CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 331:

  A network administrator is considering implementation of network access restrictions based upon layer two addressing information. Which of the following describes this method of network restrictions?

  A. MAC filtering
  B. Port filtering
  C. IP filtering
  D. ACL filtering
  A. MAC filtering

• Question 332:

  A company has a total of two public IP addresses and must allow 150 devices to connect to the Internet at the same time. Which of the following is the BEST option for connectivity?

  A. VLSM
  B. NAT
  C. CIDR
  D. PAT
  D. PAT

• Question 333:

  A system administrator is implementing an IDS on the database server to see who is trying to access the server. The administrator relies on the software provider for what to detect. Which of the following would MOST likely be installed?

  A. Behavior based IDS
  B. Network based IDS
  C. Signature based IDS
  D. Honeypot
  C. Signature based IDS

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  Signature detection involves searching network traffic for a series of bytes or packet sequences known to be malicious. A key advantage of this detection method is that signatures are easy to develop and understand if you know what network behavior you're trying to identify.

• Question 334:

  When dealing with high bandwidth applications such as VoIP and VTC, which of the following network performance optimization tools should be implemented to ensure BEST performance?

  A. Fault tolerance
  B. Load balancing
  C. Caching engines
  D. QoS
  D. QoS

• Question 335:

  A technician discovers that the throughput of sales traffic on the primary connection is constantly reaching maximum level, and the sales users are beginning to report slowness while accessing cloud based applications. The technician allows traffic to use the secondary connection so that traffic would share both connections. This is an example of which of the following?

  A. QoS
  B. Caching engines
  C. Traffic shaping
  D. Load balancing
  D. Load balancing

• Question 336:

  A user reports lack of network connectivity on their desktop. Which of the following is the FIRST step of the network troubleshooting methodology that the technician should perform?

  A. Establish a plan of action to resolve the problem.
  B. Establish a theory of probable cause by questioning the obvious.
  C. Test the theory to determine the cause.
  D. Question the user to determine if anything has changed.
  D. Question the user to determine if anything has changed.

• Question 337:

  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

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  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.

• Question 338:

  Which of the following tools will scan a network for hosts and provide information on the installed operating system?

  A. DOCSIS
  B. NMAP
  C. IMAP
  D. BERT
  B. NMAP

• Question 339:

  A vendor releases an emergency patch that fixes an exploit on their network devices. The network administrator needs to quickly identify the scope of the impact to the network. Which of the following should have been implemented?

  A. Change management
  B. Asset management
  C. Network sniffer
  D. System logs
  B. Asset management

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  Asset management is defined as the business practice of managing and optimizing the purchase, deployment, maintenance, utilization, and disposal of hardware and software applications within an organization.

• Question 340:

  After a power failure, several users are unable to connect to network devices at the remote office. Which of the following is the MOST likely cause of the issue?

  A. Bad cable
  B. Missing route
  C. Duplicate IP address
  D. Switching loop
  B. Missing route