CompTIA JK0-016 Online Practice Questions and Exam Preparation

CompTIA JK0-016 Online Questions & Answers

• Question 281:

  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 282:

  A network administrator is performing a penetration test on the WPA2 wireless network. Which of the following can be used to find the key?

  A. DoS
  B. Buffer overflow
  C. Dictionary file
  D. SQL injection
  C. Dictionary file

  ---

  A file used by the debugger. It contains information about a program's structure and contents. The Compiler creates the dictionary file in the first phase of compilation, when checking the syntax. A dictionary file has the filename extension .idy, and is often referred to an .idy file.

• Question 283:

  An administrator needs to open ports in the firewall to support both major FTP transfer modes. Which of the following default ports was MOST likely opened? (Select TWO)

  A. 20
  B. 21
  C. 22
  D. 23
  E. 25
  F. 53
  A. 20
  B. 21

  ---

  FTP use both port 21 and 20 (port 21 for the command port and port 20 for the data).

• Question 284:

  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

  ---

  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.

• Question 285:

  Which of the following can be used to prioritize network streams to optimize performance for certain traffic types?

  A. VLAN
  B. VPN
  C. QoS
  D. PoE
  C. QoS

• Question 286:

  An application is using port 2000 on a PC. Which of the following could an administrator do to determine what software is listening on that port?

  A. Run netstat
  B. Run dig
  C. Run nbtstat
  D. Run tracert
  A. Run netstat

• Question 287:

  A technician is troubleshooting Internet connectivity for a PC. Which of the following is MOST likely the reason for Internet connectivity issues upon inspecting the routing table?

  

  A. The router should be listed as 224.0.0.1
  B. The NIC is set to the wrong subnet mask
  C. The route of last resort is missing
  D. Loopback traffic is weighted higher than NIC interface traffic
  C. The route of last resort is missing

  ---

  The default route is missing from the table.

  It looks like this:

  Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.12 25

• Question 288:

  A user has network connectivity per the link lights on the NIC, but cannot access any network resources or the Internet. Which of the following commands should the technician run FIRST?

  A. arp
  B. ipconfig
  C. tracert
  D. route
  B. ipconfig

  ---

  As from ipconfig command technician will come to know wheather he has assigned right ip address to NIC or not.

• Question 289:

  A customer is implementing a VoIP infrastructure using an existing network. The customer currently has all network devices on the same subnet and would like the phones to be powered without the use of an AC adapter. Which of the following features should be enabled and configured to allow for reliable performance of the VoIP system? (Select THREE).

  A. WEP
  B. PoE
  C. VLANs
  D. SSL VPN
  E. IDS
  F. QoS
  B. PoE
  C. VLANs
  F. QoS

  ---

  As customer don't want to use Ac adapter so Power over Ethernet is best option (PoE) as in this switch provide power to phones.Phones will transfer their power requirement via cdp to vlan assigned.And Qos provide the voice packet priority over the data packets to avoid jitter.

• Question 290:

  A technician is upgrading the wiring in an older office building. The building currently contains some CAT3, CAT5, and CAT6 cables. The technician cannot visually distinguish between the cables because they are all the same color. Which of the following tools would help the technician determine which wires are the CAT3 and CAT5 cables needing to be replaced with CAT6 ones?

  A. Cable certifier
  B. Toner probe
  C. Cable tester
  D. Crimper
  A. Cable certifier