CompTIA Network+ Practice Test for Subdomain 5.3 #02

Welcome to today’s CompTIA Network+ practice test!

This practice test uses our new UI!

Today’s practice test is based on Subdomain 5.3 (Given a scenario, troubleshoot common issues with network services) from the CompTIA Network+ N10-009 objectives.

This beginner-level practice test is inspired by the CompTIA Network+ (N10-009) exam and is designed to help you reinforce key networking concepts on a daily basis.

These questions are not official exam questions, nor are they brain dumps, but they reflect topics and scenarios relevant to the Network+ certification. Use them to test your knowledge, identify areas for improvement, and build daily cybersecurity habits.

Note: CompTIA and Network+ are registered trademarks of CompTIA. This content is not affiliated with or endorsed by CompTIA.

To choose CompTIA Network+ practice tests based on specific domains/subdomains, click that link.

CompTIA Network+ Practice Test of the Day 260531

10 questions • Single best answer

Question 1

A help desk technician at a regional healthcare provider receives multiple tickets from users on a specific floor who cannot obtain IP addresses. Other floors are unaffected. The DHCP server is reachable and the service is running normally. What is the most likely cause?

A. DNS server failure on that subnet B. Default gateway misconfiguration C. DHCP scope exhaustion for that subnet D. NTP synchronization failure

Question 2

A network technician at a law firm finds that workstations can reach servers using IP addresses directly but fail when using hostnames. All devices have valid IP configurations and can ping each other. What is the most likely cause of the problem?

A. DNS server unavailable or misconfigured B. Default gateway configuration error C. VLAN mismatch on the access port D. DHCP lease expiration on affected hosts

Question 3

After a new access switch is installed, users on a specific floor report they cannot communicate with resources in another building, but can communicate with colleagues on the same floor. Users in other parts of the building are unaffected. What is the most likely cause?

A. Routing loop between distribution switches B. STP blocking the new switch's uplink C. NTP misconfiguration on the new switch D. VLAN mismatch on the new switch's uplink trunk port

Question 4

A network administrator notices SSL certificate validation errors appearing simultaneously across many applications and services throughout the organization. Checking client machines reveals system clocks are several minutes off from the actual time. What service misconfiguration is the root cause?

A. DHCP lease conflict on client systems B. NTP synchronization failure causing clock drift C. DNS returning incorrect server addresses D. Default gateway routing error

Question 5

A workstation at a branch office communicates normally with all devices on the same subnet but cannot reach resources on remote networks or the internet. IP address, subnet mask, and DNS settings are all correct. What is the most likely cause?

A. DNS server is unreachable B. VLAN mismatch on the access port C. Incorrect or missing default gateway configuration D. DHCP scope exhaustion

Question 6

A technician notices that workstations on some floors receive 169.254.x.x addresses while others receive valid corporate addresses. The DHCP server is active and processing requests. What is the most likely cause?

A. DHCP scope exhaustion on the main server B. DNS server not responding to DHCP client queries C. STP topology change blocking some DHCP traffic D. A rogue DHCP server responding before the legitimate server

Question 7

A network engineer at a healthcare organization notices broadcast storms saturating switch uplinks after a new unmanaged switch was connected to the access layer. Traffic loops are consuming all available bandwidth. What is the most likely cause?

A. Spanning tree failure allowing a switching loop B. Routing loop between core switches C. VLAN mismatch on the new switch uplink D. A rogue DHCP server flooding the segment

Question 8

A developer reports that internal resources resolve to correct addresses from inside the office network, but the same hostnames return different IP addresses when accessed remotely over VPN. External DNS returns the public IP. What configuration issue is present?

A. DHCP misconfiguration issuing wrong DNS server to VPN clients B. Split-horizon DNS misconfiguration C. Default gateway routing issue on the VPN tunnel D. NTP failure causing stale DNS cache entries

Question 9

A network engineer runs traceroute to a specific destination and observes the same three router IP addresses repeating in the output indefinitely. Packets never reach the intended destination. What is the most likely cause?

A. DNS resolution failure preventing route lookup B. STP blocking the path to the destination C. Routing loop causing packets to cycle between routers D. Default gateway misconfiguration on the originating host

Question 10

A technician confirms the DHCP service is running and existing scopes are issuing addresses normally. Hosts on a newly added subnet cannot receive IP addresses, while all other subnets work correctly. What is the most likely cause?

A. DNS server unreachable for the new subnet B. NTP service misconfiguration affecting lease timing C. STP blocking DHCP broadcast traffic on the new subnet D. No DHCP scope configured for the new subnet

CompTIA Network+ Practice Test for Subdomain 5.3 #02

Related Posts

Leave a Comment Cancel Reply