CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 301:

  A security appliance is blocking a DDoS attack on the network. Which of the following logs would be used to troubleshoot the traffic patterns trying to go across the network?

  A. IPS logs
  B. Application logs
  C. IDS logs
  D. History logs
  A. IPS logs

• Question 302:

  In contrast to earlier Wi-Fi speeds, which of the following BEST describes the antenna and channelization properties used in 802.11n?

  A. MIMO, DSSS
  B. MIMO, OFDM
  C. CSMA, DSSS
  D. CSMA, CDMA
  B. MIMO, OFDM

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  802.11n builds upon previous 802.11 standards by adding multiple-input multiple-output (MIMO). The additional transmitter and receiver antennas allow for increased data throughput through spatial multiplexing and increased range by exploiting the spatial diversity through coding schemes like Alamouti coding. The speed is 150 Mbit/s (even 250 Mbit/s in PHY level)

• Question 303:

  A user does not have network connectivity. While testing the cable the technician receives the below reading on the cable tester: 1-----------1 2-----------2 3-----------3 4-----------4 5-----------5 6-----------6 7-----------7 8-----------8 Which of the following should the technician do NEXT?

  A. Cable is a crossover, continue troubleshooting
  B. Pin 3 is not used for data, continue troubleshooting
  C. Pin 3 is not used for data, replace the NIC
  D. Redo the cable's connectors
  D. Redo the cable's connectors

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  Incomplete/Incorrect Question.

• Question 304:

  A user's network connection is slow. After testing the cabling, the cable tester shows that only pins 1, 2, 3 and 6 are being used. After accurately terminating both ends, the tester displays the same results. Which of the following is the MOST likely cause?

  A. DB loss on the cable
  B. Interference
  C. Split cable
  D. Distance limitations
  C. Split cable

• Question 305:

  Which of the following network topologies is ONLY possible between two users?

  A. Star
  B. Client-server
  C. Hybrid
  D. Peer-to-peer
  D. Peer-to-peer

• Question 306:

  Which of the following preventative measures would BEST secure a web server from being port scanned by attackers publicly?

  A. Content filter
  B. Proxy server
  C. ACL implicit allow
  D. Firewall
  D. Firewall

• Question 307:

  A network technician is troubleshooting signal problems with certain WAPs in an office and finds consistently high ping times across the units. Such an issue is called which of the following?

  A. Latency
  B. Attenuation
  C. Crosstalk
  D. Frequency hopping
  A. Latency

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  During the high ping time users are using most of the bandwidth that causes latency so signal strength get affected by this.

• Question 308:

  Which of the following technologies has more non-overlapping channels to utilize in a wireless LAN?

  A. 802.11a
  B. 802.11b
  C. 802.11i
  D. Bluetooth
  A. 802.11a

• Question 309:

  Which of the following describes a single computer that is setup specifically to lure hackers into revealing their methods, and preventing real attacks on the production network?

  A. Evil twin
  B. Honeypot
  C. DMZ
  D. Honeynet
  B. Honeypot

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  In computer terminology, a honeypot is a trap set to detect, deflect, or in some manner counteract attempts at unauthorized use of information systems.

• Question 310:

  An application server is placed on the network and the intended application is not working correctly. Which of the following could be used to make sure sessions are being opened properly?

  A. Antivirus scanner
  B. IDS
  C. Packet sniffer
  D. Toner probe
  C. Packet sniffer

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  Packet Sniffer is a tool that can help you locate network problems by allowing you to capture and view the packet level data on your network.So we can capture the session and find the cause of failure.