CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 781:

  Which of the following configuration management documents is used to describe how a computer performs after initial installation onto a network?

  A. Baseline
  B. Network map
  C. Asset management
  D. Installation guide
  A. Baseline

• Question 782:

  A CAT5e network cable run needs to be installed over fluorescent lighting arrays in an office building. Which of the following cable types would be BEST suited for such an installation?

  A. UTP
  B. Plenum
  C. Coaxial
  D. STP
  D. STP

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  Shielded twisted pair is a special kind of copper telephone wiring used in some business installations. An outer covering or shield is added to the ordinary twisted pair telephone wires; the shield functions as a ground.

  Twisted pair is the ordinary copper wire that connects home and many business computers to the telephone company. To reduce crosstalk or electromagnetic induction between pairs of wires, two insulated copper wires are twisted around each other. Each signal on twisted pair requires both wires

• Question 783:

  A user at a small business states that they cannot connect to the Internet via the company's wireless network every time their cordless phone rings. Which of the following is MOST likely occurring?

  A. Interference
  B. Incorrect encryption type
  C. Latency
  D. SSID mismatch
  A. Interference

• Question 784:

  Which of the following authentication methods is MOST secure?

  A. NTLM
  B. CHAP
  C. MS-CHAP
  D. Kerberos
  D. Kerberos

• Question 785:

  Which of the following wireless parameters may need to be modified when a new cordless telephone is installed?

  A. Encryption type
  B. SSID
  C. IP address
  D. Channel
  D. Channel

• Question 786:

  Which of the following protocols is used to provide secure authentication and encryption over non-secure networks?

  A. RADIUS
  B. TLS
  C. PPTP
  D. HTTP
  B. TLS

• Question 787:

  The network administrator has been tasked to create a network segment where resources can be placed for public web access. Which of the following should be implemented?

  A. DMZ
  B. Honeynet
  C. PAT
  D. Port security
  A. DMZ

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  In computer security, a DMZ is a physical or logical subnetwork that contains and exposes an organization's external-facing services to a larger and untrusted network, usually the Internet.

• Question 788:

  Which of the following network devices builds a table of ports to MAC addresses to forward packets only to necessary ports?

  A. Switch
  B. Hub
  C. Router
  D. Repeater
  A. Switch

• Question 789:

  Which of the following protocols works at the LOWEST layer of the OSI model?

  A. L2TP
  B. PPTP
  C. ISAKMP
  D. IPSec
  A. L2TP

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  Layer Two Tunneling Protocol (L2TP) is an extension of the Point-to-Point Tunneling Protocol (PPTP) used by an Internet service provider (ISP) to enable the operation of a virtual private network (VPN) over the Internet.

• Question 790:

  Which of the following WAN technologies has the HIGHEST latency?

  A. ADSL
  B. LTE
  C. Satellite
  D. WiMAX
  C. Satellite

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  Satellite WAN latency is the delay caused by the physical distance a signal must travel from earth, to the satellite, and back to earth to complete a round-trip transmission. Because of the physics involved in the round-trip-time (RTT), end-toend latency can take 600 milliseconds or more due to geosynchronous satellites orbiting miles above the earth.