Practice Free N10-009 Exam Online Questions
Question #151
A network engineer is designing an internal network that needs to support both IPv4 and IPv6 routing.
Which of the following routing protocols is capable of supporting both IPv4 and IPv6?
- A . OSPFv3
- B . RIPv2
- C . BGP
- D . EIGRP
Correct Answer: D
D
Explanation:
EIGRP (Enhanced Interior Gateway Routing Protocol) supports bothIPv4 and IPv6. While OSPFv3 is specific to IPv6 and RIPv2 only supports IPv4, EIGRP was extended to handle dual-stack environments efficiently.
Reference: Section 2.1 C Characteristics of Routing Technologies C “EIGRP”
D
Explanation:
EIGRP (Enhanced Interior Gateway Routing Protocol) supports bothIPv4 and IPv6. While OSPFv3 is specific to IPv6 and RIPv2 only supports IPv4, EIGRP was extended to handle dual-stack environments efficiently.
Reference: Section 2.1 C Characteristics of Routing Technologies C “EIGRP”
Question #152
A small business is deploying new phones, and some of the phones have full HD videoconferencing features. The Chief Information Officer (CIO) is concerned that the network might not be able to handle the traffic if it reaches a certain threshold.
Which of the following can the network engineer
configure to help ease these concerns?
- A . A VLAN with 100Mbps speed limits
- B . An IP helper to direct VoIP traffic
- C . A smaller subnet mask
- D . Full duplex on all user ports
Correct Answer: D
D
Explanation:
Full duplex mode allows devices to send and receive data simultaneously, improving network performance and reducing congestion, which is critical for VoIP and video conferencing.
Breakdown of Options:
D
Explanation:
Full duplex mode allows devices to send and receive data simultaneously, improving network performance and reducing congestion, which is critical for VoIP and video conferencing.
Breakdown of Options:
Question #153
A help desk technician receives a report that users cannot access internet URLs. The technician performs ping tests and finds that sites fail when a URL is used but succeed when an IP is used.
Which of the following tools should the technician utilize next?
- A . tcpdump
- B . tracert
- C . nmap
- D . dig
Correct Answer: D
D
Explanation:
The issue is clearly related to DNS resolution, as IP-based connections succeed but domain name-based ones fail.
D. dig (Domain Information Groper) is a DNS lookup tool used to troubleshoot DNS problems by querying name servers directly.
Other tools are less relevant here:
D
Explanation:
The issue is clearly related to DNS resolution, as IP-based connections succeed but domain name-based ones fail.
D. dig (Domain Information Groper) is a DNS lookup tool used to troubleshoot DNS problems by querying name servers directly.
Other tools are less relevant here:
Question #154
Which of the following protocols is used to send networking status messages between clients and servers?
- A . SSH
- B . DHCP
- C . NTP
- D . SNMP
Correct Answer: D
D
Explanation:
The correct answer is SNMP (Simple Network Management Protocol) because it is specifically designed to collect and transmit network management and status information between managed devices and management systems. According to CompTIA Network+ (N10-009) objectives, SNMP is used for monitoring and managing network devices such as routers, switches, servers, and printers.
SNMP operates using a manager-agent model. The SNMP manager (such as a network monitoring server) communicates with SNMP agents installed on network devices. Agents send traps and inform messages, which are unsolicited status alerts indicating events such as device failures, high CPU usage, or link outages. The manager can also poll agents to retrieve performance metrics and configuration details stored in the Management Information Base (MIB).
SSH (Option A) is used for secure remote administration. DHCP (Option B) dynamically assigns IP addresses. NTP (Option C) synchronizes time between devices. None of these protocols are designed for network status monitoring and alert messaging.
Therefore, SNMP is the correct protocol for sending networking status messages between devices and management systems.
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D
Explanation:
The correct answer is SNMP (Simple Network Management Protocol) because it is specifically designed to collect and transmit network management and status information between managed devices and management systems. According to CompTIA Network+ (N10-009) objectives, SNMP is used for monitoring and managing network devices such as routers, switches, servers, and printers.
SNMP operates using a manager-agent model. The SNMP manager (such as a network monitoring server) communicates with SNMP agents installed on network devices. Agents send traps and inform messages, which are unsolicited status alerts indicating events such as device failures, high CPU usage, or link outages. The manager can also poll agents to retrieve performance metrics and configuration details stored in the Management Information Base (MIB).
SSH (Option A) is used for secure remote administration. DHCP (Option B) dynamically assigns IP addresses. NTP (Option C) synchronizes time between devices. None of these protocols are designed for network status monitoring and alert messaging.
Therefore, SNMP is the correct protocol for sending networking status messages between devices and management systems.
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Question #155
A few employees report issues with sessions disconnecting frequently, buffering repeatedly, and performing poorly.
Given the following information:
• Employees are in a multitenant office building.
• The Wi-Fi uses 2.4GHz.
• Wireless signals from users range between -50 to -65dBm.
• WPA2 is used.
Which of the following is the most likely cause of the issues?
- A . Channel overlap
- B . Insufficient wireless coverage
- C . AP antenna type
- D . Outdated encryption usage
Correct Answer: A
A
Explanation:
The correct answer is A. Channel overlap. The signal strength numbers given, -50 to -65 dBm, are generally strong enough for normal client connectivity, so this does not point to weak coverage. The bigger clue is that the environment is a multitenant office building and the wireless network is using 2.4 GHz. That band is well known for congestion and overlapping channels, especially where many nearby businesses or tenants have their own access points.
In the 2.4 GHz range, there are only a few non-overlapping channels commonly used. When many APs operate close together on overlapping channels, clients can experience interference, retransmissions, poor throughput, buffering, and connection instability. Those symptoms fit the scenario very well.
The other options are less convincing. Insufficient wireless coverage does not line up with the reported signal levels. AP antenna type could matter in some designs, but there is nothing in the question pointing to a directional or placement issue. WPA2 is not the cause of the performance symptoms here; while it is older than WPA3, it does not normally create repeated buffering and disconnections in this way.
This is really a wireless interference question, and in a crowded 2.4 GHz building, channel overlap is the most likely reason.
A
Explanation:
The correct answer is A. Channel overlap. The signal strength numbers given, -50 to -65 dBm, are generally strong enough for normal client connectivity, so this does not point to weak coverage. The bigger clue is that the environment is a multitenant office building and the wireless network is using 2.4 GHz. That band is well known for congestion and overlapping channels, especially where many nearby businesses or tenants have their own access points.
In the 2.4 GHz range, there are only a few non-overlapping channels commonly used. When many APs operate close together on overlapping channels, clients can experience interference, retransmissions, poor throughput, buffering, and connection instability. Those symptoms fit the scenario very well.
The other options are less convincing. Insufficient wireless coverage does not line up with the reported signal levels. AP antenna type could matter in some designs, but there is nothing in the question pointing to a directional or placement issue. WPA2 is not the cause of the performance symptoms here; while it is older than WPA3, it does not normally create repeated buffering and disconnections in this way.
This is really a wireless interference question, and in a crowded 2.4 GHz building, channel overlap is the most likely reason.
Question #156
Which of the following is an XML-based security concept that works by passing sensitive information about users, such as login information and attributes, to providers?
- A . IAM
- B . MFA
- C . RADIUS
- D . SAML
Correct Answer: D
D
Explanation:
The correct answer is SAML (Security Assertion Markup Language). SAML is an XML-based standard used for single sign-on (SSO) and identity federation. It allows identity providers (IdPs) to share authentication and authorization data with service providers (SPs), passing secure tokens containing user attributes and credentials.
D
Explanation:
The correct answer is SAML (Security Assertion Markup Language). SAML is an XML-based standard used for single sign-on (SSO) and identity federation. It allows identity providers (IdPs) to share authentication and authorization data with service providers (SPs), passing secure tokens containing user attributes and credentials.
Question #157
A company wants to implement a disaster recovery site or non-critical appliance, which can tolerance a short period of downtime.
Which of the following type of sites should the company impalement to achieve this goal?
- A . Hot
- B . Cold
- C . Warm
- D . Passive
Correct Answer: C
C
Explanation:
A warm site is a compromise between a hot site and a cold site, providing a balance between cost and recovery time. It is partially equipped with the necessary hardware, software, and infrastructure, allowing for a quicker recovery compared to a cold site but at a lower cost than a hot site.
Recovery Time: Warm sites can be operational within hours to a day, making them suitable for non-critical applications that can tolerate short downtimes.
Cost-Effectiveness: Warm sites are more economical than hot sites as they do not require all systems to be fully operational at all times.
Network
Reference: CompTIA Network+ N10-007 Official Certification Guide: Discusses disaster recovery strategies and the different types of recovery sites.
Cisco Networking Academy: Provides training on disaster recovery planning and site selection.
Network+ Certification All-in-One Exam Guide: Explains the characteristics of hot, warm, and cold sites and their use cases in disaster recovery planning.
Warm sites offer a practical solution for maintaining business continuity for non-critical applications, balancing the need for availability with cost considerations.
C
Explanation:
A warm site is a compromise between a hot site and a cold site, providing a balance between cost and recovery time. It is partially equipped with the necessary hardware, software, and infrastructure, allowing for a quicker recovery compared to a cold site but at a lower cost than a hot site.
Recovery Time: Warm sites can be operational within hours to a day, making them suitable for non-critical applications that can tolerate short downtimes.
Cost-Effectiveness: Warm sites are more economical than hot sites as they do not require all systems to be fully operational at all times.
Network
Reference: CompTIA Network+ N10-007 Official Certification Guide: Discusses disaster recovery strategies and the different types of recovery sites.
Cisco Networking Academy: Provides training on disaster recovery planning and site selection.
Network+ Certification All-in-One Exam Guide: Explains the characteristics of hot, warm, and cold sites and their use cases in disaster recovery planning.
Warm sites offer a practical solution for maintaining business continuity for non-critical applications, balancing the need for availability with cost considerations.
Question #158
A network administrator is unable to ping a remote server from a newly connected workstation that has been added to the network. Ping to 127.0.0.1 on the workstation is failing.
Which of the following should the administrator perform to diagnose the problem?
- A . Verify the NIC interface status.
- B . Verify the network is not congested.
- C . Verify the router is not dropping packets.
- D . Verify that DNS is resolving correctly.
Correct Answer: A
A
Explanation:
The failure of a ping to 127.0.0.1 (the loopback address) indicates a problem with the workstation’s TCP/IP stack or network interface card (NIC). Since 127.0.0.1 is a local address, the issue is not related to the network, router, or DNS. The first step in diagnosing this issue is to verify the NIC interface status to ensure the network adapter is functioning and properly configured.
Why not Verify the network is not congested? Network congestion affects external connectivity, not the loopback address.
Why not Verify the router is not dropping packets? Router issues are irrelevant since the loopback ping fails locally.
Why not Verify that DNS is resolving correctly? DNS resolution is not involved in pinging 127.0.0.1, which uses a direct IP address.
Reference: CompTIA Network+ N10-009 Objective 5.2: Explain the troubleshooting methodology. The CompTIA Network+ Study Guide (e.g., Chapter 13: Network Troubleshooting) emphasizes that a failed loopback ping indicates a local TCP/IP stack or NIC issue, and checking the NIC status is the first diagnostic step.
A
Explanation:
The failure of a ping to 127.0.0.1 (the loopback address) indicates a problem with the workstation’s TCP/IP stack or network interface card (NIC). Since 127.0.0.1 is a local address, the issue is not related to the network, router, or DNS. The first step in diagnosing this issue is to verify the NIC interface status to ensure the network adapter is functioning and properly configured.
Why not Verify the network is not congested? Network congestion affects external connectivity, not the loopback address.
Why not Verify the router is not dropping packets? Router issues are irrelevant since the loopback ping fails locally.
Why not Verify that DNS is resolving correctly? DNS resolution is not involved in pinging 127.0.0.1, which uses a direct IP address.
Reference: CompTIA Network+ N10-009 Objective 5.2: Explain the troubleshooting methodology. The CompTIA Network+ Study Guide (e.g., Chapter 13: Network Troubleshooting) emphasizes that a failed loopback ping indicates a local TCP/IP stack or NIC issue, and checking the NIC status is the first diagnostic step.
Question #159
Which of the following appliances provides users with an extended footprint that allows connections from multiple devices within a designated WLAN?
- A . Router
- B . Switch
- C . Access point
- D . Firewall
Correct Answer: C
C
Explanation:
An access point (AP) provides users with an extended footprint that allows connections from multiple devices within a designated Wireless Local Area Network (WLAN).
Router: Typically used to connect different networks, not specifically for extending wireless coverage.
Switch: Used to connect devices within a wired network, not for providing wireless access.
Access Point (AP): Extends wireless network coverage, allowing multiple wireless devices to connect to the network.
Firewall: Primarily used for network security, controlling incoming and outgoing traffic based on security rules, not for providing wireless connectivity.
Network
Reference: CompTIA Network+ N10-007 Official Certification Guide: Explains the roles and functions of network appliances, including access points.
Cisco Networking Academy: Provides training on deploying and managing wireless networks with access points.
Network+ Certification All-in-One Exam Guide: Covers network devices and their roles in creating and managing networks.
C
Explanation:
An access point (AP) provides users with an extended footprint that allows connections from multiple devices within a designated Wireless Local Area Network (WLAN).
Router: Typically used to connect different networks, not specifically for extending wireless coverage.
Switch: Used to connect devices within a wired network, not for providing wireless access.
Access Point (AP): Extends wireless network coverage, allowing multiple wireless devices to connect to the network.
Firewall: Primarily used for network security, controlling incoming and outgoing traffic based on security rules, not for providing wireless connectivity.
Network
Reference: CompTIA Network+ N10-007 Official Certification Guide: Explains the roles and functions of network appliances, including access points.
Cisco Networking Academy: Provides training on deploying and managing wireless networks with access points.
Network+ Certification All-in-One Exam Guide: Covers network devices and their roles in creating and managing networks.
Question #160
Which of the following is the best way to reduce the likelihood of electrostatic discharge?
- A . Uninterruptible power supply
- B . Surge protector
- C . Power distribution units
- D . Temperature and humidity control
Correct Answer: D
D
Explanation:
Temperature and humidity control is the best way to reduce the risk of electrostatic discharge (ESD). Dry environments significantly increase the likelihood of static buildup, which can discharge and damage sensitive components. By controlling humidity, the environment becomes less prone to static electricity.
Reference: Section 2.4 C Important Factors of Physical Installations C “Environmental Considerations”
D
Explanation:
Temperature and humidity control is the best way to reduce the risk of electrostatic discharge (ESD). Dry environments significantly increase the likelihood of static buildup, which can discharge and damage sensitive components. By controlling humidity, the environment becomes less prone to static electricity.
Reference: Section 2.4 C Important Factors of Physical Installations C “Environmental Considerations”