CompTIA JK0-016 Online Practice Questions and Exam Preparation

CompTIA JK0-016 Online Questions & Answers

• Question 821:

  Which of the following reduces the deployment cost of a wireless LAN?

  A. WPA
  B. 802.1x
  C. MIMO
  D. PoE
  D. PoE

  ---

  Power over Ethernet or PoE describes any of several standardized or ad-hoc systems which pass electrical power along with data on Ethernet cabling. This allows a single cable to provide both data connection and electrical power to devices such as wireless access points or IP cameras.

• Question 822:

  Which of the following connector types would require a punch down tool to attach a network cable to it?

  A. F-connector
  B. ST
  C. 110 block
  D. RJ-45
  C. 110 block

• Question 823:

  Users trying to access a website using HTTPS are being blocked by the firewall. Which of the following ports needs to be allowed?

  A. 80
  B. 143
  C. 443
  D. 3389
  C. 443

• Question 824:

  Which of the following wireless standards provide speed of 11Mbps?

  A. 802.11a
  B. 802.11b
  C. 802.11g
  D. 802.11n
  B. 802.11b

  ---

  802.11a - 54Mbps - OFDM 802.11b - 11Mbps - DSSS 802.11g - 54Mbps - OFDM/DSSS 802.11n - 150/300Mbps (MIMO) ?OFDM

• Question 825:

  A user reports that one of their critical programs no longer functions after a recent router upgrade in the office. A network technician is called in to troubleshoot the issue and documentation shows that the software needs full open connections over ports 558, 981, and 382 in order to function. Which of the following tools could the technician BEST use to troubleshoot this issue?

  A. NET USE
  B. IPCONFIG
  C. TRACEROUTE
  D. TELNET
  D. TELNET

• Question 826:

  Which of the following is the MOST secure way to prevent malicious changes to a firewall?

  A. SNMPv2 access only
  B. TELNET access only
  C. SSH access only
  D. Console access only
  D. Console access only

  ---

  Console access requires physical access to the device, so this is the most secure method.

• Question 827:

  A user reports sporadic network outages. The user tells the administrator it happens after approximately 20 minutes of work on an application. The administrator should begin troubleshooting by checking which of the following?

  A. The IDS server logs
  B. The DNS resolution time
  C. The firewall's blocked logs
  D. The patch cable
  D. The patch cable

• Question 828:

  Which of the following attacks would allow an intruder to do port mapping on a company's internal server from a separate company server on the Internet?

  A. SYN flood
  B. Teardrop
  C. Smurf
  D. FTP bounce
  D. FTP bounce

  ---

  FTP bounce attack is an exploit of the FTP protocol whereby an attacker is able to use the PORT command to request access to ports indirectly through the use of the victim machine as a middle man for the request.