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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Network Security | 14% | - Segmentation and traffic protection - Authentication and access control - Security concepts and frameworks - Network hardening and secure configuration - Threats, vulnerabilities, and mitigation |
| Topic 2: Network Operations | 19% | - Performance management and optimization - Infrastructure automation basics - Network monitoring and documentation - Business continuity and disaster recovery - High availability and redundancy |
| Topic 3: Network Troubleshooting | 24% | - Connectivity issues - Tools and command-line utilities - Performance and latency problems - Wireless and security troubleshooting - Troubleshooting methodology |
| Topic 4: Networking Fundamentals | 23% | - Ports, protocols, and services - OSI and TCP/IP models - Network topologies and types - Network devices and cabling - IP addressing and subnetting |
| Topic 5: Network Implementations | 20% | - Physical network installation - Routing concepts and protocols - Switching technologies and configurations - Wireless standards and deployment - Network services configuration |
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NEW QUESTION # 461
Which of the following fiber connector types is the most likely to be used on a network interface card?
Answer: C
Explanation:
* Definition of Fiber Connector Types:
* LC (Lucent Connector):A small form-factor fiber optic connector with a push-pull latching mechanism, commonly used for high-density applications.
* SC (Subscriber Connector or Standard Connector):A larger form-factor connector with a push-pull latching mechanism, often used in datacom and telecom applications.
* ST (Straight Tip):A bayonet-style connector, typically used in multimode fiber optic networks.
* MPO (Multi-fiber Push On):A connector designed to support multiple fibers (typically 12 or 24 fibers), used in high-density cabling environments.
* Common Usage:
* LC Connectors:Due to their small size, LC connectors are widely used in network interface cards (NICs) and high-density environments such as data centers. They allow for more connections in a smaller space compared to SC and ST connectors.
* SC and ST Connectors:These are larger and more commonly used in patch panels and older fiber installations but are less suitable for high-density applications.
* MPO Connectors:Primarily used for trunk cables in data centers and high-density applications but not typically on individual network interface cards.
* Selection Criteria:
* The small form-factor and high-density capabilities of LC connectors make them the preferred choice for network interface cards, where space and connection density are critical considerations.
References:
* CompTIA Network+ study materials on fiber optics and connector types.
NEW QUESTION # 462
A network engineer is installing new PoE wireless APs. The first five APs deploy successfully, but the sixth one fails to start. Which of the following should the engineer investigate first?
Answer: D
Explanation:
When deploying multiple Power over Ethernet (PoE) devices, the switch's power budget can be exhausted. If the available wattage on the switch cannot supply the additional AP, it will fail to power on. This is the most likely cause when previous APs worked fine but a new one does not.
A). Signal strength affects wireless connectivity, not whether the AP powers up.
B). Duplex mismatch causes poor throughput, not power failure.
D). CRC errors point to cabling issues but do not prevent booting if no power is available.
References (CompTIA Network+ N10-009):
Domain: Network Troubleshooting - PoE power budget considerations, device startup issues.
NEW QUESTION # 463
Which of the following is the correct order of components in a bottom-up approach for the three- tier hierarchical model?
Answer: A
Explanation:
The three-tier hierarchical model in network design consists of three layers: access, distribution, and core. The access layer is where devices like PCs and printers connect to the network. The distribution layer aggregates the data received from the access layer switches before it is transmitted to the core layer, which is responsible for high-speed data transfer and routing. This approach improves scalability and performance in larger networks.
NEW QUESTION # 464
A network administrator needs to limit devices that can connect to a small wireless network. The network consists of less than ten unique laptops, and no network changes are anticipated. Which of the following is the simplest way to accomplish this task?
Answer: A
Explanation:
MAC filtering is the simplest method for a small, stable wireless network because it allows only listed device MAC addresses to connect.
NEW QUESTION # 465
A network security administrator needs to monitor the contents of data sent between a secure network and the rest of the company. Which of the following monitoring methods will accomplish this task?
Answer: C
Explanation:
To monitor the contents of data (i.e., inspect the actual packets/frames and their payloads) moving between networks, the administrator should use port mirroring (also called SPAN on some platforms). Port mirroring copies traffic from one or more switch ports (or VLANs) to a designated monitoring port where a packet analyzer/IDS sensor can capture and inspect the traffic in detail. This aligns with Network+ (N10-009) security and monitoring concepts that distinguish between packet-level visibility and higher-level summaries or logs. If the requirement is explicitly to monitor "contents," you need a method that provides full packet capture capability, not just metadata.
Flow data (e.g., NetFlow) provides summarized metadata-who talked to whom, how much, ports, and timestamps-but not full payload contents. Syslog entries are device/application-generated logs and only show events a device chooses to report; they don't provide full data content visibility. SNMP traps are alerts about status changes (interfaces, thresholds, etc.) and similarly do not include traffic contents. Therefore, port mirroring is the correct monitoring method for inspecting data contents in transit.
NEW QUESTION # 466
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