CompTIA N10-008 Online Practice Questions and Exam Preparation

CompTIA N10-008 Online Questions & Answers

• Question 621:

  Which of the following cables is the most appropriate to use when running bulk cables in ceilings?

  A. Plenum
  B. Coaxial
  C. Ethernet
  D. DAC
  A. Plenum

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  Explanation/Reference:

  Plenum cable is the most appropriate to use when running bulk cables in ceilings because it is designed to meet fire safety standards and reduce the risk of toxic smoke in plenum spaces, which are areas with air flow above or below floors.

• Question 622:

  Which of the following devices have the capability to allow communication between two different subnetworks? (Select TWO).

  A. IDS
  B. Access point
  C. Layer 2 switch
  D. Layer 3 switch
  E. Router
  F. Media converter
  D. Layer 3 switch
  E. Router

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  Explanation/Reference:

  The devices that have the capability to allow communication between two different subnetworks are Router and Layer 3 switch.

  Routers and Layer 3 switches operate at the network layer (Layer 3) of the OSI model and can perform IP routing to connect different subnetworks. They can also perform other functions such as packet filtering, network address translation (NAT), and access control.

  IDS (Intrusion Detection System), access points, Layer 2 switches, and media converters operate at lower layers of the OSI model and do not have the same capability as routers and Layer 3 switches to connect different subnetworks.

• Question 623:

  Which of the following kinds of targeted attacks uses multiple computers or bots to request the same resource repeatedly?

  A. On-path
  B. DDoS
  C. ARP spoofing
  D. MAC flooding
  B. DDoS

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  Explanation/Reference:

  A DDoS makes the most sense because in a DDoS attack, the threat actor uses multiple computers that are infected to constantly make requests to a server which overwhelms it and causes network interruption.

• Question 624:

  A network administrator is troubleshooting a client's device that cannot connect to the network. A physical inspection of the switch shows the RJ45 is connected. The NIC shows no activity lights. The network administrator moves the device to another location and connects to the network without issues. Which of the following tools would be the BEST option for the network administrator to use to further troubleshoot?

  A. Tone generator
  B. Multimeter
  C. Optical time-domain reflectometer
  D. Cable tester
  D. Cable tester

• Question 625:

  A technician is investigating packet loss to a device that has varying data bursts throughout the day. Which of the following will the technician MOST likely configure to resolve the issue?

  A. Flow control
  B. Jumbo frames
  C. Duplex
  D. Port mirroring
  A. Flow control

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  Explanation/Reference:

  Ethernet flow control is a mechanism for temporarily stopping the transmission of data on Ethernet family computer networks. The goal of this mechanism is to avoid packet loss in the presence of network congestion. Flow control is a mechanism that allows a device to regulate the amount of data it receives from another device, ensuring that the receiving device is not overwhelmed with data. If the device experiencing packet loss is receiving large bursts of data at times when it is not able to process it quickly enough, configuring flow control could help prevent packets from being lost.

  "In theory, flow control can help with situations like a host that can't keep up with the flow of traffic. It enables the host to send an Ethernet PAUSE frame, which asks the switch to hold up for some amount of time so the host can catch its breath. If the switch can, it'll buffer transmissions until the pause expires, and then start sending again. If the host catches up early, it can send another PAUSE frame with a delay of zero to ask the switch to resume. In practice, flow control can cause latency trouble for modern real-time applications such as VoIP, and the same needs are usually met by QoS"

• Question 626:

  A network architect is developing documentation for an upcoming IPv4/IPv6 dual-stack implementation. The architect wants to shorten the following IPv6 address: ef82:0000:0000:0000:0000:1ab1:1234:1bc2. Which of the following is the MOST appropriate shortened version?

  A. ef82:0:1ab1:1234:1bc2
  B. ef82:0::1ab1:1234:1bc2
  C. ef82:0:0:0:0:1ab1:1234:1bc2
  D. ef82::1ab1:1234:1bc2
  D. ef82::1ab1:1234:1bc2

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  Explanation/Reference:

  The most appropriate shortened version of the given IPv6 address is ef82:0::1ab1:1234:1bc2. This version uses the "::" notation to replace the consecutive groups of zeros, which helps simplify the address while still accurately representing the original address.

• Question 627:

  Which of the following VPN configurations should be used to separate Internet and corporate traffic?

  A. Split-tunnel
  B. Remote desktop gateway
  C. Site-to-site
  D. Out-of-band management
  A. Split-tunnel

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  Explanation/Reference:

  Split-tunnel VPN configuration should be used to separate Internet and corporate traffic. This configuration only routes the corporate traffic through the VPN tunnel while allowing Internet traffic to access the Internet directly, providing a more secure connection and reducing the load on the VPN.

• Question 628:

  A technician knows the MAC address of a device and is attempting to find the device's IP address. Which of the following should the technician look at to find the IP address? (Select TWO).

  A. ARP table
  B. DHCP leases
  C. IP route table
  D. DNS cache
  E. MAC address table
  F. STP topology
  A. ARP table
  B. DHCP leases

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  Explanation/Reference:

  ARP Table (Address Resolution Protocol): The ARP table maps IP addresses to MAC addresses within a local network segment. When a device wants to communicate with another device on the same network, it uses ARP to resolve the IP address to the corresponding MAC address. The technician can look at the ARP table to find the IP address associated with the known MAC address. DHCP Leases (Dynamic Host Configuration Protocol): DHCP is used to automatically assign IP addresses to devices on a network. DHCP servers maintain a list of leased IP addresses and the corresponding MAC addresses of devices. By checking the DHCP leases, the technician can determine the IP address that was assigned to the device with the known MAC address.

• Question 629:

  A packet is assigned a value to ensure it does not traverse a network indefinitely. Which of the following BEST represents this value?

  A. Zero Trust
  B. Planned obsolescence
  C. Time to live
  D. Caching
  C. Time to live

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  Explanation/Reference:

  The Time to Live (TTL) value is a field in the IP header of a packet that tells the number of hops (or routers) a packet can pass through before it is discarded. The TTL is typically set to a high value, such as 64 or 128, when a packet is first sent, and it is decremented by one each time the packet passes through a router. When the TTL value reaches zero, the packet is discarded, and a "time exceeded" message is sent back to the sender. This mechanism is used to prevent packets from traversing a network indefinitely, which could cause network congestion and slow down the network.

• Question 630:

  Which of the following focuses on application delivery?

  A. DaaS
  B. IaaS
  C. SaaS
  D. PaaS
  D. PaaS

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  Explanation/Reference:

  PaaS stands for Platform as a Service. It is a cloud computing service that provides a platform for developing, deploying, and managing applications. PaaS providers typically provide the following services:

  1.

  Operating system

  2.

  Programming language runtime

  3.

  Database

  4.

  Web server

  5.

  Application server