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CompTIA CV0-003 Sample Question Answers
Question # 1
A systems administrator is troubleshooting performance issues with a VDI environment. The
administrator determines the issue is GPU related and then increases the frame buffer on the virtual
machines. Testing confirms the issue is solved, and everything is now working correctly. Which of the
following should the administrator do NEXT?
A. Consult corporate policies to ensure the fix is allowed B. Conduct internal and external research based on the symptoms C. Document the solution and place it in a shared knowledge base D. Establish a plan of action to resolve the issue
Answer: C
Explanation: Documenting the solution and placing it in a shared knowledge base is what the administrator
should do next after troubleshooting performance issues with a VDI (Virtual Desktop Infrastructure)
environment, determining that the issue is GPU (Graphics Processing Unit) related, increasing the
frame buffer on the virtual machines, and testing that confirms that the issue is solved and
everything is now working correctly. Documenting the solution is a process of recording and
describing what was done to fix or resolve an issue, such as actions, steps, methods, etc., as well as
why and how it worked. Placing it in a shared knowledge base is a process of storing and organizing
documented solutions in a central location or repository that can be accessed and used by others.
Documenting the solution and placing it in a shared knowledge base can provide benefits such as:
Learning: Documenting the solution and placing it in a shared knowledge base can help to learn from
past experiences and improve skills and knowledge.
Sharing: Documenting the solution and placing it in a shared knowledge base can help to share
information and insights with others who may face similar issues or situations.
Reusing: Documenting the solution and placing it in a shared knowledge base can help to reuse
existing solutions for future issues or situations.
Question # 2
A disaster situation has occurred, and the entire team needs to be informed about the situation.
Which of the following documents will help the administrator find the details of the relevant team
members for escalation?
A. Chain of custody B. Root cause analysis C. Playbook D. Call tree
Answer: D
Explanation: A call tree is what will help the administrator find the details of the relevant team members for
escalation after a disaster situation has occurred and the entire team needs to be informed about the
situation. A call tree is a document or diagram that shows the hierarchy or sequence of
communication or notification among team members in case of an emergency or incident, such as a
disaster situation. A call tree can help to find the details of the relevant team members for escalation
by providing information such as:
Name: This indicates who is involved in the communication or notification process, such as team
members, managers, stakeholders, etc.
Role: This indicates what is their function or responsibility in the communication or notification
process, such as initiator, receiver, sender, etc.
Contact: This indicates how they can be reached or contacted in the communication or notification
process, such as phone number, email address, etc
Question # 3
An administrator recently provisioned a file server in the cloud. Based on financial considerations,
the administrator has a limited amount of disk space. Which of the following will help control the
amount of space that is being used?
A. Thick provisioning B. Software-defined storage C. User quotas D. Network file system
Answer: C Explanation: User quotas are what will help control the amount of space that is being used by a file server in the
cloud that has a limited amount of disk space due to financial considerations. User quotas are the
limits or restrictions that are imposed on the amount of space that each user can use or consume on
a file server or storage device. User quotas can help to control the amount of space that is being used
by:
Preventing or reducing wastage or overuse of space by users who may store unnecessary or
redundant files or data on the file server or storage device.
Ensuring fair and equal distribution or allocation of space among users who may have different needs
or demands for space on the file server or storage device.
Monitoring and managing the usage or consumption of space by users who may need to be notified
or alerted when they reach or exceed their quota on the file server or storage device.
Question # 4
A company wants to move its environment from on premises to the cloud without vendor lock-in.
Which of the following would BEST meet this requirement?
A. DBaaS B. SaaS C. IaaS D. PaaS
Answer: C
Explanation: IaaS (Infrastructure as a Service) is what would best meet the requirement of moving an
environment from on premises to the cloud without vendor lock-in. Vendor lock-in is a situation
where customers become dependent on or tied to a specific vendor or provider for their products or
services, and face difficulties
Question # 5
A systems administrator is deploying a new cloud application and needs to provision cloud services
with minimal effort. The administrator wants to reduce the tasks required for maintenance, such as
OS patching, VM and volume provisioning, and autoscaling configurations. Which of the following
would be the BEST option to deploy the new application?
A. A VM cluster B. Containers C. OS templates D. Serverless
Answer: D
Explanation: Serverless is what would be the best option to deploy a new cloud application and provision cloud
services with minimal effort while reducing the tasks required for maintenance such as OS patching,
VM and volume provisioning, and autoscaling configurations. Serverless is a cloud service model that
provides customers with a platform to run applications or functions without having to manage or
provision any underlying infrastructure or resources, such as servers, storage, network, OS, etc.
Serverless can provide benefits such as:
Minimal effort: Serverless can reduce the effort required to deploy a new cloud application and
provision cloud services by automating and abstracting away all the infrastructure or resource
management or provisioning tasks from customers, and allowing them to focus only on writing code
or logic for their applications or functions.
Reduced maintenance: Serverless can reduce the tasks required for maintenance by handling all the
infrastructure or resource maintenance tasks for customers, such as OS patching, VM and volume
provisioning, autoscaling configurations, etc., and ensuring that they are always up-to-date and
optimized.
Question # 6
A cloud administrator used a deployment script to recreate a number of servers hosted in a publiccloud
provider_ However, after the script completes, the administrator receives the following error
when attempting to connect to one of the servers Via SSH from the administrators workstation:
CHANGED. Which of the following IS the MOST likely cause of the issue?
A. The DNS records need to be updated B. The cloud provider assigned a new IP address to the server. C. The fingerprint on the server's RSA key is different D. The administrator has not copied the public key to the server.
Answer: C Explanation: This error indicates that the SSH client has detected a change in the server's RSA key, which is used
to authenticate the server and establish a secure connection. The SSH client stores the fingerprints of
the servers it has previously connected to in a file called known_hosts, which is usually located in the
~/.ssh directory. When the SSH client tries to connect to a server, it compares the fingerprint of the
server's RSA key with the one stored in the known_hosts file. If they match, the connection proceeds.
If they do not match, the SSH client warns the user of a possible man-in-the-middle attack or a host
key change, and aborts the connection. The most likely cause of this error is that the deployment script has recreated the server with a new
RSA key, which does not match the one stored in the known_hosts file. This can happen when a
server is reinstalled, cloned, or migrated. To resolve this error, the administrator needs to remove or
update the old fingerprint from the known_hosts file, and accept the new fingerprint when
connecting to the server again. Alternatively, the administrator can use a tool or service that can
synchronize or manage the RSA keys across multiple servers, such as AWS Key Management Service
(AWS KMS) 1, Azure Key Vault 2, or HashiCorp Vault 3.
Question # 7
A company is considering consolidating a number of physical machines into a virtual infrastructure
that will be located at its main office. The company has the following requirements:
High-performance VMs
More secure
Has system independence
Which of the following is the BEST platform for the company to use?
A. Type 1 hypervisor B. Type 2 hypervisor C. Software application virtualization D. Remote dedicated hosting
Answer: A
Explanation: A type 1 hypervisor is what would best meet the requirements of high-performance VMs (Virtual
Machines), more secure, and has system independence for a company that wants to move its
environment from on premises to the cloud without vendor lock-in. A hypervisor is a software or
hardware that allows multiple VMs to run on a single physical host or server. A hypervisor can be
classified into two types:
Type 1 hypervisor: This is a hypervisor that runs directly on the hardware or bare metal of the host or
server, without any underlying OS (Operating System). A type 1 hypervisor can provide benefits such
as:
High-performance: A type 1 hypervisor can provide high-performance by eliminating any overhead
or interference from an OS, and allowing direct access and control of the hardware resources by the
VMs.
More secure: A type 1 hypervisor can provide more security by reducing the attack surface or
exposure of the host or server, and isolating and protecting the VMs from each other and from the
hardware.
System independence: A type 1 hypervisor can provide system independence by allowing different
types of OSs to run on the VMs, regardless of the hardware or vendor of the host or server.
Type 2 hypervisor: This is a hypervisor that runs on top of an OS of the host or server, as a software
application or program. A type 2 hypervisor can provide benefits such as:
Ease of installation and use: A type 2 hypervisor can be easily installed and used as a software
application or program on an existing OS, without requiring any changes or modifications to the
hardware or configuration of the host or server.
Compatibility and portability: A type 2 hypervisor can be compatible and portable with different
types of hardware or devices that support the OS of the host or server, such as laptops, desktops,
smartphones, etc.
Question # 8
A cloud engineer needs to perform a database migration_ The database has a restricted SLA and
cannot be offline for more than ten minutes per month The database stores 800GB of data, and the
network bandwidth to the CSP is 100MBps. Which of the following is the BEST option to perform the
migration?
A. Copy the database to an external device and ship the device to the CSP B. Create a replica database, synchronize the data, and switch to the new instance. C. Utilize a third-patty tool to back up and restore the data to the new database D. use the database import/export method and copy the exported file.
Answer: B Explanation: The correct answer is B. Create a replica database, synchronize the data, and switch to the new
instance. This option is the best option to perform the migration because it can minimize the downtime and
data loss during the migration process. A replica database is a copy of the source database that is
kept in sync with the changes made to the original database. By creating a replica database in the
cloud, the cloud engineer can transfer the data incrementally and asynchronously, without affecting
the availability and performance of the source database. When the replica database is fully
synchronized with the source database, the cloud engineer can switch to the new instance by
updating the connection settings and redirecting the traffic. This can reduce the downtime to a few
minutes or seconds, depending on the complexity of the switch. Some of the tools and services that can help create a replica database and synchronize the data are
AWS Database Migration Service (AWS DMS) 1, Azure Database Migration Service 2, and Striim 3.
These tools and services can support various source and target databases, such as Oracle, MySQL,
PostgreSQL, SQL Server, MongoDB, etc. They can also provide features such as schema conversion,
data validation, monitoring, and security. The other options are not the best options to perform the migration because they can cause more
downtime and data loss than the replica database option. Copying the database to an external device and shipping the device to the CSP is a slow and risky
option that can take days or weeks to complete. It also exposes the data to physical damage or theft
during transit. Moreover, this option does not account for the changes made to the source database
after copying it to the device, which can result in data inconsistency and loss. Utilizing a third-party tool to back up and restore the data to the new database is a faster option than
shipping a device, but it still requires a significant amount of downtime and bandwidth. The source
database has to be offline or in read-only mode during the backup process, which can take hours or
days depending on the size of the data and the network speed. The restore process also requires
downtime and bandwidth, as well as compatibility checks and configuration adjustments. Additionally, this option does not account for the changes made to the source database after backing
it up, which can result in data inconsistency and loss. Using the database import/export method and copying the exported file is a similar option to using a
third-party tool, but it relies on native database features rather than external tools. The
import/export method involves exporting the data from the source database into a file format that
can be imported into the target database. The file has to be copied over to the target database and
then imported into it. This option also requires downtime and bandwidth during both export and
import processes, as well as compatibility checks and configuration adjustments. Furthermore, this
option does not account for the changes made to the source database after exporting it, which can
result in data inconsistency and loss.
Question # 9
Users of a public website that is hosted on a cloud platform are receiving a message indicating the
connection is not secure when landing on the website. The administrator has found that only a single
protocol is opened to the service and accessed through the URL https://www.comptiasite.com.
Which of the following would MOST likely resolve the issue?
A. Renewing the expired certificate B. Updating the web-server software C. Changing the crypto settings on the web server D. Upgrading the users' browser to the latest version
Answer: A
Explanation: Renewing the expired certificate is what would most likely resolve the issue of users receiving a
message indicating the connection is not secure when landing on a website that is hosted on a cloud
platform and accessed through https://www.comptiasite.com. A certificate is a digital document that
contains information such as identity, public key, expiration date, etc., that can be used to prove
one's identity and establish secure communication over a network. A certificate can expire when it
reaches its validity period and needs to be renewed or replaced. An expired certificate can cause
users to receive a message indicating the connection is not secure by indicating that the website's
identity or security cannot be verified or trusted. Renewing the expired certificate can resolve the
issue by extending its validity period and restoring its identity or security verification or trust.
Question # 10
A cloud administrator is assigned to establish a connection between the on-premises data center and
the new CSP infrastructure. The connection between the two locations must be secure at all times
and provide service for all users inside the organization. Low latency is also required to improve
performance during data transfer operations. Which of the following would BEST meet these
requirements?
A. A VPC peering configuration B. An IPSec tunnel C. An MPLS connection D. A point-to-site VPN
Answer: B
Explanation: An IPSec tunnel is what would best meet the requirements of establishing a connection between the
on-premises data center and the new CSP infrastructure that is secure at all times and provides
service for all users inside the organization with low latency. IPSec (Internet Protocol Security) is a
protocol that encrypts and secures network traffic over IP networks. IPSec tunnel is a mode of IPSec
that creates a virtual private network (VPN) tunnel between two endpoints, such as routers,
firewalls, gateways, etc., and encrypts and secures all traffic that passes through it. An IPSec tunnel
can meet the requirements by providing:
Security: An IPSec tunnel can protect network traffic from interception, modification, spoofing, etc.,
by using encryption, authentication, integrity, etc., mechanisms.
Service: An IPSec tunnel can provide service for all users inside the organization by allowing them to
access and use network resources or services on both ends of the tunnel, regardless of their physical
location.
Low latency: An IPSec tunnel can provide low latency by reducing the number of hops or devices that
network traffic has to pass through between the endpoints of the tunnel.
