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N10-006 Latest Exam (Sep 2017)

[Free] 2017(Sep) EnsurePass Braindumps CompTIA N10-006 Dumps with VCE and PDF 11-20

September 18, 2017

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2017 Sep CompTIA Official New Released N10-006
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CompTIA Network Certification

Question No: 11 – (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: 12 – (Topic 1)

An administrator notices an unused cable behind a cabinet that is terminated with a DB-9 connector. Which of the following protocols was MOST likely used on this cable?

A. RS-232

B. 802.3

  1. ATM

  2. Tokenring

Answer: A Explanation:

A DB-9 connector is used on serial cables. Serial cables use the RS-232 protocol which defines the functions of the 9 pins in a DB-9 connector. The RS-232 standard was around long before computers. It’s rare to see a new computer nowadays with a serial port but they were commonly used for connecting external analog modems, keyboards and mice to computers.

Question No: 13 – (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: 14 – (Topic 1)

A network topology that utilizes a central device with point-to-point connections to all other devices is which of the following?

  1. Star

  2. Ring

  3. Mesh

  4. Bus

Answer: A Explanation:

A Star network is the most common network in use today. Ethernet networks with computers connected to a switch (or a less commonly a hub) form a star network. The switch forms the central component ofthe star. All network devices connect to the switch. A network switch has a MAC address table which it populates with the MAC

address of every device connected to the switch. When the switch receives data on one of its ports from a computer, it looks in the MAC address table to discover which port the destination computer is connected to. The switch then unicasts the data out through the port that the destination computer is connected to.

Question No: 15 – (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: 16 – (Topic 1)

A network engineer needs to set up a topology that will not fail if there is an outage on a single piece of the topology. However, the computers need to wait to talk on the network to avoid congestions. Which of the following topologies would the engineer implement?

  1. Star

  2. Bus

  3. Ring

  4. Mesh

Answer: C Explanation:

Token Ring networks are quite rare today. Token Ring networks use the ring topology. Despite being called a Ring topology, the ring is logical and the physical network structure often forms a ‘star’ topology with all computers on the network connecting to a central multistation access unit (MAU). The MAU implements the logical ring by transmitting signals to each node in turn and waiting for the node to send them back before it transmits to the next node. Therefore, although the cables are physically connected in a star, the data path takes the form of a ring. If any computer or network cable fails in a token ring network, the remainder of the network remains functional. The MAU has the intelligence to isolate the failed segment.

To ensure that the computers need to wait to talk on the network to avoid congestions, a Token Ring network uses a ‘token’. The token continually passes around the network until a computer needs to send data. The computer then takes the token and transmits the data beforereleasing the token. Only a computer in possession of the token can transmit data onto the network.

Question No: 17 – (Topic 1)

A host has been assigned the address 169.254.0.1. This is an example of which of the following address types?

  1. APIPA

  2. MAC

  3. Static

  4. Public

Answer: A Explanation:

APIPA stands for Automatic Private IP Addressing and is a feature of Windows operating systems. When a client computer is configured to use automatic addressing (DHCP), APIPA assigns a class B IP address from 169.254.0.0 to 169.254.255.255 to the client when a DHCP server is unavailable.

When a client computer configured to use DHCP boots up, it first looks for a DHCP server to provide the client with IP address and subnet mask. If the client is unable to contact a DHCP server, it uses APIPA to automatically configure itself with an IP address from a range that has been reserved especially for Microsoft. The client also configures itself with a default class Bsubnet mask of 255.255.0.0. The client will use the self-configured IP address until a DHCP server becomes available.

Question No: 18 – (Topic 1)

The network install is failing redundancy testing at the MDF. The traffic being transported is a mixture of multicast and unicast signals. Which of the following would BEST handle the rerouting caused by the disruption of service?

  1. Layer 3 switch

  2. Proxy server

  3. Layer 2 switch

  4. Smart hub

Answer: A Explanation:

The question states that the traffic being transported is a mixture of multicast and unicast

signals. There are three basic types of network transmissions: broadcasts, which are packets transmitted to every node on the network; unicasts,which are packets transmitted to just one node; and multicasts, which are packets transmitted to a group of nodes.

Multicast is a layer 3 feature of IPv4 amp; IPv6. Therefore, we would need a layer 3 switch (or a router) to reroute the traffic. Unlike layer 2switches 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: 19 – (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: 20 – (Topic 1)

A technician is connecting a NAS device to an Ethernet network. Which of the following technologies will be used to encapsulate the frames?

  1. HTTPS

  2. Fibre channel

  3. iSCSI

  4. MS-CHAP

Answer: C Explanation:

A NAS or a SAN will use either iSCSI or Fiber Channel. In this question, the NAS is connected to an Ethernet network. Therefore, iSCSI will most likely be used (Fiber Channel over Ethernet (FCoE) can be used but is less common). ISCSI means Internet SCSI. ISCSI uses TCP (Transmission Control Protocol) which enables it to be used over TCP/IP networks such as Ethernet.

For Fiber channel,a separate Fiber Channel network would be required unless FCoE is used.

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