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JK0-023 Latest Exam (Sep 2017)

[Free] 2017(Sep) EnsurePass Braindumps CompTIA JK0-023 Dumps with VCE and PDF 131-140

September 18, 2017

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

Question No: 131 – (Topic 1)

Which protocol is represented by the packet capture below? UDP 0.0.0.0:68 -gt; 255.255.255.255:67

  1. DHCP

  2. FTP

  3. SNMP

  4. DNS

Answer: A

Question No: 132 – (Topic 1)

A forward lookup zone converts which of the following?

  1. IP addresses to hostnames

  2. Hostnames to IP addresses

  3. MAC addresses to IP addresses

  4. IP Addresses to MAC addresses

Answer: B

Question No: 133 – (Topic 1)

A user reports that they are unable to connect to the network. Upon further investigation, a technician notices that the user has an IP address/subnet mask combination of 192.168.204.255/24. The default gateway for the network is 192.168.204.254. Which of the following could the user’s IP address be changed to so that they could connect to the network?

A. 192.168.204.0/27

B. 192.168.204.1/27

C. 192.168.204.112/24

D. 192.168.204.254/24

Answer: C

Question No: 134 – (Topic 1)

Zach, a network administrator, wants to separate the network into broadcast domains. Which of the following can he use? (Select TWO).

  1. WAPs

  2. Routers

  3. Patch panels

  4. Hubs

  5. Bridges

  6. VLANs

Answer: B,F

Question No: 135 – (Topic 1)

At which of the following layers of the OSI model does an unmanaged switch operate?

  1. Layer 1

  2. Layer 2

  3. Layer 3

  4. Layer 4

Answer: B

Question No: 136 – (Topic 1)

A technician has spent most of the day replacing a server running DHCP. Some of the users have begun to call the help desk stating that Internet connection stopped working even after rebooting. Upon investigation, the users’ PCs with issues all have IP addresses that start with 169.254.x.x. The technician completes the replacement and powers on the new DHCP server. Which of the following is the BEST way to provide the PCs with issues a new IP address?

  1. Statically assign a legitimate IP address, and then set the PCs’ NICs to DHCP

  2. Inform each user to replace 169.254 with 192.168

  3. Wait five minutes until the PC resends a DHCP request

  4. Run netstat on each PC and then reboot into safe mode

Answer: C

Question No: 137 – (Topic 1)

A user reports intermittent network connectivity from their desktop PC. A technician determines the cause to be a bad wall jack and fixes the jack. Which of the following should the technician do NEXT?

  1. Test the theory

  2. Question the user

  3. Document the outcome

  4. Verify functionality

Answer: D

Question No: 138 – (Topic 1)

Which of the following networking devices can exist at several layers of the OSI model at the same time? (Select TWO).

  1. Switch

  2. Cable

  3. Repeater

  4. Router

  5. Bridge

  6. Hub

Answer: A,D

Question No: 139 – (Topic 1)

Layers 5, 6, and 7 from the OSI model correspond to which of the following layers of the TCP/IP model?

  1. Transport

  2. Application

  3. Internet

  4. Network Interface

Answer: B

Question No: 140 – (Topic 1)

Which of the following port numbers is used for SNMP?

A. 61 B. 151 C. 161 D. 1611

Answer: C

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