CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 391:

  Which of the following allows an administrator to reference performance and configuration information if there is a problem on the network?

  A. Wire schemes
  B. Change management
  C. Network diagrams
  D. System baselines
  D. System baselines

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  System baseline is the record line or changes record that administrator keep to match the effect after new configuration with previous configuration.

• Question 392:

  An administrator determines that an attack is taking place on the email server from a group of users on the same ISP. Which of the following is the BEST way to mitigate an attack on the network?

  A. Packet filtering
  B. Spam filtering
  C. MAC filtering
  D. CSU
  A. Packet filtering

• Question 393:

  A technician is troubleshooting a computer that will not connect to the Internet. The PC is connected to the network. Which of the following tools should the technician use FIRST to understand the NIC configuration?

  A. Protocol analyzer
  B. ipconfig
  C. nslookup
  D. tracert
  B. ipconfig

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  ipconfig is a commmand line utility available on all versions of Microsoft Windows starting with Windows NT. ipconfig is designed to be run from the Windows command prompt. This utility allows you to get the IP address information of a Windows computer. It also allows some control over active TCP/IP connections. ipconfig is an alternative to the older 'winipcfg' utility.

• Question 394:

  Which of the following technologies allows multiple staff members to connect back to a centralized office?

  A. Peer to Peer
  B. VPN
  C. PKI
  D. VLAN
  B. VPN

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  VPN enables a computer to send and receive data across shared or public networks as if it were directly connected to the private network, while benefiting from the functionality, security and management policies of the private network. This is done by establishing a virtual point-to-point connection through the use of dedicated connections, encryption, or a combination of the two.

• Question 395:

  A technician, Joe, visits a site that has reported a network down emergency. He immediately reboots the switches and the router since the network is down. Which of the following network troubleshooting methodology steps should Joe have performed FIRST?

  A. Determine if anything has changed
  B. Once a theory is confirmed determine the next step is to resolve the problem
  C. Implement the solution or escalate as necessary
  D. Question the obvious
  A. Determine if anything has changed

• Question 396:

  Which of the following is an example of asymmetric encryption?

  A. PKI
  B. SHA1
  C. AES
  D. 3DES
  A. PKI

• Question 397:

  In the event of a fire in an office building, which of the following cable types should be installed to prevent toxic gas from burning PVC cable coatings?

  A. CAT6a
  B. Plenum
  C. Crossover
  D. STP
  B. Plenum

• Question 398:

  The systems administrator has assigned an IP address and default gateway to a standard Layer 2 switch. Which of the following would be the primary purpose of doing this?

  A. Allow VLAN routing
  B. Enable packet filtering on the switch
  C. Allow remote administration of the switch
  D. Enable MAC filtering on the switch
  C. Allow remote administration of the switch

• Question 399:

  When implementing video streaming from the Internet to an always on device, it is best to employ which of the following services to minimize latency issues?

  A. QoS
  B. EIGRP
  C. PPTP
  D. OSPF
  A. QoS

• Question 400:

  Which of the following provides secure access to a network device?

  A. SNMPv2
  B. FTP
  C. RSH
  D. SSH
  D. SSH

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  Secure Shell (SSH) is a cryptographic network protocol for secure data communication, remote command-line login, remote command execution, and other secure network services between two networked computers that connects, via a secure channel over an insecure network, a server and a client (running SSH server and SSH client programs, respectively).