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Links to blog posts on the Network+ exam organized by topic similar to the Security+ blog link page.

Network+ N10-006 Practice Test Questions

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Full bank of at least 293* realistic multiple choice practice test questions with in-depth explanations to help you pass the Network+ exam the first time you take it. This set also includes several performance-based questions.

 Network+ Study Materials

30 Day Package 60 Day Package
Full bank of more than 293* N10-006 Network+ practice test questions.All questions include explanations so you'll know why the correct answers are correct, and why the incorrect answers are incorrect. Check Check
Performance-based QuestionsSeveral sets of performance-based questions. Question types include drag and drop, matching, and sorting type questions. See a demo here. checksm checksm

Bonus #1

Flashcard Set
  • 200 Network+ Flashcards to reinforce key testable concepts
  • View in random and non-random modes.
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Subnetting mini-tutorial that will help you answer two key question types
  • Identify how many hosts a subnet supports
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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. This way no matter how CompTIA words the questions, you'll be able to answer them correctly. Multiple quiz formats to let you use these questions based on the way you learn.
  • Learn mode. 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.
  • Test mode. In test mode, you can only see the correct answers and explanations after you complete the test.
This package allows you to go through the practice test questions in multiple ways based on how you learn best.
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Test your readiness with these quality questions

Understand the important important concepts using the explanations

 Network+ Study Materials

30 Day Package 60 Day Package
Full bank of more than 293* N10-006 Network+ practice test questions.All questions include explanations so you'll know why the correct answers are correct, and why the incorrect answers are incorrect. Check Check
Performance-based QuestionsSeveral sets of performance-based questions. Question types include drag and drop, matching, and sorting type questions. See a demo here. checksm checksm

Bonus #1

Flashcard Set
  • 200 Network+ Flashcards to reinforce key testable concepts
  • View in random and non-random modes.
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Subnetting mini-tutorial that will help you answer two key question types
  • Identify how many hosts a subnet supports
  • Identify valid IP addresses within a subnet
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Package includes several sets of performance-based questions. Two sets are simulated performance-based questions. Another set includes multiple performance-based questions using drag and drop capabilities. I love the way these new questions work. Check out a demo here.

You don't need to spend a fortune to get quality practice test questions

If you're like most people, you've already spent money on one or more Network+ books or courses. Now you need to ensure you understand the concepts and how they are tested. You can pay $100 or more for practice test questions, but you don't need to.

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 Network+ Study Materials

30 Day Package 60 Day Package
Full bank of more than 293* N10-006 Network+ practice test questions.All questions include explanations so you'll know why the correct answers are correct, and why the incorrect answers are incorrect. Check Check
Performance-based QuestionsSeveral sets of performance-based questions. Question types include drag and drop, matching, and sorting type questions. See a demo here. checksm checksm

Bonus #1

Flashcard Set
  • 200 Network+ Flashcards to reinforce key testable concepts
  • View in random and non-random modes.
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Bonus #2

Subnetting mini-tutorial that will help you answer two key question types
  • Identify how many hosts a subnet supports
  • Identify valid IP addresses within a subnet
checksm

Get the Network+ Study Materials Here

Beware of questions that do not include explanations - many people have identified errors in these and even when there aren't errors, these types of questions encourage you to memorize answers instead of understanding the underlying concepts. * Don't you hate those little asterisks. Normally they mean "forget what you just read, it's not really true." Not so here though. The bank starts with 293 multiple choice practice test questions, but I'm still adding to them. There will be more. ** CompTIA identified five domains of objectives for the CompTIA Network+ exam. They are:
  • 1.0 Networking Architecture
  • 2.0 Network Operations
  • 3.0 Network Security
  • 4.0 Troubleshooting
  • 5.0 Industry Standards, Practices, and Network Theory



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Recent Posts

  • ARP Poisoning Attacks

    ARP Poisoning Attacks

    ARP resolves the IP addresses of systems to their hardware addresses (also known as their media access control, or MAC addresses) and stores them in an area of memory known as the ARP cache. If you’re planning to take the Security+ exam, …
  • Configuring Virtual Servers

    Configuring Virtual Servers

    If you’re planning to take the Security+ exam, you should have a basic understanding of network design elements and components that includes configuring online virtual servers so that they can communicate with other virtual and physical systems on the network. See …
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    Error and exception handling routines are a part of input validation, and they ensure that an application can handle an error gracefully. If you’re planning to take the Security+ exam, you should have a basic understanding of secure coding concepts such as …
  • Setting Up Wireless Hot Spots

    Setting Up Wireless Hot Spots

    Many small business owners create wireless hot spots for their customers and you might be asked to help them configure one. If you’re planning to take the Security+ exam, you should have a basic understanding of troubleshooting security issues related to wireless …
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    Implementing Backup Policies

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  • Recognizing Malicious Links

    Recognizing Malicious Links

    If you’re planning to take the Security+ exam, you should have a basic understanding of various types of attacks. This includes recognizing an attack using malicious links, malicious code, or malicious attachments. For example, can you answer this question? Q. Marge reports that …
  • Discovering Wireless Networks

    Discovering Wireless Networks

    Wireless security has improved over the years, but wireless networks are still susceptible to vulnerabilities. If you’re planning to take the Security+ exam, you should have a basic understanding of securing a wireless network. For example, can you answer this question? …
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    Data policies assist in the protection of data and help prevent data leakage. If you’re planning to take the Security+ exam, you should have a good understanding of the appropriate controls to ensure data security such as implementing methods to sanitize drives. For example, …
  • Using XML-Based Standard

    Using XML-Based Standard

    If you’re planning to take the Security+ exam, you should have a good understanding of authentication services.This includes those using the XML-based standard to exchange authentication and authorization information between different parties. For example, can you answer this question? Q. Your …
  • Attack Using HTML Links

    Attack Using HTML Links

    If you’re planning to take the Security+ exam, you should have a good understanding of application security controls and techniques in preventing an attack that uses HTML links to trick a user into performing an action. For example, can you answer this …
  • Understanding Account Management

    Understanding Account Management

    If you’re planning to take the Security+ exam, you should have a basic understanding of account management that includes the access control methods used to control what the user can do. For example, can you answer this question? Q. Members of a …
  • Translating Public & Private IP Addresses

    Translating Public & Private IP Addresses

    If you’re planning on taking the Security+ exam, you should have a basic understanding of network design elements including how IP addresses are used. For example, can you answer this question? Q. Your organization has implemented a network design that allows …
  • Hosting Virtual Systems

    Hosting Virtual Systems

    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. …

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

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ARP Poisoning Attacks

Posted by on February 24 in Security+ | 0 comments

ARP resolves the IP addresses of systems to their hardware addresses (also known as their media access control, or MAC addresses) and stores them in an area of memory known as the ARP cache. If you’re planning to take the Security+ exam, you should have a basic understanding of various types of attacks such as ARP poisoning attacks.

For example, can you answer this question?

Q. You are troubleshooting an intermittent connectivity issue with a web server. After examining the logs, you identify repeated connection attempts from various IP addresses. You realize these connection attempts are overloading the server, preventing it from responding to other connections. Which of the following is MOST likely occurring?

A. DDoS attack

B. DoS attack

C. Smurf attack

D. Salting attack

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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Several common types of attacks launched against systems and networks. Some of them are generic, such as denial-of-service attacks, and others are very specific. This post covers ARP poisoning attacks.

ARP Poisoning Attacks

Address Resolution Protocol (ARP) poisoning is an attack that misleads computers or switches about the actual MAC address of a system. The MAC address is the physical address, or hardware address, assigned to the network interface card (NIC). ARP resolves the IP addresses of systems to their hardware address and stores the result in an area of memory known as the ARP cache.

TCP/IP uses the IP address to get a packet to a destination network. Once the packet arrives on the destination network, it uses the MAC address to get it to the correct host. ARP uses two primary messages:

  • ARP request. The ARP request broadcasts the IP address and essentially asks, “Who has this IP address?”
  • ARP reply. The computer with the IP address in the ARP request responds with its MAC address. The computer that sent the ARP request caches the MAC address for the IP. In many operating systems, all computers that hear the ARP reply also cache the MAC address.

A vulnerability with ARP is that it is very trusting. It will believe any ARP reply packet. Attackers can easily create ARP reply packets with spoofed or bogus MAC addresses, and poison the ARP cache on systems in the network. Two possible attacks from ARP poisoning are a man-in-the-middle attack and a DoS attack.

CompTIA Security+ Study Guide (SY0-401)

The 401 Version of the Study Guide is Now Available

SY0-401 Study GuideThe CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide is an update to the top-selling SY0-201 and SY0-301 study guides, which have helped thousands of readers pass the exam the first time they took it.

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Each of the eleven chapters presents topics in an easy to understand manner and includes real-world examples of security principles in action.

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If you plan to pursue any of the advanced security certifications, this guide will also help you lay a solid foundation of security knowledge. Learn this material, and you’ll be a step ahead for other exams. This SY0-401 study guide is for any IT or security professional interested in advancing in their field, and a must read for anyone striving to master the basics of IT security.

Kindle edition also available.

ARP Man-in-the-Middle Attacks

In a man-in-the-middle attack, an attacker can redirect network traffic, and in some cases insert malicious code. Consider the following figure. Normally, traffic from the user to the Internet will go through the switch directly to the router, as shown in the top of figure. However, after poisoning the ARP cache of the victim, traffic is redirected to the attacker.

ARP Poisoning

ARP poisoning used to redirect traffic

The victim’s ARP cache should include this entry to send data to the router:

192.168.1.1, 01-23-45-01-01-01

However, after poisoning the ARP cache, it includes this entry:

192.168.1.1, 01-23-45-66-66-66

The victim now sends all traffic destined for the router to the attacker. The attacker captures the data for analysis later. It also uses another method such as IP forwarding to send the traffic to the router so that the victim is unaware of the attack.

Security+ Practice Test Questions

SYO-401 Practice Test Questions Now Available

Over 440 realistic Security+ practice test questions

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

and why the incorrect answers are incorrect.

Pass the Security+ Exam

the First Time You Take It

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.
  • Test mode - randomized. View each of the questions in random order. 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.
  • Test mode - not randomized. View each of the questions in the same order. 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.
  • 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.

Get the full bank of Security+ Practice Test Questions Here

 SYO-401 Practice Test Questions Now Available


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

ARP DoS Attack

An attacker can also use ARP poisoning in a DoS attack. For example, an attacker can send an ARP reply with a bogus MAC address for the default gateway. The default gateway is the IP address of a router connection that provides a path out of the network. If all of the computers cache a bogus MAC address for the default gateway, none of them can reach it, and it stops all traffic out of the network.


Full Security+ Course

Full Security+ Course Now Available

Helping you Pass the First Time

Online access includes all of the content from the

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

  • Introduction
  • About the exam (including types of questions and strategies for performance-based questions)
  • 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)
  • Preparing for Business Continuity (full content from Chapter 9 of the study guide including the exam topic review and 20 practice test questions)
  • Understanding Cryptography (full content from Chapter 10 of the study guide including the exam topic review and 20 practice test questions)
  • Exploring Operational Security (full content from Chapter 11 of the study guide including the exam topic review and 20 practice test questions)
  • 100 question post-assessment exam
  • Security+ Acronyms

Get the Full Security+ Course Here

 Full Security+ Course Now Available


Test your readiness with these quality materials

Random 100-question tests

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.

22 Realistic Performance-based Questions

Two new sets of performance-based questions with a total of 22 questions. These new questions use a new testing engine that includes realistic drag and drop, matching, sorting, and fill in the blank questions.

Flashcard Set

  • 273 Security+ Flashcards to reinforce key testable concepts
  • 280 Security+ acronyms flashcards to help you master the required acronyms
  • 204 Security+ Remember This slides

Audio - SY0-401 Security+ Remember This Audio Files

Learn by Listening. Over one hour and 15 minutes of audio (MP3 downloads.)

Audio - SY0-401 Security+ Question and Answer Audio Files

Learn by Listening. Over three hours hour and 15 minutes of audio (MP3 downloads.)

Bonus #1

Audio from the end of chapter reviews from each of the chapters in the CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide. Over one hour and 15 minutes of additional audio.

Bonus #2

Subnetting mini-tutorial that will help you answer two key question types:
  • Identify how many hosts a subnet supports
  • Identify valid IP addresses within a subnet

Bonus #3 

Access the study materials for a total of 60 days because sometimes life happens.

Get the Full Security+ Course Here

Q. You are troubleshooting an intermittent connectivity issue with a web server. After examining the logs, you identify repeated connection attempts from various IP addresses. You realize these connection attempts are overloading the server, preventing it from responding to other connections. Which of the following is MOST likely occurring?

A. DDoS attack

B. DoS attack

C. Smurf attack

D. Salting attack

Answer is A. A distributed denial-of-service (DDoS) attack includes attacks from multiple systems with the goal of depleting the target’s resources and this scenario indicates multiple connection attempts from different IP addresses.

A DoS attack comes from a single system, and a SYN flood is an example of a DoS attack.

A smurf attack doesn’t attempt to connect to systems but instead sends pings.

Salting is a method used to prevent brute force attacks to discover passwords.

See Chapter 7 of the CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide for more information on advanced attacks.

You might also like to view the blog post about System Attacks Disrupting User’s Access.

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

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