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RC0-N06 Latest Exam (Sep 2017)

[Free] 2017(Sep) EnsurePass Pass4sure CompTIA RC0-N06 Dumps with VCE and PDF 31-40

September 19, 2017

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2017 Sep CompTIA Official New Released RC0-N06
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CompTIA Network Recertification Exam for Continuing Education

Question No: 31 – (Topic 1)

An organization requires a second technician to verify changes before applying them to network devices. When checking the configuration of a network device, a technician determines that a coworker has improperly configured the AS number on the device. This would result in which of the following?

  1. The OSPF not-so-stubby area is misconfigured

  2. Reduced wireless network coverage

  3. Spanning tree ports in flooding mode

  4. BGP routing issues

Answer: D Explanation:

BGP (Border Gateway Protocol) is used to route data between autonomous systems (AS’s) A collection of networks that fall within the same administrative domain is called an autonomous system (AS).

The routers within an AS use an interior gateway protocol, such as the Routing Information Protocol (RIP) or the Open Shortest Path First (OSPF) protocol, to exchange routing

information among themselves. At the edges of an AS are routers that communicate with the other AS’s on the Internet, using an exterior gateway protocol such as the Border Gateway Protocol (BGP).

Question No: 32 – (Topic 1)

Which of the following network infrastructure implementations would be used to support files being transferred between Bluetooth-enabled smartphones?

  1. PAN

  2. LAN

  3. WLAN

  4. MAN

Answer: A Explanation:

PAN stands for Personal Area Network. It is a network of devices in the area of a person typically within a range of 10 meters and commonly using a wirelesstechnology such as Bluetooth or IR (Infra-Red).

Question No: 33 – (Topic 1)

Which of the following connection types is used to terminate DS3 connections in a telecommunications facility?

  1. 66 block

  2. BNC

  3. F-connector

  4. RJ-11

Answer: B Explanation:

A DS3 (Digital Signal 3) is also known as a T3 line with a maximum bandwidth of 44.736 Mbit/s. DS3 uses 75 ohm coaxial cable and BNC connectors.

Question No: 34 – (Topic 1)

Which of the following is an example of an IPv4 address?

A. 192:168:1:55

B. 192.168.1.254

C. 00:AB:FA:B1:07:34

D. ::1

Answer: B Explanation:

AnIPv4 address is notated as four decimal numbers each between 0 and 255 separated by dots (xxx.xxx.xxx.xxx). Each number is known as an octet as it represents eight binary bits. All four octets make up a 32-bit binary IPv4 address.

In this question, 192.168.1.254 is a valid IPv4 address.

Question No: 35 – (Topic 1)

A company wants to create highly available datacenters. Which of the following will allow the company to continue to maintain an Internet presence at all sites in the event that a WAN circuit at one site goes down?

  1. Load balancer

  2. VRRP

  3. OSPF

  4. BGP

Answer: D Explanation:

A collection of networks that fall within the same administrative domain is called an autonomous system (AS). In this question, each datacenter will be an autonomous system. The routers within an AS use an interior gateway protocol, such as the Routing Information Protocol (RIP) or the Open Shortest Path First (OSPF) protocol, to exchange routing information among themselves. At the edges of an AS are routers that communicate with the other AS’s on the Internet, using an exterior gateway protocol such as the Border Gateway Protocol (BGP).

If a WAN link goes down, BGP will route datathrough another WAN link if redundant WAN links are available.

Question No: 36 – (Topic 1)

A technician needs to limit the amount of broadcast traffic on a network and allow different segments to communicate with each other. Which of the following options would satisfy these requirements?

  1. Add a router and enable OSPF.

  2. Add a layer 3 switch and create a VLAN.

  3. Add a bridge between two switches.

  4. Add a firewall and implement proper ACL.

Answer: B Explanation:

We can limit the amount of broadcast traffic on a switched network by dividing the computers into logical network segments called VLANs.

A virtual local area network (VLAN) is a logical group of computers that appear to be on the

same LAN even if they are on separate IP subnets. These logical subnets are configured in the network switches. Each VLAN is a broadcast domain meaning that only computers within the same VLAN will receive broadcast traffic.

Toallow different segments (VLAN) to communicate with each other, a router is required to establish a connection between the systems. We can use a network router to route between the VLANs or we can use a ‘Layer 3’ switch. Unlike layer 2 switches that can only read the contents of the data-link layer protocol header in the packets they process, layer 3 switches can read the (IP) addresses in the network layer protocol header as well.

Question No: 37 – (Topic 1)

A technician is helping a SOHO determine where to install the server. Which of the following should be considered FIRST?

  1. Compatibility requirements

  2. Environment limitations

  3. Cable length

  4. Equipment limitations

Answer: B Explanation:

SOHO stands for Small Office / Home Office. A SOHO network istypically a small network. Being a small network, it is unlikely that it will have a datacenter or even a dedicated server room. Any servers installed in the network will still have the same environmental requirements as servers in a large network. The servers should be in a secure isolated

area if required. The servers also need to be kept cool and dry. Therefore, the first consideration in a SOHO office is “Environment limitations”: where the servers and other network hardware will be located.

Question No: 38 – (Topic 1)

A technician needs to set aside addresses in a DHCP pool so that certain servers always receive the same address. Which of the following should be configured?

  1. Leases

  2. Helper addresses

  3. Scopes

  4. Reservations

Answer: D Explanation:

A reservation is used in DHCP to ensure that a computer always receives the same IP address. To create a reservation, you need to know the hardware MAC address ofthe network interface card that should receive the IP address.

For example, if Server1 has MAC address of 00:A1:FB:12:45:4C and that computer should always get 192.168.0.7 as its IP address, you can map the MAC address of Server1 with the IP address to configure reservation.

Question No: 39 – (Topic 1)

When configuring a new server, a technician requests that an MX record be created in DNS for the new server, but the record was not entered properly. Which of the following was MOST likely installed that required an MX record to function properly?

  1. Load balancer

  2. FTP server

  3. Firewall DMZ

  4. Mail server

Answer: D Explanation:

A mail exchanger record (MX record) is a DNS record used by email servers to determine the name of the email server responsiblefor accepting email for the recipient’s domain.

For example a user sends an email to recipient@somedomain.com. The sending user’s email server will query the somedomain.com DNS zone for an MX record for the domain. The MX record will specify the hostnameof the email server responsible for accepting email for the somedomain.com domain, for example, mailserver.somedomain.com. The sending email server will then perform a second DNS query to resolve mailserver.somedomain.com to an IP address. The sending mailserver will then forward the email to the destination mail server.

Topic 2, Network operations

Question No: 40 – (Topic 2)

A system administrator has been tasked to ensure that the software team is not affecting the production software when developing enhancements. The software that is being updated is on a very short SDLC and enhancements must be developed rapidly. These enhancements must be approved before being deployed. Which of the following will mitigate production outages before the enhancements are deployed?

  1. Implement an environment to test the enhancements.

  2. Implement ACLs that only allow management access to the enhancements.

  3. Deploy an IPS on the production network.

  4. Move the software team#39;s workstations to the DMZ.

Answer: A Explanation:

Environments are controlled areas where systems developers can build, distribute, install, configure, test, and execute systems that move through the Software Development Life Cycle (SDLC). The enhancements can be deployed and tested in a test environment before they are installed in the production environment.

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