CompTIA CompTIA A+ 220-801 Questions & Answers

• Question 751:

  Which of the following is the number of bits that comprises an IPv6 address?

  A. 32

  B. 64

  C. 128

  D. 256

  Correct Answer: C

  Reference. http://en.wikipedia.org/wiki/IPv6

• Question 752:

  Which of the following cables uses both the T568A and T568B standards?

  A. Ethernet

  B. Fiber

  C. Coaxial

  D. HDMI

  Correct Answer: A

  Reference. http://www.ertyu.org/steven_nikkel/ethernetcables.html

• Question 753:

  Which of the following is the subnet mask for a Class C IP address?

  A. 10.0.0.1

  B. 192.168.1.1

  C. 255.255.0.0

  D. 255.255.255.0

  Correct Answer: D

  Reference. http://www.planix.com/~woods/classc.html

• Question 754:

  Which of the following is a private class B IP address?

  A. 10.0.15.1

  B. 172.16.0.1

  C. 172.33.1.1

  D. 192.168.1.1

  Correct Answer: B

  Reference. http://www.sqa.org.uk/e-learning/WebTech01CD/page_12.htm

• Question 755:

  Which of the following is the strongest wireless encryption method?

  A. WPA2 AES

  B. WEP

  C. WPA2 TKIP

  D. WPA

  Correct Answer: A

  Reference. http://cybercoyote.org/classes/wifi/wpa2.shtml

• Question 756:

  Which of the following network devices would a client use to store data?

  A. Access point

  B. Bridge

  C. Firewall

  D. NAS

  Correct Answer: D

  Reference. http://en.wikipedia.org/wiki/Network-attached_storage

• Question 757:

  Which of the following channels, when used in close proximity to one another, provide the BEST protection against crosstalk?

  A. 1 and 11

  B. 2 and 10

  C. 6 and 1

  D. 6 and 11

  Correct Answer: A

  Reference. http://www.dci.ca/?Section=ProductsandSubSection=WiFi-FAQ

• Question 758:

  Which of the following network devices uses NAT to convert private IP addresses into public IP addresses?

  A. NAS

  B. Firewall

  C. Hub

  D. Bridge

  Correct Answer: B

  Reference. http://superuser.com/questions/409404/why-do-we-have-nat-if-we-could- just-assign-a-public-ip-address

• Question 759:

  Joe, a customer, states that since the new firewall has been installed, he has not been able to send email. Which of the following ports on the firewall should be checked?

  A. 21

  B. 25

  C. 110

  D. 443

  Correct Answer: B

  Reference. http://help.telecom.co.nz/app/answers/detail/a_id/1218/~/what-is-port-25- and-why-is-it-important-for-me%3F

• Question 760:

  Which of the following is an example of a Class A IP address?

  A. 10.4.0.1

  B. 169.254.0.1

  C. 192.168.17.3

  D. 254.200.53.5

  Correct Answer: A

  Reference. http://www.bleepingcomputer.com/tutorials/ip-addresses-explained/