CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 81:

  Which of the following transmission methods do DHCP enabled devices use to request an IP address?

  A. Broadcast
  B. Directed broadcast
  C. Unicast
  D. Multicast
  A. Broadcast

• Question 82:

  Which of the following would be considered a Class C private address?

  A. 10.0.0.125
  B. 192.168.50.125
  C. 192.169.0.132
  D. 255.255.255.0
  B. 192.168.50.125

• Question 83:

  Which of the following network protocols would be used to transmit traps across a network to a log server?

  A. SMTP
  B. PPPoE
  C. POP3
  D. SNMP
  D. SNMP

• Question 84:

  Which of the following protocols are used to provide accurate time to network devices?

  A. SMTP
  B. FTP
  C. TLS
  D. NTP
  D. NTP

• Question 85:

  Which of the following are considered unsecure access methods? (Select TWO).

  A. FTP
  B. IPSec
  C. RCP
  D. SCP
  E. SFTP
  A. FTP
  C. RCP

• Question 86:

  Which of the following is a common physical network topology?

  A. Cross-over
  B. Loopback
  C. Star
  D. Straight
  C. Star

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  A star network consists of one central switch, hub or computer, which acts as a conduit to transmit messages. This consists of a central node, to which all other nodes are connected; this central node provides a common connection point for all nodes through a hub. In star topology, every node (computer workstation or any other peripheral) is connected to central node called hub or switch.

• Question 87:

  Which of the following could be installed to allow a home user with one desktop computer to economically have Internet access in every room in the house?

  A. Fiber optic
  B. CAT6
  C. Broadband over powerline
  D. CAT5
  C. Broadband over powerline

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  Internet access service through existing power lines is often marketed as broadband over power lines (BPL), also known as power-line Internet or powerband. A computer (or any other device) would need only to plug a BPL modem into any outlet in an equipped building to have high-speed Internet access

• Question 88:

  Drag and drop the following maximum speeds to their corresponding wireless standards. Tokens can be used more than once.

  Select and Place:

  

  

• Question 89:

  Which of the following does Kerberos use to authenticate?

  A. Tickets
  B. Servers
  C. Users
  D. Clients
  A. Tickets

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  Kerberos keeps a database of its clients and their private keys. The private key is a large number known only to Kerberos and the client it belongs to. In the case that the client is a user, it is an encrypted password. Network services requiring authentication register with Kerberos, as do clients wishing to use those services. The private keys are negotiated at registration.

• Question 90:

  On which of the following layers of the OSI model does IP operate?

  A. Session
  B. Transport
  C. Network
  D. Data link
  C. Network