CompTIA JK0-016 Online Practice Questions and Exam Preparation

CompTIA JK0-016 Online Questions & Answers

• Question 371:

  Which of the following is described by the MAC address FF:FF:FF:FF:FF:FF?

  A. Unicast MAC address.
  B. Invalid MAC address.
  C. Multicast MAC address.
  D. Broadcast MAC address.
  D. Broadcast MAC address.

• Question 372:

  The security administrator needs to restrict specific devices from connecting to certain WAPs. Which of the following security measures would BEST fulfill this need?

  A. WAP placement
  B. MAC address filtering
  C. Content filtering
  D. Encryption type and strength
  B. MAC address filtering

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  MAC Filtering (or EUI filtering, or layer 2 address filtering) is a security access control method whereby the 48-bit address assigned to each network card is used to determine access to the network.

• Question 373:

  A technician is tasked with rewiring a CAT5e SOHO network with 10 existing computers. The users are currently running at 100 Mbps and would like to be upgraded to 1000 Mbps. Which of the following should the technician do FIRST?

  A. Upgrade the existing computers
  B. Purchase a new 802.11ac access point and install.
  C. Install CAT6 wiring for the SOHO network
  D. Verify the network cards can support 1Gbps
  D. Verify the network cards can support 1Gbps

• Question 374:

  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 375:

  An administrator notices that a computer on the network is unable to reach any of the servers by hostname. The computer has connectivity to the network and is able to ping all the devices by IP address. Which of the following can cause the error?

  A. The workstation has a duplicate IP address.
  B. The workstation has been assigned to the wrong VLAN.
  C. The workstation has the wrong gateway configured.
  D. The workstation has the wrong DNS configured.
  D. The workstation has the wrong DNS configured.

• Question 376:

  Which of the following protocols is the BEST choice for retrieving email on multiple devices?

  A. IMAP4
  B. SMTP
  C. FTP
  D. SNMPv3
  A. IMAP4

• Question 377:

  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 378:

  A network technician has determined a managed network switch has failed. The technician knows how to install a new switch, but not how to properly configure it. Which of the following troubleshooting steps should the technician take NEXT?

  A. Escalate the problem
  B. Identify potential effects
  C. Test the theory to determine cause
  D. Establish a plan of action to resolve the problem
  A. Escalate the problem

• Question 379:

  After deploying a network switch, the network administrator is unable to remotely administer the device. The network administrator notices that the switch has the following configuration. Which of the following is the MOST likely cause of this issue? Management LAN: 192.168.10.0/24

  Management interfacE. 192.168.10.2 255.255.255.0

  Default gateway: 192.168.11.1

  STP is enabled

  A. VLAN assignment
  B. Wrong subnet mask
  C. Switching loop
  D. Wrong gateway
  D. Wrong gateway

• Question 380:

  Stateful packet inspection is a security technology used by which of the following devices?

  A. Unmanaged switch
  B. Hardware firewall
  C. Bridge
  D. IDS
  B. Hardware firewall

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  With Stateful Packet Inspection (SPI), every time a packet is sent out of the computer, the firewall keeps track of it. When a packet comes back to the firewall, the firewall can tell whether or not the in-bound packet is a reply to the packet that was sent out.This way, the firewall can handle most network traffic safely without a complex configuration of firewall rules.