CompTIA CompTIA Certifications JK0-023 Questions & Answers

• Question 161:

  Which of the following DNS records must be queried to resolve the IPv6 address of a website?

  A. CNAME

  B. PTR

  C. AAAA

  D. A

  Correct Answer: C

• Question 162:

  Which of the following is a fber connector that is slightly smaller than a standard copper network cable connector?

  A. BNC

  B. GBIC

  C. MT-RJ

  D. SC

  Correct Answer: C

• Question 163:

  A consultant is installing new WAPs for an ofce using wall mounts. Which of the following is the BEST locaton for the new boxes for signal strength and coverage?

  A. Above the suspended ceiling with antennas positoned upward.

  B. Close to the foor level to allow the signal to traverse the foor laterally.

  C. Close to the suspended ceilingf but not above.

  D. Above the suspended ceiling with antennas positoned downward.

  Correct Answer: C

• Question 164:

  Using source port numbers as a way to keep track of connectons is a characteristc of which of the following protocols?

  A. TCP

  B. UDP

  C. NAT

  D. PAT

  Correct Answer: D

• Question 165:

  Which of the following wireless standards can transmit data up to 540Mbps?

  A. 802.11a

  B. 802.11b

  C. 802.11g

  D. 802.11n

  Correct Answer: D

• Question 166:

  A user calls the helpdesk to report not being able to access network resources over the companyns Wi-Fi connecton. During informaton gatheringf the user mentons that the wireless network their computer is signed into is not the same name as it had been previously. Which of the following is the underlying cause?

  A. SSID mismatch

  B. Incorrect WPA key

  C. Signal bounce

  D. Antenna placement

  Correct Answer: A

• Question 167:

  Which of the following cable types is unshielded?

  A. STP

  B. Twinax

  C. UTP

  D. Coax

  Correct Answer: C

• Question 168:

  A network administrator has been assigned the 192.168.2.64/26 network and assigns the following computerns IP addresses:

  192.168.2.70

  192.168.2.100

  192.168.2.125

  192.168.2.130

  When the administrator tries to ping the other computers from 192.168.2.130f an ECHO REPLY is not received. Which of the following must the network administrator do?

  A. Change the IP of 192.168.2.130 to 192.168.1.128.

  B. Change the IP of 192.168.2.130 to 192.168.2.126.

  C. Change the default gateway of 192.168.2.130 accordingly.

  D. Reconfgure the switch for the right VLAN.

  Correct Answer: B

• Question 169:

  An administrator is troubleshootng analog telephony issues on the punch down block. Which of the following tools would be MOST useful in this scenario?

  A. T1 loopback

  B. But set

  C. Multmeter

  D. Protocol analyier

  Correct Answer: B

• Question 170:

  An administrator has received a recommendaton against deploying WEP as a wireless encrypton protecton scheme. Which of the following is MOST likely the reason?

  A. WEP's IV is too small.

  B. WEP uses RC4 which is easily accessible and not secure.

  C. WEP uses plain text.

  D. WEP is not well supported.

  Correct Answer: A