A writing closet needs to support 20 APs and 110 wired endpoints. It has four strands of OM3 fiber to the network core 150 feet (45 m) away. The customer wants the links to the network core to support at least
10GbE. The customer also requires no loss in connectivity for the switches in the closet, even with the loss of one link.
The architect plans to recommend three 2930M 40G 8SR PoE+ switches, two 4-port SFP+ modules, and two SFP+ SR transceivers.
What should the architect change about the plan?

• A. Add one 4-port SFP+ module and one SFP+ SR transceiver.
• B. Change the two SFP+ SR transceivers to SFP+ LRM transceivers.
• C. Add three 10GbE direct attach cables (DACs) or three stacking cables.
• D. Add a stacking module for each switch and three stacking cables.

A customer requires new MCs for a large multi-site network with about 600 AP-345s and 30,000 wireless clients. The customer requires redundancy for the MCs with each MC being able to handle the full load in a failover situation. The network should be able to sustain the loss of a controller with stateful failover within seconds. It should be able to undergo software upgrades without downtime.
The architect has recommended two 7240XM MCs. The customer points out that 7220 MCs can support enough APs and wonders why the architect recommended the 7240XMs.
What should the architect explain?

• A. The 7240XMs MCs can support full CPSec tunnels with this number of APs, while the 7220 MCs cannot.
• B. The 7240XMs MCs have more advanced clustering and availability capabilities than the 7220s MCs.
• C. The 7240XMs MCs support 40GbE ports, which are desirable for future proofing.
• D. The 7240XMs MCs are required to support the large number of wireless clients in this network.

A stadium wants to deploy location-based services, including blue-dot wayfinding over a 200,000 square foot (18,580 sq. m) area. The customer also wants to enable targeted notifications when guests walk past particular areas. The customer has selected a 1 year subscription.
The exhibit shows the BOM that the architect created in Iris.
Which correction should the architect make?

• A. Add two Maps subscriptions
• B. Add another campaign subscription
• C. Change the campaign subscription to a Maps subscription
• D. Remove one Blue Dot Nav subscription

Case study
A customer needs a wireless network upgrade for 802.11ac and possibly an upgrade to the wired network. The customer requires dual-radio 802.11ac APs, each radio of which can support 4x4 MIMO at full feature set.
The customer has given architects this information about their wireless devices:
* 2700 IoT devices which will have only wireless connections; they support WPA2 with 802.1X
* 300 on each floor in 3 buildings with 3 floors each
* 5,400 users, who use devices such as laptops and smartphones
* 600 users on each floor in 3 buildings with 3 floors each
* 24 security cameras which will have only wireless connections; they support WPA2 with 802.1X and have a local power source
* 4 on floor 1 of each of the 3 buildings
* 2 on the other 6 floors
The architect also has collected information about the existing wired network.
The existing access layer switches support these features:
* 10/100/1000 edge ports
* PoE (802.3af)
* 1GbE fiber uplinks
The existing aggregation switches support these features:
* 1/10GbE fiber ports
* ARP tables up to 64,000
The customer has provided this figure that shows the existing cabling between floors and between buildings:

Each floor is about 100 feet (30 m) by 140 feet (43 m) with a 10 foot (3 m) ceiling. Interior walls are drywall.
The layout for each floor is similar to that shown below. CAT5e cable is extended to all areas.

The customer wants to have a wired upgrade as well. The customer has indicated some additional requirements for the wired network, including redundancy for all switch-to-switch links. The customer also wants to explore whether the aggregation layer in buildings can be eliminated.
What is one missing piece of information the architect should obtain from the customer before they design the solution and select new switches and their accessories?

• A. the percentage of time that employees use their wired connection
• B. the power rating on the fiber deployed between buildings
• C. the power requirements on the wireless security cameras
• D. the number of fiber strands for fiber runs