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| Section | Objectives |
|---|---|
| Topic 1: Network Security | - Network hardening techniques - Access control and authentication - Security concepts and threats |
| Topic 2: Networking Concepts | - Network topologies and types (LAN, WAN, WLAN) - IPv4 and IPv6 addressing - Ports, protocols, and services - OSI model and TCP/IP model |
| Topic 3: Network Operations | - Monitoring and optimization - Business continuity and disaster recovery - Network documentation and diagrams |
| Topic 4: Network Implementation | - Network storage and virtualization - Switching technologies - Wireless networking - Routing technologies |
| Topic 5: Network Troubleshooting | - Common network issues - Troubleshooting methodology - Tools and diagnostic techniques |
>> N10-009 Latest Study Notes <<
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NEW QUESTION # 259
A network technician is troubleshooting a faulty NIC and tests the theory. Which of the following should the technician do next?
Answer: C
Explanation:
Once the theory has been tested and confirmed, the next step is to implement the solution based on the CompTIA troubleshooting model.
NEW QUESTION # 260
A company is opening a new site that needs to be divided into subnets that accommodate 75 hosts each. Which of the following is the most efficient subnet?
Answer: D
Explanation:
A subnet for 75 hosts must provide at least 75 usable IP addresses. A /25 subnet provides 128 total addresses, with 126 usable host addresses, making it the smallest option that can support
75 hosts efficiently.
NEW QUESTION # 261
Which Wi-Fi security configuration provides compatibility for older devices while allowing newer devices to use stronger encryption?
Answer: D
Explanation:
WPA2/WPA3 mixed mode provides compatibility for older devices (that only support WPA2) while allowing newer devices to take advantage of stronger WPA3 encryption. This ensures maximum compatibility and security in a mixed-device environment.
* A. WPA3 only is most secure but not compatible with legacy devices.
* B. WPA2 only is secure but does not future-proof against WPA3-capable devices.
* D. WPA/WPA2 mixed mode is weaker due to WPA (deprecated, insecure).
References (CompTIA Network+ N10-009):
* Domain: Network Security - Wi-Fi encryption standards, WPA2 vs WPA3, mixed-mode compatibility.
NEW QUESTION # 262
A technician needs to quickly set up a network with five wireless devices. Which of the following network types should the technician configure to accomplish this task?
Answer: B
Explanation:
The correct answer is Ad hoc because it allows wireless devices to communicate directly with one another without requiring a centralized access point or additional infrastructure. According to CompTIA Network+ (N10-009) objectives under wireless networking concepts, an ad hoc network (also known as an Independent Basic Service Set, or IBSS) enables peer-to-peer wireless communication.
This type of network is ideal for temporary or quick setups where only a small number of devices need to connect. In an ad hoc configuration, each device connects directly to others, making it simple and fast to deploy without requiring switches, routers, or wireless access points.
Spine and leaf (Option B) is a data center architecture designed for high scalability and redundancy, not small wireless setups. Point-to-point (Option C) refers to a direct connection between two devices only, which would not support five devices efficiently. Mesh (Option D) allows multiple nodes to interconnect and provide redundancy, but it is more complex and typically requires compatible infrastructure devices.
Therefore, for a quick setup with five wireless devices, an ad hoc network is the most appropriate choice.
NEW QUESTION # 263
A network administrator is looking for a solution to extend Layer 2 capabilities and replicate backups between sites. Which of the following is the best solution?
Answer: C
Explanation:
The correct solution is a Data Center Interconnect (DCI). DCIs extend Layer 2 networks across geographically dispersed data centers, enabling seamless replication of services such as SAN storage, backup synchronization, or VM migrations. This ensures workloads and data can move between sites while maintaining the same VLANs and addressing.
A . Security Service Edge (SSE) provides cloud-delivered security functions like secure web gateways and CASB, not Layer 2 extension.
C . Infrastructure as code (IaC) automates deployment and management of network infrastructure but is unrelated to extending Layer 2 domains.
D . Zero Trust architecture is a security framework ensuring strict access control but doesn't address network connectivity between sites.
In scenarios where backups need replication between sites, Layer 2 extension is often required so systems can communicate as if they are in the same broadcast domain. DCI is specifically designed to provide this functionality reliably and securely.
Reference:
Domain: Network Infrastructure - WAN technologies, data center interconnect, backup replication.
NEW QUESTION # 264
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