The chapters in this document are displayed in reversed order, with the last chapter appearing first.
This change ensures all chapters are included in the test bank.
Complete Chapters Included
CompTIA Network+ N10-009
Test Bank Chap 1 to 25 ✅
Chapter 25: Network Troubleshoo?ng Tools
1. Which tool would be most suitable for checking open ports on mul?ple network devices in
a subnet?
A) Bandwidth Speed Tester
B) NetFlow Analyzer
C) Port Scanner
D) Terminal Emulator
Answer: C
ExplanaAon: A port scanner probes network devices for open ports and can perform sweeps
across mulAple devices in a subnet to idenAfy open ports or potenAal vulnerabiliAes.
2. How does LLDP assist network administrators in managing networks?
A) By capturing packet data for in-depth traffic analysis
B) By mapping network topology through device informaAon exchange
C) By providing secure authenAcaAon for device connecAons
D) By scanning for open ports on a network device
Answer: B
ExplanaAon: Link Layer Discovery Protocol (LLDP) is used by devices to adverAse informaAon
about themselves to neighboring devices, helping administrators to map out network
topology and manage network connecAvity.
3. An administrator needs to determine the primary protocols used on a network and
iden?fy high-traffic IP addresses. Which tool would be the most effec?ve?
A) iperf
B) NetFlow Analyzer
C) Bandwidth Speed Tester
D) IP Scanner
Answer: B
ExplanaAon: NetFlow Analyzer is designed to collect and analyze traffic flow staAsAcs, which
can help idenAfy top protocols, IP addresses, and other criAcal traffic metrics.
4. Which tool is best suited to simulate network traffic to test bandwidth availability?
A) Wireshark
, B) IP Scanner
C) iperf
D) Protocol Analyzer
Answer: C
ExplanaAon: iperf is a tool that measures available bandwidth on IP networks, allowing users
to simulate traffic to test maximum bandwidth capacity and assess network performance.
5. Which layer protocol does the ping command use?
A) Layer 2
B) Layer 3
C) Layer 4
D) Layer 7
Answer: B
ExplanaAon: The ping command uses Internet Control Message Protocol (ICMP), which
operates at the Network Layer (Layer 3) in the OSI model to check connecAvity.
6. If you are unable to reach a device using ping, which command might you use next to
ensure your IP configura?on is correct?
A) ipconfig /all
B) ipconfig /release
C) ping -t
D) ping -6
Answer: A
ExplanaAon: ipconfig /all can provide a detailed view of the device's IP configuraAon, helping
to idenAfy issues with seZngs like default gateways or DNS, which may explain why the
device cannot reach the target.
7. In the Windows nslookup command, what happens when you enter ‘?’ at the prompt?
A) Exits interacAve mode
B) Displays command opAons
C) Clears the screen
D) Lists IP address mappings
Answer: B
ExplanaAon: Entering ‘?’ at the prompt in nslookup displays a help screen that lists all
available command opAons for the tool.
8. In the dig command output, what does the "A" indicate in the QUESTION SECTION?
, A) It is an alias record.
B) It is an authoritaAve response.
C) It is a DNS record type indicaAng an IPv4 address.
D) It specifies a recursive query.
Answer: C
ExplanaAon: In DNS, an "A" record is a resource record type that maps a domain to its
corresponding IPv4 address, as shown in the QUESTION SECTION of dig’s output.
9. How would you sta?cally add an IP-to-MAC address mapping in the ARP table using the
arp command?
A) arp -a inet_addr eth_addr
B) arp -d inet_addr eth_addr
C) arp -s inet_addr eth_addr
D) arp -add inet_addr eth_addr
Answer: C
ExplanaAon: The arp -s command allows you to staAcally add a specific IP and MAC address
entry to the ARP table.
10. When conduc?ng a wireless site survey, which tool helps determine the best placement
for access points?
A) Cable Tester
B) Tap
C) Wi-Fi Analyzer
D) Tone Generator
Answer: C
ExplanaAon: A Wi-Fi analyzer provides insights into signal strength and coverage, aiding in
strategic placement of wireless access points.
11. What does the netstat -b command display?
A) Only acAve IP-based sessions
B) StaAsAcal informaAon for IP-based traffic
C) FQDNs of desAnaAon addresses for acAve sessions
D) The name of the program that opened a specific connecAon
Answer: D
ExplanaAon: The -b opAon with netstat displays the name of the applicaAon or program
responsible for opening a specific connecAon.
, 12. Which command can be used on both Windows and UNIX/Linux to display the system’s
computer name?
A) route
B) hostname
C) netstat
D) ping
Answer: B
ExplanaAon: The hostname command, available on both Windows and UNIX/Linux, displays
the computer name.
13. What effect does the route -f command have when used without any addi?onal op?ons?
A) Clears all route entries, then exits
B) Lists all entries in a PC's rouAng table
C) Adds a staAc route to the rouAng table
D) Modifies an exisAng route entry
Answer: A
ExplanaAon: The -f opAon with route clears all gateway entries from the rouAng table, and if
used with another opAon, it clears gateways before performing any other specified acAon.
14. Which command would you use to view the rou?ng table of IPv4 addresses on a Cisco
router?
A) show ip route
B) show vlan
C) show arp
D) show config
Answer: A
ExplanaAon: The show ip route command is used to view the IPv4 rouAng table, showing the
configured routes on the device.
15. What is the primary purpose of a tone generator in network cable troubleshoo?ng?
A) To measure signal strength
B) To test Ethernet cable conAnuity
C) To detect faults in fiber-opAc cables
D) To locate specific pairs of wires in a connecAon
Answer: D
This change ensures all chapters are included in the test bank.
Complete Chapters Included
CompTIA Network+ N10-009
Test Bank Chap 1 to 25 ✅
Chapter 25: Network Troubleshoo?ng Tools
1. Which tool would be most suitable for checking open ports on mul?ple network devices in
a subnet?
A) Bandwidth Speed Tester
B) NetFlow Analyzer
C) Port Scanner
D) Terminal Emulator
Answer: C
ExplanaAon: A port scanner probes network devices for open ports and can perform sweeps
across mulAple devices in a subnet to idenAfy open ports or potenAal vulnerabiliAes.
2. How does LLDP assist network administrators in managing networks?
A) By capturing packet data for in-depth traffic analysis
B) By mapping network topology through device informaAon exchange
C) By providing secure authenAcaAon for device connecAons
D) By scanning for open ports on a network device
Answer: B
ExplanaAon: Link Layer Discovery Protocol (LLDP) is used by devices to adverAse informaAon
about themselves to neighboring devices, helping administrators to map out network
topology and manage network connecAvity.
3. An administrator needs to determine the primary protocols used on a network and
iden?fy high-traffic IP addresses. Which tool would be the most effec?ve?
A) iperf
B) NetFlow Analyzer
C) Bandwidth Speed Tester
D) IP Scanner
Answer: B
ExplanaAon: NetFlow Analyzer is designed to collect and analyze traffic flow staAsAcs, which
can help idenAfy top protocols, IP addresses, and other criAcal traffic metrics.
4. Which tool is best suited to simulate network traffic to test bandwidth availability?
A) Wireshark
, B) IP Scanner
C) iperf
D) Protocol Analyzer
Answer: C
ExplanaAon: iperf is a tool that measures available bandwidth on IP networks, allowing users
to simulate traffic to test maximum bandwidth capacity and assess network performance.
5. Which layer protocol does the ping command use?
A) Layer 2
B) Layer 3
C) Layer 4
D) Layer 7
Answer: B
ExplanaAon: The ping command uses Internet Control Message Protocol (ICMP), which
operates at the Network Layer (Layer 3) in the OSI model to check connecAvity.
6. If you are unable to reach a device using ping, which command might you use next to
ensure your IP configura?on is correct?
A) ipconfig /all
B) ipconfig /release
C) ping -t
D) ping -6
Answer: A
ExplanaAon: ipconfig /all can provide a detailed view of the device's IP configuraAon, helping
to idenAfy issues with seZngs like default gateways or DNS, which may explain why the
device cannot reach the target.
7. In the Windows nslookup command, what happens when you enter ‘?’ at the prompt?
A) Exits interacAve mode
B) Displays command opAons
C) Clears the screen
D) Lists IP address mappings
Answer: B
ExplanaAon: Entering ‘?’ at the prompt in nslookup displays a help screen that lists all
available command opAons for the tool.
8. In the dig command output, what does the "A" indicate in the QUESTION SECTION?
, A) It is an alias record.
B) It is an authoritaAve response.
C) It is a DNS record type indicaAng an IPv4 address.
D) It specifies a recursive query.
Answer: C
ExplanaAon: In DNS, an "A" record is a resource record type that maps a domain to its
corresponding IPv4 address, as shown in the QUESTION SECTION of dig’s output.
9. How would you sta?cally add an IP-to-MAC address mapping in the ARP table using the
arp command?
A) arp -a inet_addr eth_addr
B) arp -d inet_addr eth_addr
C) arp -s inet_addr eth_addr
D) arp -add inet_addr eth_addr
Answer: C
ExplanaAon: The arp -s command allows you to staAcally add a specific IP and MAC address
entry to the ARP table.
10. When conduc?ng a wireless site survey, which tool helps determine the best placement
for access points?
A) Cable Tester
B) Tap
C) Wi-Fi Analyzer
D) Tone Generator
Answer: C
ExplanaAon: A Wi-Fi analyzer provides insights into signal strength and coverage, aiding in
strategic placement of wireless access points.
11. What does the netstat -b command display?
A) Only acAve IP-based sessions
B) StaAsAcal informaAon for IP-based traffic
C) FQDNs of desAnaAon addresses for acAve sessions
D) The name of the program that opened a specific connecAon
Answer: D
ExplanaAon: The -b opAon with netstat displays the name of the applicaAon or program
responsible for opening a specific connecAon.
, 12. Which command can be used on both Windows and UNIX/Linux to display the system’s
computer name?
A) route
B) hostname
C) netstat
D) ping
Answer: B
ExplanaAon: The hostname command, available on both Windows and UNIX/Linux, displays
the computer name.
13. What effect does the route -f command have when used without any addi?onal op?ons?
A) Clears all route entries, then exits
B) Lists all entries in a PC's rouAng table
C) Adds a staAc route to the rouAng table
D) Modifies an exisAng route entry
Answer: A
ExplanaAon: The -f opAon with route clears all gateway entries from the rouAng table, and if
used with another opAon, it clears gateways before performing any other specified acAon.
14. Which command would you use to view the rou?ng table of IPv4 addresses on a Cisco
router?
A) show ip route
B) show vlan
C) show arp
D) show config
Answer: A
ExplanaAon: The show ip route command is used to view the IPv4 rouAng table, showing the
configured routes on the device.
15. What is the primary purpose of a tone generator in network cable troubleshoo?ng?
A) To measure signal strength
B) To test Ethernet cable conAnuity
C) To detect faults in fiber-opAc cables
D) To locate specific pairs of wires in a connecAon
Answer: D
