CompTIA JK0-016 Online Practice Questions and Exam Preparation

CompTIA JK0-016 Online Questions & Answers

• Question 571:

  The security measure used to reduce vulnerabilities for MOST network devices that require regular application and monitoring is:

  A. patch management
  B. security limitations
  C. documentation
  D. social engineering
  A. patch management

  ---

  A patch is a piece of software designed to fix security vulnerabilities and other bugs, and improving the usability or performance.

• Question 572:

  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 573:

  A user reports that several spots within the company's office have intermittent connectivity issues with the newly installed wireless network. There are several WAPs located around the office to provide a strong signal wherever the users are. Which of the following is the MOST likely cause of the problem?

  A. Incompatible network card
  B. Channel overlap
  C. Latency
  D. WEP encryption
  B. Channel overlap

  ---

  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.

• Question 574:

  Which of the following cable types is required to run through an air duct?

  A. UTP
  B. Fiber
  C. PVC
  D. Plenum
  D. Plenum

  ---

  Plenum rated cable has a special insulation that has low smoke and low flame characteristics. Plenum cable is mandated to be installed in any "air handling" space. For example, most large office buildings use the ceiling to return air to the AC unit. This qualifies this ceiling as a plenum ceiling, and all the cables that go through that ceiling must be plenum rated.

• Question 575:

  Which of the following protocols provides a secure connection between two networks?

  A. L2TP
  B. IPSec
  C. PPP
  D. PPTP
  B. IPSec

• Question 576:

  Which of the following WAN technologies has the highest latency?

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

• Question 577:

  A technician has configured a router to authenticate VPN users to an LDAP server on the network. In order to allow the authentication service, both UDP and TCP ports needed to be allowed on the router. Which of the following services was MOST likely used?

  A. Kerberos
  B. TACACS+
  C. RADIUS
  D. 802.1x
  C. RADIUS

• Question 578:

  Which of the following network media connectors can use a MAXIMUM of two copper wire pairs?

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

• Question 579:

  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 580:

  Some employees are unable to maintain a wireless network connection. The network's wireless infrastructure is comprised of three different buildings with the configurations listed below. Wireless network in Building A and C is used exclusively for internal employees and Building B is used for visitors and requires no additional configuration on their devices. Which of the following settings would need to be modified to provide the BEST wireless experience for all employees as they move between buildings? Building ABuilding BBuilding C Channel: 1Channel: 6Channel: 11 Encryption: WPA2Encryption: OpenEncryption: WPA2 SSID. CorpSSID. GuestSSID. Sales

  A. Change Channel in Building B to 7
  B. Change Encryption in Building B to match A and C
  C. Change Channel in Building C to 1
  D. Change SSID in Building C to match Building A
  D. Change SSID in Building C to match Building A

  ---

  The configuration difference between users in building A and C is that they have same encryption however the SSID is different so the user has to manually authenticate and connect to the network whenever he will move between buildings. If the SSID's are same then he will not have to authenticate himself again and he will get automatic connectivity.