CompTIA CompTIA Mobility+ N10-005 Questions & Answers

• Question 421:

  Which of the following would be used to connect a singlemode fiber cable to a CAT6 connection?

  A. Media converter

  B. T1-crossover

  C. Multimode cable

  D. Coaxial

  Correct Answer: A

  Media converters support many different data communication protocols including Ethernet, Fast Ethernet, Gigabit Ethernet, T1/E1/J1, DS3/E3, as well as multiple cabling types such as coax, twisted pair, multi-mode and single-mode fiber optics.

• Question 422:

  Which of the following cable types supports the FURTHEST distance when connecting various MDFs?

  A. Multimode

  B. UTP

  C. Singlemode

  D. CAT6

  Correct Answer: C

  Single-mode optical fiber (SMF) is an optical fiber designed to carry only a single ray of light (mode). These modes define the way the wave travels through space, i.e. how the wave is distributed in space.

• Question 423:

  Which of the following connector types are used in terminating singlemode fiber cables? (Select TWO).

  A. LC

  B. F-connector

  C. DB-9

  D. BNC

  E. RJ-11

  F. SC

  Correct Answer: AF

  A variety of optical fiber connectors are available, but SC and LC connectors are the most common types of connectors on the market.[citation needed] Typical connectors are rated for 5001,000 mating cycles. The main differences among types of connectors are dimensions and methods of mechanical coupling. Generally, organizations will standardize on one kind of connector, depending on what equipment they commonly use. Different connectors are required for multimode, and for single-mode fibers

• Question 424:

  802.11n can operate at which of the following frequencies? (Select TWO).

  A. 2.4Mhz

  B. 2.5Mhz

  C. 5Mhz

  D. 2.4Ghz

  E. 2.5Ghz

  F. 5Ghz

  Correct Answer: DF

  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 425:

  A newly hired technician is sent to an alternate site to complete the build out of large scale LAN.

  Which of the following tools should the technician have on hand to install the bulk CAT6 cable? (Select TWO).

  A. Loopback plug

  B. Multimeter

  C. OTDR

  D. Crimper

  E. Cable tester

  F. TDR

  Correct Answer: DE

  A cable tester is an electronic device used to verify the source of electric current, voltage and a switching matrix used to connect the current source and the volt meter to all of the contact points in a cable.

• Question 426:

  Which of the following WAN technologies uses an analog phone line to transmit data?

  A. LTE

  B. DSL

  C. Satellite

  D. Cable

  Correct Answer: B

  DSL is a high-speed Internet service like cable Internet. DSL provides high-speed networking over ordinary phone lines using broadband modem technology. DSL technology allows Internet and telephone service to work over the same phone line without requiring customers to disconnect either their voice or Internet connections.

• Question 427:

  The network administrator installed a new dipole antenna that extends 100 feet (30.48 meters) from the existing AP. All components are correct, functional, and installed properly. However, during validation, there is a very weak signal coming from the antenna.

  Which of the following is the MOST likely cause of the issue?

  A. The installation exceeds the link limitations

  B. The antenna is mounted for vertical polarization

  C. The dBi output of the antenna is too low

  D. The radio is too powerful for the installation

  Correct Answer: A

  Unlike isotropic antennas, dipole antennas are real antennas. Dipole antennas have a different radiation pattern compared to isotropic antennas. The dipole radiation pattern is 360 degrees in the horizontal plane and 75 degrees in the vertical plane (assuming the dipole antenna is standing vertically) and resembles a donut in shape. Because the beam is "slightly" concentrated, dipole antennas have a gain over isotropic antennas of 2.14 dB in the horizontal plane. Dipole antennas are said to have a gain of 2.14 dBi (in comparison to an isotropic antenna).

• Question 428:

  Which of the following is the Telco end of a T1 demarc?

  A. Smart jack

  B. Network tap

  C. Proxy server

  D. IDF

  Correct Answer: A

  Smartjacks provides diagnostic capabilities. A very common capability provided by a smartjack is loopback, such that the signal from the telephone company is transmitted back to the telephone company. This allows the telephone company to test the line from the central office, without the need to have test equipment at the customer site. The telephone company usually has the ability to remotely activate loopback, without even needing personnel at the customer site. When looped back, the customer equipment is disconnected from the line.

• Question 429:

  Multiple networked devices running on the same physical hardware that provide central access to applications and files, where each device runs as a piece of software are known as:

  A. Virtual desktops.

  B. Switches.

  C. PBXs.

  D. Virtual servers.

  Correct Answer: D

  A Virtual server, usually a Web server, that shares computer resources with other virtual servers. In this context, the virtual part simply means that it is not a dedicated server -- that is, the entire computer is not dedicated to running the server software

• Question 430:

  Which of the following WAN technology types has the GREATEST latency?

  A. ISDN

  B. Fiber

  C. Satellite

  D. Cable

  Correct Answer: C

  Because satellites provide a microwave radio relay technology complementary to that of communication cables. They are also used for mobile applications such as communications to ships, vehicles, planes and hand-held terminals, and for TV and radiobroadcasting.