CompTIA CompTIA A+ 220-801 Questions & Answers

• Question 631:

  Which of the following laptop displays would provide physical flexibility and transparency?

  A. Standard LCD

  B. Plasma

  C. OLED

  D. LED-backlit LCD

  Correct Answer: C

  Reference. http://en.wikipedia.org/wiki/Flexible_organic_light-emitting_diode

• Question 632:

  A technician needs to replace an internal component on a laptop. Which of the following would be an important step to perform BEFORE replacing the component?

  A. Review manufacturer's documentation for disassembly procedures

  B. Remove all screws from the bottom of the case

  C. Remove the display and all attached wiring from the base

  D. Ensure that the battery has a full charge

  Correct Answer: A

  Before replacing an internal component on a laptop, it is advised to review manufacturer's documentation and check disassembly procedures.

• Question 633:

  Which of the following network devices would BEST be used to replace a hub?

  A. Firewall

  B. Modem

  C. Switch

  D. Bridge

  Correct Answer: C

• Question 634:

  Which of the following is the number of octets in an IPv4 address?

  A. 4

  B. 8

  C. 16

  D. 64

  Correct Answer: A

• Question 635:

  Which of the following is an advantage of dynamic addressing?

  A. To allow hosts with different subnet masks to communicate

  B. To prevent host computers from staying at one address

  C. To allow easy addition of new hosts to the network

  D. To allow hosts to use multiple addresses at the same time

  Correct Answer: C

• Question 636:

  Which of the following describes a network topology MOST commonly used in a SOHO switched network?

  A. Mesh

  B. Hybrid

  C. Bus

  D. Star

  Correct Answer: D

• Question 637:

  A technician is making RJ-45 patch cables. Which of the following tools will the technician use to terminate the cable ends?

  A. Crimper

  B. Punchdown tool

  C. Multimeter

  D. Loopback plug

  Correct Answer: A

• Question 638:

  Which of the following wireless standards has a transfer speed of 11 Mbps?

  A. 802.11a

  B. 802.11b

  C. 802.11g

  D. 802.11n

  Correct Answer: B

• Question 639:

  Which of the following connection types uses an analog signal as a carrier to send and receive data?

  A. Cellular

  B. Dial-up

  C. Satellite

  D. WiMAX

  Correct Answer: B

• Question 640:

  When using the file transfer protocol in active mode, which of the following ports is used to transfer a file?

  A. 20

  B. 23

  C. 25

  D. 115

  Correct Answer: A