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| Section | Weight | Objectives |
|---|---|---|
| WAN for Enterprise Networks | 20% | - Design QoS for WAN - Design SD-WAN solution - Design WAN connectivity |
| Advanced Enterprise Campus Networks | 25% | - Design for high availability - Design Layer 2 and Layer 3 campus networks - Design campus network services (QoS, multicast, etc.) |
| Services | 10% | - Design network management - Design end-to-end QoS policy |
| Enterprise Campus Security | 20% | - Design network access control - Design network security |
| Advanced Addressing and Routing Solutions | 25% | - Create stable, secure, and scalable routing designs for Layer 3 - Determine IPv6 migration strategy - Create structured addressing designs |
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NEW QUESTION # 338
Which QoS feature responds to network congestion by dropping lower priority packets?
Answer: C
Explanation:
WRED can selectively discard lower priority traffic when the interface begins to get congested and provide differentiated performance characteristics for different classes of service.
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/qos_conavd/configuration/15-mt/qos-conavd-15-mt-book/qos-conavd-oview.html#:~:text=WRED%20can%20selectively%20discard%20lower,for%20different%20class es%20of%20service.
NEW QUESTION # 339
Which two functions does the control plane node provide in a Cisco SD-Access architecture? (Choose two.)
Answer: C,E
Explanation:
The Cisco SD-Access control-plane node provides the host tracking database and map-server function. SD- Access uses LISP-based control-plane behavior to separate endpoint identity from endpoint location. Fabric edge nodes register endpoints with the control-plane node, and the control-plane node maintains the endpoint- to-location database. When a fabric node needs to forward traffic to an endpoint, it queries the control-plane node so the destination endpoint can be resolved to the correct fabric location. In LISP terminology, this maps to the map-server and map-resolver role, while the SD-Access design discussion often refers to the endpoint database or host tracking database. The control-plane node does not enforce policy mapping by itself; policy is integrated with Cisco ISE and applied through scalable group policy in the fabric. It also does not function as a proxy ETR in this option set. Endpoint registration is initiated by the edge nodes, which detect local endpoints and inform the control plane. Therefore, host tracking database and map server are the correct functions. Reference topics: SD-Access control plane, LISP map server, host tracking database, EID-to- RLOC mapping.
NEW QUESTION # 340
In what mode does an LWAPP-enabled access point operate?
Answer: C
Explanation:
Lightweight access point protocol (LWAPP)-enabled access points operate in lightweight mode. LWAPP is a protocol used to allow centralized management of APs. The management components are removed from the APs, and a WLAN controller provides a single point of management. This controller coordinates WLAN access, managing the load on the APs and user movement between APs. Upon starting, an LWAPP-enabled access point must obtain an IP address. It can then discover the controller using DHCP, DNS, or a subnet broadcast. When multiple wireless controllers are detected by an AP, it chooses to associate with the controller that has the fewest existing associated APs.
Individually configured APs that operate without central management are operating in autonomous mode. This would be the opposite of lightweight mode, which is made possible by LWAPP. Autonomous access points can be upgraded to lightweight. If they are upgraded, they will only function in conjunction with a WLAN controller.
Moreover, when an autonomous access point is upgraded to lightweight, the console port only provides read access to the unit.
Characteristics that autonomous and lightweight access points have in common:
Both support Power over Ethernet (PoE)
Both can use a Cisco Secure Access Control server (ACS) for security
A wireless gateway bridge (WGB) is used to connect a computer without a wireless network card to a wireless network, but not separate WLANs. The WGB can connect up to eight computers to a WLAN. The WGB connects to the root AP through a wireless interface.
Ad hoc is a WLAN mode used for peer-to-peer connectivity. Ad hoc mode allows wireless-enabled computers to communicate with each other without having an AP involved.
Objective:
Layer 2 Technologies
Sub-Objective:
Configure and verify other LAN switching technologies
References:
Cisco > Support > Product Support > Wireless > Cisco Aironet 1200 Series > Reference Guides > Technical References > Upgrading Autonomous Cisco Aironet Access Points to Lightweight Mode Cisco > Support > Technology Support > Wireless/Mobility > Wireless, LAN (WLAN) > Design > Design Technotes > Cisco Wireless Devices Association Matrix
NEW QUESTION # 341
The customer solution requires QoS to support streaming multimedia over a WAN. An architect chooses to use Per-Hop Behavior. Which solution should the engineer use to of mark traffic traveling between branch sites?
Answer: D
Explanation:
For streaming multimedia over a WAN using DiffServ per-hop behavior, the best answer is CBWFQ with DSCP AF3. Cisco QoS design separates real-time interactive voice from streaming multimedia. Voice bearer traffic commonly uses EF and a strict priority queue because it is extremely sensitive to delay and jitter.
Streaming multimedia, however, is usually buffered and bandwidth-intensive; it should receive assured bandwidth and controlled drop behavior rather than strict priority treatment. The Assured Forwarding classes are designed for this kind of preferential forwarding within DiffServ. AF3 is commonly associated with multimedia streaming in Cisco QoS baseline models, while CBWFQ provides bandwidth guarantees without allowing the class to starve other traffic. LLQ with EF is too aggressive for streaming multimedia and should be reserved for voice bearer traffic or similarly strict real-time flows. AF2 is more commonly used for transactional data or lower-priority assured service, depending on the model. The correct marking and queuing design is therefore CBWFQ with DSCP AF3. Reference topics: DiffServ, per-hop behavior, CBWFQ, DSCP AF classes, multimedia streaming QoS.
NEW QUESTION # 342
Which feature provides the capability for intra-VN traffic filtering and control within the Cisco SO-Access architecture?
Answer: B
NEW QUESTION # 343
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