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JK0-023 Latest Exam (Sep 2017)

[Free] 2017(Sep) EnsurePass Braindumps CompTIA JK0-023 Dumps with VCE and PDF 651-660

September 18, 2017

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2017 Sep CompTIA Official New Released JK0-023
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CompTIA Network certification

Question No: 651 – (Topic 6)

A network technician visits a site that needs voice connectivity to the corporate office and installs four IP phones. The phone exchange resides at the telephone company. Which of the following technologies is being used?

  1. Virtual switch

  2. Virtual server

  3. Virtual desktop

  4. Virtual PBX

Answer: D

Question No: 652 – (Topic 6)

A technician has installed a group of layer 2 switches with multiple VLANs. The VLANs cannot talk to each other. Which of the following network devices could correct this problem? (Select TWO).

  1. Hub

  2. DNS server

  3. DHCP server

  4. Layer 3 switch

  5. Router

Answer: D,E

Question No: 653 – (Topic 6)

A network administrator has been assigned the 192.168.2.64/26 network and assigns the following computer’s IP addresses:

192.168.2.70

192.168.2.100

192.168.2.125

192.168.2.130

When the administrator tries to ping the other computers from 192.168.2.130, an ECHO REPLY is not received. Which of the following must the network administrator do?

A. Change the IP of 192.168.2.130 to 192.168.1.128.

B. Change the IP of 192.168.2.130 to 192.168.2.126.

  1. Change the default gateway of 192.168.2.130 accordingly.

  2. Reconfigure the switch for the right VLAN.

Answer: B

Question No: 654 – (Topic 6)

Zach, a technician, discovers a switch is not communicating with the other switches in a stack. Which of the following is the MOST likely cause?

  1. Both T568A and T568B standards are being used.

  2. STP is disabled.

  3. The cable is not a crossover.

  4. The port is not trunked.

Answer: C

Question No: 655 – (Topic 6)

Which of the following ports does IMAP use by default?

A. 110

B. 123

C. 143

D. 443

Answer: C

Question No: 656 – (Topic 6)

Which of the following separates broadcast domains?

  1. Port mirroring

  2. Router

  3. Convergence

  4. Switch

Answer: B

Question No: 657 – (Topic 6)

Which of the following protocols would be used to send email to an email server?

  1. NTP

  2. FTP

  3. SNMP

  4. SMTP

Answer: D

Question No: 658 – (Topic 6)

Which of the following problems is MOST likely to arise when configuring an IPv6 over IPv4 tunnel?

  1. Routing loop

  2. MTU black hole

  3. Framing errors

  4. SYN flood

Answer: B

Question No: 659 – (Topic 6)

If a wireless key gets compromised, which of the following would MOST likely prevent an unauthorized device from getting onto the network?

  1. Device placement

  2. Wireless standard

  3. Encryption type

  4. MAC filtering

Answer: D

Question No: 660 – (Topic 6)

Which of the following dynamic routing protocols selects routing paths based upon hop count?

  1. BGP

  2. RIP

  3. OSPF

  4. IGRP

Answer: B

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