CompTIA JK0-016 Online Practice Questions and Exam Preparation

CompTIA JK0-016 Online Questions & Answers

• Question 721:

  A technician replaces a failed router in an office with the same model unit using the default settings. After the installation, the technician reboots all of the PCs and servers. Upon reboot some of the PCs are receiving IP addresses on the same subnet as the new router; other PCs are receiving addresses on the same subnet as the servers. Which of the following most likely describes the issue?

  A. The DHCP lease pool was not large enough
  B. DHCP lease times were set too low
  C. The router is not the only DHCP server
  D. DHCP was not enabled on the replacement router
  C. The router is not the only DHCP server

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  This happens when there are multiple DHCP servers in the same LAN subnet. Here some machines are getting ip address from the router while some are getting ip address from another DHCP server present in the same domain.

• Question 722:

  Which of the following OSI model layers are present in the application layer of the TCP/IP model? (Select TWO).

  A. Data Link
  B. Transport
  C. Network
  D. Session
  E. Presentation
  D. Session
  E. Presentation

• Question 723:

  Which of the following network protocols would be used to transmit traps across a network to a log server?

  A. SMTP
  B. PPPoE
  C. POP3
  D. SNMP
  D. SNMP

• Question 724:

  Joe, a network technician, is tasked with setting up a new wireless network in an office for office laptops and desktops only. The surrounding offices already have many wireless networks. Joe discovered that over 30 wireless networks were showing up as he completed a wireless survey of the office. Every single one of the networks that Joe was able to see while conducting the wireless survey were 802.11b/g networks. Which of the following should Joe consider before purchasing/installing the new wireless access points?

  A. Move the WAP so that it is close to the interior walls.
  B. Determine which wireless channels and bands to use to mitigate as much interference as possible.
  C. Turn the SSID broadcasts off to decrease interference.
  D. Determine if the business should relocate to a building with a lot less surrounding wireless networks.
  B. Determine which wireless channels and bands to use to mitigate as much interference as possible.

• Question 725:

  A company is experiencing a denial of service attack and wants to identify the source IP address of the attacker in real time. Which method is the BEST way to accomplish this?

  A. Network sniffer
  B. Syslog
  C. SNMPv3
  D. System logs
  A. Network sniffer

• Question 726:

  Which of the following connector types is MOST commonly used for serial connections?

  A. MTRJ
  B. RJ-11
  C. RS-232
  D. RJ-45
  C. RS-232

• Question 727:

  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.

• Question 728:

  The DHCP server leases IP addresses 10.162.233.158 to WBAC11 for a period of 14 days. At which of the following times would WBAC11 send an initial request to the DHCP server to renew the IP address lease?

  A. Day 4
  B. Day 6
  C. Day 8
  D. Day 10
  C. Day 8

• Question 729:

  A technician has determined that calls placed over a wireless connection are breaking up and the speaker's voices are delayed. This is making conversation difficult. This is a symptom of which of the following network issues?

  A. Latency
  B. Bad GBIC
  C. Bad SFP
  D. SSID mismatch
  A. Latency

• Question 730:

  Which of the following technologies is used to connect public networks using POTS lines?

  A. OC3
  B. OC12
  C. PSTN
  D. Cable
  C. PSTN

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  The PSTN consists of telephone lines, fiber optic cables, microwave transmission links, cellular networks, communications satellites, and undersea telephone cables, all interconnected by switching centers, thus allowing any telephone in the world to communicate with any other