CompTIA JK0-016 Online Practice Questions and Exam Preparation

CompTIA JK0-016 Online Questions & Answers

• Question 631:

  Which of the following appliances creates and manages a large number of secure remote- access sessions, and also provides a high availability solution?

  A. Media converter
  B. Proxy server
  C. VPN concentrator
  D. Load balancer
  C. VPN concentrator

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  The VPN Concentrator is used for Remote Access VPN's that allows users to use an encrypted tunnel to securely access a corporate or other network via the Internet.

• Question 632:

  A company recently added an addition to their office building. A technician runs new plenum network cables from the switch on one side of the company's gymnasium 80 meters (262 ft.) to the new offices on the other side, draping the wires across the light fixtures. Users working out of the new offices in the addition complain of intermittent network connectivity. Which of the following is MOST likely the cause of the connectivity issue?

  A. dB loss
  B. Distance
  C. Incorrect connector type
  D. EMI
  E. Crosstalk
  D. EMI

• Question 633:

  Which of the following commands displays the routing table on a server or workstation?

  A. nbtstat
  B. route
  C. traceroute
  D. nmap
  B. route

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  The route command allows you to make manual entries into the network routing tables. The route command distinguishes between routes to hosts ...

• Question 634:

  While working on a PC, a technician notices 0.0.0.0 in the routing table. Which of the following does this indicate?

  A. It is the default route.
  B. This is the address for the DHCP server.
  C. The PC has not been assigned an IP address.
  D. The firewall is down.
  A. It is the default route.

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  The address 0.0.0.0 generally means "any address". If a packet destination doesn't match an individual address in the table, it must match a 0.0.0.0 gateway address. In other words, default gateway is always pointed by 0.0.0.0:

• Question 635:

  When a patch cable is plugged into a switch, all port activity indicators turn on and users instantly lose network connectivity. Which of the following is the MOST likely diagnosis?

  A. Denial of service attack
  B. MTU black hole
  C. Switching loop
  D. Defective patch cable
  C. Switching loop

• Question 636:

  Which of the following TCP/IP model layers does the OSI model Presentation layer map to?

  A. Transport
  B. Internet
  C. Application
  D. Network Interface
  C. Application

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  The Application layer provides applications the ability to access the services of the other layers and defines the protocols that applications use to exchange data. There are many Application layer protocols and new protocols are always being developed.

• Question 637:

  DHCP uses which of the following ports by default?

  A. 21
  B. 23
  C. 68
  D. 443
  C. 68

• Question 638:

  A user reports lack of network connectivity on their desktop. Which of the following is the FIRST step of the network troubleshooting methodology that the technician should perform?

  A. Establish a plan of action to resolve the problem.
  B. Establish a theory of probable cause by questioning the obvious.
  C. Test the theory to determine the cause.
  D. Question the user to determine if anything has changed.
  D. Question the user to determine if anything has changed.

• Question 639:

  In a newly installed LAN, the network administrator receives many calls about intermittent or slow connectivity to the authentication server. Which of the following could cause this problem? (Select TWO).

  A. VLAN configuration error
  B. Cables too short
  C. Cable crosstalk
  D. Incorrect channel
  E. EMI
  F. Wrong subnet mask
  C. Cable crosstalk
  E. EMI

• Question 640:

  A technician needs to enter a username and password and have their fingerprint scanned to access a server. Which of following types of authentication is this an example of?

  A. Single sign-on
  B. Network access control
  C. PKI authentication
  D. Two-factor authentication
  D. Two-factor authentication