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| Section | Weight | Objectives |
|---|---|---|
| Mobility | 25% | - Site Tags - Validate mobility tunneling - Optimize client roaming - Design mobility groups |
| WLAN High Availability | 20% | - Design controller high availability - Design AP high availability |
| Wired and Wireless Infrastructure | 30% | - Design wireless bridging (mesh) - Physical infrastructure requirements - Design for data, voice, video, location - Logical infrastructure requirements - Design radio management - Design high-density wireless networks |
| Wireless Site Survey | 25% | - Planning tools and network metrics evaluation - Collect design requirements and evaluate constraints - Post-deployment site survey - Pre-deployment site survey - Layer 1 site survey analysis - Predictive site survey - Material attenuation and its design effects |
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NEW QUESTION # 82
What happens to an AP when a flex profile name is changed in a site tag?
Answer: C
Explanation:
On the Cisco Catalyst 9800 IOS XE WLC platform, the tag-based configuration model uses site tags to associate APs with specific profiles including a flex profile and an AP join profile. The site tag is a fundamental binding element -- when any component of a site tag is modified, including renaming the flex profile associated with that tag, the WLC treats this as a material configuration change requiring the AP to re-evaluate its operational parameters. Specifically, the AP must disconnect its existing DTLS (Datagram Transport Layer Security) control plane tunnel to the WLC and re-establish it. This DTLS session disconnect and rejoin cycle is equivalent to a full AP rejoin: CAPWAP discovery, DTLS handshake, join request, configuration download, and image verification. Client service is interrupted on the affected AP during this process.
NEW QUESTION # 83
An engineer is designing guest access where guest traffic from foreign controllers on the internal network must terminate in the DMZ. Which two requirements must the design satisfy? (Choose two.)
Answer: B,C
Explanation:
Auto-anchor guest tunneling requires that the guest WLAN be configured identically on both the foreign and anchor controllers (Option B) - the SSID, security settings, and WLAN ID must match, because the anchor applies its own policy to the tunneled session and a mismatch causes the client to be dropped or assigned incorrect policy. A mobility tunnel between the two controllers (Option D) is the transport that carries the guest traffic from the internal foreign controller to the DMZ anchor, allowing the client's data to bypass the internal network entirely and terminate on the DMZ segment. Controllers must be configured as mobility peers of each other, but they do not need to share a mobility group name for auto-anchor to function, and they explicitly do not need to be in the same Layer 2 VLAN - the whole point of the design is that the anchor sits in a separate, firewalled DMZ subnet. RF group leadership is unrelated to guest tunneling.
NEW QUESTION # 84
A network engineer must review the design for a Cisco wireless deployment at a hospital. The deployment will have two Cisco 9800 WLCs configured with SSO, one Cisco 9800 WLC joined to the SSO controllers using a mobility tunnel, and one Cisco 9800 WLC that will be used as a service/dev controller and not joined using a mobility tunnel. Which high availability option must be incorporated in the design to ensure that APs choose the service/dev controller last when trying to associate?
Answer: B
Explanation:
In Cisco's AP controller preference hierarchy, each AP can be configured with a primary, secondary, and tertiary controller designation. The AP will attempt to join controllers in this exact order: primary first, secondary second, and tertiary third. When no controllers from the preference list are available, the AP may fall back to any reachable controller through standard CAPWAP discovery. In this hospital deployment, the service/development controller must be the controller of last resort -- it should only receive AP associations when all other options are exhausted.
Configuring the service/dev controller as the tertiary controller in the APs' preference configuration ensures exactly this behavior:
APs will attempt the SSO pair (primary) first, then the third production WLC joined via mobility tunnel (secondary), and only then the service/dev controller (tertiary). This prevents development traffic from disrupting production service, and ensures production APs do not inadvertently join the service environment during partial outages.
NEW QUESTION # 85
An engineer is designing the wired infrastructure to support VoWLAN. Which QoS design should be applied to the switch ports connecting the APs?
Answer: C
Explanation:
In a centrally switched CAPWAP deployment, client traffic is encapsulated between the AP and the controller, and the AP copies the QoS marking from the inner client packet into the DSCP field of the outer CAPWAP header. If the switch port connecting the AP does not trust DSCP, the switch rewrites those markings to zero at ingress and every voice packet loses its priority treatment for the remainder of its journey across the wired network. Trusting DSCP on the AP- facing port preserves the marking end to end and allows the campus queueing policies to place voice into the priority queue. Trusting CoS is ineffective here because the AP-to-switch link is typically an access port carrying untagged frames with no 802.1p field to trust. Leaving the port untrusted or policing it aggressively strips or drops the very traffic the design is intended to protect, and omitting trust configuration on a switch that defaults to untrusted produces the same failure.
NEW QUESTION # 86
An engineer is designing a wireless network in a historic building that has large rooms and ornate wall coverings. Which approach must be considered first when placing access points?
Answer: A
Explanation:
When designing a wireless network for any environment, including a historic building with ornate wall coverings and aesthetic constraints, RF coverage must always be considered first when placing access points. RF coverage is the fundamental requirement -- without adequate signal strength throughout the space, no other design objective can be met. The engineer must first determine AP locations that provide the required signal strength and coverage to all areas before addressing aesthetics, overlap calculations, or interference mitigation. In a historic building specifically, the ornate wall coverings and dense construction materials may cause unexpected signal attenuation, making it even more important to model RF coverage before committing to AP positions.
NEW QUESTION # 87
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