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| Section | Objectives |
|---|---|
| WAN and Edge Connectivity Design | - SD-WAN architecture and design considerations - Traditional WAN and internet edge design |
| Security Design in Enterprise Networks | - Segmentation and access control design - VPN and perimeter security architecture |
| Enterprise Network Design Principles | - Design methodologies and best practices - Scalability and high availability design |
| Network Automation and Programmability | - API-driven network automation concepts - Controller-based networking design |
| Enterprise Campus Network Design | - Spine-leaf and hierarchical design models - Campus LAN architecture |
| Network Services Design | - Routing protocols design (OSPF, EIGRP, BGP) - Multicast and QoS design considerations |
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NEW QUESTION # 120
A customer's current Layer 2 infrastructure is running Spanning Tree 802.1d, and all configuration changes are manually implemented on each switch. An architect must redesign the Layer 2 domain to achieve these goals:
reduce the impact of topology changes
reduce the time spent on network administration
reduce manual configuration errors
Which two solutions should the architect include in the new design? (Choose two.)
Answer: B,C
NEW QUESTION # 121
Since installing a cisco TelePresence system, the company is experiencing other application having response issues when the system in use. As a result, the company asked an architect to recommend a QoS solution. The customer is currently using a CBWFQ policy to manage traffic on an internet connection with a speed of 100 Mbps. Which link-capacity limit must the architect choose for strict-priority for the real-time traffic?
Answer: B
Explanation:
Cisco Technical Marketing testing has shown a significant decrease in data application response times when real-time traffic exceeds one-third of a link's bandwidth capacity. Extensive testing and customer deployments have shown that a general best queuing practice is to limit the amount of strict-priority queuing to 33 percent of a link's capacity. This strict-priority queuing rule is a conservative and safe design ratio for merging real-time applications with data applications.
https://www.ciscopress.com/articles/article.asp?p=357102&seqNum=7
NEW QUESTION # 122
Since installing a cisco TelePresence system, the company is experiencing other application having response issues when the system in use. As a result, the company asked an architect to recommend a QoS solution. The customer is currently using a CBWFQ policy to manage traffic on an internet connection with a speed of 100 Mbps. Which link-capacity limit must the architect choose for strict-priority for the real-time traffic?
Answer: B
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/qos_conmgt/configuration/xe-3s/qos-conmgt-xe-3s-book/qos The sum of all bandwidth allocation on an interface cannot exceed 75 percent of the total available interface bandwidth. The remaining 25 percent is used for other overhead, including Layer 2 overhead, routing traffic, and best-effort traffic. Bandwidth for the CBWFQ class-default class, for instance, is taken from the remaining
25 percent.
NEW QUESTION # 123
Which consideration must be taken into account when using the DHCP relay feature in a Cisco SD-Access Architecture?
Answer: D
Explanation:
https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management
/dna-center/tech_notes/sda_dhcp/b_cisco_sda_dhcp.html
NEW QUESTION # 124
An engineer needs to design a management network for the company. The solution has these requirements:
* overlay network does not cause routing issues
* ease of troubleshooting for the operations team
* devices are accessed securely
Which solution meets these requirements?
Answer: A
Explanation:
The correct solution is again a management VRF with SSH keys for device access. This duplicate item tests the same design principle: management traffic should be logically isolated from the overlay and production forwarding paths. A VRF gives the management plane its own routing table, so changes or failures in the overlay do not normally alter management reachability. That makes the network easier to operate because engineers can troubleshoot device access, routing, and overlay behavior as separate concerns. SSH keys satisfy the secure-access requirement by providing encrypted management sessions with public-key authentication. Private VLANs and standard VLANs can segment Layer 2 traffic, but they do not solve routing separation by themselves. TACACS+ and RADIUS provide authentication, authorization, and accounting, but they do not prevent overlay routing from interacting with management reachability. A separate physical interface can help in some designs, but option A is the cleanest answer because it combines routing isolation with secure access. Reference topics: management VRF, SSH, secure management plane, route isolation, overlay troubleshooting.
NEW QUESTION # 125
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