloud?

a) A cloud environment shared by multiple organizations
b) A mix of private and public cloud infrastructures
c) A completely private cloud environment
d) A cloud service with no redundancy

Correct Answer: b) A mix of private and public cloud infrastructures

Explanation: A hybrid cloud combines both private and public cloud environments to
provide greater flexibility and scalability.

Question 29

What is the primary function of a firewall in cloud environments?

a) To manage user access
b) To prevent unauthorized access to network resources
c) To increase storage space
d) To monitor CPU usage

Correct Answer: b) To prevent unauthorized access to network resources

Explanation: Firewalls act as a security barrier, filtering incoming and outgoing traffic to
protect cloud environments from unauthorized access.

Question 30

What is the main advantage of a cold site in disaster recovery?

a) It is always available with live data
b) It is less expensive to maintain than a hot site
c) It provides automatic failover during outages
d) It requires no additional hardware

Correct Answer: b) It is less expensive to maintain than a hot site

Explanation: A cold site is a backup facility that is cheaper to maintain but requires more
time to become operational in the event of a disaster.

Question 31

What is a potential risk of vendor lock-in in cloud services?

a) Higher latency
b) Difficulty in migrating to a different provider
c) Lower resource allocation
d) Reduced encryption standards

Correct Answer: b) Difficulty in migrating to a different provider

Explanation: Vendor lock-in occurs when an organization becomes dependent on a cloud
provider, making it difficult to switch to another provider.

Question 32

What is the key benefit of using disaster recovery as a service (DRaaS) in cloud
computing?

a) Reduced storage costs
b) Automated backup and failover solutions
c) Increased CPU performance
d) Lower encryption levels

Correct Answer: b) Automated backup and failover solutions

Explanation: DRaaS provides automated disaster recovery, allowing organizations to
quickly recover and failover during disasters with minimal disruption.

Question 33

What is the main advantage of using serverless computing in cloud environments?

a) It offers fixed resource allocation
b) It automatically scales resources as needed
c) It requires no internet connection
d) It increases data replication speed

Correct Answer: b) It automatically scales resources as needed

Explanation: Serverless computing dynamically scales resources based on the needs of
the application, eliminating the need for infrastructure management.

Question 34

What is a key feature of cloud load balancing?

a) It reduces storage requirements
b) It distributes network traffic across multiple servers
c) It increases encryption security
d) It improves memory allocation

Correct Answer: b) It distributes network traffic across multiple servers

Explanation: Cloud load balancing distributes incoming network traffic across multiple
servers to optimize resource use and prevent overloads.

Question 35

What is the purpose of a virtual private cloud (VPC)?

a) To encrypt data across multiple regions
b) To provide isolated cloud resources in a public cloud environment
c) To distribute content to users globally
d) To reduce storage requirements

Correct Answer: b) To provide isolated cloud resources in a public cloud environment

Explanation: A VPC provides an isolated environment within a public cloud, allowing for
greater control over resources and security.

Question 36

What is the key advantage of using snapshots in cloud environments?

a) They reduce CPU usage
b) They provide a point-in-time backup of data
c) They encrypt data during replication
d) They enhance network speed

Correct Answer: b) They provide a point-in-time backup of data

Explanation: Snapshots capture the state of a system or data at a specific point in time,
making it easier to restore in case of failure.

Question 37

What is the primary function of a cloud service broker?

a) To manage cloud resources for different organizations
b) To provide encryption services
c) To reduce network traffic
d) To offer disaster recovery solutions

Correct Answer: a) To manage cloud resources for different organizations

Explanation: A cloud service broker manages and negotiates cloud services between
customers and cloud providers, optimizing usage and costs.

Question 38

What type of cloud model allows resources to be shared by multiple organizations with
similar needs?

a) Public cloud
b) Private cloud
c) Community cloud
d) Hybrid cloud

Correct Answer: c) Community cloud

Explanation: A community cloud is shared by multiple organizations with similar
requirements, providing a collaborative cloud solution.

Question 39

What is the purpose of application containers in cloud environments?

a) To store large volumes of data
b) To isolate applications and improve portability
c) To encrypt application code
d) To manage network traffic

Correct Answer: b) To isolate applications and improve portability

Explanation: Containers isolate applications, allowing them to run consistently across
different environments, enhancing portability and efficiency.

Question 40

What is a potential downside of using cloud burst in hybrid cloud environments?

a) Increased network speed
b) Reduced flexibility
c) Security concerns when bursting into the public cloud
d) Decreased CPU performance

Correct Answer: c) Security concerns when bursting into the public cloud

Explanation: Cloud bursting may expose sensitive data to security risks when public
cloud resources are used to handle increased demand.

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