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Exam Code: N10-009
Exam Name: CompTIA Network+
Certification Provider: CompTIA
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CompTIA Network+ N10-009 Practice Test 3

Question 20

A branch has many same-subnet clients and needs efficient local Ethernet forwarding. Which diagnostic or verification check MOST directly evaluates the expected network behavior in this situation?

  1. Confirm the uplink router responds while local MAC-based forwarding remains untested
  2. Inspect only the switch port count and infer actual frames reach the intended local destinations
  3. Observe one workstation transmit without checking concurrent forwarding to other same-subnet ports
  4. Check MAC learning and simultaneous local frame forwarding

Explanation

Correct Answer

D:

Switching is destination-MAC forwarding rather than default-gateway routing. The result of the remedy is checked directly: Check MAC learning and simultaneous local frame forwarding.

Incorrect Answers

A:

Confirm the uplink router responds while local MAC-based forwarding remains untested. Switching is destination-MAC forwarding rather than default-gateway routing. The appropriate acceptance test is: Check MAC learning and simultaneous local frame forwarding.

B:

Inspect only the switch port count and infer actual frames reach the intended local destinations. Switching is destination-MAC forwarding rather than default-gateway routing. The appropriate acceptance test is: Check MAC learning and simultaneous local frame forwarding.

C:

Observe one workstation transmit without checking concurrent forwarding to other same-subnet ports. Switching is destination-MAC forwarding rather than default-gateway routing. The appropriate acceptance test is: Check MAC learning and simultaneous local frame forwarding.

Question 21

An exposed service requires stateful policy by source and destination zone. Which response MOST directly addresses the stated network problem or requirement?

  1. Apply a stateful firewall that tracks session context
  2. Use a stateless permit-all ACL and claim return traffic is session-aware
  3. Make the internal application server decide which network zones may initiate firewall sessions
  4. Disable connection tracking so unsolicited inbound packets appear to be responses

Explanation

Correct Answer

A:

Stateful filtering remembers flows unlike a simple stateless rule list. A direct way to confirm the outcome is to test permitted return flows and unsolicited inbound attempts.

Incorrect Answers

B:

Use a stateless permit-all ACL and claim return traffic is session-aware. Stateful filtering remembers flows unlike a simple stateless rule list. This does not implement the needed approach: apply a stateful firewall that tracks session context.

C:

Make the internal application server decide which network zones may initiate firewall sessions. Stateful filtering remembers flows unlike a simple stateless rule list. This does not implement the needed approach: apply a stateful firewall that tracks session context.

D:

Disable connection tracking so unsolicited inbound packets appear to be responses. Stateful filtering remembers flows unlike a simple stateless rule list. This does not implement the needed approach: apply a stateful firewall that tracks session context.

Question 22

An exposed service requires stateful policy by source and destination zone. Which diagnostic or verification check MOST directly evaluates the expected network behavior in this situation?

  1. Test only an allowed outbound SYN without observing corresponding stateful return handling
  2. Test permitted return flows and unsolicited inbound attempts
  3. Verify the firewall is powered on but never send an unsolicited inbound attempt
  4. Read a rule description while ignoring actual session-table entries and direction-specific enforcement

Explanation

Correct Answer

B:

Stateful filtering remembers flows unlike a simple stateless rule list. The result of the remedy is checked directly: Test permitted return flows and unsolicited inbound attempts.

Incorrect Answers

A:

Test only an allowed outbound SYN without observing corresponding stateful return handling. Stateful filtering remembers flows unlike a simple stateless rule list. The appropriate acceptance test is: Test permitted return flows and unsolicited inbound attempts.

C:

Verify the firewall is powered on but never send an unsolicited inbound attempt. Stateful filtering remembers flows unlike a simple stateless rule list. The appropriate acceptance test is: Test permitted return flows and unsolicited inbound attempts.

D:

Read a rule description while ignoring actual session-table entries and direction-specific enforcement. Stateful filtering remembers flows unlike a simple stateless rule list. The appropriate acceptance test is: Test permitted return flows and unsolicited inbound attempts.

Question 23

A security team wants alerts about malicious scans without automatic traffic blocking. Which response MOST directly addresses the stated network problem or requirement?

  1. Deploy an inline IPS that silently drops scans although the team requested alerts only
  2. Turn off inspection and depend solely on firewall permit logs for malicious-signature alerts
  3. Place an IDS at a suitable monitored visibility point
  4. Install endpoint anti-malware with no visibility into the required network scan traffic

Explanation

Correct Answer

C:

IDS observation differs from inline IPS enforcement. A direct way to confirm the outcome is to replay approved suspicious signatures and confirm alerts without enforced drop.

Incorrect Answers

A:

Deploy an inline IPS that silently drops scans although the team requested alerts only. IDS observation differs from inline IPS enforcement. This does not implement the needed approach: place an IDS at a suitable monitored visibility point.

B:

Turn off inspection and depend solely on firewall permit logs for malicious-signature alerts. IDS observation differs from inline IPS enforcement. This does not implement the needed approach: place an IDS at a suitable monitored visibility point.

D:

Install endpoint anti-malware with no visibility into the required network scan traffic. IDS observation differs from inline IPS enforcement. This does not implement the needed approach: place an IDS at a suitable monitored visibility point.

Question 24

A security team wants alerts about malicious scans without automatic traffic blocking. Which diagnostic or verification check MOST directly evaluates the expected network behavior in this situation?

  1. Confirm a blocked connection occurred and call that proof of passive alert-only operation
  2. Inspect IDS licensing but never replay an authorized detectable signature
  3. Check dashboard reachability without verifying an alert was created and no traffic was dropped
  4. Replay approved suspicious signatures and confirm alerts without enforced drop

Explanation

Correct Answer

D:

IDS observation differs from inline IPS enforcement. The result of the remedy is checked directly: Replay approved suspicious signatures and confirm alerts without enforced drop.

Incorrect Answers

A:

Confirm a blocked connection occurred and call that proof of passive alert-only operation. IDS observation differs from inline IPS enforcement. The appropriate acceptance test is: Replay approved suspicious signatures and confirm alerts without enforced drop.

B:

Inspect IDS licensing but never replay an authorized detectable signature. IDS observation differs from inline IPS enforcement. The appropriate acceptance test is: Replay approved suspicious signatures and confirm alerts without enforced drop.

C:

Check dashboard reachability without verifying an alert was created and no traffic was dropped. IDS observation differs from inline IPS enforcement. The appropriate acceptance test is: Replay approved suspicious signatures and confirm alerts without enforced drop.

Question 25

A regulated segment must automatically reject a known exploit pattern. Which response MOST directly addresses the stated network problem or requirement?

  1. Deploy a suitably positioned inline IPS with change controls
  2. Place a passive IDS outside the traffic path and rely on it to block exploits automatically
  3. Write a dashboard-only signature rule while allowing the matching packets through
  4. Leave the IPS in detect-only mode despite the requirement to reject matching traffic

Explanation

Correct Answer

A:

Prevention requires enforcement, not just passive packet capture. A direct way to confirm the outcome is to send a harmless authorized test signature and verify the expected drop log.

Incorrect Answers

B:

Place a passive IDS outside the traffic path and rely on it to block exploits automatically. Prevention requires enforcement, not just passive packet capture. This does not implement the needed approach: deploy a suitably positioned inline IPS with change controls.

C:

Write a dashboard-only signature rule while allowing the matching packets through. Prevention requires enforcement, not just passive packet capture. This does not implement the needed approach: deploy a suitably positioned inline IPS with change controls.

D:

Leave the IPS in detect-only mode despite the requirement to reject matching traffic. Prevention requires enforcement, not just passive packet capture. This does not implement the needed approach: deploy a suitably positioned inline IPS with change controls.

Question 26

A regulated segment must automatically reject a known exploit pattern. Which diagnostic or verification check MOST directly evaluates the expected network behavior in this situation?

  1. Count generated alerts without confirming that any known exploit-pattern packet was dropped
  2. Send a harmless authorized test signature and verify the expected drop log
  3. Check a passive span capture but not inline IPS policy enforcement
  4. Verify an unrelated port scan is logged instead of replaying the approved detection signature safely

Explanation

Correct Answer

B:

Prevention requires enforcement, not just passive packet capture. The result of the remedy is checked directly: Send a harmless authorized test signature and verify the expected drop log.

Incorrect Answers

A:

Count generated alerts without confirming that any known exploit-pattern packet was dropped. Prevention requires enforcement, not just passive packet capture. The appropriate acceptance test is: Send a harmless authorized test signature and verify the expected drop log.

C:

Check a passive span capture but not inline IPS policy enforcement. Prevention requires enforcement, not just passive packet capture. The appropriate acceptance test is: Send a harmless authorized test signature and verify the expected drop log.

D:

Verify an unrelated port scan is logged instead of replaying the approved detection signature safely. Prevention requires enforcement, not just passive packet capture. The appropriate acceptance test is: Send a harmless authorized test signature and verify the expected drop log.

Question 27

A web cluster's requests must spread across healthy application instances. Which response MOST directly addresses the stated network problem or requirement?

  1. Distribute traffic round-robin to failed backends with no health checking
  2. Pin all new sessions to a single unhealthy instance instead of the healthy pool
  3. Configure a health-aware load balancer with monitored backends
  4. Use static DNS-only failover and assume it removes dead servers from every active balancing decision

Explanation

Correct Answer

C:

Balancing concerns application delivery and health, not IP route aggregation. A direct way to confirm the outcome is to drain one unhealthy node and check new traffic placement.

Incorrect Answers

A:

Distribute traffic round-robin to failed backends with no health checking. Balancing concerns application delivery and health, not IP route aggregation. This does not implement the needed approach: configure a health-aware load balancer with monitored backends.

B:

Pin all new sessions to a single unhealthy instance instead of the healthy pool. Balancing concerns application delivery and health, not IP route aggregation. This does not implement the needed approach: configure a health-aware load balancer with monitored backends.

D:

Use static DNS-only failover and assume it removes dead servers from every active balancing decision. Balancing concerns application delivery and health, not IP route aggregation. This does not implement the needed approach: configure a health-aware load balancer with monitored backends.

Question 28

A web cluster's requests must spread across healthy application instances. Which diagnostic or verification check MOST directly evaluates the expected network behavior in this situation?

  1. Read the load balancer's listener status without draining the failed application node
  2. Observe total pool membership but not actual distribution of new requests to healthy hosts
  3. Ping a backend switch port and infer that the application health-aware routing changed
  4. Drain one unhealthy node and check new traffic placement

Explanation

Correct Answer

D:

Balancing concerns application delivery and health, not IP route aggregation. The result of the remedy is checked directly: Drain one unhealthy node and check new traffic placement.

Incorrect Answers

A:

Read the load balancer's listener status without draining the failed application node. Balancing concerns application delivery and health, not IP route aggregation. The appropriate acceptance test is: Drain one unhealthy node and check new traffic placement.

B:

Observe total pool membership but not actual distribution of new requests to healthy hosts. Balancing concerns application delivery and health, not IP route aggregation. The appropriate acceptance test is: Drain one unhealthy node and check new traffic placement.

C:

Ping a backend switch port and infer that the application health-aware routing changed. Balancing concerns application delivery and health, not IP route aggregation. The appropriate acceptance test is: Drain one unhealthy node and check new traffic placement.

Question 29

A company needs to control outbound HTTP destinations and cache web resources. Which response MOST directly addresses the stated network problem or requirement?

  1. Use a forward proxy with explicit egress policy
  2. Use basic address translation as a replacement for application-aware HTTP egress policy
  3. Configure a transparent forward proxy that permits every blocked destination indiscriminately
  4. Enforce URL policy only on inbound servers rather than employees' outbound requests

Explanation

Correct Answer

A:

Application proxy policy differs from generic IP masquerading. A direct way to confirm the outcome is to verify blocked destination requests and cache-hit response headers.

Incorrect Answers

B:

Use basic address translation as a replacement for application-aware HTTP egress policy. Application proxy policy differs from generic IP masquerading. This does not implement the needed approach: use a forward proxy with explicit egress policy.

C:

Configure a transparent forward proxy that permits every blocked destination indiscriminately. Application proxy policy differs from generic IP masquerading. This does not implement the needed approach: use a forward proxy with explicit egress policy.

D:

Enforce URL policy only on inbound servers rather than employees' outbound requests. Application proxy policy differs from generic IP masquerading. This does not implement the needed approach: use a forward proxy with explicit egress policy.

Question 30

A company needs to control outbound HTTP destinations and cache web resources. Which diagnostic or verification check MOST directly evaluates the expected network behavior in this situation?

  1. Show outbound IP connectivity while prohibited HTTP destination requests still succeed
  2. Verify blocked destination requests and cache-hit response headers
  3. Read the proxy's configured cache size but never observe a real cache hit
  4. Test a website on the allowlist without confirming a denied site is blocked by the policy

Explanation

Correct Answer

B:

Application proxy policy differs from generic IP masquerading. The result of the remedy is checked directly: Verify blocked destination requests and cache-hit response headers.

Incorrect Answers

A:

Show outbound IP connectivity while prohibited HTTP destination requests still succeed. Application proxy policy differs from generic IP masquerading. The appropriate acceptance test is: Verify blocked destination requests and cache-hit response headers.

C:

Read the proxy's configured cache size but never observe a real cache hit. Application proxy policy differs from generic IP masquerading. The appropriate acceptance test is: Verify blocked destination requests and cache-hit response headers.

D:

Test a website on the allowlist without confirming a denied site is blocked by the policy. Application proxy policy differs from generic IP masquerading. The appropriate acceptance test is: Verify blocked destination requests and cache-hit response headers.

CompTIA Network+ (N10-009) Practice Tests

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