CompTIA CompTIA Mobility+ N10-005 Questions & Answers

• Question 411:

  An administrator needs to install a WAP in a location where there is no electrical wiring. Which of the following should the administrator use to complete a successful installation?

  A. Coaxial

  B. Wireless bridge

  C. PoE

  D. Multimode fiber

  Correct Answer: C

  PoE provides both data and power connections in one cable, so equipment doesn't require a separate cable for each need.

• Question 412:

  Which of the following technologies is used to connect public networks using POTS lines?

  A. OC3

  B. OC12

  C. PSTN

  D. Cable

  Correct Answer: C

  The PSTN consists of telephone lines, fiber optic cables, microwave transmission links, cellular networks, communications satellites, and undersea telephone cables, all interconnected by switching centers, thus allowing any telephone in the world to communicate with any other

• Question 413:

  Which of the following technologies allows multiple staff members to connect back to a centralized office?

  A. Peer to Peer

  B. VPN

  C. PKI

  D. VLAN

  Correct Answer: B

  VPN enables a computer to send and receive data across shared or public networks as if it were directly connected to the private network, while benefiting from the functionality, security and management policies of the private network. This is done by establishing a virtual point-to-point connection through the use of dedicated connections, encryption, or a combination of the two.

• Question 414:

  Which of the following technologies is used on cellular networks?

  A. Ethernet

  B. CDMA

  C. CSMA/CA

  D. POTS

  Correct Answer: B

  CDMA is an example of multiple access, which is where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies (see bandwidth). To permit this to be achieved without undue interference between the users CDMA employs spread-spectrum technology and a special coding scheme

• Question 415:

  While preparing to replace an old CAT3 cable with a CAT6 cable to implement VoIP, a facilities employee mistakenly disconnects the entire patch panel, including valid wiring to live workstations. Which of the following should an administrator use in order to connect those ports FIRST?

  A. Toner

  B. Multimeter

  C. Reflectometer

  D. Cable tester

  Correct Answer: A

  Toner?connects to any voice, data, or video cable to detect open/short circuits, continuity, AC/DC voltage* and dial tone* all while protecting up to 52 volt.

• Question 416:

  A network administrator is deploying a new wireless network with over 50 thin WAPs and needs to ensure all WAPs use consistent firmware and settings. Which of the following methods provides this functionality?

  A. Use WAP auto-configuration

  B. Use a wireless controller

  C. Use PXE to load and track WAPs

  D. Use DHCP scope options

  Correct Answer: B

  A wireless controller is used in combination with the Lightweight Access Point Protocol (LWAPP) to manage light-weight access points in large quantities by the network administrator or network operations center. The wireless LAN controller is part of the Data Plane within the Cisco Wireless Model. The WLAN controller automatically handles the configuration of anywhere from 6 to 6000 wireless access-points, depending on the model.

• Question 417:

  Which of the following is the MAXIMUM potential speed of CAT5e UTP cable?

  A. 10BaseT

  B. 100BaseT

  C. 100BaseFX

  D. 1000BaseT

  Correct Answer: D

  Category 5 e cable (Cat 5) is a twisted pair cable for carrying signals. This type of cable is used in structured cabling for computer networks such as Ethernet. The cable standard provides performance of up to 100 MHz and is suitable for 10BASE-T, 100BASE-TX (Fast Ethernet), and 1000BASE-T (Gigabit Ethernet).

• Question 418:

  Which of the following wireless standards would BEST allow a company to utilize new and old devices on the 5GHz spectrum while allowing for the highest possible speeds?

  A. A

  B. B

  C. G

  D. N

  Correct Answer: D

  802.11n is an amendment which improves upon the previous 802.11 standards by adding multiple-input multiple-output antennas (MIMO). 802.11n operates on both the 2.4 GHz and the lesser used 5 GHz bands

• Question 419:

  A network administrator tests a multimode fiber cable from end-to-end on a new link that is down and notices that the dB loss is -.09.

  Which of the following is the MOST likely cause?

  A. TXRX reversed

  B. dB loss too high

  C. dB loss too low

  D. Bad connectors

  Correct Answer: A

  Some Ethernet switches support medium dependent interface crossover (MDIX),which allows a switch port to properly configure its leads as transmit (Tx) or receive (Rx) leads. You can interconnect such switches with a straight-through cable (as opposed to a crossover cable). However, if a network device does not support MDIX, it needs an appropriate cable (that is, a crossover cable ) to allow its Tx leads to connect to the Rx leads on a connected device, and vice versa. Therefore, care must be taken when selecting cable types interconnecting network components.

• Question 420:

  A small office client is requesting a network redesign. Both wired and wireless devices must connect to the network. All of the wireless devices can communicate using the latest standards. The building has a long courtyard in the middle with reinforced walls, which extends up through all the floors. The distance from the switch to the furthest drop is 88 meters.

  Which of the following is the correct network redesign choice?

  A. Fiber optic cabling is necessary due to distance limitations.

  B. The wireless network should be 802.11b due to equipment limitations.

  C. One WAP will be sufficient to provide wireless coverage to the floor.

  D. The wired network should be run with at least CAT6 cabling.

  Correct Answer: D

  The Category 6 cable, also known as Cat-6, is backward compatible with the Category 5/5 e and Category 3 cable standards. It can create a high speed computer network and operate at an optimal performance if other components in the

  network are compatible with gigabit speeds.

  AdvantagE. Speed and Performance

  The cable can handle speed performance of up to 250 MHZ. This fast performance makes it possible to use with a fast ethernet network including Gigabit Ethernet and 10-Gigabit Ethernet.

  The whole generation of the Cat 6 cable was introduced to complement the Gigabit Ethernet which includes interface cards, patch panels, routers, switches, and other components which is developed to achieve a full gigabit network. Many IT

  professionals realized that the Cat 6 cable provide very fast network performance and can deliver gigabit speeds.

  AdvantagE. Similar Structure with Cat 5 Cable

  Cat 6 cable has a similar structure to the Cat 5 and Cat 5e. The Cat 6, Cat 5 and Cat 5e cables have 8 wires that are twisted together to form four pairs. The difference is that one pair of the wires in the Cat 6 cable is kept from contacting with

  others so that it can produce double the bandwidth of the Cat 5 and Cat 5e.

  AdvantagE. Backward Compatible

  The plug and port of the Cat 6 cable is the same as the Cat 5 and Cat 5e. Therefore, it can be plugged into any port or connection that supports both of those cables. If you use the Cat 5 port, it will not yield the full speed that it is capable of

  handling. Instead, it will operate at the speed of the computer or cable. However, the speed will be acceptable.

  AdvantagE. Upgradable

  If upgrading to a more optimal network, the Cat 6 cable should be included in part of the upgrade. The Cat 6 cable will not operate at the full speed if other units in the network does not

  support gigabit speeds. Small businesses that are starting should consider installing the Cat 6 cable since it is becoming the industry standard.