Section 5.4 Demonstrate your acquired knowledge about if given a scenario, troubleshoot common performance issues. This will demonstrate your proficiency for section 5.4 of the Network+ 10-009 objectives. 1 / 25 An application performs well at night but poorly during the day. What is the likely cause? Congestion due to peak-hour traffic Incorrect DNS entries Bad gateway configuration Signal degradation 2 / 25 Which wireless technology setting could reduce contention and improve throughput on crowded 2.4 GHz bands? Reduce bandwidth Use non-overlapping channels Increase channel overlap Enable MAC flooding 3 / 25 A network engineer is troubleshooting throughput issues on a 1 Gbps fiber link. Only 200 Mbps is achieved. What is likely? DNS cache issues Bottleneck in intermediate devices ARP spoofing VLAN trunking issue 4 / 25 What issue is commonly seen when wireless clients associate with an AP far away instead of a closer one? Roaming misconfiguration VLAN mismatch Packet fragmentation ACL blocking 5 / 25 Which condition can cause low signal-to-noise ratio (SNR) in a wireless environment? Interference from other RF sources Duplicate IP addresses Static routing Proxy configuration 6 / 25 What kind of test would help verify end-to-end delay between devices across a WAN link? DNS lookup Traceroute Ping with response time analysis NetBIOS scan 7 / 25 What could cause increased packet loss on a network experiencing high CPU usage on routers? Jitter Dropped packets due to processing limits DNS poisoning VLAN tagging 8 / 25 What symptom might appear if a wireless client moves between access points with no fast roaming configuration? Static IP conflict DNS delay Connection drops or lag during roaming VLAN mismatch 9 / 25 Which of the following best explains how bandwidth differs from throughput? They are the same Throughput includes latency Bandwidth is the maximum capacity; throughput is the actual performance Bandwidth accounts for retries 10 / 25 Which symptom would you expect if many devices compete for limited network bandwidth? DHCP starvation Contention MAC flooding DNS timeout 11 / 25 A wireless client frequently drops connection in an area where signal strength is strong. What could be wrong? Channel width too narrow Client disassociation due to interference or misconfiguration Subnet mismatch VLAN hopping 12 / 25 What is a likely cause of jitter on a wired network? Channel overlap Variability in queuing delays and routing paths Incorrect subnet mask Signal reflection 13 / 25 Multiple users report slow wireless speeds only in a certain area. What tool can help identify the cause? DNS lookup MAC filter Wireless heat map Packet tracer 14 / 25 In a network with high bandwidth but poor performance, what metric should be examined next? Signal strength MTU Throughput Spanning Tree 15 / 25 Which of the following would most likely contribute to wireless signal degradation over distance? Jitter High port utilization Physical obstructions and attenuation Rogue access point 16 / 25 What performance symptom might you observe if a switch port is set to 100 Mbps and the connected device pushes 1 Gbps? Jitter Bottlenecking Interference Signal degradation 17 / 25 A user complains of poor Wi-Fi signal in a corner office. What is the most probable issue? Incorrect SSID Insufficient wireless coverage DHCP misconfiguration High jitter 18 / 25 What is the term for data packets being dropped during transmission, commonly due to congestion or buffer overflows? Jitter Latency Packet loss Signal reflection 19 / 25 In a wireless deployment, devices are frequently disconnecting as users move through the building. What is a likely cause? DHCP pool exhaustion Roaming misconfiguration VLAN mismatch Broadcast storm 20 / 25 Which wireless issue often results when two nearby access points are configured on overlapping channels? Jitter Channel interference Disassociation Client overload 21 / 25 A user reports long loading times on a cloud application. A ping test shows high response times. Which issue is this? Latency Packet loss Bandwidth exhaustion Contention 22 / 25 Which metric best describes the rate of successful data delivery over a network link? Latency Throughput Contention MTU 23 / 25 You notice that a VoIP call has distorted audio with irregular delays. What issue is most likely present? Congestion Latency Jitter Packet duplication 24 / 25 Which performance issue occurs when a device in the data path cannot handle the volume of data being transferred? Contention Bottlenecking Roaming misconfiguration ARP flooding 25 / 25 What network condition occurs when traffic demand exceeds available bandwidth, causing slowdowns? Latency Congestion Packet jitter Signal degradation Your score is 0% Restart quiz Return to CompTia N+ 10-009 Objectives
