CompTIA N10-009 Exam Dumps

CompTIA Network+ Certification Exam

CompTIA N10-009 Sample Questions

Question # 1

Several users in an organization report connectivity issues and lag during a video meeting. The network administrator performs a tcpdump and observes increased retransmissions for other non-video applications on the network. Which of the following symptoms describes the users' reported issues?

A. Latency 
B. Packet loss 
C. Bottlenecking 
D. Jitter 

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Question # 2

After extremely high temperatures cause a power outage, the servers automatically shut down, even though the UPSs for the servers still have hours of battery life. Which of the following should a technician recommend?

A. Include backup power for air-conditioning units 
B. Configure door locks to automatically lock during power outages 
C. Increase UPS battery size 
D. Add an IoT-enabled thermostat 

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Question # 3

A user's home mesh wireless network is experiencing latency issues. A technician has: •Performed a speed test. •Rebooted the devices. •Performed a site survey. •Performed a wireless packet capture. The technician reviews the following information: The technician notices in the packet capture that frames were retransmitted. Which of the following is the most likely cause of the user's network issue?

A. The SSIDs should not be the same. 
B. The network has too much overlap. 
C. The devices are incompatible with the mesh network. 
D. The nodes are underpowered.

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Question # 4

Which of the following troubleshooting steps provides a change advisory board with the information needed to make a decision?

A. Identify the problem 
B. Develop a theory of probable cause 
C. Test the theory to determine cause 
D. Establish a plan of action 

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Question # 5

A network technician is working on a PC with a faulty NIC. The host is connected to a switch with secured ports. After testing the connection cables and using a known-good NIC, the host is still unable to connect to the network. Which of the following is causing the connection issue?

A. MAC address of the new card 
B. BPDU guard settings 
C. Link aggregation settings 
D. PoE power budget 

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Question # 6

During a security audit, a consulting firm notices inconsistencies between the documentation and the actual environment. Which of the following can keep a record of who made the changes and what the changes are?

A. Network access control 
B. Configuration monitoring 
C. Zero Trust 
D. Syslog 

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Question # 7

A network administrator needs to add 255 useable IP addresses to the network. A /24 is currently in use. Which of the following prefixes would fulfill this need?

A. /23 
B. /25 
C. /29
 D. /32 

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Question # 8

After installing a new 6E wireless router in a small office, a technician notices that some wireless devices are not able to achieve the rated speeds. Which of the following should the technician check to troubleshoot the issue? (Select two)

A. Client device compatibility 
B. Back-end cabling 
C. Weather phenomena 
D. Voltage source requirements 
E. Interference levels 
F. Processing power 

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Question # 9

A company has been added to an unapproved list because of spam. The network administrator confirmed that a workstation was infected by malware. Which of the following processes did the administrator use to identify the root cause?

A. Traffic analysis 
B. Availability monitoring 
C. Baseline metrics 
D. Network discovery 

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Question # 10

A user tries to visit a website, but instead of the intended site, the page displays vmw.cba.com. Which of the following should be done to reach the correct website?

A. Modify the CNAME record 
B. Update the PTR record 
C. Change the NTP settings 
D. Delete the TXT record 

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Question # 11

Which of the following attacks forces a switch to send all traffic out of all ports?

A. ARP poisoning 
B. Evil twin 
C. MAC flooding 
D. DNS spoofing 

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Question # 12

Which of the following allows a network administrator to analyze attacks coming from the internet without affecting latency?

A. IPS 
B. IDS 
C. Load balancer 
D. Firewall 

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Question # 13

A network administrator deployed wireless networking in the office area. When users visit the outdoor patio and try to download emails with large attachments or stream training videos, they notice buffering issues. Which of the following is the most likely cause?

A. Network congestion 
B. Wireless interference 
C. Signal degradation 
D. Client disassociation 

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Question # 14

A network administrator is setting up a firewall to protect the organization’s network from external threats. Which of the following should the administrator consider first when configuring the firewall?

A. Required ports, protocols, and services 
B. Inclusion of a deny all rule 
C. VPN access 
D. Outbound access originating from customer-facing servers 

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Question # 15

A government entity wants to implement technology that can block websites based on country code. Which of the following will best enable this requirement? 

A. URL filtering 
B. Content filtering
 C. DNS poisoning 
D. MAC filtering 

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Question # 16

Which of the following best describes the amount of time between a disruptive event and the point that affected resources need to be back to fully functional status? 

A. RTO
 B. MTBF 
C. RPO 
D. MTTR 

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Question # 17

A network administrator is looking for a solution to extend Layer 2 capabilities and replicate backups between sites. Which of the following is the best solution?

A. Security Service Edge 
B. Data center interconnect 
C. Infrastructure as code 
D. Zero Trust architecture 

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Question # 18

A network engineer is installing new PoE wireless APs. The first five APs deploy successfully, but the sixth one fails to start. Which of the following should the engineer investigate first?

A. Signal strength 
B. Duplex mismatch 
C. Power budget
 D. CRC 

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Question # 19

A network engineer is configuring network ports in a public office. To increase security, the engineer wants the ports to allow network connections only after authentication. Which of the following security features should the engineer use?

A. Port security 
B. 802.1X 
C. MAC filtering 
D. Access control list 

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Question # 20

Which of the following protocols is commonly associated with TCP port 443?

A. Telnet 
B. SMTP 
C. HTTPS 
D. SNMP 

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Question # 21

A network technician is configuring the company’s network of 100 Mbps Layer 2 switches. The technician wants increased throughput for the uplinks between switches. The technician connects multiple redundant links between the switches. Which of the following should the technician configure?

A. Spanning Tree Protocol 
B. Switch Virtual Interfaces 
C. Native VLAN 
D. First Hop Redundancy Protocol 

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Question # 22

A network administrator needs to divide 192.168.1.0/24 into two equal halves. Which of the following subnet masks should the administrator use? 

A. 255.255.0.0 
B. 255.255.254.0 
C. 255.255.255.0 
D. 255.255.255.128 

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Question # 23

An investment bank is seeking a DR backup solution. Which of the following provides the most cost-effective backup site?

A. Hot 
B. Cold 
C. Cluster
 D. Warm 

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Question # 24

A network administrator needs to implement a solution to filter access to the internet. Which of the following should the administrator most likely implement?

A. Router 
B. Cloud gateway 
C. Proxy 
D. Intrusion detection system 

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Question # 25

Which of the following network cables involves bouncing light off of protective cladding? 

A. Twinaxial 
B. Coaxial 
C. Single-mode 
D. Multimode

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Question # 26

Which of the following physical installation factors is the most important when a network switch is installed in a sealed enclosure?

A. Fire suppression
 B. Power budget 
C. Temperature 
D. Humidity 

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Question # 27

Which of the following concepts describes the idea of housing different customers in the same public cloud data center?

A. Elasticity 
B. Hybrid cloud 
C. Scalability 
D. Multitenancy 

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Question # 28

A network administrator needs to assign IP addresses to a newly installed network. They choose 192.168.1.0/24 as their network address and need to create three subnets with 30 hosts on each subnet. Which of the following is a valid subnet mask that will meet the requirements?

A. 255.255.255.128 
B. 255.255.255.192 
C. 255.255.255.224 
D. 255.255.255.240 

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Question # 29

An organization is struggling to get effective coverage using the wireless network. The organization wants to implement a solution that allows for continuous connectivity anywhere in the facility. Which of the following should the network administrator suggest to ensure the best coverage?

A. Implementing additional ad hoc access points 
B. Providing more Ethernet drops for user connections 
C. Deploying a mesh network in the building 
D. Changing the current frequency of the Wi-Fi 

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Question # 30

A customer wants to cache commonly used content to reduce the number of full page downloads from the internet. Which of the following should the network administrator recommend? 

A. Proxy server 
B. Load balancer 
C. Open relay 
D. Code repository 

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Question # 31

Which of the following internal routing protocols is best characterized as having fast convergence and being loop-free? 

A. BGP 
B. STP 
C. OSPF
D. RIP 

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Question # 32

Which of the following connection methods allows a network engineer to automate configuration deployment for network devices across the environment? 

A. RDP 
B. Telnet 
C. SSH 
D. GUI 

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Question # 33

A network administrator is developing a method of device monitoring with the following requirements: •Allows for explicit, by user, privilege management •Includes centralized logging of changes •Offers widely accessible remote management •Provides support of service accounts Which of the following will most closely meet these requirements? 

A. SNMP 
B. API 
C. SIEM 
D. SSO 

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Question # 34

Which of the following steps in the troubleshooting methodology comes after using a top-totop buttom examination of the OSI model to determine cause?

A. Test in the theory 
B. Establish a plan of action 
C. Verify full system functionality 
D. Identify the problem 

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Question # 35

A support engineer is troubleshooting a network outage that is affecting 3,000 users. The engineer has isolated the issue to the internet firewall. Packet captures confirm that the firewall is blocking the traffic. Which of the following is the next step in troubleshooting?

A. Implement the solution or escalate as necessary 
B. Create a plan of action to resolve the issue and identify potential effects 
C. Establish a theory of probable cause 
D. Document findings, actions, outcomes, and lessons learned throughout the process 

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Question # 36

A company’s Chief Information Security Officer requires that servers and firewalls have accurate timestamps when creating log files so that security analysts can correlate events during incident investigations. Which of the following should be implemented?

A. Syslog server 
B. SMTP
 C. SNMP 
D. NTP 

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Question # 37

A security administrator is creating a new firewall object for a device with IP address 192.168.100.1/25. However, the firewall software only uses dotted decimal notation in configuration fields. Which of the following is the correct subnet mask to use? 

A. 255.255.254.0 
B. 255.255.255.1 
C. 255.255.255.128 
D. 255.255.255.192 

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Question # 38

Which of the following standards enables the use of an enterprise authentication for network access control?

A. 802.1Q 
B. 802.1X 
C. 802.3bt 
D. 802.11h 

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Question # 39

A network administrator receives complaints of intermittent network connectivity issues. The administrator investigates and finds that the network design contains potential loop scenarios. Which of the following should the administrator do? 

A. Enable spanning tree 
B. Configure port security 
C. Change switchport speed limits 
D. Enforce 802.1Q tagging 

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