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RC0-N06 Latest Exam (Sep 2017)

[Free] 2017(Sep) EnsurePass Pass4sure CompTIA RC0-N06 Dumps with VCE and PDF 21-30

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: 21 – (Topic 1)

A company has a new offering to provide access to their product from a central location rather than clients internally hosting the product on the client network. The product contains sensitive corporate information that should not be accessible from one client to another.

This is an example of which of the following?

  1. Public SaaS

  2. Private SaaS

  3. Hybrid IaaS

  4. Community IaaS

Answer: B Explanation:

SaaS stands for Software as a Service. This is a cloud model whereby a service provider provides asoftware service and makes the service available to customers over the Internet. Examples of Saas include Microsoft Office 365, Microsoft Exchange Online, Microsoft Lync Online etc.

Advantages of Saas include ease of administration: no need to install andconfigure local servers, no need to configure backups, no need to keep the software patched, no need to worry about system recovery, lower costs: saving on the purchase of server hardware and software; with SaaS, you lease the service paying either monthlyor yearly and compatibility by ensuring that all users are using the same version of software.

There are two types of SaaS: public and private. With public Saas, multiple customers (usually companies) share the same servers running the software. Withprivate Saas, the servers running the software are dedicated to a single customer which provides the isolation and extra security required when dealing with sensitive information.

Question No: 22 – (Topic 1)

A technician, Joe, has been tasked with assigning two IP addresses to WAN interfaces on connected routers. In order to conserve address space, which of the following subnet masks should Joe use for this subnet?

A. /24 B. /32 C. /28 D. /29 E. /30

Answer: E Explanation:

An IPv4 addressconsists of 32 bits. The first x number of bits in the address is the network address and the remaining bits are used for the host addresses. The subnet mask defines how many bits form the network address and from that, we can calculate how many bits are used for the host addresses.

In this question, the /30 subnet mask dictates that the first 30 bits of the IP address are used for network addressing and the remaining 2 bits are used for host addressing. The formula to calculate the number of hosts in a subnet is 2n – 2. The quot;nquot; in the host#39;s formula represents the number of bits used for host addressing. If we apply the formula (22 – 2), a

/30 subnet mask will provide 2 IP addresses.

Question No: 23 – (Topic 1)

Which of the following network topologies has a central, single point of failure?

  1. Ring

  2. Star

  3. Hybrid

  4. Mesh

Answer: B 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 of the 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.

The switch that forms thecentral component of a star network is a single point of failure. If the switch fails, no computers will be able to communicate with each other.

Question No: 24 – (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: 25 – (Topic 1)

A network technician must utilize multimode fiber to uplink a new networking device. Which of the following Ethernet standards could the technician utilize? (Select TWO).

  1. 1000Base-LR

  2. 1000Base-SR

  3. 1000Base-T

  4. 10GBase-LR

  5. 10GBase-SR

  6. 10GBase-T

Answer: B,E Explanation:

1000BASE-SX is a fiber optic Gigabit Ethernet standard for operation over multi-mode fiberwith a distance capability between 220 meters and 550 meters.

10Gbase-SRis a 10 Gigabit Ethernet LAN standard for operation over multi-mode fiber optic cable and short wavelength signaling.

Question No: 26 – (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: 27 – (Topic 1)

An F-connector is used on which of the following types of cabling?

  1. CAT3

  2. Single mode fiber

  3. CAT5

  4. RG6

Answer: D Explanation:

An F connector is a coaxial RF connector commonly used for terrestrial television, cable television and universally forsatellite television and cable modems, usually with RG-6/U cable or, in older installations, with RG-59/U cable.

Question No: 28 – (Topic 1)

Which of the following network elements enables unified communication devices to connect to and traverse traffic onto the PSTN?

  1. Access switch

  2. UC gateway

  3. UC server

  4. Edge router

Answer: B Explanation:

People use many methods of communication nowadays such as voice, email, video and instant messaging. People also use many different devices to communicate such as smart phones, PDAs, computers etc.Unified Communications (UC) enables people using different modes of communication, different media, and different devices to communicate with anyone, anywhere, at any time.

Many communication methods use digital signals. To send a digital signal over the analog PSTN, you need a gateway (in this case a UC Gateway) to convert the digital signals into an analog format that can be sent over the PSTN.

Question No: 29 – (Topic 1)

Which of the following network devices use ACLs to prevent unauthorized access into company systems?

  1. IDS

  2. Firewall

  3. Content filter

  4. Load balancer

Answer: B Explanation:

A firewall is a system designed to prevent unauthorized access to or from a private network. Firewalls arefrequently used to prevent unauthorized Internet users from accessing privatenetworks connected to the Internet, especially intranets. Firewalls use ACLs (access control lists) to determine which traffic is allowed through the firewall. All traffic entering or leaving the intranet passes through the firewall, which examines each message and blocks or allows the message depending on rules specified in the ACL. The rules in the ACL specify which combinations of source IP address, destination address in IP port numbers are allowed.

Question No: 30 – (Topic 1)

A technician has been given a list of requirements for a LAN in an older building using CAT6 cabling. Which of the following environmental conditions should be considered when deciding whether or not to use plenum-rated cables?

  1. Workstation models

  2. Window placement

  3. Floor composition

  4. Ceiling airflow condition

Answer: D Explanation:

In a large building, the ‘plenum’ is the space between floors used to circulate air through the building. This space is also an ideal place to run computer network cabling. However, in the event of fire in the building, the network cables can be very hazardous because when they burn, the cable insulation gives off a poisonous smoke that gets circulated around the building. Furthermore, the burning cables help to spread the fire.

Plenum-rated cables are designed to be cabled through the plenum in a building. Plenum- rated cables are covered in fire-retardant plastic jacket to avoid the risk of toxic smoke being circulated around the building.

QUESTIONNO: 40

A VLAN with a gateway offers no security without the addition of:

A. An ACL. B. 802.1w.

C. A RADIUS server. D. 802.1d.

Answer: A

A gateway in a VLAN connects to another network. The other network can be the Internet, another subnet on the network or another VLAN. The gateway will be a router and for security, it should also be a firewall.

A firewall is a system designed to prevent unauthorized access to or from a private network. Firewalls are frequently used to prevent unauthorized Internet users from

accessing private networks connected to the Internet, especially intranets. Firewalls use ACLs (access control lists) to determine which traffic is allowed through the firewall. All traffic entering or leaving the intranet passes through the firewall, which examines each message and blocks or allows the message depending on rules specified in the ACL. The rules in the ACL specify which combinations of source IP address, destination address in IP port numbers are allowed.

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