CompTIA CompTIA Mobility+ N10-005 Questions & Answers

• Question 551:

  Which of the following is needed when using WPA2-Enterprise wireless encryption?

  A. TFTP

  B. RADIUS

  C. LDAP

  D. IPSec

  Correct Answer: B

  The WPA2 standard supports two different authentication mechanisms: one using standard RADIUS servers and the other with a shared key, similar to how WEP works.

• Question 552:

  Which of the following commands will provide an administrator with the number of hops a packet takes from host to host?

  A. nslookup

  B. ping

  C. traceroute

  D. route

  Correct Answer: C

  In computing, traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop indicates the total time spent to establish the connection.

• Question 553:

  Which of the following protocols is MOST commonly associated with VoIP?

  A. LDAP

  B. HTTPS

  C. SIP

  D. SCP

  Correct Answer: C

  The Session Initiation Protocol (SIP) is a signaling communications protocol, widely used for controlling multimedia communication sessions such as voice and video calls over Internet Protocol (IP) networks.

• Question 554:

  Compare the settings below to determine which of the following issues is preventing the user from connecting to a wireless network.

  

  Which of the following settings is incorrect on the client?

  A. The mode is incorrect

  B. SSID Mismatch

  C. Incorrect WEP Key

  D. Channel is set incorrectly

  Correct Answer: B

  the first thing which will be checked is the SSID and it is case sensitive but in the above shown example, it is not same so it will stop user from connecting.

• Question 555:

  A technician has received a trouble ticket from a user who has intermittent wireless access. Moving the computer farther from the WAP results in a more stable connection. Which of the following is MOST likely the cause of this instability?

  A. Wrong encryption type

  B. SSID mismatch

  C. Signal bounce

  D. Incorrect channel

  Correct Answer: C

  Bouncing is the tendency of any two metal contacts in an electronic device to generate multiple signals as the contacts close or open.

• Question 556:

  A company is looking for the simplest solution to help prioritize VoIP traffic on its congested network. Which of the following would BEST accomplish this?

  A. MPLS

  B. Caching engines

  C. QoS

  D. Load balancing

  Correct Answer: C

  QoS is the service where you can prioritize traffic running over one protocol as compared to the other. It is very similar to the term where you are opening a VIP queue for allowing that traffic to pass.

• Question 557:

  A technician has been dispatched to investigate connectivity problems of a recently renovated office. The technician has found that the cubicles were wired so that the network cables were run inside the conduit with the electrical cabling. Which of the following would MOST likely resolve the connectivity issue?

  A. Power-cycle the computers and switches to re-establish the network connection.

  B. Re-run the network cabling through the ceiling alongside the lights to prevent interference.

  C. Test the wiring in the network jacks for faults using a cable verifier.

  D. Re-run the network cabling so that they are 12 inches or more away from the electrical lines.

  Correct Answer: D

  The electric cables create electric field around them and can interrupt in internet connectivity as well. It is quite possible that this is the cause which is creating the connectivity issue.

• Question 558:

  A technician has been dispatched to investigate an issue where several users in the same aisle have stated they have had no network connection for over an hour. When the technician gets there, the network seems to be up and running. Which of the following should the technician do NEXT?

  A. Ask the users for more information, such as which applications were not functioning.

  B. Power-cycle the switch that the users share to clear out cached DNS records.

  C. Escalate the issue to the network administrator to have their domain credentials reset.

  D. Close and document the service call, as there was no actual issue affecting the users.

  Correct Answer: A

  Because the system was up and running when the technician reached there, he can ask for applications that were not working or can ask for more information so that he can isolate the problem. Power cycling will not help because the system is already up and recycling can wipe out logs. Escalation will also not help because the system is now up and running. Closing the call will be unfair because the same instance can occur again.

• Question 559:

  When a packet that is entering a switch port is encapsulated, which of the following is the switch performing?

  A. 802.1q

  B. Collision avoidance

  C. Port mirroring

  D. STP

  Correct Answer: A

  Encapsulation is the term associated with 802.1q which is enabled by default on many devices.

• Question 560:

  A technician is reviewing the following aggregated information on a server to determine the cause of a user's connection problem: Which of the following is the technician reviewing?

  

  A. Syslog server logs

  B. Application logs

  C. Network sniffer logs

  D. SNMPv2 queries

  Correct Answer: A

  Syslog server logs are the logs that are saved on a system whenever an instance happens of the wireless device. Reviewing the logs can help him understand the behavior of the WAP as well as the client.