Security Using Door Access System

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A door access system should allow personnel to exit without any form of authentication, especially if the systems lose power such as during a fire. If you’re planning to take the Security+ exam you should have a basic understanding of physical security and environmental controls including door access systems.

For example, can you answer this question?

Q. You need to secure access to a data center. Which of the following choices provides the BEST physical security to meet this need? (Select THREE.)

A. Biometrics

B. Cable locks

C. CCTV

D. Mantrap

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.

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

Understanding Door Access System

A door access system is one that only opens after some access control mechanism is used. Some common door access controls are cipher locks, proximity cards, and biometrics.

When implementing door access systems, it’s important to limit the number of entry and exit points. As an example, if a data center has only one entrance and exit, it is much easier to monitor this single access point. You can control it with door locks, video surveillance, and guards. On the other hand, if the data center has two entry/exit points, you need another set of controls to control access in both places.

Security Using Door Access System

Another important consideration with door access systems is related to personnel safety and fire. In the event of a fire, door access systems should allow personnel to exit the building without any form of authentication.

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.

CompTIA Authorized Quality Content (CAQC)After a comprehensive review by ProCert Labs, the SY0-401 version has been certified as CompTIA Approved Quality Content (CAQC) and covers every aspect of the SY0-401 exam.

It includes the same elements readers raved about in the previous two versions.

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

You’ll understand the important and relevant security topics for the Security+ exam, without being overloaded with unnecessary details. Additionally, each chapter includes a comprehensive review section to help you focus on what’s important.


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Over 400 realistic practice test questions with in-depth explanations will help you test your comprehension and readiness for the exam. The book includes:

  • A 100 question pre-test
  • A 100 question post-test
  • Practice test questions at the end of every chapter.

Each practice test question includes a detailed explanation to help you understand the content and the reasoning behind the question. You’ll be ready to take and pass the exam the first time you take it.

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.

Securing Door Access with Proximity Cards

Proximity cards are small credit card-sized cards that activate when they are in close proximity to a card reader. Many organizations use these for access points, such as the entry to a building or the entry to a controlled area within a building. The door uses an electronic lock that only unlocks when the user passes the proximity card in front of a card reader.

You’ve probably seen proximity card readers implemented with credit card readers. Many self-serve gasoline stations and fast-food restaurants use them. Instead of swiping your credit card through a magnetic reader, you simply pass it in front of the reader (in close proximity to the reader), and the reader extracts your credit card’s information.

Get Certified Get Ahead

It’s intriguing how this is accomplished. The card doesn’t require its own power source. Instead, the electronics in the card include a capacitor and a coil that can accept a charge from the proximity card reader. When you pass the card close to the reader, the reader excites the coil and stores a charge in the capacitor. Once charged, the card transmits the information to the reader using a radio frequency.

When used with door access systems, the proximity card can send just a simple signal to unlock the door. Some systems include details on the user and record when the user enters or exits the area. When used this way, it’s common to combine the proximity card reader with a key pad requiring the user to enter a personal identification number (PIN). This identifies and authenticates the user with multifactor authentication. The user has something (the proximity card) and knows something (a PIN).

Many organizations use proximity cards with turnstiles to provide access for a single person at a time. These are the same type of turnstiles used as entry gates in subways, stadiums, and amusement parks.

Remember this

Proximity cards are credit card-sized access cards. Users pass the card near a proximity card reader and the card reader then reads data on the card. Some access control points use proximity cards with PINs for authentication.

As a side note, one of the worrisome issues related to these cards is that attackers can build or purchase systems that can read your credit cards if they operate as proximity cards. The attacker places the reader in a purse or bag and positions it close to your wallet or purse, perhaps by standing behind you in the elevator, a store, or a line. The electronics on the card would charge and then transmit without your knowledge. The collected information can be used later to make unauthorized purchases.

About the only way to prevent this is to wrap your credit cards in some type of shielding, like aluminum foil. There are companies that sell credit card shield protectors for as much as $29.95. However, you can make your own shield with a couple of well-placed pieces of aluminum foil in your wallet or purse.

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.

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Securing Door Access with Biometrics

It’s also possible to use biometric methods as an access control system. One of the benefits is that some biometric methods provide both identification and authentication. When connected to a back-end database, these systems can easily record the activity, such as who entered the area and when.

For example, you can install a retina scanner at the entrance to a secure server room. When individuals want to enter, the biometric scanner identifies and authenticates them. It’s important to ensure you use a biometric system with a low false acceptance rate. Otherwise, it might falsely identify unauthorized individuals and grant them access.

Remember this

Door access systems include cipher locks, proximity cards, and biometrics. Cipher locks do not identify users. Proximity cards can identify and authenticate users when combined with a PIN. Biometrics can also identify and authenticate users.


 

Q. You need to secure access to a data center. Which of the following choices provides the BEST physical security to meet this need? (Select THREE.)

A. Biometrics

B. Cable locks

C. CCTV

D. Mantrap

Answers are A, C, D. A biometric reader used for access control, a mantrap, and a closed-circuit television (CCTV) system all provide strong physical security for accessing a data center.

Cable locks are effective theft deterrents for mobile devices such as laptops, but they don’t protect data centers.

See Chapter 2 of the CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide for more information physical security controls.

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