Practice Free N10-008 Exam Online Questions
The network engineer receives a new router to use for WAN connectivity.
Which of the following best describes the layer the network engineer should connect the new router to?
- A . Core
- B . Leaf
- C . Distribution
- D . Access
C
Explanation:
The distribution layer is the layer that connects the access layer to the core layer in a hierarchical network design. The distribution layer is responsible for routing, filtering, and policy enforcement between the LAN and the WAN. A router is a layer 3 device that can perform these functions and connect to different WAN technologies.
Reference: CompTIA Network+ N10-008 Certification Study Guide, page 151
CompTIA Network+ N10-008 Cert Guide, Deluxe Edition, page 322 CompTIA Network+ N10-008 Exam Cram, page 233
A network engineer needs to change an entire subnet of SLAAC-configured workstation addresses.
Which of the following methods would be the best for the engineer to use?
- A . Change the address prefix in ARP in order for the workstations to retrieve their new addresses.
- B . Change the address prefix in a router in order for the router to advertise the new prefix with an ND.
- C . Change the address prefix scope in a DHCP server in order for the workstations to retrieve their new addresses.
- D . Change the workstations’ address prefix manually because an automated method does not exist.
B
Explanation:
SLAAC (Stateless Address Autoconfiguration) is a mechanism that enables each host on the network to auto-configure a unique IPv6 address without any device keeping track of which address is assigned to which node12. SLAAC uses link-local addresses and the interface’s MAC address or a random number to generate the host portion of the IPv6 address2. SLAAC also relies on Router Solicitation (RS) and Router Advertisement (RA) messages to obtain the network prefix and other information from a router12. Therefore, to change an entire subnet of SLAAC-configured workstation addresses, the network engineer needs to change the address prefix in a router and let the router
advertise the new prefix with an ND (Neighbor Discovery) message. This way, the workstations will receive the new prefix and update their IPv6 addresses accordingly3.
Reference
1 – IPv6 Stateless Address Auto-configuration (SLAAC) | NetworkAcademy.io
2 – IPv6 SLAAC C Stateless Address Autoconfiguration – Study-CCNA
3 – Mastering IPv6 SLAAC Concepts and Configuration – Cisco Press
An engineer is using a tool to run an ICMP sweep of a network to find devices that are online. When reviewing the results, the engineer notices a number of workstations that are currently verified as being online are not listed in the report.
The tool was configured to scan using the following information:
Network address: 172.28.16.0
CIDR: /22
The engineer collected the following information from the client workstation:
IP address: 172.28.17.206
Subnet mask: 255.255.252.0
Which of the following MOST likely explains why the tool is failing to detect some workstations?
- A . The scanned network range is incorrect.
- B . The subnet mask on the client is misconfigured.
- C . The workstation has a firewall enabled.
- D . The tool is unable to scan remote networks.
C
Explanation:
A firewall is a device or software that filters and controls the incoming and outgoing network traffic based on predefined rules. A firewall can block ICMP packets, which are used for ping and other diagnostic tools. If the workstation has a firewall enabled, it may not respond to the ICMP sweep and appear as offline. The engineer should check the firewall settings on the workstation and allow ICMP traffic if needed.
Reference: Network+ Study Guide Objective 4.1: Given a scenario, use the appropriate tool.
An IT administrator is creating an alias to the primary customer’s domain.
Which of the following DNS record types does this represent?
- A . CNAME
- B . MX
- C . A
- D . PTR
A
Explanation:
A CNAME record is a type of DNS record that maps an alias name to a canonical name, or the primary domain name. A CNAME record is used to create subdomains or alternative names for the same website, without having to specify the IP address for each alias.
For example, a CNAME record can map www.example.com to example.com, or mail.example.com to example.com.
Reference: CompTIA Network+ N10-008 Cert Guide, Chapter 2, Section 2.4
A network technician 13 troubleshooting a specific port on a switch.
Which of the following commands should the technician use to see the port configuration?
- A . show route
- B . show Interface
- C . show arp
- D . show port
B
Explanation:
To see the configuration of a specific port on a switch, the network technician should use the "show interface" command. This command provides detailed information about the interface, including the current configuration, status, and statistics for the interface.
Which of the following describes the differences between switches and hubs?
- A . Switches operate on the physical layer, while hubs operate on the data link layer.
- B . Switches operate on the session layer, while hubs operate on the transport layer.
- C . Switches operate on the data link layer, while hubs operate on the physial layer.
- D . Switches operate on the transport layer, while hubs operate on the data link layer.
C
Explanation:
Switches operate at the data link layer (Layer 2) of the OSI model and make decisions based on MAC addresses. Hubs, on the other hand, operate at the physical layer (Layer 1) and simply repeat the signals they receive to all connected devices without any filtering or decision-making.
Reference: Networking Devices C N10-008 CompTIA Network+: 2.1
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
Explanation:
A cable tester is a tool that can verify the integrity and functionality of a network cable. It can measure the electrical characteristics of the cable, such as resistance, capacitance, and impedance, and detect any faults or defects, such as shorts, opens, or crosstalk. A cable tester can help the network administrator troubleshoot the problem by determining if the cable is faulty or not. A tone generator is a tool that can send an audible signal through a cable to help locate and identify it. A multimeter is a tool that can measure voltage, current, and resistance of electrical circuits. An optical time-domain reflectometer (OTDR) is a tool that can test the quality and length of fiber optic cables.
Reference: CompTIA Network+ Certification Exam Objectives Version 7.0 (N10-007), Objective 2.3: Given a scenario, use the appropriate tool to support wired or wireless networks.
Which of the following is a cost-effective advantage of a split-tunnel VPN?
- A . Web traffic is filtered through a web filter.
- B . More bandwidth is required on the company’s internet connection.
- C . Monitoring detects insecure machines on the company’s network.
- D . Cloud-based traffic flows outside of the company’s network.
D
Explanation:
A split-tunnel VPN is a configuration where only specific traffic is routed through a VPN, while the remaining data is sent directly over the internet. This can reduce the bandwidth consumption and cost of the company’s internet connection, as cloud-based traffic does not need to pass through the VPN tunnel. A web filter, monitoring, and security are not advantages of a split-tunnel VPN, as they may require all traffic to go through the VPN.
https://www.auvik.com/franklyit/blog/vpn-split-tunneling/
Which of the following is a cost-effective advantage of a split-tunnel VPN?
- A . Web traffic is filtered through a web filter.
- B . More bandwidth is required on the company’s internet connection.
- C . Monitoring detects insecure machines on the company’s network.
- D . Cloud-based traffic flows outside of the company’s network.
D
Explanation:
A split-tunnel VPN is a configuration where only specific traffic is routed through a VPN, while the remaining data is sent directly over the internet. This can reduce the bandwidth consumption and cost of the company’s internet connection, as cloud-based traffic does not need to pass through the VPN tunnel. A web filter, monitoring, and security are not advantages of a split-tunnel VPN, as they may require all traffic to go through the VPN.
https://www.auvik.com/franklyit/blog/vpn-split-tunneling/
A user took a laptop on a trip and made changes to the network parameters while at the airport. The user can access all internet websites but not corporate intranet websites.
Which of the following is the most likely cause of the issue?
- A . Duplicate IP address
- B . Duplicate SSID
- C . Incorrect DNS
- D . Incorrect subnet mask
C
Explanation:
DNS (Domain Name System) is a service that translates domain names into IP addresses. Corporate intranet websites are usually hosted on private IP addresses that are not accessible from the public internet. Therefore, the user’s laptop needs to use the correct DNS server that can resolve the intranet domain names to the private IP addresses. If the user changed the network parameters at the airport and did not revert them back, the laptop might be using a public DNS server that does not have the records for the intranet websites. This would cause the user to access all internet websites but not corporate intranet websites.
Reference: An Overview of DNS – N10-008 CompTIA Network+: 1.61 DNS Configuration C CompTIA A+ 220-11012 CompTIA Network+ Certification Exam Objectives, page 53