CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 581:

  The phone company has provided a channelized T1 line. Which of the following should this line be connected to?

  A. Switch
  B. CSU/DSU
  C. IDF
  D. MDF
  B. CSU/DSU

• Question 582:

  A large corporate office is looking to place smaller network closets around campus to handle switching for remote workstations. To which of the following is this referring?

  A. MDF
  B. VPN
  C. RDP
  D. IDF
  D. IDF

• Question 583:

  Which of the following network protocols is used to resolve FQDNs to IP addresses?

  A. DNS
  B. FTP
  C. DHCP
  D. APIPA
  A. DNS

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  An Internet service that translates domain names into IP addresses. Because domain names are alphabetic, they're easier to remember. The Internet however, is really based on IP addresses. Every time you use a domain name, therefore, a DNS service must translate the name into the corresponding IP address. For example, the domain name www.example.com might translate to 198.105.232.4.

• Question 584:

  An IP address assigned from a DHCP server is said to be which of the following?

  A. Hybrid
  B. Dynamic
  C. Secure
  D. Static
  B. Dynamic

• Question 585:

  Which wireless standard works at a MAXIMUM data rate of up to 54Mbps?

  A. 802.11b
  B. 802.11g
  C. 802.11n
  D. 802.1q
  B. 802.11g

• Question 586:

  A stateful point to point wireless connection going down for a few hours at a time is MOST likely due to which of the following?

  A. Interference
  B. Configuration
  C. Incorrect MTU size
  D. Incorrect IP
  A. Interference

• Question 587:

  A customer is implementing a VoIP infrastructure using an existing network. The customer currently has all network devices on the same subnet and would like the phones to be powered without the use of an AC adapter. Which of the following features should be enabled and configured to allow for reliable performance of the VoIP system? (Select THREE).

  A. WEP
  B. PoE
  C. VLANs
  D. SSL VPN
  E. IDS
  F. QoS
  B. PoE
  C. VLANs
  F. QoS

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  As customer don't want to use Ac adapter so Power over Ethernet is best option (PoE) as in this switch provide power to phones.Phones will transfer their power requirement via cdp to vlan assigned.And Qos provide the voice packet priority over the data packets to avoid jitter.

• Question 588:

  A technician is not getting a link light on two switches connected by a fiber cable. After the cable tests good, which of the following should the technician check NEXT?

  A. Open shorts
  B. Excessive DB loss
  C. TXRX reversed
  D. Split cables
  C. TXRX reversed

• Question 589:

  Which of the following is used to describe trunking VLANs on a network?

  A. 802.11a
  B. 802.11i
  C. 802.1q
  D. 802.1x
  C. 802.1q

• Question 590:

  Which of the following defines the amount of time a host retains a specific IP address before it is renewed or released?

  A. DHCP lease
  B. DNS suffix
  C. Subnet mask
  D. DHCP reservation
  A. DHCP lease

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  By default, each IP address assigned by a DHCP Server comes with a one-day lease, which is the amount of time that the address is valid.