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Cisco 300-110 Exam Syllabus Topics:

Section	Weight	Objectives
Wireless Infrastructure Design	30%	- Wireless Controller architecture and deployment 1. AP modes and deployment options 2. Redundancy and high availability design 3. Controller models and scalability - Wired-wireless integration design 1. Switching infrastructure requirements 2. VLAN and QoS design 3. PoE and power planning - High-density wireless design 1. Channel planning and power management 2. Capacity optimization techniques 3. Co-channel interference mitigation
Mobility Design	25%	- Guest mobility and BYOD design - Roaming optimization 1. Fast Secure Roaming 2. 802.11r/k/v standards implementation - Mobility architecture models 1. Mobility groups and domains 2. Layer 2 and Layer 3 roaming 3. Anchor and foreign controller design
Wireless Site Survey	25%	- Design requirements collection and constraint evaluation 1. AP and antenna type selection 2. Deployment type considerations 3. Client density and capacity planning 4. Security requirements definition 5. Real-time application requirements - RF propagation and attenuation analysis - Pre-deployment survey and validation - Layer 1 site survey execution and analysis
WLAN High Availability and Security Design	20%	- Management and monitoring design - High availability design 1. N+1 and N+N redundancy models 2. Controller failover and stateful switchover 3. AP redundancy and resiliency - Security architecture design 1. Wireless intrusion prevention design 2. Authentication and authorization frameworks 3. Encryption and privacy mechanisms

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Cisco Designing Cisco Wireless Networks Sample Questions (Q120-Q125):

NEW QUESTION # 120
How are mobility groups created, excluding mobility anchors?

A. Each WLC must use the same mobility domain name and be defined as a peer in each other ' s static mobility members list.
B. The WLCs do not have to be of the same model or type to be a member of a mobility group, however each member should be running different software versions.
C. A mobility group does not require all WLCs in the group to use the same virtual IP address.
D. If WLCs with HA SSO are deployed, each WLC in the WLC HA pair is considered separately as a mobility peer.

Answer: A

Explanation:
Mobility groups are created by configuring each Wireless LAN Controller (WLC) to use the same mobility domain name (mobility group name) and defining each WLC as a peer in the static mobility members list of every other WLC in the group. This bidirectional configuration establishes the trusted peer relationship and enables WLCs to exchange client information, security credentials, and state data for seamless roaming. The same mobility group name on all WLCs creates a shared identity; the static peer list defines which controllers are trusted mobility partners and provides their management IP addresses and MAC addresses for tunnel establishment. Option A is incorrect because members should run compatible (ideally the same) software versions, not different ones. Option B is incorrect - all WLCs in a mobility group must use the same virtual IP address for proper roaming. Option D is incorrect - in an HA SSO pair, the pair presents as a single logical mobility entity, not as two separate peers. Reference: WLSD Study Guide - Mobility Group Configuration, Peer Configuration Requirements, Mobility Domain Architecture.

NEW QUESTION # 121
An engineer is performing an AP-on-a-stick survey and finds that the 5 GHz channel overlap is too high when an appropriate number of APs are used for the density requirements. Which two actions during the survey reduce channel overlap? (Choose two.)

A. Raise the minimum data rate to 24 Mbps.
B. Allow the use of UNII-2e channels.
C. Increase AP transmit power to improve the SNR.
D. Use directional antennas to limit the coverage area of some APs.
E. Enable power saving mode.

Answer: A,D

Explanation:
Raising the minimum data rate to 24 Mbps reduces the effective coverage range of each AP because clients at the cell edge operating at low data rates are effectively excluded from the cell.
This shrinks cell size, reducing channel overlap between neighboring APs on the same channel.
Using directional antennas limits the coverage area of some APs by focusing RF energy in specific directions rather than radiating omnidirectionally, which directly reduces the lateral overlap between adjacent APs.

NEW QUESTION # 122
An engineer is upgrading the legacy APs to 802.11ac Wave 2 capable APs. The existing gigabit uplinked switches provide 802.3at. Which switch limitation is a concern?

A. high availability
B. interface throughput
C. collision domains
D. output power

Answer: D

Explanation:
The primary concern when upgrading to 802.11ac Wave 2 capable APs with existing switches that only provide IEEE 802.3at (PoE+, 30W maximum) is the output power limitation. 802.11ac Wave 2 APs, particularly Cisco ' s 3800 and 4800 series, can require significantly more power than 30W to operate all radios and capabilities at full capacity. The Wave 2 standard introduced features such as Multi-User MIMO (MU-MIMO), beamforming, and additional spatial streams, all of which increase power consumption. When an AP doesn ' t receive sufficient power, it may reduce transmit power, disable radios, or reduce the number of spatial streams - directly degrading wireless performance. Interface throughput (Option A) may also be a concern with multi-gigabit capable APs, but the question specifically asks about the limitation introduced by
802.3at, which is directly a power delivery constraint. Collision domains (Option C) and high availability (Option B) are unrelated to the PoE standard. Reference: WLSD Study Guide - PoE Upgrade Planning,
802.11ac Wave 2 Infrastructure Requirements, Switch Power Budget Considerations.

NEW QUESTION # 123
An educational organization recently deployed an anchored WLAN and has a high number of client connections at any given time that stream video. The wireless infrastructure includes two Cisco 9800 WLCs.
To prevent web traffic being slow, an engineer must configure the deployment to prevent excessive fragmentation of the client data. Which configuration must the engineer apply?

A. Increase the MTU on both controllers.
B. Set the do not fragment bit on the mobility tunnel.
C. Adjust the TCP MSS value below the fragmentation point.
D. Set the MTU on both controllers to match.

Answer: C

Explanation:
In an anchored WLAN deployment, client traffic is encapsulated within CAPWAP mobility tunnels between the foreign WLC (where the AP joins) and the anchor WLC (in the DMZ or designated network segment).
This tunneling adds encapsulation overhead - CAPWAP/mobility tunnel headers consume a portion of the available MTU on the transport path. When video streaming clients generate large TCP segments, these segments may exceed the effective MTU of the mobility tunnel path, causing IP fragmentation at the WLC or along the path to the anchor. Fragmentation significantly degrades throughput and increases CPU overhead for high-volume video traffic. The correct solution is TCP MSS Clamping - reducing the Maximum Segment Size value advertised in TCP SYN packets so that TCP endpoints negotiate a segment size remaining below the fragmentation threshold. The Cisco 9800 WLC supports TCP MSS adjustment, which intercepts TCP handshake packets and rewrites the MSS option to a value accounting for CAPWAP tunnel overhead. Setting matching MTUs (Option A) does not prevent fragmentation if the effective tunnel MTU is lower than the client segment size. Increasing the MTU (Option B) is often constrained by physical infrastructure. Setting the DF bit (Option D) would cause packets to be dropped rather than fragmented.
Reference: WLSD Study Guide - Anchored WLAN Design, CAPWAP Mobility Tunnel MTU, TCP MSS Clamping.

NEW QUESTION # 124
An engineer must perform a predictive wireless survey to indicate the number of access points required. The engineer has created a new project and imported the floor plan. Which step must be taken next for accurate AP placement?

A. Analyze the network.
B. Place the access points.
C. Identify the coverage area.
D. Set the scale.

Answer: D

Explanation:
After creating a new predictive survey project and importing the floor plan, the next mandatory step is to set the scale of the floor plan. Setting the scale is critical because all subsequent measurements - AP coverage radius, cell overlap calculations, and distance-based attenuation modeling - depend on the accuracy of the floor plan ' s physical dimensions. If the scale is incorrect, the predictive model will place APs at incorrect distances relative to each other and produce inaccurate coverage predictions. The scale is typically set by the engineer clicking on two known points on the floor plan and entering the real-world distance between them, calibrating the software ' s measurement system. Analyzing the network (Option A) and placing APs (Option C) come after the scale is established. Identifying the coverage area (Option B) is often done simultaneously with scale setting or immediately after. Setting the scale first ensures all subsequent work is based on accurate physical dimensions. Reference: WLSD Study Guide - Ekahau Predictive Survey Workflow, Floor Plan Import and Scale Setting, Pre-Deployment Survey Methodology.

NEW QUESTION # 125
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