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Network+ Tools

May 13, 2013 By

Network+ Tools

If you’re preparing for the Network+ exam, you can expect to see some questions related to Network+ tools.  This includes:

  • Command line tools such as ipconfig/ifconfig, ping, tracert/traceroute, nslookup, dig, arp, netstat, route, and nbtstat.
  • Hardware tools such as cable testers, cable certifiers, crimpers, butt sets, toner probes, punch down tools, loop back plugs, TDRs, OTDRs, mulimeters, and environmental monitors.
  • Common cable problems and information on how to troubleshoot them using many of these tools.

A new Get Certified Get Ahead Kindle Short is now available. The CompTIA Network+: Tools (A Get Certified Get Ahead Kindle Short) covers all of these tools and will help you master the following Network+ objectives:

  • 3.6 Given a scenario, troubleshoot common physical connectivity problems.
  • 4.2 Given a scenario, use appropriate hardware tools to troubleshoot connectivity issues.
  • 4.3 Given a scenario, use appropriate software tools to troubleshoot connectivity issues.

Network+ Tools Practice Test Questions

Test your readiness with 60 realistic practice test questions in this Kindle short. Each question includes in-depth explanations so that you’ll know why the correct answer is correct and why the incorrect answers are incorrect. Here are two sample practice test questions from this Network+ tools Kindle Short.

1. You are troubleshooting connectivity issues with a Unix server and want to determine if it has valid IP address. What command would you use?

A. Ipconfig

B. Ifconfig

C. Ping

D. Arp

Answer at end of blog

2. Of the following choices, what is the BEST tool to verify a POTS line has a valid tone at the IDF?

A. Butt set

B. Toner probe

C. Punch down tool

D. Cable certifier

Answer at end of blog

Network+ Tools Chapter

This Kindle Short will be part of the full CompTIA Network+ Get Certified Get Ahead Study Guide written in the same style as the top selling CompTIA Security+: Get Certified Get Ahead Study Guide. It includes the following sections:

  • Introduction. Full description of the Network+ exam letting you know what you can expect when you take it. The introduction includes a section on the question types you can expect including information on the performance based questions.
  • Assessment questions. An 18-question assessment exam with realistic practice test questions to help you assess your understanding of key topics. All questions have in-depth explanations and this Kindle Short covers the content in more depth.
  • Full chapter: “Using Tools and Troubleshooting Networks.” A full chapter covering command line tools, hardware tools, software tools, and how to identify and troubleshoot common cable problems. The chapter includes “Remember This” text boxes throughout to help you focus on what you need to know for the exam.
  • Exam review. Review key testable information with this concise review section.
  • End of chapter practice test questions. 25 realistic practice test questions at the end of the chapter. Use these questions to test your understanding of the objectives covered in this eBook. The explanations help you master the content so that you can answer questions on the live exam no matter how CompTIA words them.
  • Practice questions. 17 more realistic practice test questions in an end of book practice exam. As with all other questions in this Kindle Short, these questions include in-depth explanations.
  • Acronym list. An acronym list covering all of the acronyms in this eBook plus many more needed for the Network+ exam.

All this for only $2.99. If you have a Kindle and Amazon Prime, you can get it for free from the Kindle Owner’s Lending Library. If you don’t have Amazon Prime, you can sign up for their 30-day free trial here.

If you don’t have a Kindle, you can download free reading apps for just about any device from here.

More Kindle Shorts

You can use this Kindle Short along with other Kindle Shorts in the Get Certified Get Ahead Kindle Short series to focus your preparation for the Network+ exam.

Over 275 realistic practice test questions available in the
CompTIA Network+ N10-005: Practice Test Questions (Get Certified Get Ahead)Kindle book.
Only $9.99.
Free Kindle apps available for any platform.

Can You Identify These Tools?

You should be able to match pictures with tool names on the Network+ exam. The pictures in the following table are from this Kindle Short. Can you name them?

1)Network+ Tools Toner Probe 2)Network+ Tools Cable Certifier
 3)Network+ Tools Butt Set 4)Network+ Tools Crimper

Here’s a hint. The objectives expects you to know about the following hardware tools:  cable tester, cable certifier, crimper, butt set, toner probe, loop back plug, TDR, OTDR, multimeter, or environmental monitor?

Join the conversation and get more free practice test questions on The Get Certified Get Ahead Facebook Page

Network+ Tools Practice Test Question Answers

1. You are troubleshooting connectivity issues with a Unix server and want to determine if it has valid IP address. What command would you use?

A. Ipconfig

B. Ifconfig

C. Ping

D. Arp

B is correct. You would use the ifconfig command on Unix/Linux-based systems to view TCP/IP configuration information. You would use ipconfig on Windows systems to provide similar information. Ping checks connectivity between systems. Arp shows media access control (MAC) addresses that the system has mapped to IP addresses.

Realistic practice test questions for the Network+ N10-005 exam Available through LearnZapp on your mobile phone

2. Of the following choices, what is the BEST tool to verify a POTS line has a valid tone at the IDF?

A. Butt set

B. Toner probe

C. Punch down tool

D. Cable certifier

A is correct. You would use a butt set to troubleshoot phone issues including issues related to a plain old telephone service (POTS) line terminated at an intermediate distribution frame (IDF). A valid tone on a phone line is a dial tone. You can use a toner probe to help you locate a cable terminated at an IDF but it is not the best choice to verify a POTS line has a valid dial tone. Punch down tools secure cables to a frame. Cable certifiers verify the integrity and operation of a cable.

More Network+ Resources

If you’re studying for the Network+ exam and want to pass the first time you take it, check out these resources:

Summary

If you’re preparing for the Network+ exam, you should know the Network+ tools. This includes both software-based command line tools, and hardware-based tools. The CompTIA Network+: Tools (A Get Certified Get Ahead Kindle Short) covers all of these tools and will help you master these Network+ tools objectives so that you can pass the Network+ exam the first time you take it.

Filed Under: Network+ Tagged With: ,

Network+ WAP Performance Based Questions

May 9, 2013 By

Network+ WAP Performance Based Questions

If you’re planning on taking the Network+ exam you can expect to see some Network+ WAP performance based questions. These questions expect you to know how to configure a wireless access point (WAP). Even if you’ve done it once or twice, it might not be fresh in your mind so it’s good to review the topics.

Networks commonly use wireless access points (WAPs) and configuring security with them is an important skill to have. CompTIA stresses this on both the Network+ and Security+ exams. You should be able to configure basics such as:

  • Change the SSID
  • Enable/disable SSID broadcast
  • Enable MAC address filtering
  • Configure security such as WPA and WPA2
  • Configure WPA/WPA2 Enterprise

Ideally, you should get your hands on a WAP or a wireless router used in many homes and small offices home offices (SOHOs). They are easily accessible and aren’t expensive. The experience configuring it is valuable for on the job and the exam.

The following sections show how to configure a Cisco M20 wireless router. All devices aren’t exactly the same, but you’ll find similar settings if you click around.

Pass the Network+ exam the first time you take it:
CompTIA Network+ N10-005 Practice Test Questions (Get Certified Get Ahead)

Accessing the Administration Page

Wireless access points have web pages you can use to configure settings. You can access the administration pages by entering the IP address of the access point into the web browser. The IP address of most access points is either 192.168.1.1 or 192.168.0.1.

After entering the IP address, you’re prompted to enter the name and password for the administrator account. These also have defaults such as “admin” for the administrator account and “admin” for the password but it is highly recommended to change the defaults.

Network+ WAP Performance Based Questions - Change the SSID

The service set identifier (SSID) is the name of the network.  It is a case sensitive string of up 32 characters. Devices come with a default SSID and it’s recommended to change the SSID from the default as a best practice.

The following figure shows the basic setting for SSID. On this WAP, you have to select the Wireless main menu and the Basic Wireless Settings submenu.  You then enter the desired network name for in the Network Name (SSID) text box. In the figure, I used the SSID of MyHomeWAP but any name with 32 characters can be used.

Configure SSID for Network+ WAP Performance Based Questions

Network+ WAP Performance Based Questions - Enable/Disable SSID Broadcast

You can hide a wireless network from casual users by disabling SSID broadcast and a performance based question might require you to select one of these settings. The following figure shows how this is done on a sample access point.

Disable SSID for Network+ WAP Performance Based Questions

It’s important to realize that even if you disable SSID broadcast, attackers can still discover the SSID with a wireless sniffer. In other words, disabling SSID broadcast doesn’t provide any real security. You can read more about in the  Disable SSID Broadcast or Not? blog.

Enable MAC Address Filtering

Another configuration you might need to implement for Security+ WAP performance based questions is media access control (MAC) address filtering. The MAC address is assigned to the network interface card (NIC) when it is manufactured and you can use it to identify specific devices. When used within a MAC address filter, you can restrict access to the wireless network to specific devices based on their MAC address.

As an example, the following figure shows a MAC address filter configured on a wireless access point.  You can see that it is enabled and configured to “Permit PCs listed below to access the wireless network.” The wireless client list includes five MAC addresses. Devices with these MAC addresses will be allowed access to the network, but other devices will be blocked.

MAC Filter for Security+ WAP Performance Based Questions

This setting isn’t restricted to only PCs. Any wireless device has a MAC address including tablet devices and smartphones.

You can also configure a MAC address filter to block specific devices. For example, if your neighbor is using your access point to access the Internet, you can block his system using his MAC address. You would select the first setting “Prevent PCs listed below from accessing the wireless network” and enter the MAC address of his system.

Network+ WAP Performance Based Questions -

Configure Security Such as WPA and WPA2

You also need to know how to configure basic security setting such as Wi-Fi Protected Access (WPA) or Wi-Fi Protected Access version 2 (WPA2). You can typically select the appropriate setting from a drop down box and then enter the appropriate passphrase. The settings entered on the access point must be used on all devices that connect to the access point.

The following figure shows these settings.

WPA 2 for Network+ WAP Performance Based Questions

Configure WPA/WPA2 Enterprise

Both WPA and WPA2 operate in either Personal or Enterprise modes. Most home and small business networks use Personal mode using a passphrase or password.

Larger enterprises add additional security to WAPs with WPA Enterprise or WPA2 Enterprise.  Enterprise mode provides additional security by adding an authentication server and requiring each user to authenticate through this server. Authentication requires all users to prove their identities and a common way authentication is accomplished is with a username and password. A user claims an identity with a username and proves the identity with a password.

Enterprise mode requires an 802.1x server typically configured as a Remote Authentication Dial-In User Service (RADIUS) server, which is configured separately from the access point. The RADIUS server has access to the user’s authentication credentials and can verify when a user has entered authentication information correctly.

The following figure shows the configuration for an access point using WPA2 Enterprise. After selecting WPA2 Enterprise from the drop down box, the  selections change. You then need to enter the IP address of the RADIUS server and the shared secret configured on the RADIUS server. The default port for RADIUS is 1812 and you only need to change this if the RADIUS server is using a non-default port.RADIUS for Network+ WAP Performance Based Questions

Other Network+ Resources

Kindle Shorts

I’m writing chapters on the Network+ exam and publishing them as Kindle Shorts. So far, I have published two:

Practice Test Questions for your Mobile Device

Instead of the Kindle book, you can purchase these questions for your mobile device. I’ve partnered with Learnzapp and they have published several apps for a variety of different platforms.

Network+ WAP Performance Based Questions Summary

You can expect to see some Network+ WAP performance based questions on the Network+ exam. These questions expect you to know how to configure a wireless access point (WAP) including the SSID, MAC address filtering, and security settings such as WPA2 Personal or WPA2 Enterprise.

Filed Under: Network+ Tagged With: ,

CompTIA Network+ Wireless Topics

April 15, 2013 By

The CompTIA Network+ Wireless Topics (A Get Certified Get Ahead Kindle Short) is now available. This Kindle short includes a chapter on Network+ Wireless topics and 55 realistic questions with full explanations. Only $2.99.

In case you don’t know it, you can read Kindle books no just about any device with freely available Kindle apps.

Part of Upcoming CompTIA Network+: Get Certified Get Ahead Study Guide

Many of you might now that I’m in the process of writing a Network+ book using the same format as the top selling CompTIA Security+: Get Certified Get Ahead Study Guide.

However, instead of waiting until the entire book is complete, I’ve decided to post some chapters on Amazon in the Kindle format. I’m calling these “Kindle Shorts” because they aren’t full books but they do have a lot of relevant content.

The first “Kindle Short” is on wireless topics and covers all of the CompTIA Network+ Wireless objectives:

  • 2.2 Given a scenario, install and configure a wireless network.
  • 2.4 Given a scenario, troubleshoot common wireless problems.
  • 3.3 Compare and contrast different wireless standards.
  • 5.1 Given a scenario, implement appropriate wireless security measures.
  • 5.4 Explain common threats, vulnerabilities, and mitigation techniques.

If you want another perspective on the wireless objectives to ensure you have mastered these topics, check out this book.

Part of Kindle Owners’ Learning Library

This Kindle short is available for free to Kindle device owners that have an Amazon Prime Membership as a part of the Kindle Owner’s Lending Library.

Other Network+ Study Resources

If you’re studying for the Network+, check out these additional resources:

Filed Under: Network+ Tagged With:

Network+ and Security+ Blog Links

April 8, 2013 By

I created an easy to navigate page of Security+ blog links last week and in response to requests, I’ve completed a similar page for Network+ blog links.

  • Security+ Blog Links. This page includes links to posts about the Security+ exam, multiple free practice test questions, and various topics such as risk, authentication, cryptography, networking, and attacks.
  • Network+ Blog Links. This page includes links to posts about the Network+ exam, multiple free practice test questions, command line tools, hardware tools, wireless topics, and more.
Filed Under: Network+, Security+ Tagged With: , ,

Network+ and Wireless Encryption

April 1, 2013 By

If you’re preparing for the Network+ SY0-301 exam, you probably realize that a good chunk of it covers wireless topics including wireless encryption. More specifically, two specific objectives address wireless encryption directly:

  • 2.4 Given a scenario, troubleshoot common wireless problems. (This objective includes “Encryption type”.)
  • 5.1 Given a scenario, implement appropriate wireless security measures. (This objective includes “Encryption protocols: WEP, WPA, WPA2, and WPA Enterprise”.)

Network+ Practice Test Questions

Here are a couple of practice test questions you can use to check your knowledge:

Q1. Of the following choices, what provides the most security for a wireless network?
A. WEP
B. WPA
C. WPA2
D. WPA2 Enterprise

Q2. Of the following choices, what provides the most security for a wireless network that doesn’t have access to a RADIUS server?

A. WEP
B. WPA
C. WPA2
D. WPA2 Enterprise

Q3. Attackers have recently hacked into a small business owner’s wireless network and you are asked to help him secure it. Of the following choices, what provides the best security?

A. WEP
B. WPA
C. Disabling SSID broadcast
D. Selecting alternate channels

Over 275 realistic practice test questions available in the
CompTIA Network+ N10-005: Practice Test Questions (Get Certified Get Ahead) Kindle book.
Only $9.99 . Free Kindle apps available for any platform.

WEP

Wired Equivalent Privacy (WEP) was the original security protocol used to secure wireless networks. As the name implies, the goal was to provide the same level of privacy and security within a wireless network as you’d have in a wired network. Unfortunately, WEP has significant vulnerabilities, and attackers have many tools they can use to break into WEP-protected networks. WEP was officially deprecated in 2004 and is not recommended for use. WPA was identified as an interim replacement and WPA2 is a permanent replacement.

WEP uses a key that is similar to a password or passphrase. Each device in the wireless network is configured with same key.

WPA

Wi-Fi Protected Access (WPA) was an intermediate replacement for WEP. It provided a significant increase in security over WEP without requiring users to upgrade their hardware. WPA was never meant to be a permanent replacement for WEP, but instead was intended to provide a temporary replacement while developers created a permanent solution with WPA2.

WPA originally used a stream encryption technique with Temporal Key Integrity Protocol (TKIP). TKIP provides several improvements for WPA over WEP. A benefit of WPA with TKIP is that it can be used on the same hardware used by WEP.  It requires different software or firmware upgrades, but the hardware doesn’t need to be replaced. Unfortunately, WPA with TKIP was ultimately cracked too.

Later, WPA was modified so that it could use  Advanced Encryption Standard (AES) instead of TKIP. AES is a very strong and efficient encryption algorithm and it is recommended for use in many implementations. Several people have been successful at cracking WPA with TKIP, so whenever possible, it’s best to upgrade WPA to WPA2, or at least use WPA with AES instead of TKIP.

WPA (also known as WPA Personal) uses a password or passphrase sometimes referred to as a pre-shared key (PSK). All devices in the wireless network must be configured with the same PSK.

WPA2

Hardware in most systems today supports Wi-Fi Protected Access v2 (WPA2). It is the permanent replacement for WEP and WPA but it is not supported on legacy hardware designed for WEP. WPA2 (also known as IEEE 802.11i) uses stronger cryptography than both WEP and WPA and the Wi-Fi Alliance requires all devices carrying its WI-FI CERTIFIED logo to meet WPA2 standards.

Just as WPA uses a PSK, WPA2 uses a PSK and all devices in the wireless network need to have the same PSK. When a PSK is used with WPA2 it is known as WPA2 Personal.

Join the conversation and get more free practice test questions on
The Get Certified Get Ahead Facebook Page

Personal and Enterprise Modes

Both WPA and WPA2 operate in either Personal or Enterprise modes. Most home and small business networks use Personal mode while some larger organizations use Enterprise mode.

As mentioned previously, Personal mode uses a passphrase or PSK and is rather simple to implement. You enter the PSK on the WAP and enter the same PSK on each of the wireless devices in the network. In this way, anyone with the PSK can access the wireless network. WPA-PSK or WPA2-PSK both indicate Personal mode.

Enterprise mode provides additional security by adding an authentication server and requiring each user to authenticate through this server. Authentication requires all users to prove their identities and a common way authentication is accomplished is with a username and password.

The authentication server is a separate RADIUS server or an 802.1x server which is configured separately from the access point. After the RADIUS server is configured, you can configure the access point to use Enterprise mode and include details related to the RADIUS server. You’ll commonly enter the IP address of the RADIUS server, the port it is using, and a shared secret that has been preconfigured on the RADIUS server.

Once Enterprise mode is configured properly, users will be challenged to authenticate before they are granted access to the wireless network. The user’s credentials are passed to the RADIUS server and the RADIUS server has access to a database of the user’s credentials used for comparison. If the user provides the correct credentials, the user is granted access. If the credentials are incorrect, the user is blocked from accessing the wireless network.

Enterprise mode is more advanced than most home networks need but many larger organizations use it. It prevents anonymous access to a network and is effective at liming unauthorized access. Similarly, some hotels use pay-as-you-go Wi-Fi access. For example, many hotels provide wireless access for $20 per day. When you attempt to access the wireless network you are challenged to enter a username and password. This is often as simple as entering your room number and your last name. The RADIUS checks the database to verify your room number is associated with your last name and you are granted access.

It’s important to recognize that Enterprise mode provides the strongest level of security for a wireless network. A combination of both a security protocol such as WPA2 and an authentication server significantly reduces the chance of unauthorized personnel accessing a wireless network. Even WPA Enterprise using AES provides stronger security than WPA2 Personal using only a PSK.

Realistic practice test questions for the Network+ N10-005 exam
Available through LearnZapp on your mobile phone

Answer to Practice Test Question 1

Q1. Of the following choices, what provides the most security for a wireless network?

A. WEP
B. WPA
C. WPA2
D. WPA2 Enterprise

Q1 Answer. D is correct.

Wi-Fi Protected Access v2 (WPA2) Enterprise mode provides greatest amount of security for a wireless network. It adds in an authentication server such as a Remote Authentication Dial-in User Service (RADIUS) server.

WEP provides the least amount of security for a wireless network and is not recommended for use. WEP was temporarily replaced with WPA and WPA2 which provide progressively more security.

WPA and WPA2 are also known as WPA Personal and WPA2 Personal and each use a preshared key or passphrase instead of an authentication server.

Answer to Practice Test Question 2

Q2. Of the following choices, what provides the most security for a wireless network that doesn’t have access to a RADIUS server?

A. WEP
B. WPA
C. WPA2
D. WPA2 Enterprise

Q2 Answer. C is correct.

Wi-Fi Protected Access v2 (WPA2) provides the most security when compared to WEP and WPA.

If a Remote Authentication Dial-in User Service (RADIUS) server was used, you could implement WPA2 Enterprise mode which is even stronger but the question states that a RADIUS server is not available.

Answer to Practice Test Question 3

Q3. Attackers have recently hacked into a small business owner’s wireless network and you are asked to help him secure it. Of the following choices, what provides the best security?

A. WEP
B. WPA
C. Disabling SSID broadcast
D. Selecting alternate channels

Q3 Answer. B is correct.

Wi-Fi Protected Access (WPA) provides the best security of the given choices and WPA2 (not a possible choice) is even better.

WEP is cracked and not recommended for use.

Disabling SSID broadcast hides the wireless network and provides minimal security because attackers can still detect the SSID with a wireless sniffer.

Selecting an alternate channel is effective if there is interference but it doesn’t add to security.

Filed Under: Network+ Tagged With: , ,

Network+ Performance Based Questions

December 3, 2012 By

Performance based testing is one of the biggest changes that have been occurring with CompTIA certification exams. They are in current 800 series  A+ exams, the Network+ exam, and coming after the first of the year in Security+ exams.  Instead of just multiple choice questions, you can expect to see a mixture of different types of questions.

An earlier blog titled CompTIA Performance Based Testing talks about some of the changes in more depth but here’s just a few tidbits on the types of questions you might run across on  the Network+ exam. Overall, it’s good news.

You probably won’t see more than three of these types of questions and they are less about doing something than actively showing you have the knowledge.

Realistic Practice Test Questions for the Network+ exam.
CompTIA Network+ N10-005 Practice Test Questions (Get Certified Get Ahead)

Identify

As an example, objective 3.2 “Categorize standard connector types based on network media” expects you to be able to identify different types of connectors. You should be familiar with each of the media listed. One way to make sure you’re prepared is to view pictures of the different types of media. You can easily do so with Google images to remind yourself.

Fiber

This page includes some multiple choice practice test questions related to different connector types.
Realistic practice test questions for the Network+ N10-005 exam
Available through LearnZapp on your mobile phone

Tools

Similarly, you might be required to identify a tool based on a specific requirement. For example, objective 4.2 “Given a scenario, use appropriate hardware tools to troubleshoot connectivity issues” expects you to know the purpose of many common tools.  If you need to identify a tool by sight that can identify a short or open, what tool would you use?

A past post titled Network+ Hardware Tools includes basic explanations of these tools along with links to images of them.

Summary

If you’re planning on taking the Network+ exam soon, make sure you can identify many of the different connectors and tools by sight. Good luck.

Filed Under: Network+ Tagged With: , ,

Free Network+ Practice Test Questions 3.3

November 30, 2012 By

If you’re preparing for the Network+ SY0-301 exam, you might like to check your readiness with a few free practice test questions. This page includes three free practice test questions from the following objective in the N10-005 exam.

Objective 3.3 Compare and contrast different wireless standards

  • 802.11 a/b/g/n standards
  • Distance
  • Speed
  • Latency
  • Frequency
  • Channels
  • MIMO
  • Channel bonding
These practice test questions came from CompTIA Network+ N10-005: Practice Test Questions (Get Certified Get Ahead). This resource includes 275 realistic practice test questions and over 175 flash cards to help test your readiness so that you can take and pass the exam the first time you take it. It’s available for only $9.99 in the Kindle version and you can download free Kindle apps from Amazon for just about any platform.

Practice Test Question 1

Q.  Which of the following uses MIMO and OFDM?

 

A. 802.11a

B. 802.11b

C. 802.11g

D. 802.11n

 

Answer at end of post.

Practice Test Question 2

Q. Which of the following wireless standards has the fastest transfer rate?

 

A. 802.11a

B. 802.11b

C. 802.11g

D. 802.11n

Answer at end of post.

Realistic practice test questions for the Network+ N10-005 exam
Available through LearnZapp on your mobile phone

Practice Test Question 3

Q.  During regular conference sessions, an 802.11g wireless network is overwhelmed with the amount of traffic it needs to process by wireless clients. Most of the additional traffic is from attendees’ mobile devices such as smart phones. What can be done to improve the performance of the wireless network?

 

A. Use a channel that doesn’t interfere with the smart phones

B. Use channel bonding

C. Switch to the 2.4 GHz frequency band

D. Add MIMO capabilities to the 802.11g network

 

Answer at end of post.

These practice test questions are from the CompTIA Network+ N10-005 Practice Test Questions (Get Certified Get Ahead)  book. It includes 275 realistic practice test questions with in-depth explanations for the CompTIA Network+ N10-005 exam. If you’ve been studying for this exam and want to test your readiness, this book is for you.

It is available as Kindle ebook for only $9.99 and the Kindle version includes dozens of flash cards to help you reinforce key testable topics. You can download free Kindle apps from Amazon so that you can access the ebook from just about any platform including:

  • Windows PC
  • MAC
  • iPhone
  • iPad
  • Android
  • BlackBerry
  • Windows Phone 7
You can also get it on the Barnes and Noble Nook here.

You may also like to check out other the Network+ blogs and practice test questions from this link or individually here:

N10-005: Exam Answer 1

Q.  Which of the following uses MIMO and OFDM?

 

A. 802.11a

B. 802.11b

C. 802.11g

D. 802.11n

 

D is correct. 802.11n uses multiple-input multiple-output (MIMO) technologies and orthogonal frequency-division multiplexing (OFDM). 802.11n is the only one of the listed wireless standards that uses MIMO.

 

A is incorrect. 802.11a uses OFDM but not MIMO.

B is incorrect. 802.11b uses direct-sequence spread spectrum (DSSS) instead of OFDM and it does not use  MIMO.

C is incorrect. 802.11g uses OFDM and DSSS, but not MIMO.

 

Objective:  3.3 Compare and contrast different wireless standards.

Realistic practice test questions for the Network+ N10-005 exam
Available through LearnZapp on your mobile phone

N10-005 Exam: Answer 2

Q.Which of the following wireless standards has the fastest transfer rate?

 

A. 802.11a

B. 802.11b

C. 802.11g

D. 802.11n

 

Answer D is correct. 802.11n has a maximum transfer rate of 600 Mbps, which is faster than the other standards.

 

A is incorrect. 802.11a has a maximum transfer rate of 54 Mbps.

B is incorrect. 802.11b has a maximum transfer rate of 11 Mbps.

C is incorrect. 802.11g has a maximum transfer rate of 54 Mbps.

 

Objective:  3.3 Compare and contrast different wireless standards.

 

If you’re looking for more information on the CompTIA Network+ exam, click here.
The link provides a listing of relevant blogs on the Get Certified Get Ahead site.

N10-005: Answer 3

Q.  During regular conference sessions, an 802.11g wireless network is overwhelmed with the amount of traffic it needs to process by wireless clients. Most of the additional traffic is from attendees’ mobile devices such as smart phones. What can be done to improve the performance of the wireless network?

 

A. Use a channel that doesn’t interfere with the smart phones

B. Use channel bonding

C. Switch to the 2.4 GHz frequency band

D. Add MIMO capabilities to the 802.11g network

 

Answer B is correct. Channel bonding can be used to increase the maximum transfer rate from 54 Mbps to 108 Mbps on 802.11g.

A is incorrect. If cordless telephones were interfering with a wireless networks, changing the channel would reduce the interference. However, smart phones are the wireless clients using the wireless network, and they are not interfering with the wireless network.

C is incorrect. 802.11g uses the 2.4 GHz frequency band already.

D is incorrect. 802.11g does not support multiple-input multiple-output (MIMO) with multiple antennas. MIMO is used with 802.11n.

Objective:  3.3 Compare and contrast different wireless standards.

What’s next after Network+ for you?
If you want to take and pass the Security+ exam the first time you take it, check out the
CompTIA Security+: Get Certified Get Ahead: SY0-301 Study Guide.


Success is within your reach.

 

Get Certified Get Ahead

Filed Under: Network+ Tagged With: , , ,

Free Network+ Practice Test Questions 2.3

November 23, 2012 By

If you’re preparing for the Network+ SY0-301 exam, you might like to check your readiness with a few free practice test questions. This page includes three free practice test questions from the following objective in the N10-005 exam.

Objective 2.3 Explain the purpose and properties of DHCP

  • Static vs. dynamic IP addressing
  • Reservations
  • Scopes
  • Leases
  • Options (DNS servers, suffixes)
These practice test questions came from CompTIA Network+ N10-005: Practice Test Questions (Get Certified Get Ahead). This resource includes 275 realistic practice test questions and over 175 flash cards to help test your readiness so that you can take and pass the exam the first time you take it. It’s available for only $9.99 in the Kindle version and you can download free Kindle apps from Amazon for just about any platform.

Practice Test Question 1

Q.  What can you use to dynamically assign the same IP address to a printer configured as a network device?

 

A. DNS

B. DHCP reservation

C. SNMP

D. DHCP exclusion

 

Answer at end of post.

Practice Test Question 2

Q.You are troubleshooting a computer system and you determine it has been assigned an IP address of 169.254.45.83. What does this indicate?

 

A. DNS could not be reached

B. DHCP could not be reached

C. The default gateway could not be reached

D. The computer’s firewall is enabled

 

Answer at end of post.

Realistic practice test questions for the Network+ N10-005 exam
Available through LearnZapp on your mobile phone

Practice Test Question 3

Q.  What function does DHCP provide on a network?

 

A. Dynamically assigns IP addresses

B. Resolves host names to IP addresses

C. Translates public IP addresses to private IP addresses

D. Filters traffic based on ACLs

 

Answer at end of post.

These practice test questions are from the CompTIA Network+ N10-005 Practice Test Questions (Get Certified Get Ahead)  book. It includes 275 realistic practice test questions with in-depth explanations for the CompTIA Network+ N10-005 exam. If you’ve been studying for this exam and want to test your readiness, this book is for you.

It is available as Kindle ebook for only $9.99 and the Kindle version includes dozens of flash cards to help you reinforce key testable topics. You can download free Kindle apps from Amazon so that you can access the ebook from just about any platform including:

  • Windows PC
  • MAC
  • iPhone
  • iPad
  • Android
  • BlackBerry
  • Windows Phone 7
You can also get it on the Barnes and Noble Nook here.

You may also like to check out other the Network+ blogs and practice test questions from this link or individually here:

N10-005: Exam Answer 1

Q.  What can you use to dynamically assign the same IP address to a printer configured as a network device?

 

A. DNS

B. DHCP reservation

C. SNMP

D. DHCP exclusion

 

B is correct. Dynamic Host Configuration Protocol (DHCP) is used to dynamically assign IP addresses to network devices including network printers that can be configured as DHCP clients. A DHCP reservation maps the IP address to the printer’s media access control (MAC) address. Once a DHCP reservation is configured,  DHCP will always issue the same IP address to this printer.

 

A is incorrect. Domain Name System (DNS) is used to resolve host names to IP addresses with A records (also called host records). DNS can also resolve IP addresses to host names with pointer (PTR) records, but it does not assign IP addresses.

C is incorrect. The Simple Network Management Protocol is used to administer and monitor network devices.

Dis incorrect.  A DHCP exclusion would be used if the printer is manually assigned an IP address within a DHCP scope and you want to ensure that the address is not issued to any other DHCP clients.

 

Objective:  2.3 Explain the purpose and properties of DHCP.

Realistic practice test questions for the Network+ N10-005 exam
Available through LearnZapp on your mobile phone

N10-005 Exam: Answer 2

Q.You are troubleshooting a computer system and you determine it has been assigned an IP address of 169.254.45.83. What does this indicate?

 

A. DNS could not be reached

B. DHCP could not be reached

C. The default gateway could not be reached

D. The computer’s firewall is enabled

 

Answer B is correct. An address starting with 169.254 is an Automatic Private Internet Protocol Addressing (APIPA) address and is assigned to a Dynamic Host Configuration Protocol (DHCP) client when a DHCP server cannot be reached. Any time you see an APIPA address, you know the computer is a DHCP client and it didn’t receive a DHCP lease.

 

A is incorrect. Domain Name System (DNS) is used for name resolution and would not cause a system to have an APIPA address.

C is incorrect. The default gateway is assigned by DHCP to a DHCP client and an APIPA address indicates that the client was unable to reach a DHCP server. Also, APIPA addresses do not assign a default gateway.

D is incorrect. Enabling the computer’s firewall would not block DHCP traffic and would not prevent the client from receiving a DHCP address.

 

Objective:  2.3 Explain the purpose and properties of DHCP.

 

If you’re looking for more information on the CompTIA Network+ exam, click here.
The link provides a listing of relevant blogs on the Get Certified Get Ahead site.

N10-005: Answer 3

Q.  What function does DHCP provide on a network?

 

A. Dynamically assigns IP addresses

B. Resolves host names to IP addresses

C. Translates public IP addresses to private IP addresses

D. Filters traffic based on ACLs

 

Answer A is correct. Dynamic Host Configuration protocol (DHCP) dynamically assigns IP addresses and other TCP/IP configuration information such as the address of a Domain Name System (DNS) server and the address of the default gateway.

B is incorrect. DNS resolves host names to IP addresses with A (host) resource records.

C is incorrect. Network Address Translation (NAT) translates public IP addresses to private IP addresses and private IP addresses to public IP addresses.

D is incorrect. A firewall will filter traffic in and out of a network using access control lists (ACLs).

Objective:  2.3 Explain the purpose and properties of DHCP.

What’s next after Network+ for you?
If you want to take and pass the Security+ exam the first time you take it, check out the
CompTIA Security+: Get Certified Get Ahead: SY0-301 Study Guide.


Success is within your reach.

 

Get Certified Get Ahead

Filed Under: Network+ Tagged With: , , ,

Free Network+ Practice Test Questions 1.3

November 16, 2012 By

If you’re preparing for the Network+ SY0-301 exam, you might like to check your readiness with a few free practice test questions. This page includes three free practice test questions from the following objective in the N10-005 exam.

Objective 1.3 Explain the purpose and properties of IP addressing

  • Classes of addresses
  •     A, B, C and D Public vs. Private
  •      Classless (CIDR)
  • IPv4 vs. IPv6 (formatting)
  • MAC address format
  • Subnetting
  • Multicast vs. unicast vs. broadcast
  • APIPA
These practice test questions came from CompTIA Network+ N10-005: Practice Test Questions (Get Certified Get Ahead). This resource includes 275 realistic practice test questions and over 175 flash cards to help test your readiness so that you can take and pass the exam the first time you take it. It’s available for only $9.99 in the Kindle version and you can download free Kindle apps from Amazon for just about any platform.

Practice Test Question 1

Q.  Which of the following is an example of an IPv4 address using CIDR notation?

 

A. 127.0.0.1

B. 192.168.1.1

C. 192.168.5.1/30

D. 169.254.17.4/36

 

Answer at end of post.

Practice Test Question 2

Q.What class of IP address is 224.100.200.3?

 

A. Class A

B. Class B

C. Class C

D. Class D

 

Answer at end of post.

Realistic practice test questions for the Network+ N10-005 exam
Available through LearnZapp on your mobile phone

Practice Test Question 3

Q.  Using ipconfig, you see a computer has an IP address of 169.254.4.23 with a subnet mask of 255.255.0.0. What type of address is this?

 

A. IPv6

B. APIPA

C. DHCP assigned

D. DNS assigned

 

Answer at end of post.

These practice test questions are from the CompTIA Network+ N10-005 Practice Test Questions (Get Certified Get Ahead)  book. It includes 275 realistic practice test questions with in-depth explanations for the CompTIA Network+ N10-005 exam. If you’ve been studying for this exam and want to test your readiness, this book is for you.

It is available as Kindle ebook for only $9.99 and the Kindle version includes dozens of flash cards to help you reinforce key testable topics. You can download free Kindle apps from Amazon so that you can access the ebook from just about any platform including:

  • Windows PC
  • MAC
  • iPhone
  • iPad
  • Android
  • BlackBerry
  • Windows Phone 7
You can also get it on the Barnes and Noble Nook here.

You may also like to check out other the Network+ blogs and practice test questions from this link or individually here:

N10-005: Exam Answer 1

Q.  Which of the following is an example of an IPv4 address using CIDR notation?

 

A. 127.0.0.1

B. 192.168.1.1

C. 192.168.5.1/30

D. 169.254.17.4/36

 

C is correct. Classless Inter-Domain Routing (CIDR) uses a slash (/) and a decimal number to indicate how many bits are one (1) in the subnet mask. The /30 indicates that the subnet mask is 255.255.255.252.

 

A is incorrect. 127.0.0.1 is the loopback address but it doesn’t use CIDR notation.

B is incorrect. An address without a slash is not using CIDR notation.

C is incorrect.  CCMP is an encryption protocol used with wireless networks.

 

Objective:  1.3 Explain the purpose and properties of IP addressing.

Realistic practice test questions for the Network+ N10-005 exam
Available through LearnZapp on your mobile phone

N10-005 Exam: Answer 2

Q.What class of IP address is 224.100.200.3?

 

A. Class A

B. Class B

C. Class C

D. Class D

 

Answer D is correct. Class D addresses are used for multicasting and they start with 224.

 

A is incorrect. Class A addresses are in the range of 1.0.0.0 to 126.255.255.254. In other words, the first number is any number from 1 to 126. 127 is reserved for testing and 127.0.0.1 is the loopback address.

B is incorrect. Class B addresses are in the range of 128.0.0.0 to 191.255.255.254. In other words, the first number is any number from 128 to 191. 127 is reserved for testing and 127.0.0.1 is the loopback address.

C is incorrect. Class C addresses are in the range of 192.0.0.0 to 223.255.255.254. In other words, the first number is any number from 192 to 223.

 

Objective:  1.3 Explain the purpose and properties of IP addressing.

 

If you’re looking for more information on the CompTIA Network+ exam, click here.
The link provides a listing of relevant blogs on the Get Certified Get Ahead site.

N10-005: Answer 3

Q.  Using ipconfig, you see a computer has an IP address of 169.254.4.23 with a subnet mask of 255.255.0.0. What type of address is this?

 

A. IPv6

B. APIPA

C. DHCP assigned

D. DNS assigned

 

Answer B is correct. An address starting with 169.254.x.x is an Automatic Private Internet Protocol Addressing (APIPA) address.

A is incorrect. IPv6 addresses use hexadecimal characters, not decimal characters.

C is incorrect. APIPA addresses are assigned when a Dynamic Host Configuration Protocol (DHCP) client requests a DHCP lease, but a DHCP server doesn’t offer a DHCP lease. In other words, a DHCP server never assigns an APIPA address.

Dis incorrect. Domain Name System (DNS) servers resolve host names to IP addresses with A or AAAA records, IP addresses to host names with PTR records, locate mail servers with MX records, and allow systems to have an alias with CNAME records. DNS servers do not assign any type of IP addresses.

Objective:  1.3 Explain the purpose and properties of IP addressing.

What’s next after Network+ for you?
If you want to take and pass the Security+ exam the first time you take it, check out the
CompTIA Security+: Get Certified Get Ahead: SY0-301 Study Guide.


Success is within your reach.

 

Get Certified Get Ahead

Filed Under: Network+ Tagged With: , , ,

Network+ Command Line Tools Pt 2

August 7, 2012 By

If you’re planning on taking the Network+ exam soon, you may want to review the command line tools such as tracert, nslookup, dig, and route used to troubleshoot connectivity. You don’t have to know every switch related to these command line tools but you should have a good idea of their overall purpose. This blog doesn’t provide all the details about these command line tools, but combined with part 1 it should give you enough for the Network+ exam.

Many people are using the Microsoft Windows Networking Essentials book to help prepare for the Network+ exam. The book was actually written for the MTA 98-366 Networking Fundamentals exam and is helping a lot of people take and pass it. Combined with the CompTIA Network+ N10-005 Practice Test Questions (Get Certified Get Ahead) book, people have told me they have also passed the Network+ exam the first time they took it.

Realistic Practice Test Questions for the Network+ exam.
CompTIA Network+ N10-005 Practice Test Questions (Get Certified Get Ahead)

Practice Test Questions

Q. You want to determine how long it takes a packet to get to and from a router. What can you use?

A. Ipconfig
B. Traceroute
C. Nslookup
D. Netstat

Answer at end

You are running a Linux system and need to verify whether you can reach a DNS server. Which of the following commands can you
use?

A. Dnslookup
B. Dig
C. Route
D. Netstat

Answer at end

Realistic practice test questions for the Network+ N10-005 exam
Available through LearnZapp on your mobile phone

Tracert/Traceroute Command Line Tools

The tracert (or traceroute) command identifies the IP address of each of the hops between two systems. Each hop is a router and the round trip time (RTT) shows how long it takes to get to and from the two systems. Try it with this command:

tracert GetCertifiedGetAhead.com

Results

Tracing route to GetCertifiedGetAhead.com [174.122.52.195] over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms [192.168.1.1]
2 7 ms 7 ms 7 ms 10.114.228.1
3 8 ms 7 ms 11 ms 68.110.110.13
4 8 ms 7 ms 7 ms 172.212.418.165
5 8 ms 9 ms 7 ms 172.212.160.132
6 19 ms 7 ms 7 ms 68.110.18.157
7 13 ms 13 ms 13 ms 68.111.4.133
8 25 ms 39 ms 25 ms xe-1-0-2.bbr02.eq01.wdc02.networklayer.com [50.197.16.21]
9 16 ms 14 ms 13 ms ae7.bbr01.eq01.wdc02.networklayer.com [173.192.118.194]
10 24 ms 24 ms 25 ms ae0.bbr01.tl01.atl01.networklayer.com [173.192.118.153]
11 45 ms 45 ms 45 ms ae13.bbr02.eq01.dal03.networklayer.com [173.192.118.134]
12 44 ms 45 ms 48 ms po32.dsr01.dllstx3.networklayer.com [173.192.118.229]
13 44 ms 46 ms 45 ms te2-1.dsr01.dllstx2.networklayer.com [70.187.255.66]
14 45 ms 44 ms 45 ms te3-1.car11.dllstx6.networklayer.com [70.187.254.218]
15 44 ms 45 ms 46 ms stats.carnation.arvixe.com [174.122.152.195]

Trace complete.

Realistic practice test questions for the Network+ N10-005 exam
Available through LearnZapp on your mobile phone

Nslookup Command Line Tool

The name server lookup (nslookup) command is used to verify that a Domain Name System (DNS) server can resolve host names to IP addresses. It can also verify that a DNS server can resolve fully qualified domain names (FQDNs) to an IP address. A fully qualified domain name includes the host name and the domain name and is commonly used to locate web sites.

The basic syntax is:

nslookp GetCertifiedGetAhead.com

Results

Server: cdns1.cox.net
Address: 68.105.28.11

Non-authoritative answer:
Name: GetCertifiedGetAhead.com
Address: 174.122.52.195

Dig Command Line Tool

The domain information groper (dig) command is a command line tool used to query DNS servers. It provides similar functionality as
nslookup but is only available on Linux/Unix-based systems. It is not available on Windows systems. You can use dig to query DNS servers to very that the DNS server is reachable, and to verify that a DNS server can resolve names to IP addresses.

Arp Command Line Tool

Each time a computer needs to communicate with a system on the same network it uses the Address Resolution Protocol (ARP) to resolve the IP address to the media access control (MAC) address. Information gathered from ARP is stored in the ARP cache and can be viewed with the arp command. The basic syntax is:

arp -a

Partial results:

Interface: 192.168.1.129 — 0xa
Internet Address Physical Address Type
192.168.1.1 68-7f-74-ae-8b-de dynamic
192.168.1.114 10-1f-74-03-99-7d dynamic
192.168.1.122 00-90-a9-b3-b2-1d dynamic

Route Command Line Tool

You can use the route command to show or manipulate the routing table on a computer. The following command will show the routing table:

route print

Partial results

IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.129 10
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
192.168.1.0 255.255.255.0 On-link 192.168.1.129 266
192.168.1.129 255.255.255.255 On-link 192.168.1.129 266
192.168.1.255 255.255.255.255 On-link 192.168.1.129 266
–

What’s next after the Network+ exam?
Pass the Security+ exam the first time you take it with the
CompTIA Security+: Get Certified Get Ahead: SY0-301 Study Guide

Practice Test Questions with Answers

These practice test questions came from CompTIA Network+ N10-005: Practice Test Questions (Get Certified Get Ahead). This resource includes 275 realistic practice test questions and over 175 flash cards to help test your readiness so that you can take and pass the exam the first time you take it. It’s available for only $9.99 in the Kindle version and you can download free Kindle apps from Amazon for just about any platform.

Q. You want to determine how long it takes a packet to get to and from a router. What can you use?

A. Ipconfig
B. Traceroute
C. Nslookup
D. Netstat

Answer: B is correct. The traceroute command shows the round trip time (RTT) for each router (or hop) in the path it traces.

A is incorrect. Ipconfig shows TCP/IP configuration information but not the RTTs.

C is incorrect. Nslookup can query DNS servers for name resolution, but doesn’t list the RTTs for routers.

D is incorrect. The netstat command shows network statistics and open connections.

–
You are running a Linux system and need to verify whether you can reach a DNS server. Which of the following commands can you
use?

A. Dnslookup
B. Dig
C. Route
D. Netstat

Answer: B is correct. The dig command (sometimes called domain information groper) is a utility available on Linux/Unix-based systems that can query domain name system (DNS) servers for specific records.

A is incorrect. Nslookup (not dnslookup) is the precursor to dig on Unix/Linux based systems and is available on Windows systems to query DNS servers.
C is incorrect. The route command allows you to view and manipulate the routing table on a system, including the default gateway.
D is incorrect. Netstat can identify open ports a system is listening on, and list other protocol statistics.

Summary

You should have a basic understanding of command line tools when preparing for the Network+ exam. This blog covered the tracert, traceroute, nslookup, dig, arp, and route and part 1 covers ping, ipconfig, and ifconfig commands and . You may also like to check out these Network+ blogs and other links:

Good Luck!


Filed Under: Network+ Tagged With: ,
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