CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 271:

  Which of the following OSI model layers is used to frame packets that are sent over a medium?

  A. Session
  B. Data link
  C. Physical
  D. Transport
  B. Data link

• Question 272:

  Which of the following wireless standards can operate on the same frequency but are not compatible?

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

• Question 273:

  Which of the following contains the SYN and ACK flags?

  A. UDP header
  B. IP header
  C. TCP header
  D. ICMP header
  C. TCP header

• Question 274:

  Which of the following is the wireless encryption standard associated with WPA2?

  A. AES-CCMP
  B. EAP
  C. WEP
  D. 802.1x
  A. AES-CCMP

• Question 275:

  A network where all traffic feeds through a centralized gateway uses which of the following topologies?

  A. Peer-to-peer
  B. Ring
  C. Bus
  D. Star
  D. Star

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  A bus topology is a type of network setup where each computer and network device is connected to a single cable or backbone.

• Question 276:

  A technician testing an Ethernet card uses a cable wired with pins 1,2 to pins 3,6 on the same RJ-45 plug. Which of the following describes what the technician is using?

  A. RS-232
  B. Rollover cable
  C. Loopback
  D. Point to point cable
  C. Loopback

• Question 277:

  Which of the following commands can be used on a server to display IP information for a given interface?

  A. nbtstat
  B. dig
  C. ifconfig
  D. msconfig
  C. ifconfig

• Question 278:

  Assigning IP addresses from a pool of predetermined available addresses is the role of which of the following network appliances?

  A. RADIUS
  B. DNS
  C. DHCP
  D. IDS
  C. DHCP

• Question 279:

  Which of the following OSI layers allows users to access network services such as file sharing?

  A. Layer 1
  B. Layer 3
  C. Layer 4
  D. Layer 7
  D. Layer 7

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  Basically File Transfer protocol (FTP) is responsible for file transfer which lies under Application layer (Layer 7) of OSI layers.

• Question 280:

  Users at a remote site are unable to establish a VPN to the main office. At which of the following layers of the OSI model does the problem MOST likely reside?

  A. Presentation
  B. Application
  C. Physical
  D. Session
  D. Session