CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 121:

  Which of the following is the MAXIMUM rated speed for CAT5 cabling?

  A. 10Mbps
  B. 100Mbps
  C. 1000Mbps
  D. 10Gbps
  B. 100Mbps

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  Category 5 cable (Cat 5) is a twisted pair cable for carrying signals. This type of cable is used in structured cabling for computer networks such as Ethernet. The cable standard provides performance of up to 100 MHz and is suitable for 10BASE- T, 100BASE-TX (Fast Ethernet), and 1000BASE-T (Gigabit Ethernet)

• Question 122:

  A customer is having problems connecting to a wireless network in a shared office space. The customer can detect several other wireless network signals. All of the wireless networks have different SSIDs but several are using the same encryption type. Which of the following should be configured on the customer's wireless network to improve connectivity to the wireless network?

  A. Change the SSID to match other wireless networks for increased throughput.
  B. Change the encryption type to a different mechanism to avoid interference.
  C. Change the channel to a different channel than the other wireless networks.
  D. Change the WAP to a different manufacturer than the other wireless networks.
  C. Change the channel to a different channel than the other wireless networks.

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  To reduce interference between wireless APs, ensure that wireless APs with overlapping signals use unique channel frequencies. The 802.11b standard reserves 14 frequency channels for use with wireless APs. You can use any other channel instead of the one that you are using.

• Question 123:

  Which of the following can function in an unsecure mode?

  A. SNMPv3
  B. SSH
  C. SSL
  D. SCP
  A. SNMPv3

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  SNMPv3 makes no changes to the protocol aside from the addition of cryptographic security, it looks much different due to new textual conventions, concepts, and terminology.SNMPv3 primarily added security and remote configuration enhancements to SNMP

• Question 124:

  Which of the following can use a third party back-end LDAP user database for authentication?

  A. ISAKMP
  B. TACACS+
  C. PKI
  D. CHAP
  B. TACACS+

• Question 125:

  Which of the following cables would BEST be used to extend a network through an 80 feet (262 meters) machine shop that has many high voltage machines and generators running?

  A. CAT5
  B. CAT6
  C. Coaxial
  D. Fiber
  D. Fiber

• Question 126:

  Users have reported choppy audio in phone conversations since the implementation of SIP phones on the network. Which of the following should be implemented to alleviate the delays?

  A. Caching
  B. VoIP
  C. QoS
  D. SMTP
  C. QoS

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  By Qos we can prioritize the voice packets over data network.So delay and latency will get reduce.

• Question 127:

  A technician is troubleshooting a printing issue where some users in an office are unable to print. Which of the following should be the FIRST step in troubleshooting this issue?

  A. Reboot each of the workstations
  B. Ask users if anything changed in their environment recently
  C. Advise users to move to a different office
  D. Power cycle the printer
  B. Ask users if anything changed in their environment recently

• Question 128:

  Which of the following protocols is used by Windows to securely access a remote computer?

  A. RAS
  B. Telnet
  C. PPP
  D. RDP
  D. RDP

• Question 129:

  Which of the following protocols does DNS utilize on port 53?

  A. TCP
  B. FTP
  C. RTP
  D. ICMP
  A. TCP

• Question 130:

  An administrator needs to install a WAP in a location where there is no electrical wiring. Which of the following should the administrator use to complete a successful installation?

  A. Coaxial
  B. Wireless bridge
  C. PoE
  D. Multimode fiber
  C. PoE

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  PoE provides both data and power connections in one cable, so equipment doesn't require a separate cable for each need.