Hosting Virtual Systems

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If you’re planning to take the Security+ exam, you should have a basic understanding of virtual systems. Virtualization allows you to host one or more virtual systems on a single virtual server.

See if you can you answer this question?

Q. You are preparing to deploy a new application on a virtual server. The virtual server hosts another server application that employees routinely access. Which of the following is the BEST method to use when deploying the new application?

A. Take a snapshot of the VM before deploying the new application.

B. Take a snapshot of the VM after deploying the new application.

C. Apply blacklisting techniques on the server for the new applications.

D. Back up the server after installing the new application.

More, do you know why the correct answer is correct and the incorrect answers are incorrect? The answer and explanation is available at the end of this post.

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CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide

  • Introduction
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  • 100 question pre-assessment exam
  • Mastering Security Basics (full content from Chapter 1 of the study guide including the exam topic review and 20 practice test questions)
  • Exploring Control Types and Methods (full content from Chapter 2 of the study guide including the exam topic review and 20 practice test questions)
  • Understanding Basic Network Security (full content from Chapter 3 of the study guide including the exam topic review and 20 practice test questions)
  • Securing Your Network (full content from Chapter 4 of the study guide including the exam topic review and 20 practice test questions)
  • Securing Hosts and Data (full content from Chapter 5 of the study guide including the exam topic review and 20 practice test questions)
  • Understanding Malware and Social Engineering (full content from Chapter 6 of the study guide including the exam topic review and 20 practice test questions)
  • Identifying Advanced Attacks (full content from Chapter 7 of the study guide including the exam topic review and 20 practice test questions)
  • Managing Risk (full content from Chapter 8 of the study guide including the exam topic review and 20 practice test questions)
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Random practice tests from the all of the practice test questions in the CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide. All questions include explanations so you'll know why the correct answers are correct, and why the incorrect answers are incorrect.

34 Simulated Performance-based Questions

Eight sets of performance-based questions with multiple questions in each set. These questions help you understand and prepare for performance based questions.

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Subnetting mini-tutorial that will help you answer two key question types:
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Virtualization is a technology that has been gaining a lot of popularity in recent years. It allows you to host one or more virtual systems, or virtual machines (VMs), on a single physical system. With today’s technologies, you can actually host an entire virtual network within a single physical system and organizations are increasingly using virtualization to reduce costs.

Snapshots

Snapshots provide you with a copy of the VM at a moment in time, which you can use as a backup. If the VM develops a problem, you can revert the image to the state it was in when you took the snapshot. You are still able to use the VM just as you normally would. However, after taking a snapshot, the hypervisor keeps a record of all changes to the VM.

Virtual systems

Administrators commonly take snapshots of systems prior to performing any risky operation. Risky operations include applying patches or updates, and installing new applications. Ideally, these operations do not cause any problems, but occasionally they do. By creating snapshots before these operations, administrators can easily revert the system to the previous state.

Sandboxing and Security Control Testing

A sandbox is an isolated area and is often used for testing programs. When using VMs, you can create them so that they are isolated in a sandbox environment. Sandboxing prevents the VMs from interacting with any other VMs, the physical host, or devices on the network. The term comes from a sandbox in a playground. Children can play in the sandbox where they are relatively safe (and parents can easily keep their eyes on them). Similarly, application developers can play in a virtual sandbox knowing that any changes they make will not affect anything outside the sandbox.

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Administrators and security professionals also use sandboxing to test various security controls before deploying them to a live production network. Virtualization provides a high level of flexibility when testing security controls because the environments are easy to re-create. For example, they can test the effectiveness of antivirus software to detect malware released within a sandbox. If the antivirus software doesn’t detect the malware and the malware causes problems, it is easy to revert the system to a previous state using a snapshot. Also, the isolation within the sandbox prevents the malware from spreading.

Similarly, virtualized sandboxes are useful for testing patches. For example, software vendors typically develop software updates and patches, but they need to test them in various environments before releasing them. They could create VMs for multiple operating systems. When they’re ready to test, they turn on one of the VMs, take a snapshot, and then apply and test the patch. If the patch causes a problem, they can easily revert the VM.


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All questions include explanations so you'll know why the correct answers are correct,

and why the incorrect answers are incorrect.

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Multiple quiz formats to let you use these questions based on the way you learn.
  • Learn mode - randomized. View each of the questions in random order. Learn mode allows you to keep selecting answers until you select the correct answer. Once you select the correct answer, you'll see the explanation. Click here to see how learn mode works.
  • Learn mode - not randomized. View each of the questions in the same order. Use this if you want to make sure that you see all of the questions. Learn mode allows you to keep selecting answers until you select the correct answer. Once you select the correct answer, you'll see the explanation. Click here to see how learn mode works.
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  • Test mode - 100 random questions. View 100 random questions from the full test bank similar to how the Security+ exam has a potential maximum of 100 multiple choice questions. In test mode, you can only see the correct answers and explanations after you complete the test. Click here to see how test mode works.

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INCLUDES QUESTIONS TO HELP YOU PREPARE

FOR THE NEW PERFORMANCE BASED QUESTIONS 

Bonus - Performance Based Questions

Additional Security+ questions to help you prepare for the new performance based questions. These are included with the full bank of Security+ practice test questions and are divided into different sections. For example, you'll have access to the following links:

- Performance Based Question - Set 1

You'll see a graphic explaining what you might be required to do on the actual exam to match different types of security to mobile devices and servers in a data center. You'll then have two questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 2

You'll see a graphic explaining what you might be required to do on the actual exam to match different types of attacks with the name of the attack type. You'll then have five questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 3

You'll see a graphic showing a network with computers and servers separated by a firewall. The firewall is used to control traffic between the computers and users using rules within an access control list (ACL).  You'll have three questions that test your knowledge and ability to correctly identify the relevant components of the rule. The incorrect answers and explanation provide you with insight into how to correctly answer this type of question on the actual exam.

- Performance Based Question - Set 4

You'll see a graphic explaining what you might be required to do on the actual exam related to what a forensic analyst would do during an investigation. You'll then have two questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 5

You'll see a graphic explaining what you might be required to do on the actual exam to match protocols and ports. You'll then have seven questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 6

You'll see a list of security controls along with a graphic showing devices and locations within an organization, along with instructions on what you might be required to do on the actual exam to match the controls with the devices and locations. You'll then have four questions that test your knowledge and ability to correctly answer the questions. This question also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 7

You'll see a list of authentication methods and authentication factors along with instructions on what you might be required to do on the actual exam to match the authentication methods with the authentication factors. You'll then have six questions that test your knowledge and ability to correctly answer the questions. This set also includes a link to a graphic showing the end solution for the overall performance based question simulation.

- Performance Based Question - Set 8

You'll see a graphic explaining what you might be required to do on the actual exam to match different types of attacks with the name of the attack type. You'll then have five questions that test your knowledge and ability to correctly answer the questions. This is similar to Set 2 but expands on the possibilities. The set also includes a link to a page showing the end solution for the overall performance based question simulation.

New - Performance Based Question - Set 9

New questions recently added using a different testing engine. See a demo here. This set includes drag and drop and matching questions on ports.

New - Performance Based Question - Set 10

A random set of 20 performance-based questions using drag and drop, matching, sorting, and fill in-the blank. This set includes performance-based questions on RAID.

Get the full bank of Security+ Practice Test Questions Here

Get the full bank of Security+ Practice Test Questions

Q. You are preparing to deploy a new application on a virtual server. The virtual server hosts another server application that employees routinely access. Which of the following is the BEST method to use when deploying the new application?

A. Take a snapshot of the VM before deploying the new application.

B. Take a snapshot of the VM after deploying the new application.

C. Apply blacklisting techniques on the server for the new applications.

D. Back up the server after installing the new application.

Answer is A. Taking a snapshot of the virtual machine (VM) before deploying it ensures that the VM can be reverted to the original configuration if the new application causes problems.

Taking a snapshot after the installation doesn’t allow you to revert the image.

Blacklisting prevents an application from running, so it isn’t appropriate for a new application deployed on a server.

Backing up the server might be appropriate before installing the new application but not after.

See Chapter 5 of the CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide for more information on securing hosts and data.

You may also like to view the blog post about Container Virtualization.

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CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide

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