L2 and L3 Planning NETWORKING-DESIGN Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   In Layer 3 network planning, what is the primary purpose of using a hierarchical design model (e.g., core, distribution, access)?

   • ATo ensure that all devices are on the same subnet
   • BTo reduce the number of VLANs required in the network
   • CTo simplify management and improve scalability by separating functions into layers
   • DTo eliminate the need for access control lists
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2. 7expert · hard

   A company is designing a new network for a building with a large number of IoT devices. The IoT devices are on a separate VLAN. The network team is concerned about the impact of IoT broadcast traffic on the rest of the network. They are considering using VLANs and private VLANs (PVLANs). Which design approach best isolates IoT device traffic while still allowing them to communicate with a central management server?

   • AUse a private VLAN with a primary VLAN for the management server and secondary isolated VLANs for the IoT devices.
   • BPlace all IoT devices in a single VLAN and rely on the access switch to filter broadcast traffic.
   • CUse a separate VLAN for each IoT device to completely isolate them.
   • DDisable the IoT devices' ability to send broadcast traffic at the application layer.
   Reveal Solution Discussion Select an answer first
4. 8foundation · easy

   In Layer 2 network planning, what is the primary purpose of link aggregation (e.g., LACP)?

   • ATo segment the network into smaller broadcast domains
   • BTo increase bandwidth and provide link redundancy
   • CTo enable routing between different subnets
   • DTo provide security by isolating traffic between departments
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5. 9expert · hard

   A data center is designing a leaf-spine architecture. The network team wants to ensure that a failure of a single spine switch does not cause a prolonged outage. They are considering using Spanning Tree Protocol (STP) for redundancy. Which design decision is most critical to minimize the impact of a spine switch failure?

   • AEnable PortFast on all leaf switch ports connected to the spine.
   • BUse a routing protocol like BGP or OSPF instead of STP for redundancy.
   • CUse Multiple Spanning Tree Protocol (MSTP) to map multiple VLANs to different spanning tree instances.
   • DConfigure the spine switches as the root bridge for all VLANs.
   Reveal Solution Discussion Select an answer first
6. 10application · medium

   A company is designing a new network for a building with a mix of wired and wireless devices. The wireless network will use a separate VLAN from the wired network. The team wants to ensure that wireless users can access the internet but cannot access the wired network. Which Layer 2 design element is most important to achieve this?

   • APlace the wireless network in a separate VLAN but do not configure any routing between the VLANs.
   • BPlace the wireless network in the same VLAN as the wired network but use a different IP subnet.
   • CPlace the wireless VLAN in a separate broadcast domain and use access control lists to block traffic to the wired VLAN.
   • DPlace the wireless and wired networks in the same VLAN and rely on the wireless access point to filter traffic.
   Reveal Solution Discussion Select an answer first