CompTIA A+ Certification Quiz Enhanced 21

What is a hypervisor primarily used for in a network environment?

• To detect and remove viruses from the network

• To create a virtual network environment where VMs can communicate

• To increase the physical security of the network devices

• To monitor network traffic and block unauthorized access

Answer explanation

A hypervisor is primarily used to create a virtual network environment where Virtual Machines (VMs) can communicate, allowing for efficient resource allocation and management.

What is the term used to describe the uncontrolled deployment of more and more VMs?

• VM patching

• VM sprawl

• VM escaping

• VM mapping

Answer explanation

VM sprawl is the term used to describe the uncontrolled deployment of more and more VMs, making it the correct choice in this context.

What major security risk does VM escaping pose?

• It allows a VM to operate independently of the hypervisor

• It permits the hypervisor to access data on the VM

• It enables malware to jump from one VM to another or to the host

• It causes the VM to consume excessive network bandwidth

Answer explanation

It enables malware to jump from one VM to another or to the host

Which of the following is NOT a function of ordinary antivirus software installed on a host in a virtualized environment?

• Detecting viruses on the host

• Scanning the virtual disks of a guest OS

• Causing performance problems

• Protecting against malware in the host environment

Answer explanation

Scanning the virtual disks of a guest OS is NOT a function of ordinary antivirus software in a virtualized environment. Antivirus software typically focuses on the host environment for malware protection.

What is a Type 2 hypervisor?

• A) A hypervisor that runs directly on the hardware.

• B) A hypervisor that runs on top of an existing operating system.

• C) A hypervisor used exclusively for data storage.

• D) A hypervisor that does not support multiple operating systems.

Answer explanation

A Type 2 hypervisor runs on top of an existing operating system, distinguishing it from Type 1 hypervisors that run directly on hardware.

You need to provision a virtualization workstation to run four guest OSs simultaneously. Each VM requires 2 GB system RAM. Is an 8 GB workstation sufficient to meet this requirement?

• A) Yes, because each VM uses exactly 2 GB.

• B) No, because additional RAM is needed for the host operating system.

• C) Yes, because the host system does not require any RAM.

• D) No, because each VM needs 4 GB of RAM.

Answer explanation

No, because additional RAM is needed for the host operating system.

What is the main security requirement of a virtualization workstation configured to operate VMs within a sandbox?

• A) The VMs must be able to access the host operating system.

• B) The VMs must be isolated from each other and the host.

• C) The VMs should have unrestricted internet access.

• D) The VMs need to share hardware resources with the host.

Answer explanation

The main security requirement for a virtualization workstation configured to operate VMs within a sandbox is that the VMs must be isolated from each other and the host, ensuring security and preventing unauthorized access.

What is a key characteristic of cloud computing that involves using data, databases, or applications over the Internet?

• High availability

• Scalability

• Cloud storage

• Cloud computing

Answer explanation

Cloud computing involves using data, databases, or applications over the Internet, making it the key characteristic mentioned in the question.

Which cloud characteristic ensures that the service experiences very little downtime?

• High availability

• Scalability

• Metered utilization

• Cloud storage

Answer explanation

High availability ensures that the service experiences very little downtime by providing redundancy and failover mechanisms to maintain continuous operation.

What does scalability in cloud computing imply?

• Ability to increase resources to manage more users without significant cost increase

• Guarantee of 99.999% service availability

• Metering resources based on usage

• Provisioning of services over the Internet

Answer explanation

Scalability in cloud computing implies the ability to increase resources to manage more users without significant cost increase.