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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Network Security | 14% | - Segmentation and traffic protection - Authentication and access control - Network hardening and secure configuration - Threats, vulnerabilities, and mitigation - Security concepts and frameworks |
| Topic 2: Network Implementations | 20% | - Network services configuration - Wireless standards and deployment - Switching technologies and configurations - Physical network installation - Routing concepts and protocols |
| Topic 3: Network Troubleshooting | 24% | - Performance and latency problems - Tools and command-line utilities - Wireless and security troubleshooting - Troubleshooting methodology - Connectivity issues |
| Topic 4: Networking Fundamentals | 23% | - Network devices and cabling - OSI and TCP/IP models - Network topologies and types - Ports, protocols, and services - IP addressing and subnetting |
| Topic 5: Network Operations | 19% | - Network monitoring and documentation - Performance management and optimization - Infrastructure automation basics - Business continuity and disaster recovery - High availability and redundancy |
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429. Frage
Which of the following is created to illustrate the effectiveness of wireless networking coverage in a building?
Antwort: C
Begründung:
* Definition of Heat Maps:
* A heat map is a graphical representation of data where individual values are represented by colors.
In the context of wireless networking, a heat map shows the wireless signal strength in different areas of a building.
* Purpose of a Heat Map:
* Heat maps are used to illustrate the effectiveness of wireless networking coverage, identify dead zones, and optimize the placement of access points (APs) to ensure adequate coverage and
* performance.
* Comparison with Other Options:
* Logical Diagram: Represents the logical connections and relationships within the network.
* Layer 3 Network Diagram: Focuses on the routing and IP addressing within the network.
* Service-Level Agreement (SLA): A contract that specifies the expected service levels between a service provider and a customer.
* Creation and Use:
* Heat maps are created using specialized software or tools that measure wireless signal strength throughout the building. The data collected is then used to generate a visual map, guiding network administrators in optimizing wireless coverage.
References:
* CompTIA Network+ certification materials and wireless network planning guides.
430. Frage
A router is learning routes using various methods. Which of the following routes will be selected as the next hop?
Antwort: C
Begründung:
Static routes have the lowest administrative distance by default, making them the most trusted route source, so they are selected as the next hop over dynamically learned routes.
431. Frage
After a networking intern plugged in a switch, a significant number of users in a building lost connectivity. Which of the following is the most likely root cause?
Antwort: D
Begründung:
In a VTP domain, switches share VLAN information based on a revision number. If an intern plugs in a "new" (or repurposed) switch that has a higher revision number and is set to Server mode, it will advertise its VLAN database to the rest of the network.
If that switch has no VLANs configured (or a different set), every other switch in the domain will overwrite their own databases to match it. This effectively deletes the production VLANs, causing almost everyone to lose connectivity because their ports no longer belong to a valid VLAN.
432. Frage
Which of the following best describes the transmission format that occurs at the transport layer over connectionless communication?
Antwort: C
Begründung:
At the transport layer, connectionless communication is typically handled using the User Datagram Protocol (UDP), which transmits data in units called datagrams. Unlike TCP, UDP does not establish a connection before sending data and does not guarantee delivery, making datagrams the correct term for the transmission format in this context. References: CompTIA Network+ Exam Objectives and official study guides.
433. Frage
A network administrator for a small office is adding a passive IDS to its network switch for the purpose of inspecting network traffic. Which of the following should the administrator use?
Antwort: B
Begründung:
Port mirroring, also known as SPAN (Switched Port Analyzer), is used to send a copy of network packets seen on one switch port (or an entire VLAN) to another port where the IDS is connected. This allows the IDS to passively inspect network traffic without interfering with the actual traffic flow. Port mirroring is an essential feature for implementing IDS in a network for traffic analysis and security monitoring.
Reference: CompTIA Network+ study materials.
434. Frage
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