CompTIA JK0-016 Online Practice Questions and Exam Preparation

CompTIA JK0-016 Online Questions & Answers

• Question 541:

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

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

• Question 542:

  Joe, a vendor, walks into a customer's site with a laptop. While waiting for his contact to arrive, he wants to check his email. He discovers the SSID for the site's wireless network and receives a valid guest password from the receptionist. He is, however, unable to connect. Which of the following is MOST likely the problem?

  A. The customer's wireless router uses WPA encryption.
  B. The wireless router at the customer's site is configured with MAC filtering.
  C. The customer's WAP uses WEP encryption.
  D. The customer's IT department blocks all visitors from connecting to their network.
  B. The wireless router at the customer's site is configured with MAC filtering.

• Question 543:

  A user cannot access the LAN after working successfully most of the day. Which of the following should the network administrator check FIRST?

  A. VLAN settings
  B. History logs
  C. Patch cable
  D. Port security
  C. Patch cable

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  A patch cable or patch cord or patch lead is an electrical or optical cable used to connect ("patch-in") one electronic or optical device to another for signal routing.

• Question 544:

  Which of the following DHCP properties defines the size of the pool of available IP addresses?

  A. Options
  B. Scope
  C. Leases
  D. Reservations
  B. Scope

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  A range of IP addresses that are available to be leased to DHCP clients by the DHCP Server service.

• Question 545:

  Users have contacted the helpdesk stating that they have been having difficulties staying connected to the wireless network. They report that their laptops connect to one access point, drop the connection and then connect to a different access point in a never-ending cycle. Which of the following would BEST remediate this?

  A. Reconfigure the access points from 802.11b to 802.11g.
  B. Establish procedures which limit user connections during peak hours.
  C. Configure the access points so that they all use different SSIDs.
  D. Move one or more access points, minimizing signal overlap.
  D. Move one or more access points, minimizing signal overlap.

• Question 546:

  Which of the following technologies is used on cellular networks?

  A. Ethernet
  B. CDMA
  C. CSMA/CA
  D. POTS
  B. CDMA

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  CDMA is an example of multiple access, which is where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies (see bandwidth). To permit this to be achieved without undue interference between the users CDMA employs spread- spectrum technology and a special coding scheme

• Question 547:

  A technician has two wireless 802.11g APs. One is set to channel 1 and the other channel

  6. The APs appear to interfere with each other. Which of the following is MOST likely the reason?

  A. Channels below 9 overlap each other
  B. Channel width is set to 40MHz
  C. Channels are in the 5GHz range by mistake
  D. Channel 1 should have been set to 11 to avoid an overlap
  B. Channel width is set to 40MHz

• Question 548:

  A network technician is designing a SOHO environment where cost is a consideration. The requirements include access to the Internet and access to the guest house which is 100 feet away. The location of the Internet modem is located in the main house. Which of the following is the BEST option to accomplish these requirements?

  A. Use two combined Internet/router/wireless devices, one in each house.
  B. Use a Layer 3 switch in the main house and a combined Internet/router/wireless device in the guest house.
  C. Use a combined Internet/router/wireless device in the main house and a wireless access point in the guest house.
  D. Use a single combined Internet/router/wireless device at the guest house.
  C. Use a combined Internet/router/wireless device in the main house and a wireless access point in the guest house.

• Question 549:

  Which of the following TCP/IP model layers combines four OSI model layers?

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

• Question 550:

  Users in several departments are reporting connectivity problems. The technician examines the computer and finds the following settings. The IP address is 10.0.1.0 with a subnet mask of 255.255.252.0. The default gateway is 10.0.1.1 and the DNS server is 10.0.0.15. A user can connect to the internet but not servers on other internal subnets. The technician is not able to connect with a server with an IP of 10.0.2.25. Which of the following is MOST likely the problem?

  A. Default gateway
  B. Duplicate IP address
  C. Wrong DNS
  D. Subnet mask
  D. Subnet mask