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HP HPE7-A08 Practice Test 10

Question 90

A merger adds a site using the same CIDR block as headquarters. Which planning task should happen before routing is enabled?

  1. Default gateway placement
  2. Address overlap prevention
  3. IP summarization boundary
  4. DHCP scope and relay design

Explanation

Correct Answer

B:

Unique address planning or controlled translation is needed. Nonoverlapping network allocations avoid ambiguous forwarding and renumbering problems.

Incorrect Answers

A:

The endpoint must point to a reachable routed SVI or gateway address for off-subnet traffic. But this does not address the case requirement to avoid overlapping private prefixes across sites.

C:

Routing summarization can reduce advertised routes if blocks are contiguous and topology supports it. But this does not address the case requirement to avoid overlapping private prefixes across sites.

D:

Client address pools and relay destinations are required when the DHCP server is elsewhere. But this does not address the case requirement to avoid overlapping private prefixes across sites.

Question 91

A campus extends one VLAN over redundant uplinks and wants predictable root selection. What should the implementation plan identify?

  1. LACP bundle planning
  2. VLAN tagging continuity
  3. STP topology and root placement
  4. Layer 3 boundary reduction

Explanation

Correct Answer

C:

Spanning-tree topology and root bridge intent should be explicit. Deliberate STP root choice shapes redundant Layer 2 forwarding paths and loop protection.

Incorrect Answers

A:

LACP member ports must have compatible attributes and peer negotiation for reliable aggregation. But this does not address the case requirement to define the preferred Layer 2 forwarding root.

B:

Trunks must allow intended VLAN tags and agree on native or untagged handling. But this does not address the case requirement to define the preferred Layer 2 forwarding root.

D:

Routing nearer access reduces the number of devices participating in a single Layer 2 domain. But this does not address the case requirement to define the preferred Layer 2 forwarding root.

Question 92

Different VLAN sets should follow selected spanning trees without creating one tree per VLAN. Which technology is relevant?

  1. MSTP instance mapping
  2. Edge-port protection
  3. Layer 3 boundary reduction
  4. STP topology and root placement

Explanation

Correct Answer

A:

MSTP instances group VLANs under selected trees. Multiple spanning tree maps VLAN groups to instances so their trees can be coordinated.

Incorrect Answers

B:

BPDU guard or equivalent protections can disable an unexpected switching neighbor at a trusted edge. But this does not address the case requirement to map VLAN groups into spanning-tree instances.

C:

Routing nearer access reduces the number of devices participating in a single Layer 2 domain. But this does not address the case requirement to map VLAN groups into spanning-tree instances.

D:

Deliberate STP root choice shapes redundant Layer 2 forwarding paths and loop protection. But this does not address the case requirement to map VLAN groups into spanning-tree instances.

Question 93

Employees can unplug PCs and connect small unmanaged switches that inject BPDUs. What edge defense should be included?

  1. STP topology and root placement
  2. Edge-port protection
  3. MSTP instance mapping
  4. LACP bundle planning

Explanation

Correct Answer

B:

BPDU protection limits unexpected bridge attachment. BPDU guard or equivalent protections can disable an unexpected switching neighbor at a trusted edge.

Incorrect Answers

A:

Deliberate STP root choice shapes redundant Layer 2 forwarding paths and loop protection. But this does not address the case requirement to protect user-facing ports from unauthorized switch links.

C:

Multiple spanning tree maps VLAN groups to instances so their trees can be coordinated. But this does not address the case requirement to protect user-facing ports from unauthorized switch links.

D:

LACP member ports must have compatible attributes and peer negotiation for reliable aggregation. But this does not address the case requirement to protect user-facing ports from unauthorized switch links.

Question 94

Two uplinks will be combined but were configured with mismatched speed and allowed VLANs. What plan item matters?

  1. MSTP instance mapping
  2. LACP bundle planning
  3. VLAN tagging continuity
  4. Layer 3 boundary reduction

Explanation

Correct Answer

B:

LACP bundles require compatible member characteristics. LACP member ports must have compatible attributes and peer negotiation for reliable aggregation.

Incorrect Answers

A:

Multiple spanning tree maps VLAN groups to instances so their trees can be coordinated. But this does not address the case requirement to make aggregated member links consistent.

C:

Trunks must allow intended VLAN tags and agree on native or untagged handling. But this does not address the case requirement to make aggregated member links consistent.

D:

Routing nearer access reduces the number of devices participating in a single Layer 2 domain. But this does not address the case requirement to make aggregated member links consistent.

Question 95

VLAN 45 crosses three uplinks but an intermediate trunk omits it. What must the plan include?

  1. MSTP instance mapping
  2. STP topology and root placement
  3. VLAN tagging continuity
  4. Layer 3 boundary reduction

Explanation

Correct Answer

C:

Every transit trunk needs consistent authorized VLAN membership. Trunks must allow intended VLAN tags and agree on native or untagged handling.

Incorrect Answers

A:

Multiple spanning tree maps VLAN groups to instances so their trees can be coordinated. But this does not address the case requirement to carry intended 802.1Q traffic end to end.

B:

Deliberate STP root choice shapes redundant Layer 2 forwarding paths and loop protection. But this does not address the case requirement to carry intended 802.1Q traffic end to end.

D:

Routing nearer access reduces the number of devices participating in a single Layer 2 domain. But this does not address the case requirement to carry intended 802.1Q traffic end to end.

Question 96

Broadcast failure in one floor could affect the whole campus because VLANs are stretched everywhere. Which architecture improvement reduces blast radius?

  1. LACP bundle planning
  2. MSTP instance mapping
  3. Layer 3 boundary reduction
  4. VLAN tagging continuity

Explanation

Correct Answer

C:

Routed boundaries constrain Layer 2 flooding. Routing nearer access reduces the number of devices participating in a single Layer 2 domain.

Incorrect Answers

A:

LACP member ports must have compatible attributes and peer negotiation for reliable aggregation. But this does not address the case requirement to contain broadcast and topology-change scope.

B:

Multiple spanning tree maps VLAN groups to instances so their trees can be coordinated. But this does not address the case requirement to contain broadcast and topology-change scope.

D:

Trunks must allow intended VLAN tags and agree on native or untagged handling. But this does not address the case requirement to contain broadcast and topology-change scope.

Question 97

An access layer's redundant path blocks the wrong link because an unexpected bridge becomes root. What design element was likely omitted?

  1. STP topology and root placement
  2. Edge-port protection
  3. VLAN tagging continuity
  4. LACP bundle planning

Explanation

Correct Answer

A:

Root placement must be planned across switches. Deliberate STP root choice shapes redundant Layer 2 forwarding paths and loop protection.

Incorrect Answers

B:

BPDU guard or equivalent protections can disable an unexpected switching neighbor at a trusted edge. But this does not address the case requirement to stabilize intended spanning-tree topology.

C:

Trunks must allow intended VLAN tags and agree on native or untagged handling. But this does not address the case requirement to stabilize intended spanning-tree topology.

D:

LACP member ports must have compatible attributes and peer negotiation for reliable aggregation. But this does not address the case requirement to stabilize intended spanning-tree topology.

Question 98

A security VLAN works in one closet but disappears across the core trunk. What matrix should the engineer examine?

  1. LACP bundle planning
  2. VLAN tagging continuity
  3. Edge-port protection
  4. MSTP instance mapping

Explanation

Correct Answer

B:

A per-link VLAN allowance plan reveals omitted tags. Trunks must allow intended VLAN tags and agree on native or untagged handling.

Incorrect Answers

A:

LACP member ports must have compatible attributes and peer negotiation for reliable aggregation. But this does not address the case requirement to verify VLAN transit along the whole path.

C:

BPDU guard or equivalent protections can disable an unexpected switching neighbor at a trusted edge. But this does not address the case requirement to verify VLAN transit along the whole path.

D:

Multiple spanning tree maps VLAN groups to instances so their trees can be coordinated. But this does not address the case requirement to verify VLAN transit along the whole path.

Question 99

A user-facing port unexpectedly receives switch-control BPDUs. What protection is suited to that port role?

  1. Edge-port protection
  2. LACP bundle planning
  3. STP topology and root placement
  4. Layer 3 boundary reduction

Explanation

Correct Answer

A:

Edge BPDU protection detects unauthorized switching endpoints. BPDU guard or equivalent protections can disable an unexpected switching neighbor at a trusted edge.

Incorrect Answers

B:

LACP member ports must have compatible attributes and peer negotiation for reliable aggregation. But this does not address the case requirement to prevent an accidental loop through user access.

C:

Deliberate STP root choice shapes redundant Layer 2 forwarding paths and loop protection. But this does not address the case requirement to prevent an accidental loop through user access.

D:

Routing nearer access reduces the number of devices participating in a single Layer 2 domain. But this does not address the case requirement to prevent an accidental loop through user access.

Question 100

Two distribution switches need dynamic route exchange with consistent peer parameters. What routing-plan component is essential?

  1. OSPF adjacency planning
  2. VRRP first-hop redundancy
  3. Equal-cost multipath
  4. Static default route design

Explanation

Correct Answer

A:

OSPF neighbor attributes must be designed and validated. Area IDs, interface addressing, authentication and network type must align for intended OSPF neighbors.

Incorrect Answers

B:

VRRP can supply a resilient virtual default gateway where supported and configured. But this does not address the case requirement to form supported dynamic routing adjacencies.

C:

ECMP can use multiple equal-cost routing paths when platform and topology permit. But this does not address the case requirement to form supported dynamic routing adjacencies.

D:

A static default points unknown destinations toward a reachable next hop for simple topologies. But this does not address the case requirement to form supported dynamic routing adjacencies.

HPE Network Switching Professional (HPE7-A08) Practice Tests

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