Practice Free N10-009 Exam Online Questions
Question #81
A technician is deploying new networking hardware for company branch offices. The bridge priority must be properly set.
Which of the following should the technician configure?
- A . Spanning tree protocol
- B . Jumbo frames
- C . Perimeter network
- D . Port security
Correct Answer: A
A
Explanation:
Spanning Tree Protocol (STP) uses bridge priority values to determine the root bridge in a switched network topology. Correctly configuring bridge priority helps in maintaining a loop-free and efficient network.
The document explains:
“Spanning Tree Protocol (STP) uses bridge priority values to determine which switch will be the root bridge, ensuring loop prevention and efficient path selection within the network.”
A
Explanation:
Spanning Tree Protocol (STP) uses bridge priority values to determine the root bridge in a switched network topology. Correctly configuring bridge priority helps in maintaining a loop-free and efficient network.
The document explains:
“Spanning Tree Protocol (STP) uses bridge priority values to determine which switch will be the root bridge, ensuring loop prevention and efficient path selection within the network.”
Question #81
A technician is deploying new networking hardware for company branch offices. The bridge priority must be properly set.
Which of the following should the technician configure?
- A . Spanning tree protocol
- B . Jumbo frames
- C . Perimeter network
- D . Port security
Correct Answer: A
A
Explanation:
Spanning Tree Protocol (STP) uses bridge priority values to determine the root bridge in a switched network topology. Correctly configuring bridge priority helps in maintaining a loop-free and efficient network.
The document explains:
“Spanning Tree Protocol (STP) uses bridge priority values to determine which switch will be the root bridge, ensuring loop prevention and efficient path selection within the network.”
A
Explanation:
Spanning Tree Protocol (STP) uses bridge priority values to determine the root bridge in a switched network topology. Correctly configuring bridge priority helps in maintaining a loop-free and efficient network.
The document explains:
“Spanning Tree Protocol (STP) uses bridge priority values to determine which switch will be the root bridge, ensuring loop prevention and efficient path selection within the network.”
Question #83
Which of the following typically uses compromised systems that become part of a bot network?
- A . Evil twin attack
- B . DDoS attack
- C . XML injection
- D . Brute-force password attack
Correct Answer: B
B
Explanation:
A DDoS (Distributed Denial of Service) attack is often launched from botnets ― networks of compromised systems (bots or zombies) under the control of an attacker. These devices flood the target with traffic to disrupt services.
B
Explanation:
A DDoS (Distributed Denial of Service) attack is often launched from botnets ― networks of compromised systems (bots or zombies) under the control of an attacker. These devices flood the target with traffic to disrupt services.
Question #84
A storage network requires reduced overhead and increased efficiency for the amout of data being sent.
Which of the following should an engineer likely configure to meet these requirements>?
- A . Link speed
- B . Jumbo frames
- C . QoS
- D . 802.1q tagging
Correct Answer: B
B
Explanation:
Jumbo frames are Ethernet frames with a payload greater than the standard maximum transmission unit (MTU) of 1500 bytes. Configuring jumbo frames can reduce overhead and increase efficiency in storage networks by allowing more data to be sent in each frame, thus reducing the number of frames needed to transmit the same amount of data.
Reduced Overhead: By sending larger frames, the relative overhead for headers and acknowledgments is reduced.
Increased Efficiency: Larger frames mean fewer packets to process, leading to better utilization of network bandwidth and improved performance in high-throughput environments like storage networks.
Configuration: Requires support from all devices in the network path, including switches and network interface cards (NICs).
Network
Reference: CompTIA Network+ N10-007 Official Certification Guide: Explains jumbo frames and their benefits in reducing network overhead.
Cisco Networking Academy: Provides training on network optimization techniques, including the use of jumbo frames.
Network+ Certification All-in-One Exam Guide: Covers advanced Ethernet features, including jumbo frames and their configuration for improved network performance.
B
Explanation:
Jumbo frames are Ethernet frames with a payload greater than the standard maximum transmission unit (MTU) of 1500 bytes. Configuring jumbo frames can reduce overhead and increase efficiency in storage networks by allowing more data to be sent in each frame, thus reducing the number of frames needed to transmit the same amount of data.
Reduced Overhead: By sending larger frames, the relative overhead for headers and acknowledgments is reduced.
Increased Efficiency: Larger frames mean fewer packets to process, leading to better utilization of network bandwidth and improved performance in high-throughput environments like storage networks.
Configuration: Requires support from all devices in the network path, including switches and network interface cards (NICs).
Network
Reference: CompTIA Network+ N10-007 Official Certification Guide: Explains jumbo frames and their benefits in reducing network overhead.
Cisco Networking Academy: Provides training on network optimization techniques, including the use of jumbo frames.
Network+ Certification All-in-One Exam Guide: Covers advanced Ethernet features, including jumbo frames and their configuration for improved network performance.
Question #84
A storage network requires reduced overhead and increased efficiency for the amout of data being sent.
Which of the following should an engineer likely configure to meet these requirements>?
- A . Link speed
- B . Jumbo frames
- C . QoS
- D . 802.1q tagging
Correct Answer: B
B
Explanation:
Jumbo frames are Ethernet frames with a payload greater than the standard maximum transmission unit (MTU) of 1500 bytes. Configuring jumbo frames can reduce overhead and increase efficiency in storage networks by allowing more data to be sent in each frame, thus reducing the number of frames needed to transmit the same amount of data.
Reduced Overhead: By sending larger frames, the relative overhead for headers and acknowledgments is reduced.
Increased Efficiency: Larger frames mean fewer packets to process, leading to better utilization of network bandwidth and improved performance in high-throughput environments like storage networks.
Configuration: Requires support from all devices in the network path, including switches and network interface cards (NICs).
Network
Reference: CompTIA Network+ N10-007 Official Certification Guide: Explains jumbo frames and their benefits in reducing network overhead.
Cisco Networking Academy: Provides training on network optimization techniques, including the use of jumbo frames.
Network+ Certification All-in-One Exam Guide: Covers advanced Ethernet features, including jumbo frames and their configuration for improved network performance.
B
Explanation:
Jumbo frames are Ethernet frames with a payload greater than the standard maximum transmission unit (MTU) of 1500 bytes. Configuring jumbo frames can reduce overhead and increase efficiency in storage networks by allowing more data to be sent in each frame, thus reducing the number of frames needed to transmit the same amount of data.
Reduced Overhead: By sending larger frames, the relative overhead for headers and acknowledgments is reduced.
Increased Efficiency: Larger frames mean fewer packets to process, leading to better utilization of network bandwidth and improved performance in high-throughput environments like storage networks.
Configuration: Requires support from all devices in the network path, including switches and network interface cards (NICs).
Network
Reference: CompTIA Network+ N10-007 Official Certification Guide: Explains jumbo frames and their benefits in reducing network overhead.
Cisco Networking Academy: Provides training on network optimization techniques, including the use of jumbo frames.
Network+ Certification All-in-One Exam Guide: Covers advanced Ethernet features, including jumbo frames and their configuration for improved network performance.
Question #86
A network administrator wants to implement security zones in the corporate network to control access to only individuals inside of the corporation.
Which of the following security zones is the best solution?
- A . Extranet
- B . Trusted
- C . VPN
- D . Public
Correct Answer: B
B
Explanation:
Introduction to Security Zones:
Security zones are logical segments within a network designed to enforce security policies and control access. They help in segregating and securing different parts of the network.
Types of Security Zones:
Trusted Zone: This is the most secure zone, typically used for internal corporate networks where only trusted users have access.
Extranet: This zone allows controlled access to external partners, vendors, or customers.
VPN (Virtual Private Network): While VPNs are used to create secure connections over the internet, they are not a security zone themselves.
Public Zone: This zone is the least secure and is typically used for public-facing services accessible by anyone.
Trusted Zone Implementation:
The trusted zone is configured to include internal corporate users and resources. Access controls, firewalls, and other security measures ensure that only authorized personnel can access this zone.
Internal network segments, such as the finance department, HR, and other critical functions, are usually placed in the trusted zone.
Example Configuration:
Firewall Rules: Set up rules to allow traffic only from internal IP addresses.
Access Control Lists (ACLs): Implement ACLs on routers and switches to restrict access based on IP addresses and other criteria.
Segmentation: Use VLANs and subnetting to segment and isolate the trusted zone from other zones.
Explanation of the Options:
B
Explanation:
Introduction to Security Zones:
Security zones are logical segments within a network designed to enforce security policies and control access. They help in segregating and securing different parts of the network.
Types of Security Zones:
Trusted Zone: This is the most secure zone, typically used for internal corporate networks where only trusted users have access.
Extranet: This zone allows controlled access to external partners, vendors, or customers.
VPN (Virtual Private Network): While VPNs are used to create secure connections over the internet, they are not a security zone themselves.
Public Zone: This zone is the least secure and is typically used for public-facing services accessible by anyone.
Trusted Zone Implementation:
The trusted zone is configured to include internal corporate users and resources. Access controls, firewalls, and other security measures ensure that only authorized personnel can access this zone.
Internal network segments, such as the finance department, HR, and other critical functions, are usually placed in the trusted zone.
Example Configuration:
Firewall Rules: Set up rules to allow traffic only from internal IP addresses.
Access Control Lists (ACLs): Implement ACLs on routers and switches to restrict access based on IP addresses and other criteria.
Segmentation: Use VLANs and subnetting to segment and isolate the trusted zone from other zones.
Explanation of the Options:
Question #87
An organization requires the ability to send encrypted email messages to a partner from an email server that is hosted on premises. The organization prefers to use the standard default ports when creating firewall rules.
Which of the following ports should be open to satisfy the requirements?
- A . 110
- B . 143
- C . 587
- D . 636
Correct Answer: C
C
Explanation:
Port 587 is the standard default port for sending email (SMTP) with TLS encryption, which is used to secure email transmissions between mail servers or between clients and mail servers. Allowing traffic over port 587 enables secure email sending while maintaining standard protocol usage. (Reference: CompTIA Network+ Study Guide, Chapter on Ports and Protocols)
C
Explanation:
Port 587 is the standard default port for sending email (SMTP) with TLS encryption, which is used to secure email transmissions between mail servers or between clients and mail servers. Allowing traffic over port 587 enables secure email sending while maintaining standard protocol usage. (Reference: CompTIA Network+ Study Guide, Chapter on Ports and Protocols)
Question #88
Which of the following is the next step to take after successfully testing a root cause theory?
- A . Determine resolution steps.
- B . Duplicate the problem in a lab.
- C . Present the theory for approval.
- D . Implement the solution to the problem.
Correct Answer: A
A
Explanation:
Troubleshooting Methodology:
Confirming the Root Cause: After testing and confirming the theory, the next logical step is to address the issue by implementing a solution.
Implementation of the Solution:
Resolve the Issue: Implement the identified solution to rectify the problem. This step involves making necessary changes to the network configuration, replacing faulty hardware, or applying software patches.
Documentation: Document the solution and the steps taken to resolve the issue to provide a reference for future troubleshooting.
Comparison with Other Steps:
Determine Resolution Steps: This is part of the implementation process where specific actions are outlined, but the actual next step after testing is to implement those steps.
Duplicate the Problem in a Lab: This step is typically done earlier in the troubleshooting process to understand the problem, not after confirming the root cause.
Present the Theory for Approval: In some scenarios, presenting the theory might be necessary for major changes, but generally, once the root cause is confirmed, the solution should be implemented.
Final Verification:
After implementing the solution, it is important to verify that the issue is resolved and that normal operations are restored. This may involve monitoring the network and testing to ensure no further issues arise.
Reference: CompTIA Network+ study materials on troubleshooting methodologies and best practices.
A
Explanation:
Troubleshooting Methodology:
Confirming the Root Cause: After testing and confirming the theory, the next logical step is to address the issue by implementing a solution.
Implementation of the Solution:
Resolve the Issue: Implement the identified solution to rectify the problem. This step involves making necessary changes to the network configuration, replacing faulty hardware, or applying software patches.
Documentation: Document the solution and the steps taken to resolve the issue to provide a reference for future troubleshooting.
Comparison with Other Steps:
Determine Resolution Steps: This is part of the implementation process where specific actions are outlined, but the actual next step after testing is to implement those steps.
Duplicate the Problem in a Lab: This step is typically done earlier in the troubleshooting process to understand the problem, not after confirming the root cause.
Present the Theory for Approval: In some scenarios, presenting the theory might be necessary for major changes, but generally, once the root cause is confirmed, the solution should be implemented.
Final Verification:
After implementing the solution, it is important to verify that the issue is resolved and that normal operations are restored. This may involve monitoring the network and testing to ensure no further issues arise.
Reference: CompTIA Network+ study materials on troubleshooting methodologies and best practices.
Question #88
Which of the following is the next step to take after successfully testing a root cause theory?
- A . Determine resolution steps.
- B . Duplicate the problem in a lab.
- C . Present the theory for approval.
- D . Implement the solution to the problem.
Correct Answer: A
A
Explanation:
Troubleshooting Methodology:
Confirming the Root Cause: After testing and confirming the theory, the next logical step is to address the issue by implementing a solution.
Implementation of the Solution:
Resolve the Issue: Implement the identified solution to rectify the problem. This step involves making necessary changes to the network configuration, replacing faulty hardware, or applying software patches.
Documentation: Document the solution and the steps taken to resolve the issue to provide a reference for future troubleshooting.
Comparison with Other Steps:
Determine Resolution Steps: This is part of the implementation process where specific actions are outlined, but the actual next step after testing is to implement those steps.
Duplicate the Problem in a Lab: This step is typically done earlier in the troubleshooting process to understand the problem, not after confirming the root cause.
Present the Theory for Approval: In some scenarios, presenting the theory might be necessary for major changes, but generally, once the root cause is confirmed, the solution should be implemented.
Final Verification:
After implementing the solution, it is important to verify that the issue is resolved and that normal operations are restored. This may involve monitoring the network and testing to ensure no further issues arise.
Reference: CompTIA Network+ study materials on troubleshooting methodologies and best practices.
A
Explanation:
Troubleshooting Methodology:
Confirming the Root Cause: After testing and confirming the theory, the next logical step is to address the issue by implementing a solution.
Implementation of the Solution:
Resolve the Issue: Implement the identified solution to rectify the problem. This step involves making necessary changes to the network configuration, replacing faulty hardware, or applying software patches.
Documentation: Document the solution and the steps taken to resolve the issue to provide a reference for future troubleshooting.
Comparison with Other Steps:
Determine Resolution Steps: This is part of the implementation process where specific actions are outlined, but the actual next step after testing is to implement those steps.
Duplicate the Problem in a Lab: This step is typically done earlier in the troubleshooting process to understand the problem, not after confirming the root cause.
Present the Theory for Approval: In some scenarios, presenting the theory might be necessary for major changes, but generally, once the root cause is confirmed, the solution should be implemented.
Final Verification:
After implementing the solution, it is important to verify that the issue is resolved and that normal operations are restored. This may involve monitoring the network and testing to ensure no further issues arise.
Reference: CompTIA Network+ study materials on troubleshooting methodologies and best practices.
Question #90
Which of the following routing protocols is most commonly used to interconnect WANs?
- A . IGP
- B . EIGRP
- C . BGP
- D . OSPF
Correct Answer: C
C
Explanation:
Border Gateway Protocol (BGP): BGP is the most commonly used routing protocol for interconnecting WANs, especially across the internet. It is used for exchanging routing information between autonomous systems (AS), making it the backbone protocol for large-scale WANs.
IGP (A): Interior Gateway Protocols like OSPF and EIGRP are typically used within a single AS, not between them.
EIGRP (B): While it is efficient, EIGRP is primarily used for intra-domain routing and not ideal for WAN interconnection.
OSPF (D): While OSPF can be used for WANs, it is not as common as BGP for inter-AS communication.
Reference: CompTIA Network+ Official Study Guide, Domain 1.3 (WAN Concepts), Domain 2.5 (Routing Protocols).
C
Explanation:
Border Gateway Protocol (BGP): BGP is the most commonly used routing protocol for interconnecting WANs, especially across the internet. It is used for exchanging routing information between autonomous systems (AS), making it the backbone protocol for large-scale WANs.
IGP (A): Interior Gateway Protocols like OSPF and EIGRP are typically used within a single AS, not between them.
EIGRP (B): While it is efficient, EIGRP is primarily used for intra-domain routing and not ideal for WAN interconnection.
OSPF (D): While OSPF can be used for WANs, it is not as common as BGP for inter-AS communication.
Reference: CompTIA Network+ Official Study Guide, Domain 1.3 (WAN Concepts), Domain 2.5 (Routing Protocols).