Practice Free N10-008 Exam Online Questions
Question #60
Which of the following technologies allows traffic to be sent through two different ISPs to increase performance?
- A . Fault tolerance
- B . Quality of service
- C . Load balancing
- D . Port aggregation
Correct Answer: C
C
Explanation:
Load balancing is a technology that allows traffic to be sent through two different ISPs to increase performance. Load balancing is a process of distributing network traffic across multiple servers or links to optimize resource utilization, throughput, latency, and reliability. Load balancing can be implemented at different layers of the OSI model, such as layer 4 (transport) or layer 7 (application). Load balancing can also be used for outbound traffic by using multiple ISPs and routing protocols such as BGP (Border Gateway Protocol) to select the best path for each packet.
Reference: https://www.cisco.com/c/en/us/products/collateral/ios-nx-os-software/border-gateway-protocol-bgp/prod_white_paper0900aecd806c4eeb.html
C
Explanation:
Load balancing is a technology that allows traffic to be sent through two different ISPs to increase performance. Load balancing is a process of distributing network traffic across multiple servers or links to optimize resource utilization, throughput, latency, and reliability. Load balancing can be implemented at different layers of the OSI model, such as layer 4 (transport) or layer 7 (application). Load balancing can also be used for outbound traffic by using multiple ISPs and routing protocols such as BGP (Border Gateway Protocol) to select the best path for each packet.
Reference: https://www.cisco.com/c/en/us/products/collateral/ios-nx-os-software/border-gateway-protocol-bgp/prod_white_paper0900aecd806c4eeb.html
Question #62
Several WIFI users are reporting the inability to connect to the network. WLAN users on the guest network are able to access all network resources without any performance issues.
The following table summarizes the findings after a site survey of the area in question:
Which of the following should a wireless technician do NEXT to troubleshoot this issue?
- A . Reconfigure the channels to reduce overlap
- B . Replace the omni antennas with directional antennas
- C . Update the SSIDs on all the APs
- D . Decrease power in AP 3 and AP 4
Correct Answer: A
A
Explanation:
The issue of WIFI users being unable to connect while WLAN users on the guest network can access all resources indicates a problem with channel overlap or interference. By reconfiguring the channels, interference can be minimized, improving connectivity for WIFI users. According to the table, AP 1 and AP 2 are using adjacent channels (2 and 1), which can cause interference. AP 3 and AP 4 are using non-overlapping channels (5 and 11), but they have very high RSSI values (-44dBm and -41dBm), which can also cause interference. A possible solution is to use only non-overlapping channels (such as 1, 6, and 11) and adjust the power levels to avoid excessive signal strength.
Reference: Wireless Troubleshooting C N10-008 CompTIA Network+: 5.4, Network
Troubleshooting Methodology – N10-008 CompTIA Network+: 5.1
A
Explanation:
The issue of WIFI users being unable to connect while WLAN users on the guest network can access all resources indicates a problem with channel overlap or interference. By reconfiguring the channels, interference can be minimized, improving connectivity for WIFI users. According to the table, AP 1 and AP 2 are using adjacent channels (2 and 1), which can cause interference. AP 3 and AP 4 are using non-overlapping channels (5 and 11), but they have very high RSSI values (-44dBm and -41dBm), which can also cause interference. A possible solution is to use only non-overlapping channels (such as 1, 6, and 11) and adjust the power levels to avoid excessive signal strength.
Reference: Wireless Troubleshooting C N10-008 CompTIA Network+: 5.4, Network
Troubleshooting Methodology – N10-008 CompTIA Network+: 5.1
Question #63
Which of the following network topologies involves sending all traffic through a single point?
- A . Mesh
- B . Hybrid
- C . Hub-and-spoke
- D . Point-to-point
Correct Answer: C
C
Explanation:
Hub-and-spoke is a network topology where each node connects to a central switching device, such as a hub or a switch. All traffic between the nodes must pass through the central device, which acts as a single point of communication and control. Hub-and-spoke topology is simple, easy to manage, and cost-effective, but it also has drawbacks, such as low redundancy, high latency, and scalability issues.
Reference: Network Topologies C N10-008 CompTIA Network+: 1.21 CompTIA Network+ Certification Exam Objectives, page 92
C
Explanation:
Hub-and-spoke is a network topology where each node connects to a central switching device, such as a hub or a switch. All traffic between the nodes must pass through the central device, which acts as a single point of communication and control. Hub-and-spoke topology is simple, easy to manage, and cost-effective, but it also has drawbacks, such as low redundancy, high latency, and scalability issues.
Reference: Network Topologies C N10-008 CompTIA Network+: 1.21 CompTIA Network+ Certification Exam Objectives, page 92
Question #64
During a client audit, a network analyst is tasked with recommending changes to upgrade the client network and readiness.
Afield technician has submitted the following report:
Based on this report, which of the following metrics or sensors would be the BEST recommendation to the client?
- A . Electrical
- B . Humidity
- C . Flooding
- D . Temperature
Correct Answer: B
B
Explanation:
Humidity is the amount of water vapor in the air. High humidity can cause corrosion, condensation, and short circuits in electronic devices. Low humidity can cause static electricity and damage sensitive components. The optimal humidity range for a data center is between 40% and 60%. Based on the report, the humidity level in the server room is 70%, which is too high and can affect the performance and reliability of the network equipment. Therefore, the best recommendation to the client is to install a humidity sensor and a dehumidifier to control the humidity level in the server room.
Reference: Network+ Study Guide Objective 5.1: Summarize the importance of physical security controls.
B
Explanation:
Humidity is the amount of water vapor in the air. High humidity can cause corrosion, condensation, and short circuits in electronic devices. Low humidity can cause static electricity and damage sensitive components. The optimal humidity range for a data center is between 40% and 60%. Based on the report, the humidity level in the server room is 70%, which is too high and can affect the performance and reliability of the network equipment. Therefore, the best recommendation to the client is to install a humidity sensor and a dehumidifier to control the humidity level in the server room.
Reference: Network+ Study Guide Objective 5.1: Summarize the importance of physical security controls.
Question #65
A security engineer is trying to determine whether an internal server was accessed by hosts on the internet. The internal server was shut down during the investigation.
Which of the following will the engineer review to determine whether the internal server had an unauthorized access attempt?
- A . The server’s syslog
- B . The NetFlow statistics
- C . The firewall logs
- D . The audit logs on the core switch
Correct Answer: C
C
Explanation:
The firewall logs are the best source of information to determine whether an internal server was accessed by hosts on the internet, as they record all the traffic that passes through the firewall, including the source and destination IP addresses, ports, protocols, and actions taken by the firewall rules.
The server’s syslog is a file that records events and messages related to the server’s operation, such as system errors, warnings, or notifications. It may not contain information about the network traffic to and from the server, especially if the server was shut down during the investigation.
The NetFlow statistics are a network protocol that collects and analyzes data about the network traffic flows, such as the volume, type, and direction of the traffic. It can provide useful information about the network performance and utilization, but it may not show the details of the individual packets or the firewall actions.
The audit logs on the core switch are a record of the configuration changes and commands executed
on the switch, such as adding, deleting, or modifying VLANs, ports, or routing protocols. They can
help troubleshoot or verify the switch’s operation, but they may not show the network traffic to and
from the server.
Reference: CompTIA Network+ N10-008 Study Guide, Chapter 7: Network Security, Section 7.2: Network Security Devices and Technologies, p. 372-373
Professor Messer’s CompTIA N10-008 Network+ Course Notes, Section 5.1: Network Monitoring Tools, p. 51
Professor Messer’s CompTIA N10-008 Network+ Training Course, Video 5.1: Network Monitoring Tools, 12:28-14:02
C
Explanation:
The firewall logs are the best source of information to determine whether an internal server was accessed by hosts on the internet, as they record all the traffic that passes through the firewall, including the source and destination IP addresses, ports, protocols, and actions taken by the firewall rules.
The server’s syslog is a file that records events and messages related to the server’s operation, such as system errors, warnings, or notifications. It may not contain information about the network traffic to and from the server, especially if the server was shut down during the investigation.
The NetFlow statistics are a network protocol that collects and analyzes data about the network traffic flows, such as the volume, type, and direction of the traffic. It can provide useful information about the network performance and utilization, but it may not show the details of the individual packets or the firewall actions.
The audit logs on the core switch are a record of the configuration changes and commands executed
on the switch, such as adding, deleting, or modifying VLANs, ports, or routing protocols. They can
help troubleshoot or verify the switch’s operation, but they may not show the network traffic to and
from the server.
Reference: CompTIA Network+ N10-008 Study Guide, Chapter 7: Network Security, Section 7.2: Network Security Devices and Technologies, p. 372-373
Professor Messer’s CompTIA N10-008 Network+ Course Notes, Section 5.1: Network Monitoring Tools, p. 51
Professor Messer’s CompTIA N10-008 Network+ Training Course, Video 5.1: Network Monitoring Tools, 12:28-14:02
Question #66
A user stores large graphic files. The lime required to transfer the files to the server is excessive due to network congestion. The user’s budget does not allow for the current switches to be replaced.
Which of the following can be used to provide FASTER transfer times?
- A . Half duplex
- B . Jumbo frames
- C . LACP
- D . 802.1Q
Correct Answer: B
B
Explanation:
Jumbo frames are Ethernet frames that can carry more than 1500 bytes of payload data. Jumbo frames can reduce the overhead and improve the throughput of large file transfers, as fewer frames are needed to send the same amount of data. Jumbo frames can be used to provide faster transfer times, as long as the network devices support them
B
Explanation:
Jumbo frames are Ethernet frames that can carry more than 1500 bytes of payload data. Jumbo frames can reduce the overhead and improve the throughput of large file transfers, as fewer frames are needed to send the same amount of data. Jumbo frames can be used to provide faster transfer times, as long as the network devices support them
Question #67
Which of the following technologies would MOST likely De used to prevent the loss of connection between a virtual server and network storage devices?
- A . Multipathing
- B . VRRP
- C . Port aggregation
- D . NIC teaming
Correct Answer: D
D
Explanation:
NIC teaming is a technology that allows multiple network interface cards (NICs) to work together as a single logical interface, providing redundancy and load balancing. This can prevent the loss of connection between a virtual server and network storage devices if one of the NICs fails or becomes disconnected.
Reference: [CompTIA Network+ Certification Exam Objectives], Domain 2.0 Networking Concepts, Objective 2.5: Explain the purposes and use cases for advanced networking devices, Subobjective: NIC bonding/teaming
D
Explanation:
NIC teaming is a technology that allows multiple network interface cards (NICs) to work together as a single logical interface, providing redundancy and load balancing. This can prevent the loss of connection between a virtual server and network storage devices if one of the NICs fails or becomes disconnected.
Reference: [CompTIA Network+ Certification Exam Objectives], Domain 2.0 Networking Concepts, Objective 2.5: Explain the purposes and use cases for advanced networking devices, Subobjective: NIC bonding/teaming
Question #68
A network technician is troubleshooting a port channel issue.
When logging in to one of the switches, the technician sees the following information displayed:
Native VLAN mismatch detected on interface g0/1
Which of the following layers of the OSI model is most likely to be where the issue resides?
- A . Layer 2
- B . Layer 3
- C . Layer 5
- D . Layer 6
Correct Answer: A
A
Explanation:
Layer 2 of the OSI model is the data link layer, which is responsible for transferring data between adjacent nodes on a network. It uses protocols such as Ethernet, PPP, and HDLC to encapsulate data into frames and add MAC addresses for source and destination identification. It also uses protocols such as STP, LACP, and CDP to manage the physical links and prevent loops, aggregate bandwidth, and discover neighboring devices12
A native VLAN mismatch is a common Layer 2 issue that occurs when two switches are connected by a trunk port, but have different native VLANs configured on their interfaces. A native VLAN is the VLAN that is assigned to untagged frames on a trunk port. If the native VLANs do not match, the switches will drop the untagged frames and generate an error message. This can cause connectivity problems and security risks on the network345
To resolve a native VLAN mismatch, the network technician should ensure that both switches have the same native VLAN configured on their trunk ports, or use a different port mode such as access or general.
A
Explanation:
Layer 2 of the OSI model is the data link layer, which is responsible for transferring data between adjacent nodes on a network. It uses protocols such as Ethernet, PPP, and HDLC to encapsulate data into frames and add MAC addresses for source and destination identification. It also uses protocols such as STP, LACP, and CDP to manage the physical links and prevent loops, aggregate bandwidth, and discover neighboring devices12
A native VLAN mismatch is a common Layer 2 issue that occurs when two switches are connected by a trunk port, but have different native VLANs configured on their interfaces. A native VLAN is the VLAN that is assigned to untagged frames on a trunk port. If the native VLANs do not match, the switches will drop the untagged frames and generate an error message. This can cause connectivity problems and security risks on the network345
To resolve a native VLAN mismatch, the network technician should ensure that both switches have the same native VLAN configured on their trunk ports, or use a different port mode such as access or general.
Question #69
Which of the Mowing architectures reduces network latency by enforcing a limit on the number of switching devices on the frame’s path between any internal hosts?
- A . Spine and leaf
- B . Software-defined network
- C . Three-tiered
- D . Collapsed core
Correct Answer: A
A
Explanation:
It does this by using a two-level hierarchy of switches, where the spine switches connect to the leaf switches, which in turn connect to the end hosts. This reduces the number of hops a packet must take from one host to another, thus reducing latency. According to the CompTIA Network+ N10-008 Exam Guide, the Spine and Leaf topology is a modern architecture that is used to reduce latency in large networks.
A
Explanation:
It does this by using a two-level hierarchy of switches, where the spine switches connect to the leaf switches, which in turn connect to the end hosts. This reduces the number of hops a packet must take from one host to another, thus reducing latency. According to the CompTIA Network+ N10-008 Exam Guide, the Spine and Leaf topology is a modern architecture that is used to reduce latency in large networks.
Question #70
A network administrator wants to test the throughput of a new metro Ethernet circuit to verify that its performance matches the requirements specified m the SLA.
Which of the following would BEST help measure the throughput?
- A . iPerf
- B . Ping
- C . NetFlow
- D . Netstat
Correct Answer: A
A
Explanation:
Throughput is the measure of how much data can be transferred over a network in a given time period1.
To test the throughput of a network connection, a network administrator needs a tool that can generate and measure traffic between two endpoints2.
iPerf is a command-line tool that can create TCP or UDP streams and measure the bandwidth, delay, jitter, and packet loss of the network23.
iPerf can be used to test the performance of various network protocols, such as metro Ethernet, which is a type of Ethernet network that spans metropolitan areas and provides high-speed connectivity to businesses and organizations.
iPerf can also be used to verify that the network connection meets the service level agreement (SLA), which is a contract that defines the quality and availability of the network service provided by a vendor or a carrier.
Ping is a tool that can test the reachability and latency of a network device by sending and receiving ICMP echo packets. Ping cannot measure the throughput of a network connection, as it only tests the round-trip time of a single packet.
NetFlow is a protocol that can collect and analyze network traffic data, such as source and destination IP addresses, ports, protocols, and bytes transferred. NetFlow can provide information about the volume and type of network traffic, but it cannot measure the throughput of a specific network connection, as it does not generate or monitor traffic streams.
Netstat is a tool that can display information about the active and listening network connections, such as protocol, local and foreign address, and state. Netstat cannot measure the throughput of a network connection, as it only shows the status of the existing connections.
Reference:
1: CompTIA Network+ N10-008 Cert Guide, 1st Edition, Chapter 1: Introduction to Networks, p. 14
2: CompTIA Network+ N10-008 Cert Guide, 1st Edition, Chapter 16: Network Optimization, p. 649
3: iPerf – The ultimate speed test tool for TCP, UDP and SCTP
: CompTIA Network+ N10-008 Cert Guide, 1st Edition, Chapter 3: Ethernet Networks, p. 105
: CompTIA Network+ N10-008 Cert Guide, 1st Edition, Chapter 15: Network Monitoring, p. 611
: CompTIA Network+ N10-008 Cert Guide, 1st Edition, Chapter 4: IP Addressing, p. 143
: Ping (networking utility) – Wikipedia
: CompTIA Network+ N10-008 Cert Guide, 1st Edition, Chapter 15: Network Monitoring, p. 615
: NetFlow – Wikipedia
: CompTIA Network+ N10-008 Cert Guide, 1st Edition, Chapter 16: Network Optimization, p. 650
: [netstat – Wikipedia]
A
Explanation:
Throughput is the measure of how much data can be transferred over a network in a given time period1.
To test the throughput of a network connection, a network administrator needs a tool that can generate and measure traffic between two endpoints2.
iPerf is a command-line tool that can create TCP or UDP streams and measure the bandwidth, delay, jitter, and packet loss of the network23.
iPerf can be used to test the performance of various network protocols, such as metro Ethernet, which is a type of Ethernet network that spans metropolitan areas and provides high-speed connectivity to businesses and organizations.
iPerf can also be used to verify that the network connection meets the service level agreement (SLA), which is a contract that defines the quality and availability of the network service provided by a vendor or a carrier.
Ping is a tool that can test the reachability and latency of a network device by sending and receiving ICMP echo packets. Ping cannot measure the throughput of a network connection, as it only tests the round-trip time of a single packet.
NetFlow is a protocol that can collect and analyze network traffic data, such as source and destination IP addresses, ports, protocols, and bytes transferred. NetFlow can provide information about the volume and type of network traffic, but it cannot measure the throughput of a specific network connection, as it does not generate or monitor traffic streams.
Netstat is a tool that can display information about the active and listening network connections, such as protocol, local and foreign address, and state. Netstat cannot measure the throughput of a network connection, as it only shows the status of the existing connections.
Reference:
1: CompTIA Network+ N10-008 Cert Guide, 1st Edition, Chapter 1: Introduction to Networks, p. 14
2: CompTIA Network+ N10-008 Cert Guide, 1st Edition, Chapter 16: Network Optimization, p. 649
3: iPerf – The ultimate speed test tool for TCP, UDP and SCTP
: CompTIA Network+ N10-008 Cert Guide, 1st Edition, Chapter 3: Ethernet Networks, p. 105
: CompTIA Network+ N10-008 Cert Guide, 1st Edition, Chapter 15: Network Monitoring, p. 611
: CompTIA Network+ N10-008 Cert Guide, 1st Edition, Chapter 4: IP Addressing, p. 143
: Ping (networking utility) – Wikipedia
: CompTIA Network+ N10-008 Cert Guide, 1st Edition, Chapter 15: Network Monitoring, p. 615
: NetFlow – Wikipedia
: CompTIA Network+ N10-008 Cert Guide, 1st Edition, Chapter 16: Network Optimization, p. 650
: [netstat – Wikipedia]