CompTIA CompTIA Mobility+ N10-005 Questions & Answers

• Question 581:

  A technician has low signal strength connecting two wireless bridges. Which of the following could be the problem?

  A. Low PoE wattage

  B. Opposing antenna polarizations

  C. Short distance between antennas

  D. WPA 2 encryption

  Correct Answer: B

  The polarization of an antenna is the orientation of the electric field (E-plane) of the radio wave with respect to the Earth's surface and is determined by the physical structure of the antenna and by its orientation. It has nothing in common with antenna directionality terms: "horizontal", "vertical", and "circular". Thus, a simple straight wire antenna will have one polarization when mounted vertically, and a different polarization when mounted horizontally.

• Question 582:

  A network administrator must ensure that both the server and the client are authenticated to the wireless system before access is granted. Which of the following should be implemented to meet this requirement?

  A. EAP-PEAP

  B. MAC ACL

  C. EAP-TTLS

  D. MS-CHAPv2

  Correct Answer: C

  Extensible Authentication Protocol, or EAP, is an authentication framework frequently used in wireless networks and Point-to-Point connections. EAP is an authentication framework providing for the transport and usage of keying material and parameters generated by EAP methods.

• Question 583:

  A network administrator needs to implement a monitoring tool and be able to send log information to a server and receive log information from other clients. Which of the following should be implemented? (Select TWO).

  A. SNMP

  B. Network sniffer

  C. Syslog

  D. System log

  E. History log

  Correct Answer: AC

  Simple Network Management Protocol (SNMP) is an "Internet-standard protocol for managing devices on IP networks". Devices that typically support SNMP include routers, switches, servers, workstations, printers, modem racks and more. It is used mostly in network management systems to monitor network-attached devices for conditions that warrant administrative attention.

  Syslog is a standard for computer message logging. It permits separation of the software that generates messages from the system that stores them and the software that reports and analyzes them.

• Question 584:

  A network administrator is tasked with deploying a company-wide wireless system which allows for accurate tracking of employees' wireless device locations via WAP triangulation. Which of the following is the MOST important aspect of the deployment?

  A. WAP placement

  B. TX/RX channel

  C. Signal strength

  D. Transmission power

  Correct Answer: A

  Before going ahead with the deployment, the first thing that need to be check is where you are going to place your wireless router so that you can have internet connectivity from every location that you need.

• Question 585:

  Which of the following is the BEST way to prevent new users from connecting to a wireless access point, but still allow already connected users to continue to connect?

  A. Create a MAC filter containing the current users.

  B. Turn off SSID broadcast.

  C. Change the encryption type to AES 256-bit for current users.

  D. Reduce the signal strength to 0 percent.

  Correct Answer: A

  MAC Filtering (or EUI filtering, or layer 2 address filtering) refers to a security access control method whereby the 48-bit address assigned to each network card is used to determine access to the network.

  MAC addresses are uniquely assigned to each card, so using MAC filtering on a network permits and denies network access to specific devices through the use of blacklists and whitelists. While the restriction of network access through the use of lists is straightforward, an individual person is not identified by a MAC address, rather a device only, so an authorized person will need to have a whitelist entry for each device that he or she would use to access the network.

• Question 586:

  A network technician is setting up a wireless access point that would only allow a certain laptop to be able to access the WAP. By using ACL, which of the following would be filtered to ensure only the authorized laptop can access the WAP?

  A. NetBIOS name filtering

  B. IP address filtering

  C. MAC address filtering

  D. Computer name filtering

  Correct Answer: C

  MAC Filtering (or EUI filtering, or layer 2 address filtering) refers to a security access control method whereby the 48-bit address assigned to each network card is used to determine access to the network.

  MAC addresses are uniquely assigned to each card, so using MAC filtering on a network permits and denies network access to specific devices through the use of blacklists and whitelists. While the restriction of network access through the use of lists is straightforward, an individual person is not identified by a MAC address, rather a device only, so an authorized person will need to have a whitelist entry for each device that he or she would use to access the network.

• Question 587:

  A user reports that several spots within the company's office have intermittent connectivity issues with the newly installed wireless network. There are several WAPs located around the office to provide a strong signal wherever the users are. Which of the following is the MOST likely cause of the problem?

  A. Incompatible network card

  B. Channel overlap

  C. Latency

  D. WEP encryption

  Correct Answer: B

  To reduce interference between wireless APs, ensure that wireless APs with overlapping signals use unique channel frequencies. The 802.11b standard reserves 14 frequency channels for use with wireless APs.

• Question 588:

  A customer is having problems connecting to a wireless network in a shared office space. The customer can detect several other wireless network signals. All of the wireless networks have different SSIDs but several are using the same encryption type.

  Which of the following should be configured on the customer's wireless network to improve connectivity to the wireless network?

  A. Change the SSID to match other wireless networks for increased throughput.

  B. Change the encryption type to a different mechanism to avoid interference.

  C. Change the channel to a different channel than the other wireless networks.

  D. Change the WAP to a different manufacturer than the other wireless networks.

  Correct Answer: C

  To reduce interference between wireless APs, ensure that wireless APs with overlapping signals use unique channel frequencies. The 802.11b standard reserves 14 frequency channels for use with wireless APs. You can use any other channel instead of the one that you are using.

• Question 589:

  Which of the following connectors is usable in SFP modules?

  A. ST

  B. LC

  C. LX

  D. SX

  Correct Answer: B

  LC connector is used in SFP modules.

  

• Question 590:

  Which of the following wiring distribution types, often found in company closets, is used to connect wiring from individual offices to the main LAN cabling?

  A. MDF

  B. 66 block

  C. IDF

  D. Patch panel

  Correct Answer: D

  A patch panel, patch bay, patch field or jack field is a number of circuits, usually of the same or similar type, which appear on jacks for monitoring, interconnecting, and testing circuits in a convenient, flexible manner.