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HP HPE7-A08 Practice Test 13

Question 120

A high-priority queue drains all other traffic at peak load. What should the engineer revisit?

  1. DSCP marking trust boundary
  2. Traffic-class inventory
  3. Rate limiting and policing policy
  4. Queue scheduling and reservation

Explanation

Correct Answer

D:

Queue scheduling must balance service guarantees and fairness. Set queue treatment so delay-sensitive traffic gets necessary service without starving other flows.

Incorrect Answers

A:

Define which edge sources may supply trusted DSCP markings and where packets are reclassified. But this does not address the case requirement to protect voice without starving best-effort applications.

B:

Identify critical flows, bandwidth, loss and delay needs before choosing marking rules. But this does not address the case requirement to protect voice without starving best-effort applications.

C:

Constrain a traffic class that could overwhelm a link while documenting intentional drops. But this does not address the case requirement to protect voice without starving best-effort applications.

Question 121

A change seems to fix audio but no baseline drops or link load were captured. What planning practice was omitted?

  1. Voice VLAN and device classification
  2. DSCP marking trust boundary
  3. Congestion visibility baseline
  4. Traffic-class inventory

Explanation

Correct Answer

C:

Prechange queue metrics enable credible comparison. Record utilization, drops and queue behavior before QoS changes to support comparisons.

Incorrect Answers

A:

Assign VoIP endpoints and separate voice traffic based on supported access design. But this does not address the case requirement to measure congestion and packet loss before tuning.

B:

Define which edge sources may supply trusted DSCP markings and where packets are reclassified. But this does not address the case requirement to measure congestion and packet loss before tuning.

D:

Identify critical flows, bandwidth, loss and delay needs before choosing marking rules. But this does not address the case requirement to measure congestion and packet loss before tuning.

Question 122

PCs and IP phones share ports but voice traffic needs separate policy. What classification plan should be documented?

  1. Congestion visibility baseline
  2. DSCP marking trust boundary
  3. Voice VLAN and device classification
  4. Traffic-class inventory

Explanation

Correct Answer

C:

Voice classification ties endpoint roles to VLAN and QoS treatment. Assign VoIP endpoints and separate voice traffic based on supported access design.

Incorrect Answers

A:

Record utilization, drops and queue behavior before QoS changes to support comparisons. But this does not address the case requirement to treat phones distinctly from attached data clients.

B:

Define which edge sources may supply trusted DSCP markings and where packets are reclassified. But this does not address the case requirement to treat phones distinctly from attached data clients.

D:

Identify critical flows, bandwidth, loss and delay needs before choosing marking rules. But this does not address the case requirement to treat phones distinctly from attached data clients.

Question 123

A backup application fills a WAN link during business hours and should be capped. What tool can enforce a bandwidth ceiling?

  1. Rate limiting and policing policy
  2. Traffic-class inventory
  3. Queue scheduling and reservation
  4. Congestion visibility baseline

Explanation

Correct Answer

A:

Rate policy can constrain excess traffic with known side effects. Constrain a traffic class that could overwhelm a link while documenting intentional drops.

Incorrect Answers

B:

Identify critical flows, bandwidth, loss and delay needs before choosing marking rules. But this does not address the case requirement to limit an aggressive class during congestion.

C:

Set queue treatment so delay-sensitive traffic gets necessary service without starving other flows. But this does not address the case requirement to limit an aggressive class during congestion.

D:

Record utilization, drops and queue behavior before QoS changes to support comparisons. But this does not address the case requirement to limit an aggressive class during congestion.

Question 124

An access switch trusts DSCP from a guest laptop and voice traffic suffers. What plan attribute is weak?

  1. Voice VLAN and device classification
  2. DSCP marking trust boundary
  3. Rate limiting and policing policy
  4. Queue scheduling and reservation

Explanation

Correct Answer

B:

Trust must match authenticated traffic sources. Define which edge sources may supply trusted DSCP markings and where packets are reclassified.

Incorrect Answers

A:

Assign VoIP endpoints and separate voice traffic based on supported access design. But this does not address the case requirement to prevent unauthorized prioritization by clients.

C:

Constrain a traffic class that could overwhelm a link while documenting intentional drops. But this does not address the case requirement to prevent unauthorized prioritization by clients.

D:

Set queue treatment so delay-sensitive traffic gets necessary service without starving other flows. But this does not address the case requirement to prevent unauthorized prioritization by clients.

Question 125

Voice packets queue behind large bulk transfers on a congested uplink. Which part of QoS design should be inspected?

  1. Rate limiting and policing policy
  2. Queue scheduling and reservation
  3. Voice VLAN and device classification
  4. Congestion visibility baseline

Explanation

Correct Answer

B:

Scheduling and queue mapping control congestion service. Set queue treatment so delay-sensitive traffic gets necessary service without starving other flows.

Incorrect Answers

A:

Constrain a traffic class that could overwhelm a link while documenting intentional drops. But this does not address the case requirement to reduce queueing delay for latency-sensitive packets.

C:

Assign VoIP endpoints and separate voice traffic based on supported access design. But this does not address the case requirement to reduce queueing delay for latency-sensitive packets.

D:

Record utilization, drops and queue behavior before QoS changes to support comparisons. But this does not address the case requirement to reduce queueing delay for latency-sensitive packets.

Question 126

A team tunes QoS after complaints but lacks a before-and-after loss figure. What measurement is needed?

  1. Rate limiting and policing policy
  2. Voice VLAN and device classification
  3. Queue scheduling and reservation
  4. Congestion visibility baseline

Explanation

Correct Answer

D:

A captured prechange congestion baseline supports diagnosis. Record utilization, drops and queue behavior before QoS changes to support comparisons.

Incorrect Answers

A:

Constrain a traffic class that could overwhelm a link while documenting intentional drops. But this does not address the case requirement to compare packet drops and queue counters across change.

B:

Assign VoIP endpoints and separate voice traffic based on supported access design. But this does not address the case requirement to compare packet drops and queue counters across change.

C:

Set queue treatment so delay-sensitive traffic gets necessary service without starving other flows. But this does not address the case requirement to compare packet drops and queue counters across change.

Question 127

A campus requires wired authentication to survive one RADIUS appliance outage. What part of the architecture must be specified?

  1. Management-plane hardening
  2. Security validation with least privilege
  3. AAA server and failover topology
  4. DHCP snooping and ARP protections

Explanation

Correct Answer

C:

Authentication redundancy and failure mode determine service resilience. Plan primary and backup identity services plus controlled behavior during RADIUS failure.

Incorrect Answers

A:

Protect administrative access with role-based privileges, trusted protocols and management reachability. But this does not address the case requirement to maintain controlled endpoint admission during server loss.

B:

Verify access from representative permitted and denied identities, not only admin accounts. But this does not address the case requirement to maintain controlled endpoint admission during server loss.

D:

Validate supported anti-spoofing mechanisms with accurate trusted-uplink choices. But this does not address the case requirement to maintain controlled endpoint admission during server loss.

Question 128

Most desktops run 802.1X but a medical infusion device has no supplicant. What plan should address the exception?

  1. AAA server and failover topology
  2. Security validation with least privilege
  3. DHCP snooping and ARP protections
  4. 802.1X and MAC-auth exception plan

Explanation

Correct Answer

D:

Controlled MAC-based fallback can be documented for non-supplicant devices. Use 802.1X where clients support it and narrowly govern devices requiring an alternative.

Incorrect Answers

A:

Plan primary and backup identity services plus controlled behavior during RADIUS failure. But this does not address the case requirement to onboard legacy devices without giving blanket open access.

B:

Verify access from representative permitted and denied identities, not only admin accounts. But this does not address the case requirement to onboard legacy devices without giving blanket open access.

C:

Validate supported anti-spoofing mechanisms with accurate trusted-uplink choices. But this does not address the case requirement to onboard legacy devices without giving blanket open access.

Question 129

Students must reach Internet but not payroll systems even though both VLANs route. What policy artifact is needed?

  1. Security validation with least privilege
  2. 802.1X and MAC-auth exception plan
  3. Management-plane hardening
  4. Segmentation boundary matrix

Explanation

Correct Answer

D:

An access matrix specifies allowed and denied intersegment flows. Document permitted flows among roles or VLANs and map enforcement to gateways and ports.

Incorrect Answers

A:

Verify access from representative permitted and denied identities, not only admin accounts. But this does not address the case requirement to enforce intended segmentation beyond VLAN separation.

B:

Use 802.1X where clients support it and narrowly govern devices requiring an alternative. But this does not address the case requirement to enforce intended segmentation beyond VLAN separation.

C:

Protect administrative access with role-based privileges, trusted protocols and management reachability. But this does not address the case requirement to enforce intended segmentation beyond VLAN separation.

Question 130

Operators currently use shared admin passwords over exposed networks. Which workstream is required?

  1. 802.1X and MAC-auth exception plan
  2. AAA server and failover topology
  3. Management-plane hardening
  4. DHCP snooping and ARP protections

Explanation

Correct Answer

C:

Administrative access and transport must be hardened. Protect administrative access with role-based privileges, trusted protocols and management reachability.

Incorrect Answers

A:

Use 802.1X where clients support it and narrowly govern devices requiring an alternative. But this does not address the case requirement to protect the control and management planes.

B:

Plan primary and backup identity services plus controlled behavior during RADIUS failure. But this does not address the case requirement to protect the control and management planes.

D:

Validate supported anti-spoofing mechanisms with accurate trusted-uplink choices. But this does not address the case requirement to protect the control and management planes.

HPE Network Switching Professional (HPE7-A08) Practice Tests

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