CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 321:

  An administrator needs to open ports in the firewall for both DNS and eDNS. Which of the following default ports would need to be opened on the firewall? (Select TWO).

  A. TCP 23
  B. TCP 53
  C. TCP 123
  D. UDP 23
  E. UDP 53
  F. UDP 123
  B. TCP 53
  E. UDP 53

• Question 322:

  A company needs to find a way to best route latency-sensitive traffic appropriately on an already congested network. Which of the following would be BEST suited for this purpose?

  A. QoS
  B. PPPoE
  C. RADIUS
  D. VPN
  A. QoS

• Question 323:

  A small business owner is setting up a SOHO office. The business owner needs one device that will allow for Internet access, trunk VLANs, translate multiple private IP addresses into public IP addresses, and filter packets. Which of the following network devices will allow for all functions?

  A. A VPN concentrator
  B. A switch
  C. A router
  D. A firewall
  C. A router

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  A router is a device which is capable of performing entire task required by the business owner.

• Question 324:

  Joe, a network technician, is implementing a wireless network and needs to support legacy devices. He has selected to use WPA mixed mode. WPA mixed mode is normally implemented with which of the following encryption factors? (Select TWO).

  A. SSH
  B. 3DES
  C. AES
  D. SSL
  E. TLS
  F. TKIP
  C. AES
  F. TKIP

• Question 325:

  Which of the following is an example of a Class C address?

  A. 10.19.0.79
  B. 127.34.8.197
  C. 176.96.1.222
  D. 192.168.1.105
  D. 192.168.1.105

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  Class C address range varies from 192.0.0.0 to 223.255.255.255.

• Question 326:

  Which of the following is the default authentication method for a Windows client using PPP over a dialup connection?

  A. TACACS+
  B. WINS
  C. Kerberos
  D. MS-CHAP
  D. MS-CHAP

• Question 327:

  Which of the following WAN technologies utilizes an optical SONET carrier and has a maximum bandwidth of 155.54Mbps?

  A. DS3
  B. E3
  C. OC3
  D. T3
  C. OC3

• Question 328:

  Which of the following allows a malicious attacker to view network traffic if the attacker is on the same network segment as Joe, an administrator?

  A. DoS attack
  B. Man-in-the-middle attack
  C. Smurf attack
  D. Xmas attack
  B. Man-in-the-middle attack

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  An attack where a user gets between the sender and receiver of information and sniffs any information being sent. In some cases, users may be sending unencrypted data, which means the man-in-the-middle (MITM) can obtain any unencrypted information. In other cases, a user may be able to obtain information from the attack, but have to unencrypt the information before it can be read.

• Question 329:

  Which of the following STP states indicates an inactivated port due to a loop?

  A. Disabled
  B. Learning
  C. Blocking
  D. Forwarding
  C. Blocking

• Question 330:

  A technician has determined that calls placed over a wireless connection are breaking up and the speaker's voices are delayed. This is making conversation difficult. This is a symptom of which of the following network issues?

  A. Latency
  B. Bad GBIC
  C. Bad SFP
  D. SSID mismatch
  A. Latency