CompTIA JK0-023 Online Practice Questions and Exam Preparation

CompTIA JK0-023 Online Questions & Answers

• Question 121:

  Kurtf a network administratorf needs to purchase a new switch to support VoIP phones and wireless access points in a new building. Which of the following features are the MOST important for the new switch to support?

  A. PoE and QoS
  B. LACP and OSPF
  C. 802.1x and 802.11n
  D. NAT and VTP
  A. PoE and QoS

• Question 122:

  A user is unable to open up websites on the Internet from a browser. The administrator determines that the workstaton can ping its local gatewayf but not the remote web server. At which of the following layers of the OSI model does the problem MOST likely exist?

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

• Question 123:

  A network administrator notces that load balancing is not working properly on the web cluster as previously confgured. In speaking with managementf a change to the IP addressing scheme was made yesterday which possibly afected one member of the cluster. Due to the tming of the eventsf the administrator theoriies that this change caused the problem. Which of the following should the administrator do NEXT?

  A. Escalate to the management team
  B. Change the IP address back to its previous state
  C. Test the theory by analyiing logs
  D. Create a plan of acton to present to management
  C. Test the theory by analyiing logs

• Question 124:

  Which of the following is a packet switching WAN technology?

  A. Frame relay
  B. T1
  C. Asynchronous transfer mode
  D. ISDN
  A. Frame relay

• Question 125:

  Which of the following protocols is used to transmit outgoing email?

  A. RDP
  B. NTP
  C. POP3
  D. SMTP
  D. SMTP

• Question 126:

  An administrator would like to inspect all trafc fowing over the SMTP protocol on a given network. Which of the following tools would accomplish this? (Select TWO).

  A. Packet snifer
  B. Honeypot
  C. Port mirroring
  D. IPS
  E. Port scanner
  F. IDS
  A. Packet snifer
  C. Port mirroring

• Question 127:

  Which of the following should be implemented in a networked environment carrying teleconferencing packets?

  A. L2TP
  B. SSH
  C. QoS
  D. SNMP
  C. QoS

• Question 128:

  Kimf a userf reports that the web browser is indicatng the site certfcate is not trusted. Which of the following atacks may be in progress?

  A. Man-in-the-middle
  B. Denial of service
  C. Ping fooding
  D. Smurfng
  A. Man-in-the-middle

• Question 129:

  Tenants access multple wireless networks in a building. Users report intermitent connectvity. Which of the following is the MOST likely cause of the problem?

  A. The channels are overlapping with other wireless networks and should be changed.
  B. The SSIDs are incompatble and should be renamed.
  C. The users have incompatble wireless network cards and should upgrade.
  D. The default idle period for logof is too short and should be changed to a longer limit.
  A. The channels are overlapping with other wireless networks and should be changed.

• Question 130:

  A technician is installing a switch that will be used for VoIP and data trafc. The phones do not support the 802.3af standard. Which of the following should the technician confgure on the switch?

  A. VLAN
  B. PoE
  C. VTP
  D. QoS
  D. QoS