CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 41:

  Which of the following will allow a technician to monitor all network traffic when connected to a mirror port?

  A. VLAN tags
  B. SNMP
  C. Packet sniffer
  D. Syslog
  C. Packet sniffer

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  Mirror port just send the packet to the port which is selected to grab the packet of any destination port to capture that packets we need packet sniffer.

• Question 42:

  A technician has received a trouble ticket from a user who has intermittent wireless access. Moving the computer farther from the WAP results in a more stable connection. Which of the following is MOST likely the cause of this instability?

  A. Wrong encryption type
  B. SSID mismatch
  C. Signal bounce
  D. Incorrect channel
  C. Signal bounce

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  Bouncing is the tendency of any two metal contacts in an electronic device to generate multiple signals as the contacts close or open.

• Question 43:

  Which of the following components of wiring distribution is referred to as the core communications closet for an organization?

  A. MDF
  B. Smart jack
  C. IDF
  D. Demarc extension
  A. MDF

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  MDF stands for Main Distribution Frame and is the main computer room for servers, hubs, routers, DSL's, etc. to reside.

• Question 44:

  A network administrator currently collects log files from several different servers. Which of the following would allow the network administrator to collect log files on a centralized host?

  A. The network administrator should install and configure a traffic analysis server.
  B. The network administrator should install and configure a DMZ server.
  C. The network administrator should install and configure a syslog server.
  D. The network administrator should install and configure a network sniffer.
  C. The network administrator should install and configure a syslog server.

• Question 45:

  A network administrator has just been notified about the loss of Internet connectivity. Another technician had just performed non-scheduled maintenance and mentioned that some cabling may have been moved. Which of the following MOST likely caused the loss of Internet connectivity?

  A. Broadcast storm
  B. TX/RX cables reversed
  C. Mismatched MTU
  D. Incorrect routing table
  B. TX/RX cables reversed

• Question 46:

  Which of the following network performance optimization methods allows for frequently accessed sites to be housed locally, thereby reducing bandwidth requirements?

  A. Load balancing
  B. Traffic policing
  C. Caching engines
  D. Traffic shaping
  C. Caching engines

• Question 47:

  Which of the following wireless standards has a MAXIMUM transfer rate of 11Mbps?

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

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  The 802.11b standard allows for a maximum data transfer speed of 11 Mbps, at a range of about 100 m indoors and up to 200 metres outdoors (or even beyond that, with directional antennas.) Hypothetical speed Range(indoors) Range(outdoors) 11 Mbits/s 50 m 200 m

  5.5 Mbits/s 75 m 300 m 2 Mbits/s 100 m 400 m 1 Mbit/s 150 m 500 m

• Question 48:

  A forward lookup zone converts which of the following?

  A. IP addresses to hostnames
  B. Hostnames to IP addresses
  C. MAC addresses to IP addresses
  D. IP Addresses to MAC addresses
  B. Hostnames to IP addresses

• Question 49:

  A company would like to use the enterprise RADIUS server to authenticate and identify their secure wireless users. Which of the following standards should the company use to facilitate this?

  A. Stateful inspection
  B. WEP
  C. WPA
  D. Open with EAP
  C. WPA

• Question 50:

  Which of the following are considered AAA authentication methods? (Select TWO).

  A. Kerberos
  B. Radius
  C. MS-CHAP
  D. TACACS+
  E. 802.1X
  B. Radius
  D. TACACS+