[Free] 2018(June) Dumps4cert CompTIA RC0-N06 Dumps with VCE and PDF Download 111-120

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CompTIA Network Recertification Exam for Continuing Education

Question No: 111 – (Topic 4)

A network administrator recently installed a web proxy server at a customer#39;s site. The following week, a system administrator replaced the DNS server overnight. The next day, customers began having issues accessing public websites. Which of the following will resolve the issue?

  1. Update the DNS server with the proxy server information.

  2. Implement a split horizon DNS server.

  3. Reboot the web proxy and then reboot the DNS server.

  4. Put the proxy server on the other side of the demarc.

Answer: A Explanation:

Proxy servers act as an intermediary for requests from clients seeking resourcesfrom other servers. If the DNS server is not communicating with the proxy server, these requests are

not forwarded. Therefore, updating the DNS server with the proxy server information will solve the problem.

Question No: 112 – (Topic 4)

A network technician has received a help desk ticket indicating that after the new wireless access point was installed, all of the media department#39;s devices are experiencing sporadic wireless connectivity. All other departments are connecting just fine and the settings on the new access point were copied from the baseline. Which of the following is a reason why the media department is not connecting?

  1. Wrong SSID

  2. Rogue access point

  3. Placement

  4. Channel mismatch

Answer: C Explanation:

The sporadic wireless connectivity is being caused by interference. Moving the access point to adifferent location would solve the problem.

Question No: 113 – (Topic 4)

Which of the following helps prevent routing loops?

  1. Routing table

  2. Default gateway

  3. Route summarization

  4. Split horizon

Answer: D Explanation:

Routing loops occur when the routing tables on the routers are slow to update and a redundant communication cycle is created between routers. Split horizon, which prevents the router from advertising a route back to the other router from whichit was learned, can be used to resist routing loops. Poison reverse, also known as split horizon with poison reverse, is also used to resist routing loops.

Question No: 114 – (Topic 4)

An administrator only has telnet access to a remote workstation. Which of the following utilities will identify if the workstation uses DHCP?

  1. tracert

  2. ping

  3. dig

  4. ipconfig

  5. netstat

Answer: D Explanation:

The ipconfig command displays the TCP/IP configuration of a Windows system. The ipconfig /all command displays the system’s TCP/IPconfiguration in detail. This output includes whether DHCP is enabled or not.

Question No: 115 – (Topic 4)

After connecting a workstation directly to a small business firewall, a network administrator is trying to manage it via HTTPS without losing its stored configuration. The only two pieces of information that the network administrator knows about the firewall are the management interface MAC address, which is 01:4a:d1:fa:b1:0e, and the administrator#39;s password.

Which of the following will allow the administrator to log onto the firewall via HTTPS if the management#39;s IP address is unknown and the administrator#39;s workstation IP address is

  1. Use the reset button on the back of the firewall to restore it to its factory default, and then log onto

  2. Run the following command on the administrator#39;s workstation: arp -s 01:4a:d1:fa:b1:0e

  3. Use an SNMP tool to query the firewall properties and determine the correct management IP address

  4. Use a crossover cable to connect to the console port and reconfigure the firewall management IP to

Answer: B Explanation:

Address Resolution Protocol (ARP) is used to resolve IP addresses to MAC addresses. The arp -s command addsa static permanent address to the ARP cache. This will allow the administrator to access the firewall.

Question No: 116 – (Topic 4)

Which of the following WAN technologies is associated with high latency?

  1. T1

  2. Satellite

  3. Cable

  4. OCx

Answer: B Explanation:

Latency in this instance is the time it takes for the signal to and from the satellite. Since

signal has to travel to the satellite, then from the satellite to the ground station, and then out to the Internet (or IP WAN). Not forgetting the return trip, and processing delays.

Question No: 117 – (Topic 4)

While troubleshooting a network outage, a technician finds a 100-meter fiber cable with a small service loop and suspects it might be the cause of the outage. Which of the following is MOST likely the issue?

  1. Maximum cable length exceeded

  2. Dirty connectors

  3. RF interference caused by impedance mismatch

  4. Bend radius exceeded

Answer: D Explanation:

Theexcessive bending of fiber-optic cables can increase microbending and macrobending losses. Microbending causes light attenuation induced by deformation of the fiber, while macrobending causes the leakage of light through the fiber cladding and this is morelikely to happen where the fiber is excessively bent.

Question No: 118 – (Topic 4)

A network technician has received comments from several users that cannot reach a particular website. Which of the following commands would provide the BEST information about the path taken across the network to this website?

  1. ping

  2. netstat

  3. telnet

  4. tracert

Answer: D Explanation:

The tracert command is used to determine the amount of hops a packet takes to reach a destination. It makesuse of ICMP echo packets to report information at every step in the journey. This is how the path taken across the network is obtained.

Question No: 119 – (Topic 4)

A company has changed ISPs for their office and ordered a new 250 Mbps symmetrical Internet connection. As a result, they have been given a new IP range. The ISP has assigned the company /28. The company gateway router has the following interface configuration facing the ISP:

Interface A:

IP address:

Subnet mask:

Default gateway:

Speed: 1000 Mbps Duplex: Auto

State: No Shutdown

None of the workstations at the company are able to access the Internet. Which of the following are the reasons? (Select TWO).

  1. There is a duplex mismatch between the router and ISP.

  2. The router interface is turned off.

  3. The interface is set to the incorrect speed.

  4. The router is configured with the incorrect subnet mask.

  5. The router interface is configured with the incorrect IP address.

  6. The default gateway is configured incorrectly.

Answer: E,F Explanation:

According to the IP Address Range Calculator, for the given subnet mask and the IP range address range assigned by the ISP, the first host address should be and the broadcast address should be Therefore, the router interface is configured with the incorrect IP address and the default gateway is configured incorrectly.

Question No: 120 – (Topic 4)

Ann, a user, is experiencing an issue with her wireless device. While in the conference area, the wireless signal is steady and strong. However, at her desk the signal is consistently dropping, yet the device indicates a strong signal. Which of the following is the MOST likely cause of the issue?

  1. Signal-to-noise ratio

  2. AP configuration

  3. Incorrect SSID

  4. Bounce

Answer: D Explanation:

The signal between the access point and Ann’s wireless device is being bounced off walls, windows, glass mirrors, carpeted floors, and many other objects. This results in the slow connection. The radio waves are travelling at the same rate, but as a result of signal bounce, it#39;s taking longer to reach its destination.

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