Exam Details

  • Exam Code
    :JK0-023
  • Exam Name
    :CompTIA Network+
  • Certification
    :CompTIA Certifications
  • Vendor
    :CompTIA
  • Total Questions
    :1112 Q&As
  • Last Updated
    :Apr 12, 2025

CompTIA CompTIA Certifications JK0-023 Questions & Answers

  • Question 901:

    Jeff a customerf shares a building with several other tenants. He reports that an unencrypted wireless network has been getng slower while his Internet trafc has steadily been increasing. Which of the following should be confgured to resolve this problem?

    A. VLAN

    B. MTU

    C. WPA

    D. SSID

  • Question 902:

    Which of the following is an example of a DHCP failover mechanism?

    A. APIPA

    B. Inactve lease

    C. Reservatons

    D. Actve lease

  • Question 903:

    Jeff a technicianf is setng up an IDS security device. Which of the following should be confgured on the switch to utliie the IDS?

    A. PoE

    B. Port mirroring

    C. Convergence

    D. Port speed

  • Question 904:

    Kimf a network technicianf is installing a new managed 10/100 Mbps switch on the network. The network has an older printer with a 10Mbps network adapter that will be moved to the new switch. Which of the following setngs on the switch will need to be confgured to support the printer?

    A. MAC fltering

    B. IP address

    C. PoE

    D. Port speed

  • Question 905:

    Which of the following defnes the range of IP addresses a DHCP server can assign?

    A. Scope

    B. Lease

    C. Reservaton

    D. Subnet

  • Question 906:

    A company has decided to increase wireless infrastructure security by moving from WEP encrypton to WPA2. Technicians change each WAP to the new encrypton standard and users are given the new passwords. Many users are able to reconnect using the new authentcatonf but several users report an inability to reconnect. Which of the following is the MOST likely cause of the problem?

    A. The users who cannot connect are using older NICs without WPA2 support.

    B. The users who cannot connect are in areas without wireless coverage.

    C. The users who cannot connect have not been placed in the correct VLAN.

    D. The users who cannot connect have not specifed the correct signal strength.

  • Question 907:

    Kimf a network administratorf needs to add an additonal connecton to a room. She adds a new Ethernet switch and must connect it to an existng switch. Which cable type should Kim use to connect the two switches?

    A. CAT3 cable

    B. Serial cable

    C. Crossover cable

    D. Rollover cable

  • Question 908:

    Which of the following has to be defned to guarantee a computer always has a private IP address of 10.4.0.5?

    A. Scope

    B. Lease

    C. Reservaton

    D. Dynamic IP addressing

  • Question 909:

    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

  • Question 910:

    Jeff a customerf wants to have wireless network access only in the conference room. He has placed a WAP in the roomf but notces that ofces across the hall also receive a wireless signal. Which of the following could be done together to solve this problem? (Select TWO).

    A. Turn down the signal gain.

    B. Increase the encrypton method.

    C. Change the wireless channel.

    D. Replace the WAPns antennas with directonal antennas.

    E. Disable the SSID.

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