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CompTIA N10-009 Exam Syllabus Topics:

SectionWeightObjectives
Network Security14%- Authentication and authorization
  • 1. RADIUS and TACACS+
  • 2. MFA and SSO
- Security technologies
  • 1. PKI and encryption
  • 2. Firewalls and segmentation
- Compliance and risk
  • 1. Compliance standards
  • 2. Risk and vulnerability concepts
Network Operations19%- Network services
  • 1. VPN and remote access
  • 2. DNS and DHCP
- Disaster recovery
  • 1. Business continuity concepts
  • 2. Recovery metrics and backup sites
- Documentation and diagrams
  • 1. Logical and physical diagrams
  • 2. Asset inventory management
- Monitoring and management
  • 1. SNMP and packet capture
  • 2. Performance monitoring
Network Implementation20%- Wireless technologies
  • 1. Access point configuration
  • 2. Wireless standards and security
- Switching technologies
  • 1. VLAN configuration
  • 2. Spanning Tree Protocol
- Routing technologies
  • 1. Static and dynamic routing
  • 2. NAT and routing protocols
- Physical installations
  • 1. Power and environmental considerations
  • 2. Cable management and installation
Networking Concepts23%- Network media and topologies
  • 1. Wireless and wired transmission media
  • 2. Network topologies and architectures
- Cloud and virtualization
  • 1. Cloud deployment models
  • 2. Virtual networking concepts
- Network addressing and protocols
  • 1. IPv4 and IPv6 addressing
  • 2. Common ports and protocols
- OSI model concepts
  • 1. Network devices and appliances
  • 2. OSI layers and functions
Network Troubleshooting24%- Troubleshooting methodology
  • 1. Problem identification
  • 2. Testing and verification
- Common network issues
  • 1. Routing and switching issues
  • 2. Wireless connectivity problems
- Performance troubleshooting
  • 1. Bandwidth bottlenecks
  • 2. Latency and packet loss

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CompTIA Network+ Certification Exam Sample Questions (Q211-Q216):

NEW QUESTION # 211
An ISP provided a company with an IP range of 98.174.235.142/28. A network technician configured a router with a subnet mask of 255.255.255.224 and default gateway of
98.174.235.129. After the configuration was set up. the company is unable to connect to the ISP.
Which of the following would resolve this issue?

Answer: A


NEW QUESTION # 212
Which of the following should a network administrator configure when adding OT devices to an organization's architecture?

Answer: C

Explanation:
Network segmentation involves dividing a network into smaller segments or subnets. This is particularly important when integrating OT (Operational Technology) devices to ensure that these devices are isolated from other parts of the network. Segmentation helps protect the OT devices from potential threats and minimizes the impact of any security incidents. It also helps manage traffic and improves overall network performance.Reference: CompTIA Network+ study materials.


NEW QUESTION # 213
Network administrators are using the Telnet protocol to administer network devices that are on the
192.168.1.0/24 subnet. Which of the following tools should the administrator use to best identify the devices?

Answer: D

Explanation:
nmap(Network Mapper) is the best tool in this scenario. It can scan the 192.168.1.0/24 subnet to discoverlive hosts, open ports (like Telnet on port 23), and device types. It's ideal for mapping and auditing the network.
* A. digis a DNS lookup tool; not useful for identifying hosts on a subnet.
* C. tracertshows the path packets take to a destination, not for host discovery.
* D. telnetis the protocol being used, not a tool for scanning or identifying devices.
#Reference:
CompTIA Network+ N10-009 Official Objectives: 5.1 - Given a scenario, use the appropriate network troubleshooting tools.


NEW QUESTION # 214
A network administrator needs to divide 192.168.1.0/24 into two equal halves. Which of the following subnet masks should the administrator use?

Answer: B

Explanation:
Understanding Subnetting:
Original Network: 192.168.1.0/24 has a subnet mask of 255.255.255.0, which allows for 256 IP addresses (including network and broadcast addresses).
Objective: Divide this network into two equal subnets.
Calculating Subnet Mask:
New Subnet Mask: To divide 192.168.1.0/24 into two equal halves, we need to borrow one bit from the host portion of the address, changing the subnet mask to 255.255.255.128 (/25).
Subnet Breakdown:
First Subnet: 192.168.1.0/25 (192.168.1.0 - 192.168.1.127)
Second Subnet: 192.168.1.128/25 (192.168.1.128 - 192.168.1.255)
Verification:
Each subnet now has 128 IP addresses (126 usable IP addresses, excluding the network and broadcast addresses).


NEW QUESTION # 215
A network technician is attempting to harden a commercial switch that was recently purchased.
Which of the following hardening techniques best mitigates the use of publicly available information?

Answer: A

Explanation:
Changing the default password is one of the most effective and essential hardening steps, as default credentials are widely known and publicly available. Leaving them unchanged poses a major security risk.
Blocking inbound SSH connections might limit remote management but doesn't specifically address default/public info. Removing the gateway may affect network connectivity but does not harden against credential-based risks. Restricting physical access is important, but it doesn't mitigate the risk from publicly known login credentials.
Changing default passwords directly addresses the risk of using publicly available information.


NEW QUESTION # 216
......

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