CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 201:

  A network administrator is configuring PXE boot to reimage a computer lab. Which of the following must be configured on the existing DHCP server to specify the IP address of the imaging server from which the clients must boot?

  A. Scope
  B. Reservation
  C. Option
  D. Lease
  C. Option

• Question 202:

  Which of the following WAN technologies has the highest latency?

  A. POTS
  B. Cable
  C. Satellite
  D. DSL
  C. Satellite

• Question 203:

  Which of the following uses port 23 by default?

  A. TELNET
  B. IMAP
  C. FTP
  D. SNMP
  A. TELNET

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  Telnet is a network protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. User data is interspersed in-band with Telnet control information in an 8-bit byte oriented data connection over the Transmission Control Protocol (TCP).

• Question 204:

  The MAC address of a network device is used to communicate at which of the following OSI layers?

  A. Layer 1
  B. Layer 2
  C. Layer 4
  D. Layer 5
  B. Layer 2

• Question 205:

  An organization only has a single public IP address and needs to host a website for its customers. Which of the following services is required on the network firewall to ensure connectivity?

  A. Forwarding proxy
  B. Port address translation
  C. DMZ port security
  D. Application inspection
  B. Port address translation

• Question 206:

  Which of the following is used to allow multiple sources on a single optical cable?

  A. HSPA+
  B. MIMO
  C. DWDM
  D. SONET
  C. DWDM

• Question 207:

  Which of the following uses SSL encryption?

  A. SMTP
  B. FTP
  C. HTTPS
  D. SNMP
  C. HTTPS

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  HTTPS is the result of simply layering the Hypertext Transfer Protocol (HTTP) on top of the SSL/TLS protocol, thus adding the security capabilities of SSL/TLS to standard HTTP communications.

• Question 208:

  A company needs to implement a secure wireless system that would require employees to authenticate to the wireless network with their domain username and password. Which of the following would a network administrator deploy to implement these requirements? (Select TWO).

  A. 802.1q
  B. MAC address filtering
  C. WPA2 Personal
  D. WPA Enterprise
  E. 802.1x
  D. WPA Enterprise
  E. 802.1x

• Question 209:

  A technician needs to ensure that traffic from a specific department is separated within several switches. Which of the following needs to be configured on the switch to separate the traffic?

  A. Duplex settings
  B. SNMP string
  C. VLAN assignments
  D. Spanning tree
  C. VLAN assignments

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  A VLAN is a group of end stations with a common set of requirements, independent of physical location. VLANs have the same attributes as a physical LAN but allow you to group end stations even if they are not located physically on the same LAN segment.

• Question 210:

  A network is having problems with traffic flowing to several critical websites that are used for necessary company work. Which of the following appliances would BEST handle network traffic to increase network performance?

  A. Caching engine
  B. Traffic shaper
  C. Network based firewall
  D. Packet sniffer
  B. Traffic shaper