CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 21:

  The protocol SNMP uses which of the following ports by default?

  A. 53
  B. 61
  C. 67
  D. 161
  D. 161

• Question 22:

  Which of the following should be mitigated by employing proper coding techniques when developing software?

  A. Distributed denial of service attacks
  B. Buffer overflows
  C. War driving
  D. Packet sniffing
  B. Buffer overflows

• Question 23:

  Which of the following devices can be utilized to monitor and block websites accessible by a company?

  A. WINS server
  B. DNS server
  C. Content filter
  D. Reverse proxy
  C. Content filter

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  On the Internet, content filtering (also known as information filtering) is the use of a program to screen and exclude from access or availability Web pages or e-mail that is deemed objectionable. Content filtering is used by corporations as part of Internet firewall computers and also by home computer owners, especially by parents to screen the content their children have access to from a computer.

• Question 24:

  

  Workstations are unable to access the internet after a recent power outage. Configure the appropriate devices to ensure All workstations have internet connectivity.

  Correct Answer. The switches are not connected properly. Connect Switch 1 to switch three on the last port and then connect the last port of the switch 3 to the first port of switch 2. In this way the switches will be connected properly. Click Enable All to enable the switches
  The switches are not connected properly. Connect Switch 1 to switch three on the last port and then connect the last port of the switch 3 to the first port of switch 2. In this way the switches will be connected properly. Click Enable All to enable the switches

• Question 25:

  Which of the following wiring components is used as a central point of termination for all network jacks through a building area?

  A. Demarc
  B. CSU
  C. Patch Panel
  D. Smart Jack
  C. Patch Panel

• Question 26:

  Which of the following syslog severity codes indicates an emergency and that the system is unusable?

  B. 1
  C. 6
  D. 7
  A

• Question 27:

  The components of a NIC function at which of the following layers of the OSI model? (Select TWO).

  A. Layer 1
  B. Layer 2
  C. Layer 3
  D. Layer 4
  E. Layer 5
  A. Layer 1
  B. Layer 2

• Question 28:

  A server that filters traffic between a WAN and a LAN is which of the following?

  A. Proxy server
  B. RAS server
  C. Default gateway
  D. Email server
  A. Proxy server

• Question 29:

  Which of the following tools would a technician use to determine if a CAT6 patch cable has an open or short?

  A. OTDR
  B. Cable tester
  C. Toner probe
  D. Protocol analyzer
  B. Cable tester

• Question 30:

  A technician has installed a group of layer 2 switches with multiple VLANs. The VLANs cannot talk to each other. Which of the following network devices could correct this problem? (Select TWO).

  A. Hub
  B. DNS server
  C. DHCP server
  D. Layer 3 switch
  E. Router
  D. Layer 3 switch
  E. Router