CompTIA CompTIA Network+ N10-008 Questions & Answers

• Question 911:

  Wireless users are reporting intermittent internet connectivity. Connectivity is restored when the users disconnect and reconnect, utilizing the web authentication process each time. The network administrator can see the devices connected to the APs at all times. Which of the following steps will MOST likely determine the cause of the issue?

  A. Verify the session time-out configuration on the captive portal settings

  B. Check for encryption protocol mismatch on the client's wireless settings

  C. Confirm that a valid passphrase is being used during the web authentication

  D. Investigate for a client's disassociation caused by an evil twin AP

  Correct Answer: A

• Question 912:

  A technician receives feedback that some users are experiencing high amounts of jitter while using the wireless network. While troubleshooting the network, the technician uses the ping command with the IP address of the default gateway and verifies large variations in latency. The technician thinks the issue may be interference from other networks and non-802.11 devices. Which of the following tools should the technician use to troubleshoot the issue?

  A. NetFlow analyzer

  B. Bandwidth analyzer

  C. Protocol analyzer

  D. Spectrum analyzer

  Correct Answer: D

  A spectrum analyzer is a tool that focuses on the physical layer, which will vary based on the type of analyzer. Although vendors make these analyzers for both audio and optical signals, in most cases spectrum analyzers are used to analyze wireless or radio frequency signals. Spectrum analyzers are primarily used to identify and measure the strength of radio signals that are present in the area. They can visually display these signals by frequency on the device. These devices are used to locate sources of interference that may impact the operation of a wireless network.

• Question 913:

  Which of the following would be BEST to use to detect a MAC spoofing attack?

  A. Internet Control Message Protocol

  B. Reverse Address Resolution Protocol

  C. Dynamic Host Configuration Protocol

  D. Internet Message Access Protocol

  Correct Answer: B

  Reverse Address Resolution Protocol . Can be used to ask what a machine's IP address is based on it's MAC address. If the adress has been spoofed it will obviously show a different IP than the one it is expecting to see

• Question 914:

  A systems administrator needs to improve WiFi performance in a densely populated office tower and use the latest standard. There is a mix of devices that use 2.4 GHz and 5 GHz. Which of the following should the systems administrator select to meet this requirement?

  A. 802.11ac

  B. 802.11ax

  C. 802.11g

  D. 802.11n

  Correct Answer: B

  Wi-Fi 6 (802.11ax) can now divide a wireless channel into a large number of subchannels. Each of these subchannels can carry data intended for a different device. This is achieved throug something called Orthogonal Frequency Division Multiple Access, or OFDMA. The Wi-Fi access point can talk to more devices at once. The new riderless standard also has improved MIMO - Multiple In/Multiple Out. This involves multiple antennas, which let the access point talk to multiple devices at once. With Wi-Fi 5, the access point could talk to devices at the same time, but those devices couldn't respond at the same time. Wi-Fi 6 has an improved version of multi-user or MU-MIMO that lets devices respond to the wireless access point at the same time

• Question 915:

  SIMULATION

  You have been tasked with setting up a wireless network in an office. The network will consist of 3 Access Points and a single switch. The network must meet the following parameters:

  1.

  The SSIDs need to be configured as CorpNet with a key of S3cr3t!

  2.

  The wireless signals should not interfere with each other

  3.

  The subnet the Access Points and switch are on should only support 30 devices maximum

  4.

  The Access Points should be configured to only support TKIP clients at a maximum speed

  INSTRUCTONS

  Click on the wireless devices and review their information and adjust the settings of the access points to meet the given requirements.

  If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

  

  

  A. See explanation below.

  B. PlaceHolder

  C. PlaceHolder

  D. PlaceHolder

  Correct Answer: A

  On the first exhibit, the layout should be as follows

  Access Point Name AP1

  IP Address 192.168.1.3

  Gateway 192.168.1.2

  SSID corpnet

  SSID Broadcast yes

  Mode G

  Channel 1

  Speed Auto

  Duplex Auto

  WPA

  Passphrase S3cr3t!

  Exhibit 2 as follows

  Access Point Name AP2

  IP Address 192.168.1.4

  Gateway 192.168.1.2

  SSID corpnet

  SSID Broadcast yes

  Mode G

  Channel 6

  Speed Auto

  Duplex Auto

  WPA

  Passphrase S3cr3t!

  Exhibit 3 as follows

  Access Point Name AP3

  IP Address 192.168.1.5

  Gateway 192.168.1.2

  SSID corpnet

  SSID Broadcast yes

  Mode G

  Channel 11

  Speed Auto

  Duplex Auto

  WPA

  Passphrase S3cr3t!