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JK0-023 Latest Exam (Sep 2017)

[Free] 2017(Sep) EnsurePass Braindumps CompTIA JK0-023 Dumps with VCE and PDF 11-20

September 18, 2017

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

Question No: 11 – (Topic 1)

A technician finds that the network card is no longer functioning. At which of the following OSI layers is the problem occurring?

  1. Layer 1

  2. Layer 3

  3. Layer 5

  4. Layer 7

Answer: A

Question No: 12 – (Topic 1)

Which of the following TCP/IP model layers combines four OSI model layers?

  1. Application Layer

  2. Internet Layer

  3. Transport Layer

  4. Network Interface Layer

Answer: A

Question No: 13 – (Topic 1)

A network administrator notices that load balancing is not working properly on the web cluster as previously configured. In speaking with management, a change to the IP addressing scheme was made yesterday which possibly affected one member of the cluster. Due to the timing of the events, the administrator theorizes that this change caused the problem. Which of the following should the administrator do NEXT?

  1. Escalate to the management team

  2. Change the IP address back to its previous state

  3. Test the theory by analyzing logs

  4. Create a plan of action to present to management

Answer: C

Question No: 14 – (Topic 1)

Which of the following services are affected by closing the default ports of 80 and 21 via ACL on a company router?

  1. FTP and basic Internet traffic

  2. HTTPS and IMAP traffic

  3. DNS and TELNET traffic

  4. VPN and RDP traffic

Answer: A

Question No: 15 – (Topic 1)

At which of the following layers does HTML operate?

  1. Layer 2

  2. Layer 3

  3. Layer 5

  4. Layer 7

Answer: D

Question No: 16 – (Topic 1)

In order for switching loops to be automatically disabled, which of the following needs to be implemented?

  1. Routing tables

  2. Collision domains

  3. Port mirroring

  4. Spanning-tree protocol

Answer: D

Question No: 17 – (Topic 1)

Which of the following allows for groups of ports on the same switch to operate as a part of different segmented networks?

  1. RIP

  2. STP

  3. VLAN

  4. MTU

Answer: C

Question No: 18 – (Topic 1)

Which of the following is a Class A private IP address?

A. 4.2.2.2

B. 10.1.1.45

C. 169.254.9.15

D. 192.168.0.100

Answer: B

Question No: 19 – (Topic 1)

The MAC address of a network device is used to communicate at which of the following OSI layers?

  1. Layer 1

  2. Layer 2

  3. Layer 4

  4. Layer 5

Answer: B

Question No: 20 – (Topic 1)

Which of the following DNS records is used in conjunction with 192:168::1:10?

  1. AAAA

  2. MX

  3. TXT

  4. PTR

Answer: A

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