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Exam Code: N10-009
Exam Name: CompTIA Network+
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CompTIA Network+ N10-009 Practice Test 71

Question 700

An employee's screen shows network admin secrets in a public lobby. Which diagnostic or verification check MOST directly evaluates the expected network behavior in this situation?

  1. Verify the screen uses HTTPS without checking what a passerby can read
  2. Inspect the employee badge but not whether the public-facing display masks secrets
  3. Check monitor power-saving settings without testing the unattended session timeout
  4. Perform benign observation test and check screen masking

Explanation

Correct Answer

D:

Visual disclosure bypasses encrypted transport entirely. The result of the remedy is checked directly: Perform benign observation test and check screen masking.

Incorrect Answers

A:

Verify the screen uses HTTPS without checking what a passerby can read. Visual disclosure bypasses encrypted transport entirely. The appropriate acceptance test is: Perform benign observation test and check screen masking.

B:

Inspect the employee badge but not whether the public-facing display masks secrets. Visual disclosure bypasses encrypted transport entirely. The appropriate acceptance test is: Perform benign observation test and check screen masking.

C:

Check monitor power-saving settings without testing the unattended session timeout. Visual disclosure bypasses encrypted transport entirely. The appropriate acceptance test is: Perform benign observation test and check screen masking.

Question 701

A kiosk suffers a worm infection spreading across SMB shares. Which response MOST directly addresses the stated network problem or requirement?

  1. Isolate infected hosts and harden patching/network segmentation
  2. Allow the infected kiosk to keep accessing every SMB share during the worm outbreak
  3. Disable endpoint patches because the compromised host has been quarantined only by a label
  4. Bridge kiosk and administrative file shares together to simplify emergency response

Explanation

Correct Answer

A:

Malware propagation is a host execution/control issue, not all volumetric DDoS. A direct way to confirm the outcome is to reproduce benign lateral scan in lab and confirm movement blocked.

Incorrect Answers

B:

Allow the infected kiosk to keep accessing every SMB share during the worm outbreak. Malware propagation is a host execution/control issue, not all volumetric DDoS. This does not implement the needed approach: isolate infected hosts and harden patching/network segmentation.

C:

Disable endpoint patches because the compromised host has been quarantined only by a label. Malware propagation is a host execution/control issue, not all volumetric DDoS. This does not implement the needed approach: isolate infected hosts and harden patching/network segmentation.

D:

Bridge kiosk and administrative file shares together to simplify emergency response. Malware propagation is a host execution/control issue, not all volumetric DDoS. This does not implement the needed approach: isolate infected hosts and harden patching/network segmentation.

Question 702

A kiosk suffers a worm infection spreading across SMB shares. Which diagnostic or verification check MOST directly evaluates the expected network behavior in this situation?

  1. Check the kiosk was renamed Isolated without testing its actual SMB lateral reachability
  2. Reproduce benign lateral scan in lab and confirm movement blocked
  3. Verify one uninfected workstation is patched but never test spread from the original kiosk
  4. Inspect antivirus updates while the compromised client still reaches high-value file shares

Explanation

Correct Answer

B:

Malware propagation is a host execution/control issue, not all volumetric DDoS. The result of the remedy is checked directly: Reproduce benign lateral scan in lab and confirm movement blocked.

Incorrect Answers

A:

Check the kiosk was renamed Isolated without testing its actual SMB lateral reachability. Malware propagation is a host execution/control issue, not all volumetric DDoS. The appropriate acceptance test is: Reproduce benign lateral scan in lab and confirm movement blocked.

C:

Verify one uninfected workstation is patched but never test spread from the original kiosk. Malware propagation is a host execution/control issue, not all volumetric DDoS. The appropriate acceptance test is: Reproduce benign lateral scan in lab and confirm movement blocked.

D:

Inspect antivirus updates while the compromised client still reaches high-value file shares. Malware propagation is a host execution/control issue, not all volumetric DDoS. The appropriate acceptance test is: Reproduce benign lateral scan in lab and confirm movement blocked.

Question 703

A DNS answer contains a legitimate domain but a tampered IP for one location. Which response MOST directly addresses the stated network problem or requirement?

  1. Trust any IP in a forged DNS answer because the domain name is spelled correctly
  2. Turn off signed RRset validation where it is available after seeing mismatched answers
  3. Validate cache source and signed-answer chain where available
  4. Modify the website's CSS while recursive resolver poisoning remains uninvestigated

Explanation

Correct Answer

C:

DNSSEC checks integrity and origin; it does not encrypt lookup names. A direct way to confirm the outcome is to compare signed RRset validation and client resolver logs.

Incorrect Answers

A:

Trust any IP in a forged DNS answer because the domain name is spelled correctly. DNSSEC checks integrity and origin; it does not encrypt lookup names. This does not implement the needed approach: validate cache source and signed-answer chain where available.

B:

Turn off signed RRset validation where it is available after seeing mismatched answers. DNSSEC checks integrity and origin; it does not encrypt lookup names. This does not implement the needed approach: validate cache source and signed-answer chain where available.

D:

Modify the website's CSS while recursive resolver poisoning remains uninvestigated. DNSSEC checks integrity and origin; it does not encrypt lookup names. This does not implement the needed approach: validate cache source and signed-answer chain where available.

Question 704

A DNS answer contains a legitimate domain but a tampered IP for one location. Which diagnostic or verification check MOST directly evaluates the expected network behavior in this situation?

  1. Confirm the answer has a valid IPv4 format without validating the signed RRset
  2. Query only a compromised local resolver and assume authoritative zones agree
  3. Ping the forged destination and report the DNS integrity failure resolved
  4. Compare signed RRset validation and client resolver logs

Explanation

Correct Answer

D:

DNSSEC checks integrity and origin; it does not encrypt lookup names. The result of the remedy is checked directly: Compare signed RRset validation and client resolver logs.

Incorrect Answers

A:

Confirm the answer has a valid IPv4 format without validating the signed RRset. DNSSEC checks integrity and origin; it does not encrypt lookup names. The appropriate acceptance test is: Compare signed RRset validation and client resolver logs.

B:

Query only a compromised local resolver and assume authoritative zones agree. DNSSEC checks integrity and origin; it does not encrypt lookup names. The appropriate acceptance test is: Compare signed RRset validation and client resolver logs.

C:

Ping the forged destination and report the DNS integrity failure resolved. DNSSEC checks integrity and origin; it does not encrypt lookup names. The appropriate acceptance test is: Compare signed RRset validation and client resolver logs.

Question 705

A conference user is tricked into joining an open access point with matching brand. Which response MOST directly addresses the stated network problem or requirement?

  1. Validate BSSID, certificate-based enterprise trust and authorized AP inventory
  2. Join the matching-brand open AP merely because its SSID resembles the approved corporate WLAN
  3. Disable server-certificate checks and accept whichever AP responds first
  4. Enter enterprise credentials into an unauthenticated hotspot that is not on the authorized BSSID list

Explanation

Correct Answer

A:

A familiar WLAN name alone is a weak origin signal. A direct way to confirm the outcome is to inspect client associations against known AP identities.

Incorrect Answers

B:

Join the matching-brand open AP merely because its SSID resembles the approved corporate WLAN. A familiar WLAN name alone is a weak origin signal. This does not implement the needed approach: validate BSSID, certificate-based enterprise trust and authorized AP inventory.

C:

Disable server-certificate checks and accept whichever AP responds first. A familiar WLAN name alone is a weak origin signal. This does not implement the needed approach: validate BSSID, certificate-based enterprise trust and authorized AP inventory.

D:

Enter enterprise credentials into an unauthenticated hotspot that is not on the authorized BSSID list. A familiar WLAN name alone is a weak origin signal. This does not implement the needed approach: validate BSSID, certificate-based enterprise trust and authorized AP inventory.

Question 706

A conference user is tricked into joining an open access point with matching brand. Which diagnostic or verification check MOST directly evaluates the expected network behavior in this situation?

  1. Confirm the advertised network brand string but never inspect its BSSID and certificate identity
  2. Inspect client associations against known AP identities
  3. Test Wi-Fi association without checking the AP against the managed inventory
  4. Read the device signal bars and infer the open AP belongs to the conference operator

Explanation

Correct Answer

B:

A familiar WLAN name alone is a weak origin signal. The result of the remedy is checked directly: Inspect client associations against known AP identities.

Incorrect Answers

A:

Confirm the advertised network brand string but never inspect its BSSID and certificate identity. A familiar WLAN name alone is a weak origin signal. The appropriate acceptance test is: Inspect client associations against known AP identities.

C:

Test Wi-Fi association without checking the AP against the managed inventory. A familiar WLAN name alone is a weak origin signal. The appropriate acceptance test is: Inspect client associations against known AP identities.

D:

Read the device signal bars and infer the open AP belongs to the conference operator. A familiar WLAN name alone is a weak origin signal. The appropriate acceptance test is: Inspect client associations against known AP identities.

Question 707

A network receives many forged-source packets that exhaust edge state tables. Which response MOST directly addresses the stated network problem or requirement?

  1. Permit forged-source packets through the Internet edge without ingress filters
  2. Expand stateful table timeouts to hold more spoofed half-open sessions indefinitely
  3. Apply ingress anti-spoofing and appropriate stateful resource controls
  4. Disable connection logging and assume the forged source-address exhaustion stops

Explanation

Correct Answer

C:

Source-address validation and volumetric rate control address different risks. A direct way to confirm the outcome is to send lawful spoofed-source traffic in lab and inspect drop counters.

Incorrect Answers

A:

Permit forged-source packets through the Internet edge without ingress filters. Source-address validation and volumetric rate control address different risks. This does not implement the needed approach: apply ingress anti-spoofing and appropriate stateful resource controls.

B:

Expand stateful table timeouts to hold more spoofed half-open sessions indefinitely. Source-address validation and volumetric rate control address different risks. This does not implement the needed approach: apply ingress anti-spoofing and appropriate stateful resource controls.

D:

Disable connection logging and assume the forged source-address exhaustion stops. Source-address validation and volumetric rate control address different risks. This does not implement the needed approach: apply ingress anti-spoofing and appropriate stateful resource controls.

Question 708

A network receives many forged-source packets that exhaust edge state tables. Which diagnostic or verification check MOST directly evaluates the expected network behavior in this situation?

  1. Count incoming traffic volume but never test anti-spoofing rule drops on bogus sources
  2. Read firewall memory utilization without tracing a controlled forged-source test
  3. Ping one real client and infer the edge state table cannot be exhausted by spoofed sessions
  4. Send lawful spoofed-source traffic in lab and inspect drop counters

Explanation

Correct Answer

D:

Source-address validation and volumetric rate control address different risks. The result of the remedy is checked directly: Send lawful spoofed-source traffic in lab and inspect drop counters.

Incorrect Answers

A:

Count incoming traffic volume but never test anti-spoofing rule drops on bogus sources. Source-address validation and volumetric rate control address different risks. The appropriate acceptance test is: Send lawful spoofed-source traffic in lab and inspect drop counters.

B:

Read firewall memory utilization without tracing a controlled forged-source test. Source-address validation and volumetric rate control address different risks. The appropriate acceptance test is: Send lawful spoofed-source traffic in lab and inspect drop counters.

C:

Ping one real client and infer the edge state table cannot be exhausted by spoofed sessions. Source-address validation and volumetric rate control address different risks. The appropriate acceptance test is: Send lawful spoofed-source traffic in lab and inspect drop counters.

Question 709

A suspicious server sends unsolicited gratuitous ARP for many hosts. Which response MOST directly addresses the stated network problem or requirement?

  1. Detect gratuitous ARP anomalies and correlate switch-source location
  2. Accept every gratuitous ARP update as proof the sender owns all announced IP addresses
  3. Disable ARP anomaly recording to prevent alerts from the suspicious server
  4. Change DNS zones while the same endpoint broadcasts unauthorized gateway MAC mappings

Explanation

Correct Answer

A:

Legitimate ARP announcements should not grant unrestricted gateway authority. A direct way to confirm the outcome is to compare observed ARP mappings before/after anomaly.

Incorrect Answers

B:

Accept every gratuitous ARP update as proof the sender owns all announced IP addresses. Legitimate ARP announcements should not grant unrestricted gateway authority. This does not implement the needed approach: detect gratuitous ARP anomalies and correlate switch-source location.

C:

Disable ARP anomaly recording to prevent alerts from the suspicious server. Legitimate ARP announcements should not grant unrestricted gateway authority. This does not implement the needed approach: detect gratuitous ARP anomalies and correlate switch-source location.

D:

Change DNS zones while the same endpoint broadcasts unauthorized gateway MAC mappings. Legitimate ARP announcements should not grant unrestricted gateway authority. This does not implement the needed approach: detect gratuitous ARP anomalies and correlate switch-source location.

Question 710

A suspicious server sends unsolicited gratuitous ARP for many hosts. Which diagnostic or verification check MOST directly evaluates the expected network behavior in this situation?

  1. Observe the server's IP address but never capture the gratuitous ARP source MAC
  2. Compare observed ARP mappings before/after anomaly
  3. Check a single neighbor table snapshot without comparing before and after abnormal updates
  4. Ping the affected default gateway while overlooking switch source port and ARP churn logs

Explanation

Correct Answer

B:

Legitimate ARP announcements should not grant unrestricted gateway authority. The result of the remedy is checked directly: Compare observed ARP mappings before/after anomaly.

Incorrect Answers

A:

Observe the server's IP address but never capture the gratuitous ARP source MAC. Legitimate ARP announcements should not grant unrestricted gateway authority. The appropriate acceptance test is: Compare observed ARP mappings before/after anomaly.

C:

Check a single neighbor table snapshot without comparing before and after abnormal updates. Legitimate ARP announcements should not grant unrestricted gateway authority. The appropriate acceptance test is: Compare observed ARP mappings before/after anomaly.

D:

Ping the affected default gateway while overlooking switch source port and ARP churn logs. Legitimate ARP announcements should not grant unrestricted gateway authority. The appropriate acceptance test is: Compare observed ARP mappings before/after anomaly.

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