CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 111:

  Which of the following is used to embed the MAC address of an Ethernet interface in a corresponding IPv6 address?

  A. Subnet
  B. IANA prefix
  C. EUI-64
  D. Site-local
  C. EUI-64

• Question 112:

  A technician receives a work order that a user can no longer access any external websites. The user is the only one affected, but can still access websites by IP address. Which of the following is the MOST likely cause?

  A. The workstation has been removed from the domain and needs to be re-added in directory services.
  B. The workstation is configured to use the IPv4 protocol instead of IPv6.
  C. The workstation is configured with an incorrect IP address of the DNS server.
  D. The workstation's DHCP IP address has expired and has assigned itself an APIPA address.
  C. The workstation is configured with an incorrect IP address of the DNS server.

• Question 113:

  Layers 5, 6, and 7 from the OSI model correspond to which of the following layers of the TCP/IP model?

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

• Question 114:

  Which of the following switches is used with ARP to display the cache entry for a specific IP address?

  A. -a
  B. -d
  C. -g
  D. -s
  A. -a

• Question 115:

  It has been suspected that one of the users is using the network inappropriately. As a preventive measure HR has authorized the IT department to enable port mirroring on the user's network port. Which of the following devices would be used to monitor the network activity?

  A. Port analyzer
  B. Multimeter
  C. Network sniffer
  D. Cable certifier
  C. Network sniffer

• Question 116:

  A technician is having issues accessing the Internet from the workstation. They are able to ping the DNS server and their default gateway. Which of the following commands can be used to verify DNS is functioning properly?

  A. nslookup
  B. netstat
  C. traceroute
  D. nbtstat
  A. nslookup

• Question 117:

  Users report that they are unable to access any external websites. The local intranet is not affected. A network technician has isolated the problem to a Linux-based server. Which of the following commands will enable the technician to view DNS information on the Linux- based server?

  A. nbtstat
  B. ipconfig
  C. dig
  D. netstat
  C. dig

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  By dig command technician will come to know wheather name resolution is happening in correc way or not.

• Question 118:

  A multi-layer switch operates at which of the following OSI layers?

  A. Layers 1 and 5
  B. Layers 2 and 3
  C. Layers 4 and 5
  D. Layers 5 and 6
  B. Layers 2 and 3

• Question 119:

  A technician is attempting to set up a new laptop for a user. The user's old laptop connects to the corporate wireless network "CompanyWiFi" automatically. However, when the technician looks for the "CompanyWiFi" network on the new laptop, he does not find it in the list of available networks. Both laptops have 802.11g wireless network adapters and are sitting next to each other on the user's desk. Which of the following would MOST likely be the reason that the new laptop cannot see the "CompanyWiFi" network?

  A. Loss of signal strength
  B. Incorrect WEP key was input
  C. RFID interference from other electronic devices
  D. SSID broadcasting is disabled on the WAP
  D. SSID broadcasting is disabled on the WAP

• Question 120:

  Which of the following port numbers is used for SNMP?

  A. 61
  B. 151
  C. 161
  D. 1611
  C. 161

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  Simple Network Management Protocol (SNMP) is an "Internet-standard protocol for managing devices on IP networks". Devices that typically support SNMP include routers, switches, servers, workstations, printers, modem racks, UPSes and more. It is used mostly in network management systems to monitor network-attached devices for conditions that warrant administrative attention.