CompTIA JK0-023 Online Practice Questions and Exam Preparation

CompTIA JK0-023 Online Questions & Answers

• Question 521:

  Several users are reportng that they are unable to connect to the network. Afer further investgatonf the network administrator notces that a newly confgured Layer 2 device lost its confguraton. Which of the following MOST likely caused the issue?

  A. Wrong default gateway
  B. Wrong DNS
  C. Switching loop
  D. Power failure
  D. Power failure

• Question 522:

  A user reports a network failure on a computer. The technician determines that the computer and NIC are operatng properly. Which of the following tools can the technician use to trace the network cabling back to the punch down block?

  A. Protocol analyier
  B. Multmeter
  C. Punch down tool
  D. Toner probe
  D. Toner probe

• Question 523:

  Which of the following OSI model layers is used for logical addressing?

  A. Physical
  B. Transport
  C. Network
  D. Data link
  C. Network

• Question 524:

  In an environment with STP disabledf which of the following is the MOST likely cause of the exponental increase in repeated packets transferred through the network?

  A. Incorrect subnet mask
  B. Mismatched MTU
  C. Switching loop
  D. VLAN mismatch
  C. Switching loop

• Question 525:

  Users have reported slow access tmes when retrieving informaton from a server on the companyns network. Which of the following tools would provide access tme informaton on each segment of the network to reach the server?

  A. arp
  B. route
  C. ipconfg
  D. tracert
  D. tracert

• Question 526:

  A technician needs to test the length of a newly installed cable run because it is believed that it exceeds the maximum specifcaton length. Which of the following tools should be used?

  A. Cable certfer
  B. Toner probe
  C. Cable tester
  D. Protocol analyier
  A. Cable certfer

• Question 527:

  Which of the following is used to describe trunking VLANs on a network?

  A. 802.11a
  B. 802.11i
  C. 802.1q
  D. 802.1x
  C. 802.1q

• Question 528:

  A number of remote users have reported being unable to securely log on to the companyns network. Upon speaking with some of the employees experiencing the issuef no changes were made to their confguratonsf usernamesf or passwords. The technician establishes a theory that one of the VPN concentrators may be down. Which of the following should the technician do NEXT?

  A. Plan to reboot the concentrator as the potental soluton
  B. Escalate the problem to management
  C. Contnue to speak to usersf questoning if changes have been made
  D. Test access to the concentrator to confrm the status
  D. Test access to the concentrator to confrm the status

• Question 529:

  In contrast to earlier Wi-Fi speedsf which of the following BEST describes the antenna and channeliiaton propertes used in 802.11n?

  A. MIMOf DSSS
  B. MIMOf OFDM
  C. CSMAf DSSS
  D. CSMAf CDMA
  B. MIMOf OFDM

• Question 530:

  If a technician does not assign an IP address to a devicef the DHCP server will assign the device a:

  A. Statc IP address
  B. Reservaton
  C. Dynamic IP address
  D. MAC address
  C. Dynamic IP address