CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 51:

  Encryption provides which of the following to data being transferred across the network?

  A. Confidentiality
  B. Resistance to Jitter
  C. High Availability
  D. Data Integrity
  A. Confidentiality

• Question 52:

  A company has just installed a new network switch for an expanding department. The company is also piloting the use of a VoIP phone system for this department. Which of the following should be enabled on the new network switch?

  A. WINS
  B. QoS
  C. NAT
  D. DHCP
  B. QoS

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  Qos provide the voice packet priority over the data packets to avoid jitter and delay.

• Question 53:

  A user reports that they are unable to connect to the network. Upon further investigation, a technician notices that the user has an IP address/subnet mask combination of 192.168.204.255/24. The default gateway for the network is

  192.168.204.254. Which of the following could the user's IP address be changed to so that they could connect to the network?

  A. 192.168.204.0/27
  B. 192.168.204.1/27
  C. 192.168.204.112/24
  D. 192.168.204.254/24
  C. 192.168.204.112/24

• Question 54:

  A network administrator wishes to limit the number of potential wireless clients to 20 on a specific AP. Which of the following settings needs to be changed?

  A. The network address translation IP range.
  B. The signal strength of the router.
  C. The DCHP lease time.
  D. The number of allowable MAC addresses.
  D. The number of allowable MAC addresses.

• Question 55:

  Which of the following antenna types has a flat circular radiation pattern?

  A. Diversity
  B. Yagi
  C. Omni
  D. Patch
  C. Omni

• Question 56:

  An administrator is attempting to troubleshoot a program that is unable to resolve IP addresses from FQDNs. Which of the following commands is used to check reverse DNS settings?

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

• Question 57:

  Which of the following connector types are used in terminating singlemode fiber cables? (Select TWO).

  A. LC
  B. F-connector
  C. DB-9
  D. BNC
  E. RJ-11
  F. SC
  A. LC
  F. SC

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  A variety of optical fiber connectors are available, but SC and LC connectors are the most common types of connectors on the market.[citation needed] Typical connectors are rated for 500?,000 mating cycles. The main differences among types of connectors are dimensions and methods of mechanical coupling. Generally, organizations will standardize on one kind of connector, depending on what equipment they commonly use. Different connectors are required for multimode, and for single-mode fibers

• Question 58:

  A network technician is configuring a new firewall for placement into an existing network infrastructure. The existing network is connected to the Internet by a broadband connection. Which of the following represents the BEST location for the new firewall?

  A. The firewall should be placed between the Internet connection and the local network.
  B. The firewall should be placed inside the local network.
  C. The firewall should be placed between the broadband connection and the Internet.
  D. The firewall should be placed in the Internet cloud.
  A. The firewall should be placed between the Internet connection and the local network.

• Question 59:

  An employee connects to a work computer from home via the built-in Windows remote desktop connection. Which of the following is MOST likely being used to establish the connection?

  A. RDP
  B. RTP
  C. RIP
  D. RAS
  A. RDP

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  Remote Desktop Protocol (RDP) is a proprietary protocol developed by Microsoft, which provides a user with a graphical interface to connect to another computer over a network connection. The user employs RDP client software for this purpose, while the other computer must run RDP server software.

• Question 60:

  Which of the following DNS records is used to identify a domain's SMTP server?

  A. CNAME
  B. PTR
  C. MX
  D. A
  C. MX

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  A mail exchanger record (MX record) is a type of resource record in the Domain Name System that specifies a mail server responsible for accepting email messages on behalf of a recipient's domain, and a preference value used to prioritize mail delivery if multiple mail servers are available. The set of MX records of a domain name specifies how email should be routed with the Simple Mail Transfer Protocol (SMTP).