CompTIA CompTIA Mobility+ N10-005 Questions & Answers

• Question 441:

  Which of the following cable types is required to run through an air duct?

  A. UTP

  B. Fiber

  C. PVC

  D. Plenum

  Correct Answer: D

  Plenum rated cable has a special insulation that has low smoke and low flame characteristics. Plenum cable is mandated to be installed in any "air handling" space. For example, most large office buildings use the ceiling to return air to the AC unit. This qualifies this ceiling as a plenum ceiling, and all the cables that go through that ceiling must be plenum rated.

• Question 442:

  Which of the following connectors are MOST commonly used on a POTS line?

  A. RJ-45

  B. MTRJ

  C. DB-9

  D. RJ-11

  Correct Answer: D

  The six-position plug and jack commonly used for telephone line connections may be used for RJ11, RJ14 or even RJ25, all of which are actually names of interface standards that use this physical connector. The RJ11 standard dictates a 2wire connection, while RJ14 uses a 4-wire configuration, and RJ25 uses all six wires. The RJ abbreviations, though, only pertain to the wiring of the jack (hence the name "registered jack"); it is commonplace but not strictly correct to refer to an unwired plug connector by any of these names. Typically you'll find the RJ-11 and RJ-14 on your Plain Old Telephone Service (POTS)

• Question 443:

  Which of the following WAN technologies has the HIGHEST latency?

  A. ADSL

  B. LTE

  C. Satellite

  D. WiMAX

  Correct Answer: C

  Satellite WAN latency is the delay caused by the physical distance a signal must travel from earth, to the satellite, and back to earth to complete a round-trip transmission. Because of the physics involved in the round-trip-time (RTT), end-toend latency can take 600 milliseconds or more due to geosynchronous satellites orbiting miles above the earth.

• Question 444:

  Ann, a home user, wishes to confine a wireless network to devices ONLY inside of her house. Which of the following will accomplish this?

  A. Decreasing radio strength

  B. MAC filtering

  C. WEP encryption

  D. SSID broadcast disable

  Correct Answer: A

  Decreasing Radio Strength will reduce signal strength outside the house and will accomplish what she is intending to do.

• Question 445:

  Which of the following supports faster wireless broadband speeds?

  A. Satellite

  B. Wi-MAX

  C. ISDN

  D. OC-3

  Correct Answer: B

  Wi-MAX (Worldwide Interoperability for Microwave Access) is a wireless communications standard designed to provide 30 to 40 megabit-per-second data rates with the 2011 update providing up to 1 G bit/s for fixed stations

• Question 446:

  Which of the following network topologies describes a network where each node is connected to every other node?

  A. Bus

  B. Star

  C. Mesh

  D. Ring

  Correct Answer: C

  In a true mesh topology every node has a connection to every other node in the network.

• Question 447:

  Multiple computers are connected to a hub near a wall plate. In order to get to the computers, students step on and around the cable that connects the teacher's station, a few feet away, to the same hub. The teacher is experiencing no network connectivity.

  Which of the following is MOST likely the problem?

  A. Cross-talk

  B. Split cables

  C. Distance

  D. EMI

  Correct Answer: B

  A split cable is invisible to wire maps and continuity testers, making it very difficult to troubleshoot.

• Question 448:

  A Chief Executive Officer (CEO) decided that only a limited number of authorized company workstations will be able to connect to the Internet. Which of the following would BEST accomplish this goal?

  A. Use content filtering

  B. Install and configure IDS

  C. Enable MAC address filtering

  D. Enable RAS on the network firewall

  Correct Answer: C

  Most Wi-Fi access points and routers ship with a feature called hardware or MAC address filtering. This feature is normally turned "off" by the manufacturer, because it requires a bit of effort to set up properly. However, to improve the security of your Wi-Fi LAN (WLAN), strongly consider enabling and using MAC address filtering.

• Question 449:

  The ISP needs to terminate the WAN connection. The connection should be located in the network server room where the company LAN equipment resides. Which of the following identifies the location?

  A. Smart jack

  B. MDF

  C. VPN

  D. 66 block

  Correct Answer: B

  Short for main distribution frame, a cable rack that interconnects and manages the telecommunications wiring between itself and any number of IDFs. Unlike an IDF, which connects internal lines to the MDF, the MDF connects private or public lines coming into a building with the internal network.

• Question 450:

  Which of the following defines a rack located in an office building between the main rack and other office equipment?

  A. DSU

  B. MDF

  C. CSU

  D. IDF

  Correct Answer: D

  An intermediate distribution frame (IDF) is a distribution frame in a central office or customer premises, which cross-connects the user cable media to individual user line circuits and may serve as a distribution point for multipair cables from the main distribution frame (MDF) or combined distribution frame (CDF) to individual cables connected to equipment in areas remote from these frames.

  IDFs are used for telephone exchange central office, customer-premise equipment, wide area network (WAN), and local area network (LAN) environments, among others.