CompTIA JK0-023 Online Practice Questions and Exam Preparation

CompTIA JK0-023 Online Questions & Answers

• Question 971:

  Which of the following standards can operate at either 20MHi or 40MHi channel spacing?

  A. 802.11a
  B. 802.11b
  C. 802.11g
  D. 802.11n
  D. 802.11n

• Question 972:

  A technician is troubleshootng a network camer

  A. The technician restarted the modem and now the camera is no longer available from a mobile device. Which of the following has MOST likely occurred?
  B. The public IP address of the network has changed.
  C. The camera has received a new frmware update.
  D. The camerans secure shell has been disabled.
  E. The router has changed the IP of the mobile device.
  A. The technician restarted the modem and now the camera is no longer available from a mobile device. Which of the following has MOST likely occurred?

• Question 973:

  Which of the following reside at a minimum of Layer 3 of the OSI model? (Select TWO).

  A. Hub
  B. Switch
  C. MAC address
  D. IP address
  E. Router
  D. IP address
  E. Router

• Question 974:

  Which of the following is a terminal emulator used to manage a network device?

  A. VPN
  B. IDS
  C. PuTTY
  D. IPS
  C. PuTTY

• Question 975:

  A network technician has confgured a new frewall with a rule to deny UDP trafc. Users have reported that they are unable to access Internet websites. The technician verifes this using the IP address of a popular website. Which of the following is the MOST likely cause of the error?

  A. Implicit deny
  B. HTTP transports over UDP
  C. Website is down
  D. DNS server failure
  A. Implicit deny

• Question 976:

  Several users are reportng connectvity issues with their laptops. Upon further investgatonf the network technician identfes that their laptops have been atacked from a specifc IP address outside of the network. Which of the following would need to be confgured to prevent any further atacks from that IP address?

  A. Port security
  B. IDS
  C. Firewall rules
  D. Switch VLAN assignments
  C. Firewall rules

• Question 977:

  Wireless network users recently began experiencing speed and performance issues afer access point 2 (AP2) was replaced due to faulty hardware. The original network was installed according to a consultantns specifcatons and has always

  worked without a problem.

  You a network technicianf have been tasked with evaluatng the situaton and resolving the issues to improve both performance and connectvity. Refer to the following diagram and perform any

  Necessary changes to the wireless and wired infrastructure by adjustng devices.

  NotE. Adjust the LEAST number of devices needed to fx the issue all blue icons in the image are clickable.

  

  

  

  Correct Answer. Check the answer below
  Check the answer below

  ---

  AP2 confguraton is not correct. The wireless mode should be

• Question 978:

  A network administrator decides to secure their small network by allowing only specifc MAC addresses to gain access to the network from specifc switches. Which of the following is described by this example?

  A. Packet fltering
  B. Hardware frewalls
  C. Port security
  D. Stateful inspecton
  C. Port security

• Question 979:

  Which of the following technologies allows more than two transceivers with an access point?

  A. MIMO
  B. FIFO
  C. 802.1x
  D. WPA
  A. MIMO

• Question 980:

  Which wireless standard works at a MAXIMUM data rate of up to 11Mbps?

  A. 802.11a
  B. 802.11b
  C. 802.11g
  D. 802.1q
  B. 802.11b