CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 311:

  Which of the following network topologies would be the BEST choice in providing network redundancy for an organization?

  A. Star
  B. Hybrid
  C. Mesh
  D. Point to Point
  C. Mesh

• Question 312:

  Which of the following network topologies describes a network where each node is connected to every other node?

  A. Bus
  B. Star
  C. Mesh
  D. Ring
  C. Mesh

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  In a true mesh topology every node has a connection to every other node in the network.

• Question 313:

  A network technician is concerned that an attacker is attempting to penetrate the network, and wants to set a rule on the firewall to prevent the attacker from learning which IP addresses are valid on the network. Which of the following protocols needs to be denied?

  A. TCP
  B. SMTP
  C. ICMP
  D. ARP
  C. ICMP

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  The Internet Control Message Protocol (ICMP) is one of the core protocols of the Internet Protocol Suite. It is used by network devices, like routers, to send error messages indicating, for example, that a requested service is not available or that a host or router could not be reached. ICMP can also be used to relay query messages. It is assigned protocol number 1.

• Question 314:

  Which of the following connectors is used for coaxial copper cable?

  A. BNC
  B. DB-9
  C. RJ-11
  D. ST
  A. BNC

• Question 315:

  A technician needs to setup an Internet connection for a small office. There are five users that need the ability to use email and do online research. The office manager wants the connection to be always on and be as inexpensive as possible. Which of the following would BEST fit the needs of this office?

  A. Broadband
  B. T1
  C. Frame Relay
  D. Satellite
  A. Broadband

• Question 316:

  An administrator has created several virtual machines on the same host server and requires them to each be on separate VLANs. Which of the following should the administrator configure to meet this goal?

  A. Set the VLAN preferences on the host's NIC
  B. Create each VLAN on the host's virtual switch
  C. Change the virtual machine NIC settings from private to bridged
  D. Create each VLAN on the host's gateway router
  B. Create each VLAN on the host's virtual switch

• Question 317:

  Which of the following records allows for reverse DNS lookups?

  A. AAAA
  B. A
  C. PTR
  D. CNAME
  C. PTR

• Question 318:

  Which of the following describes blocking traffic based upon the Layer 3 sources address of the traffic?

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

• Question 319:

  Which of the following is MOST likely used with RG-6 media?

  A. MTRJ
  B. RJ-11
  C. RJ-45
  D. F-connector
  D. F-connector

• Question 320:

  A company wants to simplify network authentication for their users. Which of the following would be used to implement wireless security with single sign-on?

  A. WPA2 enterprise
  B. WEP
  C. Stateful firewall
  D. PAT
  A. WPA2 enterprise