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| Section | Objectives |
|---|---|
| Networking Concepts | - Network topologies and types (LAN, WAN, WLAN) - IPv4 and IPv6 addressing - OSI model and TCP/IP model - Ports, protocols, and services |
| Network Implementation | - Switching technologies - Network storage and virtualization - Routing technologies - Wireless networking |
| Network Security | - Security concepts and threats - Network hardening techniques - Access control and authentication |
| Network Operations | - Monitoring and optimization - Business continuity and disaster recovery - Network documentation and diagrams |
| Network Troubleshooting | - Tools and diagnostic techniques - Troubleshooting methodology - Common network issues |
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NEW QUESTION # 234
Which of the following concepts describes the idea of housing different customers in the same public cloud data center?
Answer: D
Explanation:
Comprehensive and Detailed Explanation (aligned to N10-009):
Multitenancy is a cloud concept where multiple customers share the same physical resources (servers, storage, and networks) but remain logically separated for security and privacy.
A . Elasticity is auto-scaling resources.
B . Hybrid cloud combines private and public resources.
C . Scalability is the ability to grow resources but doesn't imply multiple customers.
Reference (CompTIA Network+ N10-009):
NEW QUESTION # 235
Which of the following can help prevent unauthorized modifications to hardware when designing an MDF closet?
Answer: B
Explanation:
Lockable cabinets are an effective physical security measure to prevent unauthorized access or modifications to hardware in an MDF (Main Distribution Frame) closet. By securing the equipment inside a locked cabinet, only authorized personnel can make changes to the hardware, which helps safeguard against tampering or unauthorized modifications.
NEW QUESTION # 236
Which of the following impacts the availability of a web-based customer portal?
Answer: D
Explanation:
A DoS (Denial of Service) attack directly targets availability, one of the core security goals (CIA triad) emphasized in Network+ (N10-009) security objectives. A web-based customer portal depends on reachable services (web servers, load balancers, DNS, upstream bandwidth). In a DoS, an attacker attempts to overwhelm the portal or its supporting infrastructure-consuming bandwidth, exhausting server resources, or saturating state tables-so legitimate users cannot connect or experience severe degradation. This is the most direct and common scenario where "availability" is impacted for a public web service.
MAC flooding aims to overflow a switch's CAM table and can lead to traffic being broadcast out ports, which is more commonly associated with enabling sniffing or disruption within a local switched network segment-not typically the primary attack described for a web portal's availability. ARP spoofing is a local network man-in-the-middle/redirection technique affecting integrity/confidentiality and potentially availability for local hosts, but it is not the best match for a public portal availability impact. Rogue devices can introduce risk, but the option is broad and indirect; DoS is the clearest availability-focused threat.
NEW QUESTION # 237
After installing a series of Cat 8 keystones, a data center architect notices higher than normal interference during tests. Which of the following steps should the architect take to troubleshoot the issue?
Answer: B
Explanation:
Importance of Proper Termination:
Cat 8 cabling requires precise termination practices to ensure signal integrity and reduce interference. One common requirement is to wrap the end connections in copper tape to maintain shielding and reduce electromagnetic interference (EMI).
Interference Troubleshooting:
Interference in high-frequency cables like Cat 8 can be caused by improper shielding or grounding. Checking the end connections for proper wrapping in copper tape is a crucial step.
Why Other Options are Less Likely:
Passthrough modular crimping plugs: Not specifically related to interference issues and are typically used for ease of cable assembly.
Connecting RX/TX wires to different pins: Would likely result in no connection or incorrect data transmission rather than interference.
Running a speed test on a device that can only achieve 100Mbps speeds: This would not diagnose interference and would not provide relevant information for Cat 8 cabling rated for higher speeds.
Corrective Actions:
Verify that all end connections are properly wrapped with copper tape before termination.
Ensure that the shielding is continuous and properly grounded throughout the installation.
Retest the cabling for interference after making corrections.
Reference:
CompTIA Network+ study materials and structured cabling installation guides.
NEW QUESTION # 238
A network administrator manages multiple computers and notices that three computers are no longer communicating with the network. Which of the following commands best identifies whether other devices are restricting packet traffic?
Answer: B
Explanation:
Traceroute shows the path packets take through the network and identifies where they are being dropped or blocked, helping determine if an intermediate device is restricting traffic.
NEW QUESTION # 239
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