CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 11:

  A technician needs to verify the time of a power outage. Which of the following may be used to determine this information?

  A. Network baseline
  B. Tracert
  C. System logs
  D. Protocol analyzer
  C. System logs

• Question 12:

  A user reports that they are unable to access a new server but are able to access all other network resources. Based on the following firewall rules and network information, which of the following ACL entries is the cause? User's IP: 192.168.5.14 Server IP: 192.168.5.17 Firewall rules: Permit 192.168.5.16/28192.168.5.0/28 Permit 192.168.5.0/24192.168.4.0/24 Permit 192.168.4.0/24192.168.5.0/24 Deny 192.168.5.0/28192.168.5.16/28 Deny 192.168.14.0/24192.168.5.16/28 Deny 192.168.0.0/24192.168.5.0/24

  A. Deny 192.168.0.0/24192.168.5.0/24
  B. Deny 192.168.5.0/28192.168.5.16/28
  C. Deny 192.168.14.0/24192.168.5.16/28
  D. Implicit Deny rule
  B. Deny 192.168.5.0/28192.168.5.16/28

• Question 13:

  A server administrator, Ann, is deploying a server that she wants to mitigate intrusions from zero day exploits. Which of the following should be deployed?

  A. Behavior based IPS
  B. Signature based IDS
  C. Antivirus software
  D. Access Control Lists
  A. Behavior based IPS

• Question 14:

  All users on a specific network segment report losing access to the wired network. During troubleshooting, the network administrator observes link lights on the workstations. When physically reviewing each switch, the network administrator changes the switch view settings to Activity and sees that all port lights remain solid green. Which of the following is MOST likely causing this issue?

  A. STP convergence
  B. Power failure
  C. Excessive bandwidth usage
  D. Broadcast storm
  D. Broadcast storm

• Question 15:

  A technician is installing a PoE switch for VoIP phones. Which of the following is the technician MOST likely going to configure on the switch?

  A. NAT
  B. QoS
  C. PAT
  D. DHCP
  B. QoS

• Question 16:

  A network administrator has been tasked to deploy a new WAP in the lobby where there is no power outlet. Which of the following options would allow the network administrator to ensure the WAP is deployed correctly?

  A. QoS
  B. Install 802.11n WAP
  C. PoE
  D. Parabolic antenna
  C. PoE

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  Power over Ethernet or PoE describes any of several standardized or ad-hoc systems which pass electrical power along with data on Ethernet cabling. This allows a single cable to provide both data connection and electrical power to devices such as wireless access points or IP cameras.

• Question 17:

  Which of the following ports does IMAP use by default?

  A. 110
  B. 123
  C. 143
  D. 443
  C. 143

• Question 18:

  Users report that an internal file server is inaccessible. Of the following commands, which would be the MOST useful in determining network-layer connectivity?

  A. dig
  B. nbtstat
  C. netstat
  D. ping
  D. ping

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  The Nbstat command is a great command to use when you need to display the NetBIOS over TCP/IP protocol statistics. The Nbstat command can also be used to display NetBIOS name tables for both local and remote computers.

• Question 19:

  An administrator has been experiencing slower than normal performance on a server. The administrator suspects that a developer is currently uploading large files to it from an internal network PC. Which of the following will display established connections to the server on the FTP port?

  A. ifconfig
  B. nslookup
  C. netstat
  D. arp
  C. netstat

• Question 20:

  A recent flood in the office caused a lot of equipment to be damaged and the manager of the IT department would like a way to prevent such an incident in the future. Which of the following is the BEST way to mitigate such an equipment failure?

  A. Reduce the power input on the replacement servers.
  B. Cover the servers with plastic tarps.
  C. Purchase twice as many servers to create high availability clusters.
  D. Transfer the replacement servers offsite to a data center.
  D. Transfer the replacement servers offsite to a data center.

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  As we replace replacement servers offsite to datacenter this will cause lower traffic on over lan and will not cause failure of these server also.