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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Networking Fundamentals | 23% | - OSI and TCP/IP models - Ports, protocols, and services - Network devices and cabling - Network topologies and types - IP addressing and subnetting |
| Topic 2: Network Security | 14% | - Network hardening and secure configuration - Security concepts and frameworks - Threats, vulnerabilities, and mitigation - Segmentation and traffic protection - Authentication and access control |
| Topic 3: Network Implementations | 20% | - Wireless standards and deployment - Physical network installation - Switching technologies and configurations - Network services configuration - Routing concepts and protocols |
| Topic 4: Network Operations | 19% | - High availability and redundancy - Infrastructure automation basics - Performance management and optimization - Business continuity and disaster recovery - Network monitoring and documentation |
| Topic 5: Network Troubleshooting | 24% | - Tools and command-line utilities - Performance and latency problems - Troubleshooting methodology - Connectivity issues - Wireless and security troubleshooting |
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問題 #410
Which of the following protocols has a default administrative distance value of 90?
答案：D
解題說明：
EIGRP (Enhanced Interior Gateway Routing Protocol) has a default administrative distance (AD) value of 90 for internal routes. The administrative distance is used to rate the trustworthiness of routing information received from different routing protocols. EIGRP, developed by Cisco, has an AD of 90, which is lower than that of RIP (120) and OSPF (110), making it more preferred if multiple protocols provide a route to the same destination.
問題 #411
A server administrator deploys a new web server with an IP address of 192.168.16.100. The security policy dictates that all non-secure connection methods should be blocked. Which of the following security rules will satisfy the request without prohibiting other traffic?
答案：A
解題說明：
Denying TCP port 80 specifically for 192.168.16.100 blocks unencrypted HTTP while permitting all other traffic - including HTTPS on port 443 - so secure connections remain allowed.
問題 #412
A network engineer added more APs to improve wireless coverage. However, users now report that the connectivity disconnects and reconnects repeatedly. Which of the following is causing the issue?
答案：C
解題說明：
Adding more access points can improve coverage, but it also increases the risk of co-channel interference if APs are configured on the same or overlapping channels. Channel overlap causes contention and interference, leading to retries, unstable performance, and symptoms that feel like frequent disconnect
/reconnect events-especially in dense deployments. Network+ (N10-009) wireless troubleshooting objectives highlight proper channel planning (non-overlapping channels, appropriate channel width) as critical when increasing AP density. If adjacent APs are competing on the same channel (or overlapping channels in
2.4 GHz), clients may experience poor signal-to-noise ratios and repeated reassociations as they struggle to maintain a stable link.
Roaming misconfiguration can cause sticky clients or poor handoffs, but the classic problem introduced immediately after "adding more APs" is interference from bad channel design. Throughput capacity is about available bandwidth and airtime efficiency; it can make things slow, but it doesn't inherently cause repeated disconnect/reconnect loops like interference does. Packet loss is a symptom that may occur due to interference, but the root cause in the options that best fits the scenario is channel overlap.
問題 #413
Which of the following attacks can cause users who are attempting to access a company website to be directed to an entirely different website?
答案：C
解題說明：
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.
問題 #414
A network administrator configures a new network discovery tool and is concerned that it might disrupt business operations. Which of the following scan types should the administrator configure?
答案：A
解題說明：
A scheduled scan allows the administrator to run discovery during off-peak hours, minimizing the risk of disrupting normal business operations while still gathering necessary network information.
問題 #415
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