CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 61:

  Some visitors are unable to access the wireless network. The network's wireless infrastructure is comprised of three different buildings with the configurations listed below. Wireless network in Building A and C is used exclusively for internal employees and Building B is used for visitors and requires no additional configuration on their devices. Which of the following settings would need to be modified to provide wireless access to all visitors? Building ABuilding BBuilding C Channel: 2Channel: 6Channel: 11 Encryption: WPA2Encryption: WPA2Encryption: WPA2

  A. Encryption set to Open in all Buildings
  B. Encryption set to Open in Building B
  C. Encryption set to WEP in Building B
  D. Channel set to 11 in Building B
  B. Encryption set to Open in Building B

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  Because the building B is in the middle, the wireless access router will have reachability to the building A and C. Now, the only thing that we need to do is to open the Wireless access on B for the guest users for the WAP in B so that the users coming to building A and C can get access to internet using the open connection.

• Question 62:

  Which of the following addresses is a class B private address?

  A. 132.216.14.184
  B. 152.119.25.213
  C. 162.17.43.22
  D. 172.23.226.34
  D. 172.23.226.34

• Question 63:

  A network administrator is replacing old switches to support a VoIP deployment. Based on this parameter, which of the following is MOST likely to be implemented on these new switches?

  A. PoE
  B. STP
  C. NAT
  D. VTP
  A. PoE

• Question 64:

  A proxy server would MOST likely be installed to provide which of the following functions? (Select TWO).

  A. Combined DNS and DHCP hosting
  B. Encryption
  C. Content filtering
  D. Fault tolerance
  E. Website caching
  C. Content filtering
  E. Website caching

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  A content-filtering web proxy server provides administrative control over the content that may be relayed in one or both directions through the proxy. A caching proxy server accelerates service requests by retrieving content saved from a previous request made by the same client or even other clients.

• Question 65:

  Which of the following is always true when a router selects a destination?

  A. The default gateway is selected over any other static or dynamic route.
  B. The shortest route is always selected.
  C. The most specific route is selected over the default gateway.
  D. A dynamic route is selected over a directly attached network.
  C. The most specific route is selected over the default gateway.

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  Router always looks for the most closely matched route for forwarding the packet. For example if there are two routes in your router and you have to send a packet to a host with an ip 10.10.10.10 then it will forward packet to 192.168.1.10 rather than 192.168.1.1:

  Network Destination Netmask Gateway

  0.0.0.0 0.0.0.0 192.168.1.1

  10.10.10.0 255.255.255.0 192.168.1.10

• Question 66:

  Which of the following wireless standards has a MAXIMUM speed of only 1Mbps?

  A. IrDA
  B. 802.11b
  C. Bluetooth
  D. 802.11g
  C. Bluetooth

• Question 67:

  Which of the following is associated with DNS reverse lookup zones?

  A. CNAME
  B. TXT
  C. PTR
  D. MX
  C. PTR

• Question 68:

  Which of the following firewall rules will block destination telnet traffic to any host with the source IP address 1.1.1.2/24?

  A. Deny any source host on source port 23 to destination any
  B. Deny any source network 1.1.1.0/24 to destination any on port 23
  C. Deny source host 1.1.12 on source port 23 to destination any
  D. Deny any source network 1.1.1.0/24 with source port 23 to destination any
  B. Deny any source network 1.1.1.0/24 to destination any on port 23

• Question 69:

  Which of the following devices is utilized to ensure traffic does not become congested while traveling over redundant links?

  A. Access control list
  B. Load balancer
  C. Content filter
  D. Proxy server
  B. Load balancer

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  Load balancing is a computer networking method for distributing workloads across multiple computing resources, such as computers, a computer cluster, network links, central processing units or disk drives. Load balancing aims to optimize resource use, maximize throughput, minimize response time, and avoid overload of any one of the resources.

• Question 70:

  Which of the following spreads out each of the individual wires of a UTP cable onto their own metal connector?

  A. BNC connection
  B. 110 block
  C. Plenum
  D. LC connector
  B. 110 block